cpython-lru_cache-weakref: Modules/selectmodule.c annotate

annotate Modules/selectmodule.c @ 48090:2da42dcbb8ce 2.5

Backport code from r65182: Issue #2620: Overflow checking when allocating or reallocating memory was not always being done properly in some python types and extension modules. PyMem_MALLOC, PyMem_REALLOC, PyMem_NEW and PyMem_RESIZE have all been updated to perform better checks and places in the code that would previously leak memory on the error path when such an allocation failed have been fixed.

author	Neal Norwitz <nnorwitz@gmail.com>
date	Mon, 28 Jul 2008 05:06:20 +0000
parents	c67b23397f30
children	787b969d37f0

rev	line source
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	1 /* select - Module containing unix select(2) call.
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	2 Under Unix, the file descriptors are small integers.
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	3 Under Win32, select only exists for sockets, and sockets may
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	4 have any value except INVALID_SOCKET.
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	5 Under BeOS, we suffer the same dichotomy as Win32; sockets can be anything
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	6 >= 0.
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	7 */
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	8
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	9 #include "Python.h"
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	10
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	11 #ifdef __APPLE__
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	12 /* Perform runtime testing for a broken poll on OSX to make it easier
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	13 * to use the same binary on multiple releases of the OS.
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	14 */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	15 #undef HAVE_BROKEN_POLL
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	16 #endif
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	17
15512 e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	18 /* Windows #defines FD_SETSIZE to 64 if FD_SETSIZE isn't already defined.
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	19 64 is too small (too many people have bumped into that limit).
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	20 Here we boost it.
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	21 Users who want even more than the boosted limit should #define
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	22 FD_SETSIZE higher before this; e.g., via compiler /D switch.
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	23 */
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	24 #if defined(MS_WINDOWS) && !defined(FD_SETSIZE)
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	25 #define FD_SETSIZE 512
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	26 #endif
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512. Tim Peters <tim.peters@gmail.com> parents: 14918 diff changeset	27
18603 b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	28 #if defined(HAVE_POLL_H)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	29 #include <poll.h>
18603 b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	30 #elif defined(HAVE_SYS_POLL_H)
b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	31 #include <sys/poll.h>
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	32 #endif
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	33
4621 a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	34 #ifdef __sgi
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	35 /* This is missing from unistd.h */
13667 a6c7bfdd6777 Even more ANSIfication: fix as many function pointers and declarations as Thomas Wouters <thomas@python.org> parents: 13656 diff changeset	36 extern void bzero(void *, int);
4621 a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	37 #endif
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	38
38716 42808526511c Patch #1495999: Part two of Windows CE changes. Martin v. Löwis <martin@v.loewis.de> parents: 38489 diff changeset	39 #ifdef HAVE_SYS_TYPES_H
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1392 diff changeset	40 #include <sys/types.h>
11243 6aac31cd2102 Patch by Mark Hammond to avoid certain header files on Windows/CE. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	41 #endif
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	42
22114 c454b76d51e7 OS/2 EMX port changes (Modules part of patch #450267): Andrew MacIntyre <andymac@bullseye.apana.org.au> parents: 21712 diff changeset	43 #if defined(PYOS_OS2) && !defined(PYCC_GCC)
6626 5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	44 #include <sys/time.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	45 #include <utils.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	46 #endif
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	47
3738 ce74bba8a6a6 Slightly different Windows ifdefs Guido van Rossum <guido@python.org> parents: 3675 diff changeset	48 #ifdef MS_WINDOWS
39043 c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	49 # include <winsock.h>
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	50 #else
39043 c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	51 # define SOCKET int
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	52 # ifdef __BEOS__
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	53 # include <net/socket.h>
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	54 # elif defined(__VMS)
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	55 # include <socket.h>
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	56 # endif
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	57 #endif
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	58
16946 31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	59
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	60 static PyObject *SelectError;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	61
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	62 /* list of Python objects and their file descriptor */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	63 typedef struct {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	64 PyObject obj; / owned reference */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	65 SOCKET fd;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	66 int sentinel; /* -1 == sentinel */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	67 } pylist;
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	68
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	69 static void
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	70 reap_obj(pylist fd2obj[FD_SETSIZE + 1])
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	71 {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	72 int i;
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	73 for (i = 0; i < FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	74 Py_XDECREF(fd2obj[i].obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	75 fd2obj[i].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	76 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	77 fd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	78 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	79
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	80
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	81 /* returns -1 and sets the Python exception if an error occurred, otherwise
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	82 returns a number >= 0
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	83 */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	84 static int
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	85 seq2set(PyObject seq, fd_set set, pylist fd2obj[FD_SETSIZE + 1])
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	86 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	87 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	88 int max = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	89 int index = 0;
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	90 int len = -1;
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	91 PyObject* fast_seq = NULL;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	92 PyObject* o = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	93
