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

annotate Modules/selectmodule.c @ 20737:00a581bdedeb legacy-trunk

When overriding __str__ or __repr__, set the tp_print slot to NULL.

author	Guido van Rossum <guido@python.org>
date	Mon, 29 Oct 2001 14:33:44 +0000
parents	3e9b85de447b
children	91dd223829c6

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
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	11 /* 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	12 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	13 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	14 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	15 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	16 */
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	17 #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	18 #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	19 #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	20
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	21 #ifdef HAVE_UNISTD_H
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	22 #include <unistd.h>
d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	23 #endif
18603 b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	24 #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	25 #include <poll.h>
18603 b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	26 #elif defined(HAVE_SYS_POLL_H)
b9d47d083d2c [Bug #438050] Andrew M. Kuchling <amk@amk.ca> parents: 17873 diff changeset	27 #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	28 #endif
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	29
4621 a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	30 #ifdef __sgi
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	31 /* 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	32 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	33 #endif
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	34
11243 6aac31cd2102 Patch by Mark Hammond to avoid certain header files on Windows/CE. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	35 #ifndef DONT_HAVE_SYS_TYPES_H
1746 1940892d2fe3 Merge alpha100 branch back to main trunk Guido van Rossum <guido@python.org> parents: 1392 diff changeset	36 #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	37 #endif
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	38
6626 5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	39 #if defined(PYOS_OS2)
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	40 #include <sys/time.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	41 #include <utils.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	42 #endif
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	43
3738 ce74bba8a6a6 Slightly different Windows ifdefs Guido van Rossum <guido@python.org> parents: 3675 diff changeset	44 #ifdef MS_WINDOWS
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	45 #include <winsock.h>
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	46 #else
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	47 #ifdef __BEOS__
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	48 #include <net/socket.h>
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	49 #define SOCKET int
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	50 #else
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	51 #define SOCKET int
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	52 #endif
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	53 #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	54
16946 31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	55
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	56 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	57
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	58 /* 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	59 typedef struct {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	60 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	61 SOCKET fd;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	62 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	63 } pylist;
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	64
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	65 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	66 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	67 {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	68 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	69 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	70 Py_XDECREF(fd2obj[i].obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	71 fd2obj[i].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	72 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	73 fd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	74 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	75
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	76
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	77 /* 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	78 returns a number >= 0
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	79 */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	80 static int
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	81 list2set(PyObject list, 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	82 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	83 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	84 int max = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	85 int index = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	86 int len = PyList_Size(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	87 PyObject* o = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	88
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	89 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	90 FD_ZERO(set);
2611 01687ce43708 fix subtle refcnt bug Guido van Rossum <guido@python.org> parents: 2061 diff changeset	91
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	92 for (i = 0; i < len; i++) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	93 SOCKET v;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	94
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	95 /* any intervening fileno() calls could decr this refcnt */
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	96 if (!(o = PyList_GetItem(list, i)))
4734 3db423515626 list2set(): correct return value (an int, not a PyObject). Barry Warsaw <barry@python.org>* parents: 4730 diff changeset	97 return -1;
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	98
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	99 Py_INCREF(o);
13593 df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	100 v = PyObject_AsFileDescriptor( o );
df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	101 if (v == -1) goto finally;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	102
11656 db756d31e727 According to Ron Bickers, and with apparent approval of Chris Guido van Rossum <guido@python.org> parents: 11243 diff changeset	103 #if defined(_MSC_VER)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	104 max = 0; /* not used for Win32 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	105 #else /* !_MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	106 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	107 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	108 "filedescriptor out of range in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	109 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	110 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	111 if (v > max)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	112 max = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	113 #endif /* _MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	114 FD_SET(v, set);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	115
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	116 /* 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	117 if (index >= 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 "too many file descriptors 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 fd2obj[index].obj = o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	123 fd2obj[index].fd = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	124 fd2obj[index].sentinel = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	125 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	126 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	127 return max+1;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	128
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	129 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	130 Py_XDECREF(o);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	131 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	132 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	133
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	134 /* 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	135 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	136 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	137 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	138 int i, j, count=0;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	139 PyObject list, o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	140 SOCKET fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	141
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	142 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	143 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	144 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	145 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	146 list = PyList_New(count);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	147 if (!list)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	148 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	149
