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

annotate Modules/selectmodule.c @ 17581:c1937faabb23 2.1

Added support for optional explanation parameter to the \versionadded macro. Refactored do_cmd_versionadded() and do_cmd_versionchanged() to do most of the work in a helper function, with the do_cmd_*() wrappers just supplying a portion of the replacement text.

author	Fred Drake <fdrake@acm.org>
date	Wed, 18 Apr 2001 17:29:14 +0000
parents	31e302e94da8
children	1eb12259feea

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
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	24 #ifdef HAVE_POLL_H
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	25 #include <poll.h>
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	26 #endif
4600 d36250aefb82 Keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	27
4621 a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	28 #ifdef __sgi
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	29 /* 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	30 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	31 #endif
a2f171ce25f8 Add ``extern void bzero();'' for SGI, to keep gcc -Wall happy. Guido van Rossum <guido@python.org> parents: 4600 diff changeset	32
11243 6aac31cd2102 Patch by Mark Hammond to avoid certain header files on Windows/CE. Guido van Rossum <guido@python.org> parents: 9588 diff changeset	33 #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	34 #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	35 #endif
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	36
6626 5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	37 #if defined(PYOS_OS2)
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	38 #include <sys/time.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	39 #include <utils.h>
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	40 #endif
5e31d381fa47 os2 patch by Jeff Rush Guido van Rossum <guido@python.org> parents: 6367 diff changeset	41
3738 ce74bba8a6a6 Slightly different Windows ifdefs Guido van Rossum <guido@python.org> parents: 3675 diff changeset	42 #ifdef MS_WINDOWS
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	43 #include <winsock.h>
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	44 #else
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	45 #ifdef __BEOS__
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	46 #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	47 #define SOCKET int
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	48 #else
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	49 #define SOCKET int
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	50 #endif
8823 f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth. Guido van Rossum <guido@python.org> parents: 8616 diff changeset	51 #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	52
16946 31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	53 #ifdef RISCOS
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	54 #define NO_DUP
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	55 #undef off_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	56 #undef uid_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	57 #undef gid_t
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	58 #undef errno
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	59 #include "socklib.h"
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	60 #endif /* RISCOS */
31e302e94da8 RISCOS changes by dschwertberger Guido van Rossum <guido@python.org> parents: 15512 diff changeset	61
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	62 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	63
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	64 /* 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	65 typedef struct {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	66 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	67 SOCKET fd;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	68 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	69 } pylist;
d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	70
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	71 static void
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	72 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	73 {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	74 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	75 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	76 Py_XDECREF(fd2obj[i].obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	77 fd2obj[i].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	78 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	79 fd2obj[0].sentinel = -1;
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
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	82
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	83 /* 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	84 returns a number >= 0
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	85 */
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	86 static int
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	87 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	88 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	89 int i;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	90 int max = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	91 int index = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	92 int len = PyList_Size(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	93 PyObject* o = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	94
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	95 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	96 FD_ZERO(set);
2611 01687ce43708 fix subtle refcnt bug Guido van Rossum <guido@python.org> parents: 2061 diff changeset	97
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	98 for (i = 0; i < len; i++) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	99 SOCKET v;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	100
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	101 /* any intervening fileno() calls could decr this refcnt */
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	102 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	103 return -1;
4730 62cf7d589300 list2set(): PyList_GetItem could fail. Barry Warsaw <barry@python.org> parents: 4700 diff changeset	104
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	105 Py_INCREF(o);
13593 df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	106 v = PyObject_AsFileDescriptor( o );
df64cc0e84e2 Use PyObject_AsFileDescriptor Andrew M. Kuchling <amk@amk.ca> parents: 13550 diff changeset	107 if (v == -1) goto finally;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	108
11656 db756d31e727 According to Ron Bickers, and with apparent approval of Chris Guido van Rossum <guido@python.org> parents: 11243 diff changeset	109 #if defined(_MSC_VER)
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	110 max = 0; /* not used for Win32 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	111 #else /* !_MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	112 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	113 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	114 "filedescriptor out of range in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	115 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	116 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	117 if (v > max)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	118 max = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	119 #endif /* _MSC_VER */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	120 FD_SET(v, set);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	121
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	122 /* 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	123 if (index >= FD_SETSIZE) {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	124 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	125 "too many file descriptors in select()");
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	126 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	127 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	128 fd2obj[index].obj = o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	129 fd2obj[index].fd = v;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	130 fd2obj[index].sentinel = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	131 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	132 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	133 return max+1;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	134
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	135 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	136 Py_XDECREF(o);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	137 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	138 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	139
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	140 /* 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	141 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	142 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	143 {
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	144 int i, j, count=0;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	145 PyObject list, o;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	146 SOCKET fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	147
