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

annotate Modules/selectmodule.c @ 19283:b865cd5c1925 legacy-trunk

Added comments before recently added/assigned slots in the type object, so the backward compatibility issues will be easier to understand. I only added comments indicating additions and assignments back to Python 2.0.

author	Fred Drake <fdrake@acm.org>
date	Wed, 15 Aug 2001 18:32:33 +0000
parents	3cd03a64c338
children	6cb9f538dce4

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 #ifdef RISCOS
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	56 #define NO_DUP
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	57 #undef off_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	58 #undef uid_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	59 #undef gid_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	60 #undef errno
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	61 #include "socklib.h"
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	62 #endif /* RISCOS */
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	63
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	64 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	65
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	66 /* 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	67 typedef struct {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	68 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	69 SOCKET fd;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	70 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	71 } pylist;
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	72
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	73 static void
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	74 reap_obj(pylist fd2obj[FD_SETSIZE + 3])
4700 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 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	77 for (i = 0; i < FD_SETSIZE + 3 && fd2obj[i].sentinel >= 0; i++) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	78 Py_XDECREF(fd2obj[i].obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	79 fd2obj[i].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	80 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	81 fd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	82 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	83
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	84
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	85 /* 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	86 returns a number >= 0
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	87 */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	88 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	89 list2set(PyObject list, fd_set set, pylist fd2obj[FD_SETSIZE + 3])
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	90 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	91 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	92 int max = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	93 int index = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	94 int len = PyList_Size(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	95 PyObject* o = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	96
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	97 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	98 FD_ZERO(set);
2611 01687ce43708 fix subtle refcnt bug Guido van Rossum <guido@python.org> parents: 2061 diff changeset	99
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	100 for (i = 0; i < len; i++) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	101 SOCKET v;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	102
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	103 /* any intervening fileno() calls could decr this refcnt */
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	104 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	105 return -1;
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	106
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	107 Py_INCREF(o);
13593 df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	108 v = PyObject_AsFileDescriptor( o );
df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	109 if (v == -1) goto finally;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	110
11656 db756d31e727 According to Ron Bickers, and with apparent approval of Chris Guido van Rossum <guido@python.org> parents: 11243 diff changeset	111 #if defined(_MSC_VER)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	112 max = 0; /* not used for Win32 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	113 #else /* !_MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	114 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	115 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	116 "filedescriptor out of range in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	117 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	118 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	119 if (v > max)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	120 max = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	121 #endif /* _MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	122 FD_SET(v, set);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	123
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	124 /* 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	125 if (index >= FD_SETSIZE) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	126 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	127 "too many file descriptors in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	128 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	129 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	130 fd2obj[index].obj = o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	131 fd2obj[index].fd = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	132 fd2obj[index].sentinel = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	133 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	134 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	135 return max+1;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	136
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	137 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	138 Py_XDECREF(o);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	139 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	140 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	141
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	142 /* 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	143 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	144 set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 3])
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	145 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	146 int i, j, count=0;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	147 PyObject list, o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	148 SOCKET fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	149
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	150 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	151 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	152 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	153 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	154 list = PyList_New(count);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	155 if (!list)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	156 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	157
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	158 i = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	159 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	160 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	161 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	162 #ifndef _MSC_VER
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	163 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	164 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	165 "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	166 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	167 }
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	168 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	169 o = fd2obj[j].obj;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	170 fd2obj[j].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	171 /* transfer ownership */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	172 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	173 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	174
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	175 i++;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	176 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	177 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	178 return list;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	179 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	180 Py_DECREF(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	181 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	182 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	183
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	184
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	185 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	186 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	187 {
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	188 #ifdef MS_WINDOWS
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	189 /* This would be an awful lot of stack space on Windows! */
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	190 pylist rfd2obj, wfd2obj, *efd2obj;
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	191 #else
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	192 pylist rfd2obj[FD_SETSIZE + 3];
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	193 pylist wfd2obj[FD_SETSIZE + 3];
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	194 pylist efd2obj[FD_SETSIZE + 3];
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	195 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	196 PyObject ifdlist, ofdlist, *efdlist;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	197 PyObject *ret = NULL;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	198 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	199 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	200 double timeout;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	201 struct timeval tv, *tvp;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	202 long seconds;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	203 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	204 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	205
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	206 /* 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	207 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	208 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	209 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	210
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	211 if (tout == Py_None)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	212 tvp = (struct timeval *)0;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	213 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	214 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	215 "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	216 return NULL;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	217 }
1390 cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same Guido van Rossum <guido@python.org> parents: 1284 diff changeset	218 else {
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	219 if (timeout > (double)LONG_MAX) {
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	220 PyErr_SetString(PyExc_OverflowError, "timeout period too long");
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	221 return NULL;
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	222 }
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	223 seconds = (long)timeout;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	224 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	225 tv.tv_sec = seconds;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	226 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	227 tvp = &tv;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	228 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	229
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	230 /* sanity check first three arguments */
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	231 if (!PyList_Check(ifdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	232 !PyList_Check(ofdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	233 !PyList_Check(efdlist))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	234 {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	235 PyErr_SetString(PyExc_TypeError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	236 "arguments 1-3 must be lists");
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	237 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	238 }
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	239
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	240 #ifdef MS_WINDOWS
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	241 /* Allocate memory for the lists */