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	94 fd2obj[0].obj = (PyObject)0; / set list to zero size */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	95 FD_ZERO(set);
2611 01687ce43708 fix subtle refcnt bug Guido van Rossum <guido@python.org> parents: 2061 diff changeset	96
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	97 fast_seq=PySequence_Fast(seq, "arguments 1-3 must be sequences");
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	98 if (!fast_seq)
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	99 return -1;
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	100
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	101 len = PySequence_Fast_GET_SIZE(fast_seq);
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	102
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	103 for (i = 0; i < len; i++) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	104 SOCKET v;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	105
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	106 /* any intervening fileno() calls could decr this refcnt */
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	107 if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
4734 3db423515626 list2set(): correct return value (an int, not a PyObject). Barry Warsaw <barry@python.org>* parents: 4730 diff changeset	108 return -1;
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	109
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	110 Py_INCREF(o);
13593 df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	111 v = PyObject_AsFileDescriptor( o );
df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	112 if (v == -1) goto finally;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	113
11656 db756d31e727 According to Ron Bickers, and with apparent approval of Chris Guido van Rossum <guido@python.org> parents: 11243 diff changeset	114 #if defined(_MSC_VER)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	115 max = 0; /* not used for Win32 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	116 #else /* !_MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	117 if (v < 0 \|\| v >= FD_SETSIZE) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	118 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	119 "filedescriptor out of range in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	120 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	121 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	122 if (v > max)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	123 max = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	124 #endif /* _MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	125 FD_SET(v, set);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	126
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	127 /* add object and its file descriptor to the list */
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	128 if (index >= FD_SETSIZE) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	129 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	130 "too many file descriptors in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	131 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	132 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	133 fd2obj[index].obj = o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	134 fd2obj[index].fd = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	135 fd2obj[index].sentinel = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	136 fd2obj[++index].sentinel = -1;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	137 }
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	138 Py_DECREF(fast_seq);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	139 return max+1;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	140
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	141 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	142 Py_XDECREF(o);
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	143 Py_DECREF(fast_seq);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	144 return -1;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	145 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	146
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	147 /* returns NULL and sets the Python exception if an error occurred */
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	148 static PyObject *
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	149 set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	150 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	151 int i, j, count=0;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	152 PyObject list, o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	153 SOCKET fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	154
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	155 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	156 if (FD_ISSET(fd2obj[j].fd, set))
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	157 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	158 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	159 list = PyList_New(count);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	160 if (!list)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	161 return NULL;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	162
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	163 i = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	164 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	165 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	166 if (FD_ISSET(fd, set)) {
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	167 #ifndef _MSC_VER
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	168 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	169 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	170 "filedescriptor out of range returned in select()");
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	171 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	172 }
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	173 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	174 o = fd2obj[j].obj;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	175 fd2obj[j].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	176 /* transfer ownership */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	177 if (PyList_SetItem(list, i, o) < 0)
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	178 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	179
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	180 i++;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	181 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	182 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	183 return list;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	184 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	185 Py_DECREF(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	186 return NULL;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	187 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	188
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	189 #undef SELECT_USES_HEAP
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	190 #if FD_SETSIZE > 1024
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	191 #define SELECT_USES_HEAP
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	192 #endif /* FD_SETSIZE > 1024 */
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	193
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	194 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	195 select_select(PyObject self, PyObject args)
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	196 {
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	197 #ifdef SELECT_USES_HEAP
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	198 pylist rfd2obj, wfd2obj, *efd2obj;
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	199 #else /* !SELECT_USES_HEAP */
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	200 /* XXX: All this should probably be implemented as follows:
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	201 * - find the highest descriptor we're interested in
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	202 * - add one