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	148 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	149 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	150 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	151 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	152 list = PyList_New(count);
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	153 if (!list)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	154 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	155
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	156 i = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	157 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	158 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	159 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	160 #ifndef _MSC_VER
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	161 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	162 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	163 "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	164 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	165 }
3675 d617de15774b Yet another pass at fd2obj -- this time for Windows Guido van Rossum <guido@python.org> parents: 2611 diff changeset	166 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	167 o = fd2obj[j].obj;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	168 fd2obj[j].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	169 /* transfer ownership */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	170 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	171 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	172
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	173 i++;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	174 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	175 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	176 return list;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	177 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	178 Py_DECREF(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	179 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	180 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	181
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
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	183 static PyObject *
13502 7348cceee8fa ANSI-fication Peter Schneider-Kamp <nowonder@nowonder.de> parents: 13256 diff changeset	184 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	185 {
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	186 #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	187 /* 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	188 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	189 #else
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	190 pylist rfd2obj[FD_SETSIZE + 3];
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	191 pylist wfd2obj[FD_SETSIZE + 3];
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	192 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	193 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	194 PyObject ifdlist, ofdlist, *efdlist;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	195 PyObject *ret = NULL;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	196 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	197 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	198 double timeout;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	199 struct timeval tv, *tvp;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	200 long seconds;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	201 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	202 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	203
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	204 /* 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	205 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	206 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	207 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	208
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	209 if (tout == Py_None)
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	210 tvp = (struct timeval *)0;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	211 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	212 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	213 "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	214 return NULL;
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	215 }
1390 cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same Guido van Rossum <guido@python.org> parents: 1284 diff changeset	216 else {
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	217 if (timeout > (double)LONG_MAX) {
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	218 PyErr_SetString(PyExc_OverflowError, "timeout period too long");
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	219 return NULL;
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	220 }
185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	221 seconds = (long)timeout;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	222 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	223 tv.tv_sec = seconds;
13079 185003d09e76 Trent Mick: Guido van Rossum <guido@python.org> parents: 12576 diff changeset	224 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	225 tvp = &tv;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	226 }
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	227
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	228 /* sanity check first three arguments */
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	229 if (!PyList_Check(ifdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	230 !PyList_Check(ofdlist) \|\|
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	231 !PyList_Check(efdlist))
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	232 {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	233 PyErr_SetString(PyExc_TypeError,
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	234 "arguments 1-3 must be lists");
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	235 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	236 }
902 a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	237
8616 2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	238 #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	239 /* 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	240 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	241 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	242 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	243 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	244 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	245 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring. Guido van Rossum <guido@python.org> parents: 11882 diff changeset	246 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	247 return NULL;
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	248 }
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap. Guido van Rossum <guido@python.org> parents: 8570 diff changeset	249 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	250 /* 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	251 * propagates the Python exception set in list2set()
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	252 */
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	253 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	254 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	255 efd2obj[0].sentinel = -1;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	256 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	257 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	258 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	259 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	260 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	261 goto finally;
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	262 max = imax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	263 if (omax > max) max = omax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	264 if (emax > max) max = emax;
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	265
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	266 Py_BEGIN_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	267 n = select(max, &ifdset, &ofdset, &efdset, tvp);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	268 Py_END_ALLOW_THREADS
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	269
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	270 if (n < 0) {
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	271 PyErr_SetFromErrno(SelectError);
cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	272 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	273 else if (n == 0) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	274 /* optimization */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	275 ifdlist = PyList_New(0);
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	276 if (ifdlist) {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	277 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	278 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	279 }
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	280 }
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	281 else {
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	282 /* 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	283 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	284 is that acceptable?
