Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 39496:352ffe77b71d legacy-trunk

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Patch #1535500: fix segfault in BZ2File.writelines and make sure it raises the correct exceptions.
author Georg Brandl <georg@python.org>
date Mon, 14 Aug 2006 21:42:55 +0000
parents c67b23397f30
children 2da42dcbb8ce 6620a510e9a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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.
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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!
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parents: 4621
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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.
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d617de15774b Yet another pass at fd2obj -- this time for Windows
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parents: 2611
diff changeset
7 */
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parents:
diff changeset
8
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9 #include "Python.h"
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parents:
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10
37935
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
11 #ifdef __APPLE__
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parents: 36501
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12 /* Perform runtime testing for a broken poll on OSX to make it easier
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
13 * to use the same binary on multiple releases of the OS.
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
14 */
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
15 #undef HAVE_BROKEN_POLL
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parents: 36501
diff changeset
16 #endif
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
17
15512
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512.
Tim Peters <tim.peters@gmail.com>
parents: 14918
diff changeset
18 /* Windows #defines FD_SETSIZE to 64 if FD_SETSIZE isn't already defined.
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512.
Tim Peters <tim.peters@gmail.com>
parents: 14918
diff changeset
19 64 is too small (too many people have bumped into that limit).
e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512.
Tim Peters <tim.peters@gmail.com>
parents: 14918
diff changeset
20 Here we boost it.
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Tim Peters <tim.peters@gmail.com>
parents: 14918
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21 Users who want even more than the boosted limit should #define
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parents: 14918
diff changeset
22 FD_SETSIZE higher before this; e.g., via compiler /D switch.
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Tim Peters <tim.peters@gmail.com>
parents: 14918
diff changeset
23 */
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parents: 14918
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24 #if defined(MS_WINDOWS) && !defined(FD_SETSIZE)
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parents: 14918
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25 #define FD_SETSIZE 512
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diff changeset
26 #endif
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parents: 14918
diff changeset
27
18603
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28 #if defined(HAVE_POLL_H)
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Andrew M. Kuchling <amk@amk.ca>
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29 #include <poll.h>
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30 #elif defined(HAVE_SYS_POLL_H)
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31 #include <sys/poll.h>
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diff changeset
32 #endif
4600
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33
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34 #ifdef __sgi
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35 /* This is missing from unistd.h */
13667
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36 extern void bzero(void *, int);
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37 #endif
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38
38716
42808526511c Patch #1495999: Part two of Windows CE changes.
Martin v. Löwis <martin@v.loewis.de>
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39 #ifdef HAVE_SYS_TYPES_H
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1940892d2fe3 Merge alpha100 branch back to main trunk
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40 #include <sys/types.h>
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parents: 9588
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41 #endif
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parents: 2611
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42
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c454b76d51e7 OS/2 EMX port changes (Modules part of patch #450267):
Andrew MacIntyre <andymac@bullseye.apana.org.au>
parents: 21712
diff changeset
43 #if defined(PYOS_OS2) && !defined(PYCC_GCC)
6626
5e31d381fa47 os2 patch by Jeff Rush
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44 #include <sys/time.h>
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45 #include <utils.h>
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46 #endif
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47
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ce74bba8a6a6 Slightly different Windows ifdefs
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48 #ifdef MS_WINDOWS
39043
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS.
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49 # include <winsock.h>
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d617de15774b Yet another pass at fd2obj -- this time for Windows
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50 #else
39043
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51 # define SOCKET int
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52 # ifdef __BEOS__
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53 # include <net/socket.h>
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54 # elif defined(__VMS)
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55 # include <socket.h>
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS.
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parents: 38716
diff changeset
56 # endif
8823
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth.