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	242 rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	243 wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	244 efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 3);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	245 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	246 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	247 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	248 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	249 return NULL;
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	250 }
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	251 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	252 /* 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	253 * propagates the Python exception set in list2set()
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	254 */
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	255 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	256 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	257 efd2obj[0].sentinel = -1;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	258 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	259 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	260 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	261 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	262 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	263 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	264 max = imax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	265 if (omax > max) max = omax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	266 if (emax > max) max = emax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	267
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	268 Py_BEGIN_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	269 n = select(max, &ifdset, &ofdset, &efdset, tvp);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	270 Py_END_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	271
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	272 if (n < 0) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	273 PyErr_SetFromErrno(SelectError);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	274 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	275 else if (n == 0) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	276 /* optimization */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	277 ifdlist = PyList_New(0);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	278 if (ifdlist) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	279 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	280 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	281 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	282 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	283 else {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	284 /* 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	285 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	286 is that acceptable?
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	287 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	288 ifdlist = set2list(&ifdset, rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	289 ofdlist = set2list(&ofdset, wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	290 efdlist = set2list(&efdset, efd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	291 if (PyErr_Occurred())
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	292 ret = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	293 else
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	294 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	295
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	296 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	297 Py_DECREF(ofdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	298 Py_DECREF(efdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	299 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	300
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	301 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	302 reap_obj(rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	303 reap_obj(wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	304 reap_obj(efd2obj);
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	305 #ifdef MS_WINDOWS
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	306 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	307 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	308 PyMem_DEL(efd2obj);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	309 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	310 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	311 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	312
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	313 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	314 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	315 * poll() support
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	318 typedef struct {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	319 PyObject_HEAD
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	320 PyObject *dict;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	321 int ufd_uptodate;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	322 int ufd_len;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	323 struct pollfd *ufds;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	324 } pollObject;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	325
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	326 staticforward PyTypeObject poll_Type;
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 /* 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	329 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	330 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	331
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	332 static int
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	333 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	334 {
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	335 int i, pos;
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	336 PyObject key, value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	337
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	338 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	339 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	340 if (self->ufds == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	341 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	342 return 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	343 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	344
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	345 i = pos = 0;
18754 3cd03a64c338 Make more warnings go away on the SGI compiler. Fred Drake <fdrake@acm.org> parents: 18603 diff changeset	346 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	347 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	348 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	349 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	350 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	351 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	352 return 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	353 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	354
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	355 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	356 "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	357 Register a file descriptor with the polling object.\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	358 fd -- either an integer, or an object with a fileno() method returning an int.\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	359 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	360
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	361 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	362 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	363 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	364 PyObject o, key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	365 int fd, events = POLLIN \| POLLPRI \| POLLOUT;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	366
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	367 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	368 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	369 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	370
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	371 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	372 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	373
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	374 /* 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	375 file descriptor, and the value is the event mask. */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	376 if ( (NULL == (key = PyInt_FromLong(fd))) \|\|
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	377 (NULL == (value = PyInt_FromLong(events))) \|\|
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	378 (PyDict_SetItem(self->dict, key, value)) == -1) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	379 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	380 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	381 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	382
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	383 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	384 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	385 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	386
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	387 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	388 "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	389 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	390
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	391 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	392 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	393 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	394 PyObject o, key;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	395 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	396
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	397 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	398 return NULL;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	401 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	402 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	403 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	404
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	405 /* 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	406 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	407 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	408 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	409
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	410 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	411 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	412 /* 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	413 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	414 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	415 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	416
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	417 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	418 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	419
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	420 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	421 return Py_None;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	424 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	425 "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	426 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	427 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	428
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	429 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	430 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	431 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	432 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	433 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	434 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	435
17873 1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects. Fred Drake <fdrake@acm.org> parents: 16946 diff changeset	436 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	437 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	438 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	439
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	440 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	441 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	442 timeout = -1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	443 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	444 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	445 "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	446 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	447 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	448
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	449 /* 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	450 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	451 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	452 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	453
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	454 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	455 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	456 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	457 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	458
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	459 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	460 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	461 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	462 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	463