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	285 */
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	286 ifdlist = set2list(&ifdset, rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	287 ofdlist = set2list(&ofdset, wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	288 efdlist = set2list(&efdset, efd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	289 if (PyErr_Occurred())
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	290 ret = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	291 else
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	292 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	293
4700 825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	294 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	295 Py_DECREF(ofdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	296 Py_DECREF(efdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	297 }
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	298
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	299 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	300 reap_obj(rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	301 reap_obj(wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including Barry Warsaw <barry@python.org> parents: 4692 diff changeset	302 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	303 #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	304 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	305 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	306 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	307 #endif
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	308 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	309 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	310
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	311 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	312 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	313 * poll() support
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	316 typedef struct {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	317 PyObject_HEAD
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	318 PyObject *dict;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	319 int ufd_uptodate;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	320 int ufd_len;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	321 struct pollfd *ufds;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	322 } pollObject;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	323
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	324 staticforward PyTypeObject poll_Type;
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 /* 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	327 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	328 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	329
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	330 static int
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	331 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	332 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	333 int i, j, pos;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	334 PyObject key, value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	335
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	336 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	337 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	338 if (self->ufds == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	339 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	340 return 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	341 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	342
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	343 i = pos = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	344 while ((j = PyDict_Next(self->dict, &pos, &key, &value))) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	345 self->ufds[i].fd = PyInt_AsLong(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	346 self->ufds[i].events = PyInt_AsLong(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	347 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	348 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	349 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	350 return 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	351 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	352
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	353 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	354 "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	355 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	356 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	357 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	358
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	359 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	360 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	361 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	362 PyObject o, key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	363 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	364
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	365 if (!PyArg_ParseTuple(args, "O\|i", &o, &events)) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	366 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	367 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	368
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	369 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	370 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	371
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	372 /* 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	373 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	374 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	375 (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	376 (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	377 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	378 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	379 self->ufd_uptodate = 0;
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 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	382 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	383 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	384
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	385 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	386 "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	387 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	388
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	389 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	390 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	391 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	392 PyObject o, key;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	393 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	394
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	395 if (!PyArg_ParseTuple(args, "O", &o)) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	396 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	397 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	398
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	399 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	400 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	401 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	402
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	403 /* 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	404 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	405 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	406 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	407
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	408 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	409 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	410 /* 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	411 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	412 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	413 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	414
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	415 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	416 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	417
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	418 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	419 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	420 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	421
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	422 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	423 "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	424 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	425 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	426
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	427 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	428 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	429 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	430 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	431 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	432 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	433
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	434 if (!PyArg_ParseTuple(args, "\|O", &tout)) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	435 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	436 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	437
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	438 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	439 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	440 timeout = -1;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	441 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	442 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	443 "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	444 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	445 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	446
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	447 /* 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	448 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	449 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	450 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	451
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	452 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	453 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	454 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	455 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	456
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	457 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	458 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	459 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	460 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	461
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	462 /* build the result list */
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 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	465 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	466 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	467 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	468 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	469 /* 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	470 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	471 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	472 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	473 /* 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	474 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	475 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	476 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	477 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	478 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	479 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	480 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	481 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	482 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	483 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	484 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	485