Guido van Rossum <guido@python.org>
parents: 8616
diff changeset
57 #endif
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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58
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31e302e94da8 RISCOS changes by dschwertberger
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59
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60 static PyObject *SelectError;
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a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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61
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62 /* list of Python objects and their file descriptor */
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63 typedef struct {
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64 PyObject *obj; /* owned reference */
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d617de15774b Yet another pass at fd2obj -- this time for Windows
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65 SOCKET fd;
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66 int sentinel; /* -1 == sentinel */
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d617de15774b Yet another pass at fd2obj -- this time for Windows
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67 } pylist;
d617de15774b Yet another pass at fd2obj -- this time for Windows
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68
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69 static void
19328
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
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parents: 19311
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70 reap_obj(pylist fd2obj[FD_SETSIZE + 1])
4700
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71 {
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72 int i;
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b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
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parents: 19311
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73 for (i = 0; i < FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
4700
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74 Py_XDECREF(fd2obj[i].obj);
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75 fd2obj[i].obj = NULL;
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76 }
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77 fd2obj[0].sentinel = -1;
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78 }
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79
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80
4692
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81 /* returns -1 and sets the Python exception if an error occurred, otherwise
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parents: 4621
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82 returns a number >= 0
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parents: 4621
diff changeset
83 */
3675
d617de15774b Yet another pass at fd2obj -- this time for Windows
Guido van Rossum <guido@python.org>
parents: 2611
diff changeset
84 static int
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
85 seq2set(PyObject *seq, fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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parents:
diff changeset
86 {
4700
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87 int i;
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88 int max = -1;
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parents: 4692
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89 int index = 0;
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
90 int len = -1;
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
91 PyObject* fast_seq = NULL;
4700
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92 PyObject* o = NULL;
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parents: 4692
diff changeset
93
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parents: 4692
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94 fd2obj[0].obj = (PyObject*)0; /* set list to zero size */
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parents: 4692
diff changeset
95 FD_ZERO(set);
2611
01687ce43708 fix subtle refcnt bug
Guido van Rossum <guido@python.org>
parents: 2061
diff changeset
96
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
97 fast_seq=PySequence_Fast(seq, "arguments 1-3 must be sequences");
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
98 if (!fast_seq)
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
99 return -1;
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
100
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
101 len = PySequence_Fast_GET_SIZE(fast_seq);
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
102
4700
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103 for (i = 0; i < len; i++) {
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104 SOCKET v;
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105
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106 /* any intervening fileno() calls could decr this refcnt */
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
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parents: 27815
diff changeset
107 if (!(o = PySequence_Fast_GET_ITEM(fast_seq, i)))
4734
3db423515626 list2set(): correct return value (an int, not a PyObject*).
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parents: 4730
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108 return -1;
4730
62cf7d589300 list2set(): PyList_GetItem could fail.
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parents: 4700
diff changeset
109
4700
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parents: 4692
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110 Py_INCREF(o);
13593
df64cc0e84e2 Use PyObject_AsFileDescriptor
Andrew M. Kuchling <amk@amk.ca>
parents: 13550
diff changeset
111 v = PyObject_AsFileDescriptor( o );
df64cc0e84e2 Use PyObject_AsFileDescriptor
Andrew M. Kuchling <amk@amk.ca>
parents: 13550
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112 if (v == -1) goto finally;
4700
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diff changeset
113
11656
db756d31e727 According to Ron Bickers, and with apparent approval of Chris
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114 #if defined(_MSC_VER)
4700
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115 max = 0; /* not used for Win32 */
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diff changeset
116 #else /* !_MSC_VER */
4692
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parents: 4621
diff changeset
117 if (v < 0 || v >= FD_SETSIZE) {
4700
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118 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including
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parents: 4692
diff changeset
119 "filedescriptor out of range in select()");
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parents: 4692
diff changeset
120 goto finally;
4692
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parents: 4621
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121 }
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parents: 4621
diff changeset
122 if (v > max)
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Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
123 max = v;
4700
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parents: 4692
diff changeset
124 #endif /* _MSC_VER */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
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parents: 4621
diff changeset
125 FD_SET(v, set);
4700
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parents: 4692
diff changeset
126
4692
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parents: 4621
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127 /* add object and its file descriptor to the list */
cb405b9696d4 Several changes... Guido *please* take a look!
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parents: 4621
diff changeset
128 if (index >= FD_SETSIZE) {
4700
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129 PyErr_SetString(PyExc_ValueError,
825038d98ab6 Reworked to eliminate all potential memory problems, including
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parents: 4692
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130 "too many file descriptors in select()");
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parents: 4692
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131 goto finally;
4692
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parents: 4621
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132 }
cb405b9696d4 Several changes... Guido *please* take a look!
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parents: 4621
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133 fd2obj[index].obj = o;
cb405b9696d4 Several changes... Guido *please* take a look!