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	203 * - that's the size
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	204 * See: Stevens, APitUE, $12.5.1
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	205 */
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	206 pylist rfd2obj[FD_SETSIZE + 1];
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	207 pylist wfd2obj[FD_SETSIZE + 1];
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	208 pylist efd2obj[FD_SETSIZE + 1];
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	209 #endif /* SELECT_USES_HEAP */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	210 PyObject ifdlist, ofdlist, *efdlist;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	211 PyObject *ret = NULL;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	212 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	213 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	214 double timeout;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	215 struct timeval tv, *tvp;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	216 long seconds;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	217 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	218 int n;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	219
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	220 /* convert arguments */
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	221 if (!PyArg_UnpackTuple(args, "select", 3, 4,
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	222 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	223 return NULL;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	224
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	225 if (tout == Py_None)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	226 tvp = (struct timeval *)0;
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	227 else if (!PyNumber_Check(tout)) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	228 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	229 "timeout must be a float or None");
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	230 return NULL;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	231 }
1390 cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same Guido van Rossum <guido@python.org> parents: 1284 diff changeset	232 else {
26270 e270c0d41a05 Don't use PyNumber_Float() since it's is nearly useless. Instead, rely on Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 26153 diff changeset	233 timeout = PyFloat_AsDouble(tout);
e270c0d41a05 Don't use PyNumber_Float() since it's is nearly useless. Instead, rely on Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 26153 diff changeset	234 if (timeout == -1 && PyErr_Occurred())
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	235 return NULL;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	236 if (timeout > (double)LONG_MAX) {
19311 fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide. Barry Warsaw <barry@python.org> parents: 19310 diff changeset	237 PyErr_SetString(PyExc_OverflowError,
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide. Barry Warsaw <barry@python.org> parents: 19310 diff changeset	238 "timeout period too long");
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	239 return NULL;
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	240 }
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	241 seconds = (long)timeout;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	242 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	243 tv.tv_sec = seconds;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	244 tv.tv_usec = (long)(timeout*1000000.0);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	245 tvp = &tv;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	246 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	247
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	248
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	249 #ifdef SELECT_USES_HEAP
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	250 /* Allocate memory for the lists */
19328 b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	251 rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	252 wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it Tim Peters <tim.peters@gmail.com> parents: 19311 diff changeset	253 efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	254 if (rfd2obj == NULL \|\| wfd2obj == NULL \|\| efd2obj == NULL) {
12576 1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	255 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	256 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	257 if (efd2obj) PyMem_DEL(efd2obj);
27815 cb1eeaeb74a0 SF bug 684667: Modules/selectmodule.c returns NULL without exception set. Tim Peters <tim.peters@gmail.com> parents: 26270 diff changeset	258 return PyErr_NoMemory();
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	259 }
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	260 #endif /* SELECT_USES_HEAP */
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	261 /* Convert sequences to fd_sets, and get maximum fd number
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	262 * propagates the Python exception set in seq2set()
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	263 */
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	264 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	265 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	266 efd2obj[0].sentinel = -1;
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	267 if ((imax=seq2set(ifdlist, &ifdset, rfd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	268 goto finally;
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	269 if ((omax=seq2set(ofdlist, &ofdset, wfd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	270 goto finally;
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	271 if ((emax=seq2set(efdlist, &efdset, efd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	272 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	273 max = imax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	274 if (omax > max) max = omax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	275 if (emax > max) max = emax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	276
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	277 Py_BEGIN_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	278 n = select(max, &ifdset, &ofdset, &efdset, tvp);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	279 Py_END_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	280
25399 97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	281 #ifdef MS_WINDOWS
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	282 if (n == SOCKET_ERROR) {
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	283 PyErr_SetExcFromWindowsErr(SelectError, WSAGetLastError());
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	284 }
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	285 #else
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	286 if (n < 0) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	287 PyErr_SetFromErrno(SelectError);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	288 }
25399 97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number. Thomas Heller <theller@ctypes.org> parents: 24408 diff changeset	289 #endif
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	290 else if (n == 0) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	291 /* optimization */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	292 ifdlist = PyList_New(0);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	293 if (ifdlist) {
30683 3b59fa5d25b1 Simplify and speedup uses of Py_BuildValue(): Raymond Hettinger <python@rcn.com> parents: 30402 diff changeset	294 ret = PyTuple_Pack(3, ifdlist, ifdlist, ifdlist);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	295 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	296 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	297 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	298 else {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	299 /* any of these three calls can raise an exception. it's more
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	300 convenient to test for this after all three calls... but
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	301 is that acceptable?