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	486 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	487 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	488 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	489 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	490 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	491 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	492 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	493 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	494 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	495 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	496 i++;
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 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	499 return result_list;
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 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	502 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	503 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	504 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	505
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	506 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	507 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	508 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	509 {"unregister", (PyCFunction)poll_unregister,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	510 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	511 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	512 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	513 {NULL, NULL} /* sentinel */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	514 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	515
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	516 static pollObject *
14277 984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>: Fred Drake <fdrake@acm.org> parents: 14182 diff changeset	517 newPollObject(void)
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	518 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	519 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	520 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	521 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	522 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	523 /* 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	524 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	525 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	526 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	527 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	528 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	529 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	530 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	531 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	532 return self;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	535 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	536 poll_dealloc(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	537 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	538 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	539 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	540 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	541 PyObject_Del(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	542 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	543
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	544 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	545 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	546 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	547 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	548 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	549
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	550 statichere PyTypeObject poll_Type = {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	551 /* 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	552 * 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	553 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	554 0, /ob_size/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	555 "poll", /tp_name/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	556 sizeof(pollObject), /tp_basicsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	557 0, /tp_itemsize/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	558 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	559 (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	560 0, /tp_print/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	561 (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	562 0, /tp_setattr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	563 0, /tp_compare/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	564 0, /tp_repr/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	565 0, /tp_as_number/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	566 0, /tp_as_sequence/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	567 0, /tp_as_mapping/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	568 0, /tp_hash/
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	569 };
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	570
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	571 static char poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	572 "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	573 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	574
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	575 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	576 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	577 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	578 pollObject *rv;
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 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	581 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	582 rv = newPollObject();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	583 if ( rv == NULL )
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	584 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	585 return (PyObject *)rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	586 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	587 #endif /* HAVE_POLL */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	588
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	589 static char select_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	590 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	591 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	592 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	593 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	594 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	595 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	596 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	597 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	598 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	599 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	600 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	601 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	602 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	603 or None, the call will never time out.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	604 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	605 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	606 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	607 that are ready.\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	608 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	609 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	610 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	611
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	612 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	613 {"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	614 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	615 {"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	616 #endif /* HAVE_POLL */
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	617 {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	618 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for Guido van Rossum <guido@python.org> parents: diff changeset	619
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	620 static char module_doc[] =
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	621 "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	622 \n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	623 * IMPORTANT NOTICE *\n\
bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	624 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	625
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	626 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	627 * 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	628 * 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	629 */
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	630
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	631 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	632 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	633 {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	634 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	635 if (v == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	636 /* 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	637 PyErr_Clear();
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	638 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	639 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	640 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	641 Py_DECREF(v);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	642 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	643 }
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	644
9588 38023a425e48 Add DL_EXPORT() to all modules that could possibly be used Guido van Rossum <guido@python.org> parents: 8823 diff changeset	645 DL_EXPORT(void)
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13593 diff changeset	646 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	647 {
4692 cb405b9696d4 Several changes... Guido please take a look! Barry Warsaw <barry@python.org> parents: 4621 diff changeset	648 PyObject m, d;
8570 bd695de18ecf Added doc strings. Guido van Rossum <guido@python.org> parents: 6626 diff changeset	649 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	650 d = PyModule_GetDict(m);
6367 2c29b8982643 Apply two changes, systematically: Guido van Rossum <guido@python.org> parents: 4734 diff changeset	651 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	652 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	653 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	654 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	655 insint(d, "POLLIN", POLLIN);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	656 insint(d, "POLLPRI", POLLPRI);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	657 insint(d, "POLLOUT", POLLOUT);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	658 insint(d, "POLLERR", POLLERR);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	659 insint(d, "POLLHUP", POLLHUP);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	660 insint(d, "POLLNVAL", POLLNVAL);
35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	661
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	662 #ifdef POLLRDNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	663 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	664 #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	665 #ifdef POLLRDBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	666 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	667 #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	668 #ifdef POLLWRNORM
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	669 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	670 #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	671 #ifdef POLLWRBAND
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	672 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	673 #endif
14182 c85a80db6845 Not every OS that support poll seems to support POLLMSG. Sjoerd Mullender <sjoerd@acm.org> parents: 14174 diff changeset	674 #ifdef POLLMSG
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	675 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	676 #endif
14174 35b7989ba20c Add interface to poll() system call (SF patch #100852) Andrew M. Kuchling <amk@amk.ca> parents: 13761 diff changeset	677 #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	678 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 17581:c1937faabb23 2.1