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parents: 4621
diff changeset
134 fd2obj[index].fd = v;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
135 fd2obj[index].sentinel = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
136 fd2obj[++index].sentinel = -1;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
137 }
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
138 Py_DECREF(fast_seq);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
139 return max+1;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
140
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
141 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
142 Py_XDECREF(o);
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
143 Py_DECREF(fast_seq);
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
144 return -1;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
145 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
146
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
147 /* returns NULL and sets the Python exception if an error occurred */
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
148 static PyObject *
19328
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
149 set2list(fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
150 {
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
151 int i, j, count=0;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
152 PyObject *list, *o;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
153 SOCKET fd;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
154
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
155 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
156 if (FD_ISSET(fd2obj[j].fd, set))
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
157 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
158 }
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
159 list = PyList_New(count);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
160 if (!list)
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
161 return NULL;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
162
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
163 i = 0;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
164 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
165 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
166 if (FD_ISSET(fd, set)) {
3675
d617de15774b Yet another pass at fd2obj -- this time for Windows
Guido van Rossum <guido@python.org>
parents: 2611
diff changeset
167 #ifndef _MSC_VER
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
168 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
169 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
170 "filedescriptor out of range returned in select()");
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
171 goto finally;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
172 }
3675
d617de15774b Yet another pass at fd2obj -- this time for Windows
Guido van Rossum <guido@python.org>
parents: 2611
diff changeset
173 #endif
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
174 o = fd2obj[j].obj;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
175 fd2obj[j].obj = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
176 /* transfer ownership */
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
177 if (PyList_SetItem(list, i, o) < 0)
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
178 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
179
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
180 i++;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
181 }
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
182 }
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
183 return list;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
184 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
185 Py_DECREF(list);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
186 return NULL;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
187 }
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
188
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
189 #undef SELECT_USES_HEAP
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
190 #if FD_SETSIZE > 1024
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
191 #define SELECT_USES_HEAP
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
192 #endif /* FD_SETSIZE > 1024 */
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
193
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
194 static PyObject *
13502
7348cceee8fa ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
195 select_select(PyObject *self, PyObject *args)
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
196 {
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
197 #ifdef SELECT_USES_HEAP
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
198 pylist *rfd2obj, *wfd2obj, *efd2obj;
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
199 #else /* !SELECT_USES_HEAP */
19328
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
200 /* XXX: All this should probably be implemented as follows:
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
201 * - find the highest descriptor we're interested in
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
202 * - add one
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
203 * - that's the size
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
204 * See: Stevens, APitUE, $12.5.1
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
205 */
19328
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
206 pylist rfd2obj[FD_SETSIZE + 1];
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
207 pylist wfd2obj[FD_SETSIZE + 1];
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
208 pylist efd2obj[FD_SETSIZE + 1];
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
209 #endif /* SELECT_USES_HEAP */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
210 PyObject *ifdlist, *ofdlist, *efdlist;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
211 PyObject *ret = NULL;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
212 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
213 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
214 double timeout;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
215 struct timeval tv, *tvp;
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
216 long seconds;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
217 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
218 int n;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
219
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
220 /* convert arguments */
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
221 if (!PyArg_UnpackTuple(args, "select", 3, 4,
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
222 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
223 return NULL;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
224
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
225 if (tout == Py_None)
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
226 tvp = (struct timeval *)0;
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
227 else if (!PyNumber_Check(tout)) {
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
228 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
229 "timeout must be a float or None");
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
230 return NULL;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
231 }
1390
cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same
Guido van Rossum <guido@python.org>
parents: 1284
diff changeset
232 else {
26270
e270c0d41a05 Don't use PyNumber_Float() since it's is nearly useless. Instead, rely on
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 26153
diff changeset
233 timeout = PyFloat_AsDouble(tout);
e270c0d41a05 Don't use PyNumber_Float() since it's is nearly useless. Instead, rely on
Neil Schemenauer <nascheme@enme.ucalgary.ca>
parents: 26153
diff changeset
234 if (timeout == -1 && PyErr_Occurred())
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
235 return NULL;
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
236 if (timeout > (double)LONG_MAX) {
19311
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide.
Barry Warsaw <barry@python.org>
parents: 19310
diff changeset
237 PyErr_SetString(PyExc_OverflowError,
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide.