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	302 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	303 ifdlist = set2list(&ifdset, rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	304 ofdlist = set2list(&ofdset, wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	305 efdlist = set2list(&efdset, efd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	306 if (PyErr_Occurred())
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	307 ret = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	308 else
30683 3b59fa5d25b1 Simplify and speedup uses of Py_BuildValue(): Raymond Hettinger <python@rcn.com> parents: 30402 diff changeset	309 ret = PyTuple_Pack(3, ifdlist, ofdlist, efdlist);
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	310
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	311 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	312 Py_DECREF(ofdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	313 Py_DECREF(efdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	314 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	315
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	316 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	317 reap_obj(rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	318 reap_obj(wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	319 reap_obj(efd2obj);
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	320 #ifdef SELECT_USES_HEAP
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	321 PyMem_DEL(rfd2obj);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	322 PyMem_DEL(wfd2obj);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	323 PyMem_DEL(efd2obj);
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	324 #endif /* SELECT_USES_HEAP */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	325 return ret;
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	326 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	327
31761 f4a4ac7331ec Added configure check for broken poll() on some unix systems (MacOS X 10.3) Nicholas Bastin <nick.bastin@gmail.com> parents: 30683 diff changeset	328 #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	329 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	330 * poll() support
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	331 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	332
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	333 typedef struct {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	334 PyObject_HEAD
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	335 PyObject *dict;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	336 int ufd_uptodate;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	337 int ufd_len;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	338 struct pollfd *ufds;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	339 } pollObject;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	340
24280 1598a1e473e2 staticforward bites the dust. Jeremy Hylton <jeremy@alum.mit.edu> parents: 23832 diff changeset	341 static PyTypeObject poll_Type;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	342
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	343 /* Update the malloc'ed array of pollfds to match the dictionary
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	344 contained within a pollObject. Return 1 on success, 0 on an error.