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	150 i = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	151 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	152 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	153 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	154 #ifndef _MSC_VER
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	155 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	156 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	157 "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	158 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	159 }
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	160 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	161 o = fd2obj[j].obj;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	162 fd2obj[j].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	163 /* transfer ownership */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	164 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	165 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	166
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	167 i++;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	168 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	169 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	170 return list;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	171 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	172 Py_DECREF(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	173 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	174 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	175
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	176 #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	177 #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	178 #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	179 #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	180
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	181 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	182 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	183 {
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	184 #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	185 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	186 #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	187 /* 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	188 * - 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	189 * - add one
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	190 * - 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	191 * 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	192 */
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	193 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	194 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	195 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	196 #endif /* SELECT_USES_HEAP */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	197 PyObject ifdlist, ofdlist, *efdlist;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	198 PyObject *ret = NULL;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	199 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	200 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	201 double timeout;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	202 struct timeval tv, *tvp;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	203 long seconds;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	204 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	205 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	206
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	207 /* convert arguments */
11882 dc65c5f6ad7c Massive patch by Skip Montanaro to add ":name" to as many Guido van Rossum <guido@python.org> parents: 11656 diff changeset	208 if (!PyArg_ParseTuple(args, "OOO\|O:select",
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	209 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	210 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	211
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	212 if (tout == Py_None)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	213 tvp = (struct timeval *)0;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	214 else if (!PyArg_Parse(tout, "d", &timeout)) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	215 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	216 "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	217 return NULL;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	218 }
1390 cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same Guido van Rossum <guido@python.org> parents: 1284 diff changeset	219 else {
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	220 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	221 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	222 "timeout period too long");
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	223 return NULL;
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	224 }
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	225 seconds = (long)timeout;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	226 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	227 tv.tv_sec = seconds;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	228 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	229 tvp = &tv;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	230 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	231
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	232 /* sanity check first three arguments */
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	233 if (!PyList_Check(ifdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	234 !PyList_Check(ofdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	235 !PyList_Check(efdlist))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	236 {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	237 PyErr_SetString(PyExc_TypeError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	238 "arguments 1-3 must be lists");
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	239 return NULL;
1390 cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same Guido van Rossum <guido@python.org> parents: 1284 diff changeset	240 }
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	241
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	242 #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	243 /* 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	244 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	245 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	246 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	247 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	248 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	249 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	250 if (efd2obj) PyMem_DEL(efd2obj);
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	251 return NULL;
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	252 }
19310 6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing Barry Warsaw <barry@python.org> parents: 18754 diff changeset	253 #endif /* SELECT_USES_HEAP */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	254 /* Convert lists to fd_sets, and get maximum fd number
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	255 * propagates the Python exception set in list2set()
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	256 */
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	257 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	258 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	259 efd2obj[0].sentinel = -1;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	260 if ((imax=list2set(ifdlist, &ifdset, rfd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	261 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	262 if ((omax=list2set(ofdlist, &ofdset, wfd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	263 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	264 if ((emax=list2set(efdlist, &efdset, efd2obj)) < 0)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	265 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	266 max = imax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	267 if (omax > max) max = omax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	268 if (emax > max) max = emax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	269
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	270 Py_BEGIN_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	271 n = select(max, &ifdset, &ofdset, &efdset, tvp);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	272 Py_END_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	273
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	274 if (n < 0) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	275 PyErr_SetFromErrno(SelectError);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	276 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	277 else if (n == 0) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	278 /* optimization */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	279 ifdlist = PyList_New(0);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	280 if (ifdlist) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	281 ret = Py_BuildValue("OOO", ifdlist, ifdlist, ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	282 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	283 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	284 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	285 else {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	286 /* 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	287 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	288 is that acceptable?