Barry Warsaw <barry@python.org>
parents: 19310
diff changeset
238 "timeout period too long");
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
239 return NULL;
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
240 }
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
241 seconds = (long)timeout;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
242 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
243 tv.tv_sec = seconds;
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
244 tv.tv_usec = (long)(timeout*1000000.0);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
245 tvp = &tv;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
246 }
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
247
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
248
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
249 #ifdef SELECT_USES_HEAP
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
250 /* Allocate memory for the lists */
19328
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
251 rfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
252 wfd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
b41638a11e4e Stop adding 3 to FD_SETSIZE -- it makes no sense. If it turns out it
Tim Peters <tim.peters@gmail.com>
parents: 19311
diff changeset
253 efd2obj = PyMem_NEW(pylist, FD_SETSIZE + 1);
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
254 if (rfd2obj == NULL || wfd2obj == NULL || efd2obj == NULL) {
12576
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 11882
diff changeset
255 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 11882
diff changeset
256 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 11882
diff changeset
257 if (efd2obj) PyMem_DEL(efd2obj);
27815
cb1eeaeb74a0 SF bug 684667: Modules/selectmodule.c returns NULL without exception set.
Tim Peters <tim.peters@gmail.com>
parents: 26270
diff changeset
258 return PyErr_NoMemory();
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
259 }
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
260 #endif /* SELECT_USES_HEAP */
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
261 /* Convert sequences to fd_sets, and get maximum fd number
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
262 * propagates the Python exception set in seq2set()
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
263 */
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
264 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
265 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
266 efd2obj[0].sentinel = -1;
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
267 if ((imax=seq2set(ifdlist, &ifdset, rfd2obj)) < 0)
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
268 goto finally;
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
269 if ((omax=seq2set(ofdlist, &ofdset, wfd2obj)) < 0)
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
270 goto finally;
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
271 if ((emax=seq2set(efdlist, &efdset, efd2obj)) < 0)
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
272 goto finally;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
273 max = imax;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
274 if (omax > max) max = omax;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
275 if (emax > max) max = emax;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
276
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
277 Py_BEGIN_ALLOW_THREADS
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
278 n = select(max, &ifdset, &ofdset, &efdset, tvp);
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
279 Py_END_ALLOW_THREADS
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
280
25399
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
281 #ifdef MS_WINDOWS
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
282 if (n == SOCKET_ERROR) {
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
283 PyErr_SetExcFromWindowsErr(SelectError, WSAGetLastError());
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
284 }
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
285 #else
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
286 if (n < 0) {
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
287 PyErr_SetFromErrno(SelectError);
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
288 }
25399
97424b99df91 On Windows, call WSAGetLastError() to retrieve the error number.
Thomas Heller <theller@ctypes.org>
parents: 24408
diff changeset
289 #endif
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
290 else if (n == 0) {
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
291 /* optimization */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
292 ifdlist = PyList_New(0);
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
293 if (ifdlist) {
30683
3b59fa5d25b1 Simplify and speedup uses of Py_BuildValue():
Raymond Hettinger <python@rcn.com>
parents: 30402
diff changeset
294 ret = PyTuple_Pack(3, ifdlist, ifdlist, ifdlist);
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
295 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
296 }
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
297 }
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
298 else {
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
299 /* any of these three calls can raise an exception. it's more
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
300 convenient to test for this after all three calls... but
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
301 is that acceptable?