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	345 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	346
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	347 static int
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	348 update_ufd_array(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	349 {
36501 7fdc639bc5b4 Merge ssize_t branch. Martin v. Löwis <martin@v.loewis.de> parents: 36324 diff changeset	350 Py_ssize_t i, pos;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	351 PyObject key, value;
48090 2da42dcbb8ce Backport code from r65182: Neal Norwitz <nnorwitz@gmail.com> parents: 39043 diff changeset	352 struct pollfd *old_ufds = self->ufds;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	353
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	354 self->ufd_len = PyDict_Size(self->dict);
48090 2da42dcbb8ce Backport code from r65182: Neal Norwitz <nnorwitz@gmail.com> parents: 39043 diff changeset	355 PyMem_RESIZE(self->ufds, struct pollfd, self->ufd_len);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	356 if (self->ufds == NULL) {
48090 2da42dcbb8ce Backport code from r65182: Neal Norwitz <nnorwitz@gmail.com> parents: 39043 diff changeset	357 self->ufds = old_ufds;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	358 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	359 return 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	360 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	361
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	362 i = pos = 0;
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	363 while (PyDict_Next(self->dict, &pos, &key, &value)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	364 self->ufds[i].fd = PyInt_AsLong(key);
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	365 self->ufds[i].events = (short)PyInt_AsLong(value);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	366 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	367 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	368 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	369 return 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	370 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	371
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	372 PyDoc_STRVAR(poll_register_doc,
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	373 "register(fd [, eventmask] ) -> None\n\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	374 Register a file descriptor with the polling object.\n\
19311 fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide. Barry Warsaw <barry@python.org> parents: 19310 diff changeset	375 fd -- either an integer, or an object with a fileno() method returning an\n\
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide. Barry Warsaw <barry@python.org> parents: 19310 diff changeset	376 int.\n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	377 events -- an optional bitmask describing the type of events to check for");
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	378
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	379 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	380 poll_register(pollObject self, PyObject args)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	381 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	382 PyObject o, key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	383 int fd, events = POLLIN \| POLLPRI \| POLLOUT;
20668 3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	384 int err;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	385
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	386 if (!PyArg_ParseTuple(args, "O\|i:register", &o, &events)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	387 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	388 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	389
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	390 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	391 if (fd == -1) return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	392
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	393 /* Add entry to the internal dictionary: the key is the
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	394 file descriptor, and the value is the event mask. */
20668 3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	395 key = PyInt_FromLong(fd);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	396 if (key == NULL)
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	397 return NULL;
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	398 value = PyInt_FromLong(events);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	399 if (value == NULL) {
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	400 Py_DECREF(key);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	401 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	402 }
20668 3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	403 err = PyDict_SetItem(self->dict, key, value);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	404 Py_DECREF(key);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	405 Py_DECREF(value);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	406 if (err < 0)
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	407 return NULL;
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	408
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	409 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	410
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	411 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	412 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	413 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	414
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	415 PyDoc_STRVAR(poll_unregister_doc,
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	416 "unregister(fd) -> None\n\n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	417 Remove a file descriptor being tracked by the polling object.");
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	418
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	419 static PyObject *
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	420 poll_unregister(pollObject self, PyObject o)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	421 {
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	422 PyObject *key;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	423 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	424
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	425 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	426 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	427 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	428
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	429 /* Check whether the fd is already in the array */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	430 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	431 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	432 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	433
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	434 if (PyDict_DelItem(self->dict, key) == -1) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	435 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	436 /* This will simply raise the KeyError set by PyDict_DelItem
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	437 if the file descriptor isn't registered. */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	438 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	439 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	440
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	441 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	442 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	443
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	444 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	445 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	446 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	447
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	448 PyDoc_STRVAR(poll_poll_doc,