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	464 /* build the result list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	465
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	466 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	467 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	468 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	469 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	470 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	471 /* 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	472 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	473 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	474 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	475 /* 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	476 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	477 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	478 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	479 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	480 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	481 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	482 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	483 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	484 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	485 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	486 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	487
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	488 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	489 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	490 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	491 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	492 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	493 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	494 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	495 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	496 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	497 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	498 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	499 }
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 return result_list;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	502
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	503 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	504 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	505 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	506 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	507
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	508 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	509 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	510 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	511 {"unregister", (PyCFunction)poll_unregister,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	512 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	513 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	514 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	515 {NULL, NULL} /* sentinel */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	516 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	517
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	518 static pollObject *
14277 984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>: Fred Drake <fdrake@acm.org> parents: 14182 diff changeset	519 newPollObject(void)
14174 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 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	522 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	523 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	524 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	525 /* 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	526 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	527 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	528 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	529 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	530 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	531 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	532 return NULL;
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 return self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	535 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	536
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	537 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	538 poll_dealloc(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	539 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	540 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	541 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	542 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	543 PyObject_Del(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	544 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	545
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	546 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	547 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	548 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	549 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	550 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	551
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	552 statichere PyTypeObject poll_Type = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	553 /* 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	554 * 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	555 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	556 0, /ob_size/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	557 "poll", /tp_name/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	558 sizeof(pollObject), /tp_basicsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	559 0, /tp_itemsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	560 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	561 (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	562 0, /tp_print/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	563 (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	564 0, /tp_setattr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	565 0, /tp_compare/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	566 0, /tp_repr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	567 0, /tp_as_number/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	568 0, /tp_as_sequence/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	569 0, /tp_as_mapping/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	570 0, /tp_hash/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	571 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	572
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	573 static char poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	574 "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	575 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	576
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	577 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	578 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	579 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	580 pollObject *rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	581
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	582 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	583 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	584 rv = newPollObject();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	585 if ( rv == NULL )
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	586 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	587 return (PyObject *)rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	588 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	589 #endif /* HAVE_POLL */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	590
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	591 static char select_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	592 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	593 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	594 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	595 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	596 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	597 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	598 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	599 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	600 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	601 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	602 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	603 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	604 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	605 or None, the call will never time out.\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 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	608 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	609 that are ready.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	610 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	611 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	612 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	613
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	614 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	615 {"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	616 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	617 {"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	618 #endif /* HAVE_POLL */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	619 {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	620 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	621
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	622 static char module_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	623 "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	624 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	625 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	626 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	627
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	628 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	629 * 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	630 * 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	631 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	632
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	633 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	634 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	635 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	636 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	637 if (v == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	638 /* 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	639 PyErr_Clear();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	640 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	641 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	642 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	643 Py_DECREF(v);
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
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 8823 diff changeset	647 DL_EXPORT(void)
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13593 diff changeset	648 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	649 {
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	650 PyObject m, d;
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	651 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	652 d = PyModule_GetDict(m);
6367 2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 4734 diff changeset	653 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	654 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	655 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	656 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	657 insint(d, "POLLIN", POLLIN);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	658 insint(d, "POLLPRI", POLLPRI);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	659 insint(d, "POLLOUT", POLLOUT);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	660 insint(d, "POLLERR", POLLERR);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	661 insint(d, "POLLHUP", POLLHUP);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	662 insint(d, "POLLNVAL", POLLNVAL);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	663
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	664 #ifdef POLLRDNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	665 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	666 #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	667 #ifdef POLLRDBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	668 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	669 #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	670 #ifdef POLLWRNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	671 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	672 #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	673 #ifdef POLLWRBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	674 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	675 #endif
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	676 #ifdef POLLMSG
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	677 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	678 #endif
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	679 #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	680 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 19283:b865cd5c1925 legacy-trunk