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
302 */
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
303 ifdlist = set2list(&ifdset, rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
304 ofdlist = set2list(&ofdset, wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
305 efdlist = set2list(&efdset, efd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
306 if (PyErr_Occurred())
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
307 ret = NULL;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
308 else
30683
3b59fa5d25b1 Simplify and speedup uses of Py_BuildValue():
Raymond Hettinger <python@rcn.com>
parents: 30402
diff changeset
309 ret = PyTuple_Pack(3, ifdlist, ofdlist, efdlist);
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
310
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
311 Py_DECREF(ifdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
312 Py_DECREF(ofdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
313 Py_DECREF(efdlist);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
314 }
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
315
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
316 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
317 reap_obj(rfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
318 reap_obj(wfd2obj);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
319 reap_obj(efd2obj);
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
320 #ifdef SELECT_USES_HEAP
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
321 PyMem_DEL(rfd2obj);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
322 PyMem_DEL(wfd2obj);
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
323 PyMem_DEL(efd2obj);
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
324 #endif /* SELECT_USES_HEAP */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
325 return ret;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
326 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
327
31761
f4a4ac7331ec Added configure check for broken poll() on some unix systems (MacOS X 10.3)
Nicholas Bastin <nick.bastin@gmail.com>
parents: 30683
diff changeset
328 #if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
329 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
330 * poll() support
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
331 */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
332
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
333 typedef struct {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
334 PyObject_HEAD
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
335 PyObject *dict;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
336 int ufd_uptodate;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
337 int ufd_len;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
338 struct pollfd *ufds;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
339 } pollObject;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
340
24280
1598a1e473e2 staticforward bites the dust.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 23832
diff changeset
341 static PyTypeObject poll_Type;
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
342
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
343 /* Update the malloc'ed array of pollfds to match the dictionary
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
344 contained within a pollObject. Return 1 on success, 0 on an error.
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
345 */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
346
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
347 static int
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
348 update_ufd_array(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
349 {
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36324
diff changeset
350 Py_ssize_t i, pos;
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
351 PyObject *key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
352
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
353 self->ufd_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
354 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
355 if (self->ufds == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
356 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
357 return 0;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
360 i = pos = 0;
18754
3cd03a64c338 Make more warnings go away on the SGI compiler.
Fred Drake <fdrake@acm.org>
parents: 18603
diff changeset
361 while (PyDict_Next(self->dict, &pos, &key, &value)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
362 self->ufds[i].fd = PyInt_AsLong(key);
18754
3cd03a64c338 Make more warnings go away on the SGI compiler.
Fred Drake <fdrake@acm.org>
parents: 18603
diff changeset
363 self->ufds[i].events = (short)PyInt_AsLong(value);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
364 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
365 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
366 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
367 return 1;
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
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
370 PyDoc_STRVAR(poll_register_doc,
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
371 "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
372 Register a file descriptor with the polling object.\n\
19311
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide.
Barry Warsaw <barry@python.org>
parents: 19310
diff changeset
373 fd -- either an integer, or an object with a fileno() method returning an\n\
fc7617312182 Fixed a couple of minor formatting nits where lines were > 79 columns wide.
Barry Warsaw <barry@python.org>
parents: 19310
diff changeset
374 int.\n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
375 events -- an optional bitmask describing the type of events to check for");
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
376
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
377 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
378 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
379 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
380 PyObject *o, *key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
381 int fd, events = POLLIN | POLLPRI | POLLOUT;
20668
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
382 int err;
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
383
17873
1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects.
Fred Drake <fdrake@acm.org>
parents: 16946
diff changeset
384 if (!PyArg_ParseTuple(args, "O|i:register", &o, &events)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
385 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
386 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
387
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
388 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
389 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
390
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
391 /* 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
392 file descriptor, and the value is the event mask. */
20668
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
393 key = PyInt_FromLong(fd);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
394 if (key == NULL)
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
395 return NULL;
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
396 value = PyInt_FromLong(events);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
397 if (value == NULL) {
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
398 Py_DECREF(key);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
399 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
400 }
20668
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
401 err = PyDict_SetItem(self->dict, key, value);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
402 Py_DECREF(key);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
403 Py_DECREF(value);
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
404 if (err < 0)
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
405 return NULL;
3e9b85de447b Fix SF bug #474538: Memory (reference) leak in poller.register (Dave Brueck)
Guido van Rossum <guido@python.org>
parents: 20654
diff changeset
406
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
407 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
408
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
409 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
410 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
411 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
412
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
413 PyDoc_STRVAR(poll_unregister_doc,
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
414 "unregister(fd) -> None\n\n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
415 Remove a file descriptor being tracked by the polling object.");
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
416
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
417 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
418 poll_unregister(pollObject *self, PyObject *o)
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
419 {
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
420 PyObject *key;
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
421 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
422
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
423 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
424 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
425 return NULL;
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 /* 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
428 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
429 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
430 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
431
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