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	449 "poll( [timeout] ) -> list of (fd, event) 2-tuples\n\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	450 Polls the set of registered file descriptors, returning a list containing \n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	451 any descriptors that have events or errors to report.");
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	452
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	453 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	454 poll_poll(pollObject self, PyObject args)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	455 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	456 PyObject result_list = NULL, tout = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	457 int timeout = 0, poll_result, i, j;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	458 PyObject value = NULL, num = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	459
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	460 if (!PyArg_UnpackTuple(args, "poll", 0, 1, &tout)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	461 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	462 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	463
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	464 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	465 if (tout == NULL \|\| tout == Py_None)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	466 timeout = -1;
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	467 else if (!PyNumber_Check(tout)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	468 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	469 "timeout must be an integer or None");
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	470 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	471 }
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	472 else {
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	473 tout = PyNumber_Int(tout);
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	474 if (!tout)
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	475 return NULL;
26153 6078abc69036 Use PyInt_AsLong instead of PyInt_AS_LONG after the call to Walter Dörwald <walter@livinglogic.de> parents: 25400 diff changeset	476 timeout = PyInt_AsLong(tout);
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	477 Py_DECREF(tout);
35834 418a61ead11b Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint Neal Norwitz <nnorwitz@gmail.com> parents: 33007 diff changeset	478 if (timeout == -1 && PyErr_Occurred())
418a61ead11b Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint Neal Norwitz <nnorwitz@gmail.com> parents: 33007 diff changeset	479 return NULL;
24408 4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated Neal Norwitz <nnorwitz@gmail.com> parents: 24363 diff changeset	480 }
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	481
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	482 /* Ensure the ufd array is up to date */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	483 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	484 if (update_ufd_array(self) == 0)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	485 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	486
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	487 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	488 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	489 poll_result = poll(self->ufds, self->ufd_len, timeout);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	490 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	491
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	492 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	493 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	494 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	495 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	496
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	497 /* build the result list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	498
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	499 result_list = PyList_New(poll_result);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	500 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	501 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	502 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	503 for (i = 0, j = 0; j < poll_result; j++) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	504 /* skip to the next fired descriptor */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	505 while (!self->ufds[i].revents) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	506 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	507 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	508 /* if we hit a NULL return, set value to NULL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	509 and break out of loop; code at end will
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	510 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	511 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	512 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	513 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	514 num = PyInt_FromLong(self->ufds[i].fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	515 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	516 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	517 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	518 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	519 PyTuple_SET_ITEM(value, 0, num);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	520
33007 9fb2e30f26be [Bug #923315] Produce correct result on AIX Andrew M. Kuchling <amk@amk.ca> parents: 31761 diff changeset	521 /* The &0xffff is a workaround for AIX. 'revents'
9fb2e30f26be [Bug #923315] Produce correct result on AIX Andrew M. Kuchling <amk@amk.ca> parents: 31761 diff changeset	522 is a 16-bit short, and IBM assigned POLLNVAL
9fb2e30f26be [Bug #923315] Produce correct result on AIX Andrew M. Kuchling <amk@amk.ca> parents: 31761 diff changeset	523 to be 0x8000, so the conversion to int results
9fb2e30f26be [Bug #923315] Produce correct result on AIX Andrew M. Kuchling <amk@amk.ca> parents: 31761 diff changeset	524 in a negative number. See SF bug #923315. */
9fb2e30f26be [Bug #923315] Produce correct result on AIX Andrew M. Kuchling <amk@amk.ca> parents: 31761 diff changeset	525 num = PyInt_FromLong(self->ufds[i].revents & 0xffff);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	526 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	527 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	528 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	529 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	530 PyTuple_SET_ITEM(value, 1, num);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	531 if ((PyList_SetItem(result_list, j, value)) == -1) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	532 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	533 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	534 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	535 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	536 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	537 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	538 return result_list;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	539
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	540 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	541 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	542 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	543 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	544
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	545 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	546 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	547 METH_VARARGS, poll_register_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	548 {"unregister", (PyCFunction)poll_unregister,
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	549 METH_O, poll_unregister_doc},