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	289 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	290 ifdlist = set2list(&ifdset, rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	291 ofdlist = set2list(&ofdset, wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	292 efdlist = set2list(&efdset, efd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	293 if (PyErr_Occurred())
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	294 ret = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	295 else
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	296 ret = Py_BuildValue("OOO", 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	297
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	298 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	299 Py_DECREF(ofdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	300 Py_DECREF(efdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	301 }
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 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	304 reap_obj(rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	305 reap_obj(wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	306 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	307 #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	308 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	309 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	310 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	311 #endif /* SELECT_USES_HEAP */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	312 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	313 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	314
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	315 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	316 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	317 * poll() support
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	318 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	319
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	320 typedef struct {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	321 PyObject_HEAD
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	322 PyObject *dict;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	323 int ufd_uptodate;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	324 int ufd_len;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	325 struct pollfd *ufds;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	326 } pollObject;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	327
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	328 staticforward PyTypeObject poll_Type;
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 /* 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	331 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	332 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	333
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	334 static int
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	335 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	336 {
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	337 int i, pos;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	338 PyObject key, value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	339
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	340 self->ufd_len = PyDict_Size(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	341 PyMem_Resize(self->ufds, struct pollfd, self->ufd_len);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	342 if (self->ufds == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	343 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	344 return 0;
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 i = pos = 0;
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	348 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	349 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	350 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	351 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	352 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	353 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	354 return 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	355 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	356
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	357 static char poll_register_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	358 "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	359 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	360 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	361 int.\n\
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	362 events -- an optional bitmask describing the type of events to check for";
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	363
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	364 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	365 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	366 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	367 PyObject o, key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	368 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	369 int err;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	370
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	371 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	372 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	373 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	374
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	375 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	376 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	377
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	378 /* 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	379 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	380 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	381 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	382 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	383 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	384 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	385 Py_DECREF(key);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	386 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	387 }
20668 3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck) Guido van Rossum <guido@python.org> parents: 20654 diff changeset	388 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	389 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	390 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	391 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	392 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	393
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	394 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	395
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	396 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	397 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	398 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	399
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	400 static char poll_unregister_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	401 "unregister(fd) -> None\n\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	402 Remove a file descriptor being tracked by the polling object.";
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	403
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	404 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	405 poll_unregister(pollObject self, PyObject args)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	406 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	407 PyObject o, key;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	408 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	409
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	410 if (!PyArg_ParseTuple(args, "O:unregister", &o)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	411 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	412 }
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 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	415 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	416 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	417
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	418 /* 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	419 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	420 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	421 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	422
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	423 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	424 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	425 /* 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	426 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	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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	430 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	431 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	432
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	433 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	434 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	435 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	436
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	437 static char poll_poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	438 "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	439 Polls the set of registered file descriptors, returning a list containing \n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	440 any descriptors that have events or errors to report.";
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	441
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	442 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	443 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	444 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	445 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	446 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	447 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	448
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	449 if (!PyArg_ParseTuple(args, "\|O:poll", &tout)) {
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	450 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	451 }
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 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	454 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	455 timeout = -1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	456 else if (!PyArg_Parse(tout, "i", &timeout)) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	457 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	458 "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	459 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	460 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	461
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	462 /* 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	463 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	464 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	465 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	466
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	467 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	468 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	469 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	470 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	471
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	472 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	473 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	474 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	475 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	476
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	477 /* build the result list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	478
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	479 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	480 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	481 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	482 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	483 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	484 /* 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	485 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	486 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	487 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	488 /* 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	489 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	490 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	491 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	492 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	493 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	494 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	495 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	496 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	497 goto error;
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 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	500