432 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
433 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
434 /* 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
435 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
436 return NULL;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
439 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
440 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
441
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
442 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
443 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
444 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
445
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
446 PyDoc_STRVAR(poll_poll_doc,
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
447 "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
448 Polls the set of registered file descriptors, returning a list containing \n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
449 any descriptors that have events or errors to report.");
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
450
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
451 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
452 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
453 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
454 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
455 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
456 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
457
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
458 if (!PyArg_UnpackTuple(args, "poll", 0, 1, &tout)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
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 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
463 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
464 timeout = -1;
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
465 else if (!PyNumber_Check(tout)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
466 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
467 "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
468 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
469 }
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
470 else {
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
471 tout = PyNumber_Int(tout);
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
472 if (!tout)
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
473 return NULL;
26153
6078abc69036 Use PyInt_AsLong instead of PyInt_AS_LONG after the call to
Walter Dörwald <walter@livinglogic.de>
parents: 25400
diff changeset
474 timeout = PyInt_AsLong(tout);
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
475 Py_DECREF(tout);
35834
418a61ead11b Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint
Neal Norwitz <nnorwitz@gmail.com>
parents: 33007
diff changeset
476 if (timeout == -1 && PyErr_Occurred())
418a61ead11b Bug #1346533, select.poll() doesn't raise an error if timeout > sys.maxint
Neal Norwitz <nnorwitz@gmail.com>
parents: 33007
diff changeset
477 return NULL;
24408
4de5c7e6231e SF patch #577031, remove PyArg_Parse() since it's deprecated
Neal Norwitz <nnorwitz@gmail.com>
parents: 24363
diff changeset
478 }
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
479
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
480 /* 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
481 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
482 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
483 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
484
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
485 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
486 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
487 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
488 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
489
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
490 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
491 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
492 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
493 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
494
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
495 /* build the result list */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
496
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
497 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
498 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
499 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
500 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
501 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
502 /* 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
503 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
504 i++;
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 /* 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
507 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
508 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
509 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
510 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
511 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
512 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
513 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
514 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
515 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
516 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
517 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
518
33007
9fb2e30f26be [Bug #923315] Produce correct result on AIX
Andrew M. Kuchling <amk@amk.ca>
parents: 31761
diff changeset
519 /* The &0xffff is a workaround for AIX. 'revents'
9fb2e30f26be [Bug #923315] Produce correct result on AIX
Andrew M. Kuchling <amk@amk.ca>
parents: 31761
diff changeset
520 is a 16-bit short, and IBM assigned POLLNVAL
9fb2e30f26be [Bug #923315] Produce correct result on AIX
Andrew M. Kuchling <amk@amk.ca>
parents: 31761
diff changeset
521 to be 0x8000, so the conversion to int results
9fb2e30f26be [Bug #923315] Produce correct result on AIX
Andrew M. Kuchling <amk@amk.ca>
parents: 31761
diff changeset
522 in a negative number. See SF bug #923315. */
9fb2e30f26be [Bug #923315] Produce correct result on AIX
Andrew M. Kuchling <amk@amk.ca>
parents: 31761
diff changeset
523 num = PyInt_FromLong(self->ufds[i].revents & 0xffff);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
524 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
525 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
526 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
527 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
528 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
529 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
530 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
531 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
532 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
533 i++;
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 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
536 return result_list;
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 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
539 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
540 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
541 }
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 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
544 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
545 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
546 {"unregister", (PyCFunction)poll_unregister,
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
547 METH_O, poll_unregister_doc},
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
548 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
549 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
550 {NULL, NULL} /* sentinel */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
551 };
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
552
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
553 static pollObject *
14277
984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>:
Fred Drake <fdrake@acm.org>
parents: 14182
diff changeset
554 newPollObject(void)
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
555 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
556 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
557 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
558 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
559 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
560 /* 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
561 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
562 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
563 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
564 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
565 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
566 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
567 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
568 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
569 return self;
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
572 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
573 poll_dealloc(pollObject *self)
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 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
576 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
577 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
578 PyObject_Del(self);
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
581 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
582 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
583 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
584 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
585 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
586
24283
c0a67a1cab09 Removed more stray instances of statichere, but left _sre.c alone.