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	550 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	551 METH_VARARGS, poll_poll_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	552 {NULL, NULL} /* sentinel */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	553 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	554
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	555 static pollObject *
14277 984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>: Fred Drake <fdrake@acm.org> parents: 14182 diff changeset	556 newPollObject(void)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	557 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	558 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	559 self = PyObject_New(pollObject, &poll_Type);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	560 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	561 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	562 /* ufd_uptodate is a Boolean, denoting whether the
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	563 array pointed to by ufds matches the contents of the dictionary. */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	564 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	565 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	566 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	567 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	568 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	569 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	570 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	571 return self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	572 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	573
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	574 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	575 poll_dealloc(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	576 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	577 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	578 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	579 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	580 PyObject_Del(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	581 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	582
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	583 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	584 poll_getattr(pollObject self, char name)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	585 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	586 return Py_FindMethod(poll_methods, (PyObject *)self, name);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	587 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	588
24283 c0a67a1cab09 Removed more stray instances of statichere, but left _sre.c alone. Tim Peters <tim.peters@gmail.com> parents: 24280 diff changeset	589 static PyTypeObject poll_Type = {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	590 /* The ob_type field must be initialized in the module init function
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	591 * to be portable to Windows without using C++. */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	592 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	593 0, /ob_size/
21313 91dd223829c6 Patch supplied by Burton Radons for his own SF bug #487390: Modifying Guido van Rossum <guido@python.org> parents: 20668 diff changeset	594 "select.poll", /tp_name/
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	595 sizeof(pollObject), /tp_basicsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	596 0, /tp_itemsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	597 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	598 (destructor)poll_dealloc, /tp_dealloc/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	599 0, /tp_print/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	600 (getattrfunc)poll_getattr, /tp_getattr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	601 0, /tp_setattr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	602 0, /tp_compare/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	603 0, /tp_repr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	604 0, /tp_as_number/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	605 0, /tp_as_sequence/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	606 0, /tp_as_mapping/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	607 0, /tp_hash/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	608 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	609
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	610 PyDoc_STRVAR(poll_doc,
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	611 "Returns a polling object, which supports registering and\n\
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	612 unregistering file descriptors, and then polling them for I/O events.");
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	613
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	614 static PyObject *
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	615 select_poll(PyObject self, PyObject unused)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	616 {
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	617 return (PyObject *)newPollObject();
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	618 }
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	619
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	620 #ifdef __APPLE__
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	621 /*
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	622 * On some systems poll() sets errno on invalid file descriptors. We test
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	623 * for this at runtime because this bug may be fixed or introduced between
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	624 * OS releases.
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	625 */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	626 static int select_have_broken_poll(void)
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	627 {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	628 int poll_test;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	629 int filedes[2];
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	630
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	631 struct pollfd poll_struct = { 0, POLLIN\|POLLPRI\|POLLOUT, 0 };
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	632
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	633 /* Create a file descriptor to make invalid */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	634 if (pipe(filedes) < 0) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	635 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	636 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	637 poll_struct.fd = filedes[0];
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	638 close(filedes[0]);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	639 close(filedes[1]);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	640 poll_test = poll(&poll_struct, 1, 0);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	641 if (poll_test < 0) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	642 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	643 } else if (poll_test == 0 && poll_struct.revents != POLLNVAL) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	644 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	645 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	646 return 0;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	647 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	648 #endif /* __APPLE__ */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	649
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	650 #endif /* HAVE_POLL */
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	651
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	652 PyDoc_STRVAR(select_doc,
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	653 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	654 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	655 Wait until one or more file descriptors are ready for some kind of I/O.\n\