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	501 num = PyInt_FromLong(self->ufds[i].revents);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	502 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	503 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	504 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	505 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	506 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	507 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	508 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	509 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	510 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	511 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	512 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	513 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	514 return result_list;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	515
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	516 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	517 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	518 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	519 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	520
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	521 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	522 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	523 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	524 {"unregister", (PyCFunction)poll_unregister,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	525 METH_VARARGS, poll_unregister_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	526 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	527 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	528 {NULL, NULL} /* sentinel */
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	531 static pollObject *
14277 984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>: Fred Drake <fdrake@acm.org> parents: 14182 diff changeset	532 newPollObject(void)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	533 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	534 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	535 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	536 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	537 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	538 /* 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	539 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	540 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	541 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	542 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	543 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	544 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	545 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	546 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	547 return self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	548 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	549
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	550 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	551 poll_dealloc(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	552 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	553 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	554 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	555 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	556 PyObject_Del(self);
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	559 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	560 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	561 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	562 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	563 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	564
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	565 statichere PyTypeObject poll_Type = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	566 /* 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	567 * 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	568 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	569 0, /ob_size/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	570 "poll", /tp_name/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	571 sizeof(pollObject), /tp_basicsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	572 0, /tp_itemsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	573 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	574 (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	575 0, /tp_print/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	576 (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	577 0, /tp_setattr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	578 0, /tp_compare/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	579 0, /tp_repr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	580 0, /tp_as_number/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	581 0, /tp_as_sequence/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	582 0, /tp_as_mapping/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	583 0, /tp_hash/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	584 };
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 static char poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	587 "Returns a polling object, which supports registering and\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	588 unregistering file descriptors, and then polling them for I/O events.";
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	589
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	590 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	591 select_poll(PyObject self, PyObject args)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	592 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	593 pollObject *rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	594
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	595 if (!PyArg_ParseTuple(args, ":poll"))
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	596 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	597 rv = newPollObject();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	598 if ( rv == NULL )
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	599 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	600 return (PyObject *)rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	601 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	602 #endif /* HAVE_POLL */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	603
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	604 static char select_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	605 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	606 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	607 Wait until one or more file descriptors are ready for some kind of I/O.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	608 The first three arguments are lists of file descriptors to be waited for:\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	609 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	610 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	611 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	612 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	613 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	614 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	615 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	616 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	617 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	618 or None, the call will never time out.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	619 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	620 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	621 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	622 that are ready.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	623 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	624 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	625 On Windows, only sockets are supported; on Unix, all file descriptors.";
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	626
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	627 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	628 {"select", select_select, METH_VARARGS, select_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	629 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	630 {"poll", select_poll, METH_VARARGS, poll_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	631 #endif /* HAVE_POLL */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	632 {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	633 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	634
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	635 static char module_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	636 "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	637 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	638 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	639 On Windows, 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	640
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	641 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	642 * Convenience routine to export an integer value.
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	643 * For simplicity, errors (which are unlikely anyway) are ignored.
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	644 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	645
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	646 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	647 insint(PyObject d, char name, int value)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	648 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	649 PyObject *v = PyInt_FromLong((long) value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	650 if (v == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	651 /* Don't bother reporting this error */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	652 PyErr_Clear();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	653 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	654 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	655 PyDict_SetItemString(d, name, v);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	656 Py_DECREF(v);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	657 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	658 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	659
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 8823 diff changeset	660 DL_EXPORT(void)
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13593 diff changeset	661 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	662 {
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	663 PyObject m, d;
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	664 m = Py_InitModule3("select", select_methods, module_doc);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	665 d = PyModule_GetDict(m);
6367 2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 4734 diff changeset	666 SelectError = PyErr_NewException("select.error", NULL, NULL);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	667 PyDict_SetItemString(d, "error", SelectError);
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	668 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	669 poll_Type.ob_type = &PyType_Type;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	670 insint(d, "POLLIN", POLLIN);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	671 insint(d, "POLLPRI", POLLPRI);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	672 insint(d, "POLLOUT", POLLOUT);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	673 insint(d, "POLLERR", POLLERR);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	674 insint(d, "POLLHUP", POLLHUP);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	675 insint(d, "POLLNVAL", POLLNVAL);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	676
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	677 #ifdef POLLRDNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	678 insint(d, "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	679 #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	680 #ifdef POLLRDBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	681 insint(d, "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	682 #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	683 #ifdef POLLWRNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	684 insint(d, "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	685 #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	686 #ifdef POLLWRBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	687 insint(d, "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	688 #endif
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	689 #ifdef POLLMSG
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	690 insint(d, "POLLMSG", POLLMSG);
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	691 #endif
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	692 #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	693 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 20737:00a581bdedeb legacy-trunk