Tim Peters <tim.peters@gmail.com>
parents: 24280
diff changeset
587 static PyTypeObject poll_Type = {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
588 /* 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
589 * 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
590 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
591 0, /*ob_size*/
21313
91dd223829c6 Patch supplied by Burton Radons for his own SF bug #487390: Modifying
Guido van Rossum <guido@python.org>
parents: 20668
diff changeset
592 "select.poll", /*tp_name*/
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
593 sizeof(pollObject), /*tp_basicsize*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
594 0, /*tp_itemsize*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
595 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
596 (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
597 0, /*tp_print*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
598 (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
599 0, /*tp_setattr*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
600 0, /*tp_compare*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
601 0, /*tp_repr*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
602 0, /*tp_as_number*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
603 0, /*tp_as_sequence*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
604 0, /*tp_as_mapping*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
605 0, /*tp_hash*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
606 };
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
607
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
608 PyDoc_STRVAR(poll_doc,
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
609 "Returns a polling object, which supports registering and\n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
610 unregistering file descriptors, and then polling them for I/O events.");
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
611
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
612 static PyObject *
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
613 select_poll(PyObject *self, PyObject *unused)
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
614 {
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
parents: 37935
diff changeset
615 return (PyObject *)newPollObject();
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
616 }
37935
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
617
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
618 #ifdef __APPLE__
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
619 /*
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
620 * On some systems poll() sets errno on invalid file descriptors. We test
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
621 * for this at runtime because this bug may be fixed or introduced between
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
622 * OS releases.
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
623 */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
624 static int select_have_broken_poll(void)
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
625 {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
626 int poll_test;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
627 int filedes[2];
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
628
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
629 struct pollfd poll_struct = { 0, POLLIN|POLLPRI|POLLOUT, 0 };
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
630
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
631 /* Create a file descriptor to make invalid */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
632 if (pipe(filedes) < 0) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
633 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
634 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
635 poll_struct.fd = filedes[0];
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
636 close(filedes[0]);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
637 close(filedes[1]);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
638 poll_test = poll(&poll_struct, 1, 0);
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
639 if (poll_test < 0) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
640 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
641 } else if (poll_test == 0 && poll_struct.revents != POLLNVAL) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
642 return 1;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
643 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
644 return 0;
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
645 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
646 #endif /* __APPLE__ */
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
647
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
648 #endif /* HAVE_POLL */
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
649
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
650 PyDoc_STRVAR(select_doc,
8570
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
651 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
652 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
653 Wait until one or more file descriptors are ready for some kind of I/O.\n\
30402
a430be683a7a select.select() now accepts a sequence (as defined by PySequence_Fast()) for
Brett Cannon <bcannon@gmail.com>
parents: 27815
diff changeset
654 The first three arguments are sequences of file descriptors to be waited for:\n\
8570
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
655 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
656 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
657 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
658 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
659 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
660 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
661 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
662 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
663 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
664 or None, the call will never time out.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
665 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
666 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>
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667 arguments; each contains the subset of the corresponding file descriptors\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
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668 that are ready.\n\
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Guido van Rossum <guido@python.org>
parents: 6626
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669 \n\
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Guido van Rossum <guido@python.org>
parents: 6626
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670 *** IMPORTANT NOTICE ***\n\
39043
c67b23397f30 Patch #1516912: improve Modules support for OpenVMS.
Neal Norwitz <nnorwitz@gmail.com>
parents: 38716
diff changeset
671 On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.");
8570
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Guido van Rossum <guido@python.org>
parents: 6626
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672
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
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673 static PyMethodDef select_methods[] = {
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Andrew M. Kuchling <amk@amk.ca>
parents: 13761
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674 {"select", select_select, METH_VARARGS, select_doc},
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675 #if defined(HAVE_POLL)
38489
3fe3ccdf0155 Make use of METH_O and METH_NOARGS where possible.