30402 a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for Brett Cannon <bcannon@gmail.com> parents: 27815 diff changeset	656 The first three arguments are sequences of file descriptors to be waited for:\n\
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	657 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	658 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	659 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	660 If only one kind of condition is required, pass [] for the other lists.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	661 A file descriptor is either a socket or file object, or a small integer\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	662 gotten from a fileno() method call on one of those.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	663 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	664 The optional 4th argument specifies a timeout in seconds; it may be\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	665 a floating point number to specify fractions of seconds. If it is absent\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	666 or None, the call will never time out.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	667 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	668 The return value is a tuple of three lists corresponding to the first three\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	669 arguments; each contains the subset of the corresponding file descriptors\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	670 that are ready.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	671 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	672 * IMPORTANT NOTICE *\n\
39043 c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	673 On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.");
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	674
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	675 static PyMethodDef select_methods[] = {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	676 {"select", select_select, METH_VARARGS, select_doc},
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	677 #if defined(HAVE_POLL)
38489 3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible. Georg Brandl <georg@python.org> parents: 37935 diff changeset	678 {"poll", select_poll, METH_NOARGS, poll_doc},
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	679 #endif /* HAVE_POLL */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	680 {0, 0}, /* sentinel */
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	681 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	682
23832 ed1ba37a46b7 Patch #568124: Add doc string macros. Martin v. Löwis <martin@v.loewis.de> parents: 23607 diff changeset	683 PyDoc_STRVAR(module_doc,
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	684 "This module supports asynchronous I/O on multiple file descriptors.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	685 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	686 * IMPORTANT NOTICE *\n\
39043 c67b23397f30 Patch #1516912: improve Modules support for OpenVMS. Neal Norwitz <nnorwitz@gmail.com> parents: 38716 diff changeset	687 On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.");
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	688
24363 979ff5d0ae07 Replace DL_IMPORT with PyMODINIT_FUNC and remove "/export:init..." link Mark Hammond <mhammond@skippinet.com.au> parents: 24283 diff changeset	689 PyMODINIT_FUNC
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13593 diff changeset	690 initselect(void)
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	691 {
22729 cdff3c7c1a76 Use the PyModule_Add() APIs instead of manipulating the module dict Fred Drake <fdrake@acm.org>* parents: 22114 diff changeset	692 PyObject *m;
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	693 m = Py_InitModule3("select", select_methods, module_doc);
36324 1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35834 diff changeset	694 if (m == NULL)
1af7f719ed28 Check return result from Py_InitModule(). This API can fail. Neal Norwitz <nnorwitz@gmail.com>* parents: 35834 diff changeset	695 return;
22729 cdff3c7c1a76 Use the PyModule_Add() APIs instead of manipulating the module dict Fred Drake <fdrake@acm.org>* parents: 22114 diff changeset	696
6367 2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 4734 diff changeset	697 SelectError = PyErr_NewException("select.error", NULL, NULL);
22729 cdff3c7c1a76 Use the PyModule_Add() APIs instead of manipulating the module dict Fred Drake <fdrake@acm.org>* parents: 22114 diff changeset	698 Py_INCREF(SelectError);
cdff3c7c1a76 Use the PyModule_Add() APIs instead of manipulating the module dict Fred Drake <fdrake@acm.org>* parents: 22114 diff changeset	699 PyModule_AddObject(m, "error", SelectError);
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	700 #if defined(HAVE_POLL)
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	701
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	702 #ifdef __APPLE__
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	703 if (select_have_broken_poll()) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	704 if (PyObject_DelAttrString(m, "poll") == -1) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	705 PyErr_Clear();
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	706 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	707 } else {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	708 #else
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	709 {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	710 #endif
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	711 poll_Type.ob_type = &PyType_Type;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	712 PyModule_AddIntConstant(m, "POLLIN", POLLIN);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	713 PyModule_AddIntConstant(m, "POLLPRI", POLLPRI);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	714 PyModule_AddIntConstant(m, "POLLOUT", POLLOUT);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	715 PyModule_AddIntConstant(m, "POLLERR", POLLERR);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	716 PyModule_AddIntConstant(m, "POLLHUP", POLLHUP);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	717 PyModule_AddIntConstant(m, "POLLNVAL", POLLNVAL);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	718
14918 914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	719 #ifdef POLLRDNORM
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	720 PyModule_AddIntConstant(m, "POLLRDNORM", POLLRDNORM);
14918 914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	721 #endif
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	722 #ifdef POLLRDBAND
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	723 PyModule_AddIntConstant(m, "POLLRDBAND", POLLRDBAND);
14918 914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	724 #endif
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	725 #ifdef POLLWRNORM
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	726 PyModule_AddIntConstant(m, "POLLWRNORM", POLLWRNORM);
14918 914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	727 #endif
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	728 #ifdef POLLWRBAND
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	729 PyModule_AddIntConstant(m, "POLLWRBAND", POLLWRBAND);
14918 914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and Andrew M. Kuchling <amk@amk.ca> parents: 14869 diff changeset	730 #endif
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	731 #ifdef POLLMSG
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	732 PyModule_AddIntConstant(m, "POLLMSG", POLLMSG);
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	733 #endif
37935 e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	734 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime Ronald Oussoren <ronaldoussoren@mac.com> parents: 36501 diff changeset	735 #endif /* HAVE_POLL */
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	736 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 48090:2da42dcbb8ce 2.5