Georg Brandl <georg@python.org>
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676 {"poll", select_poll, METH_NOARGS, poll_doc},
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677 #endif /* HAVE_POLL */
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parents: 4621
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678 {0, 0}, /* sentinel */
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
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diff changeset
679 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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parents:
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680
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23607
diff changeset
681 PyDoc_STRVAR(module_doc,
8570
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Guido van Rossum <guido@python.org>
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682 "This module supports asynchronous I/O on multiple file descriptors.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
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683 \n\
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Guido van Rossum <guido@python.org>
parents: 6626
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684 *** IMPORTANT NOTICE ***\n\
39043
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Neal Norwitz <nnorwitz@gmail.com>
parents: 38716
diff changeset
685 On Windows and OpenVMS, only sockets are supported; on Unix, all file descriptors.");
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
686
24363
979ff5d0ae07 Replace DL_IMPORT with PyMODINIT_FUNC and remove "/export:init..." link
Mark Hammond <mhammond@skippinet.com.au>
parents: 24283
diff changeset
687 PyMODINIT_FUNC
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13593
diff changeset
688 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
689 {
22729
cdff3c7c1a76 Use the PyModule_Add*() APIs instead of manipulating the module dict
Fred Drake <fdrake@acm.org>
parents: 22114
diff changeset
690 PyObject *m;
8570
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parents: 6626
diff changeset
691 m = Py_InitModule3("select", select_methods, module_doc);
36324
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35834
diff changeset
692 if (m == NULL)
1af7f719ed28 Check return result from Py_InitModule*(). This API can fail.
Neal Norwitz <nnorwitz@gmail.com>
parents: 35834
diff changeset
693 return;
22729
cdff3c7c1a76 Use the PyModule_Add*() APIs instead of manipulating the module dict
Fred Drake <fdrake@acm.org>
parents: 22114
diff changeset
694
6367
2c29b8982643 Apply two changes, systematically:
Guido van Rossum <guido@python.org>
parents: 4734
diff changeset
695 SelectError = PyErr_NewException("select.error", NULL, NULL);
22729
cdff3c7c1a76 Use the PyModule_Add*() APIs instead of manipulating the module dict
Fred Drake <fdrake@acm.org>
parents: 22114
diff changeset
696 Py_INCREF(SelectError);
cdff3c7c1a76 Use the PyModule_Add*() APIs instead of manipulating the module dict
Fred Drake <fdrake@acm.org>
parents: 22114
diff changeset
697 PyModule_AddObject(m, "error", SelectError);
37935
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
698 #if defined(HAVE_POLL)
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
699
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
700 #ifdef __APPLE__
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
701 if (select_have_broken_poll()) {
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
702 if (PyObject_DelAttrString(m, "poll") == -1) {
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
703 PyErr_Clear();
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
704 }
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
705 } else {
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
706 #else
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
707 {
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
708 #endif
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
709 poll_Type.ob_type = &PyType_Type;
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
710 PyModule_AddIntConstant(m, "POLLIN", POLLIN);
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Ronald Oussoren <ronaldoussoren@mac.com>
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diff changeset
711 PyModule_AddIntConstant(m, "POLLPRI", POLLPRI);
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parents: 36501
diff changeset
712 PyModule_AddIntConstant(m, "POLLOUT", POLLOUT);
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
713 PyModule_AddIntConstant(m, "POLLERR", POLLERR);
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
714 PyModule_AddIntConstant(m, "POLLHUP", POLLHUP);
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
715 PyModule_AddIntConstant(m, "POLLNVAL", POLLNVAL);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
716
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
717 #ifdef POLLRDNORM
37935
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diff changeset
718 PyModule_AddIntConstant(m, "POLLRDNORM", POLLRDNORM);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
719 #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
720 #ifdef POLLRDBAND
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
721 PyModule_AddIntConstant(m, "POLLRDBAND", POLLRDBAND);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
722 #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
723 #ifdef POLLWRNORM
37935
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
724 PyModule_AddIntConstant(m, "POLLWRNORM", POLLWRNORM);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
725 #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
726 #ifdef POLLWRBAND
37935
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
727 PyModule_AddIntConstant(m, "POLLWRBAND", POLLWRBAND);
14918
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Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
728 #endif
14182
c85a80db6845 Not every OS that support poll seems to support POLLMSG.
Sjoerd Mullender <sjoerd@acm.org>
parents: 14174
diff changeset
729 #ifdef POLLMSG
37935
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
730 PyModule_AddIntConstant(m, "POLLMSG", POLLMSG);
14182
c85a80db6845 Not every OS that support poll seems to support POLLMSG.
Sjoerd Mullender <sjoerd@acm.org>
parents: 14174
diff changeset
731 #endif
37935
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Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
732 }
e3a8a8de355e Patch 1471761 - test for broken poll at runtime
Ronald Oussoren <ronaldoussoren@mac.com>
parents: 36501
diff changeset
733 #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
734 }