Mercurial > cpython-lru_cache-weakref

annotate Modules/selectmodule.c @ 20354:fdc1914406e2 legacy-trunk

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Updated, and added a very terse description of PyMac_SetConsoleHandler().
author Jack Jansen <jack.jansen@cwi.nl>
date Tue, 09 Oct 2001 23:14:06 +0000
parents b41638a11e4e
children edd9d0b3c47e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d617de15774b Yet another pass at fd2obj -- this time for Windows
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1 /* select - Module containing unix select(2) call.
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2 Under Unix, the file descriptors are small integers.
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3 Under Win32, select only exists for sockets, and sockets may
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4 have any value except INVALID_SOCKET.
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parents: 8616
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5 Under BeOS, we suffer the same dichotomy as Win32; sockets can be anything
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6 >= 0.
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7 */
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8
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9 #include "Python.h"
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10
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e11c12323ebf SF bug 110843: Low FD_SETSIZE limit on Win32 (PR#41). Boosted to 512.
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parents: 14918
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11 /* Windows #defines FD_SETSIZE to 64 if FD_SETSIZE isn't already defined.
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12 64 is too small (too many people have bumped into that limit).
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13 Here we boost it.
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14 Users who want even more than the boosted limit should #define
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diff changeset
15 FD_SETSIZE higher before this; e.g., via compiler /D switch.
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16 */
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17 #if defined(MS_WINDOWS) && !defined(FD_SETSIZE)
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18 #define FD_SETSIZE 512
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19 #endif
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20
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21 #ifdef HAVE_UNISTD_H
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22 #include <unistd.h>
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23 #endif
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24 #if defined(HAVE_POLL_H)
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25 #include <poll.h>
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26 #elif defined(HAVE_SYS_POLL_H)
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27 #include <sys/poll.h>
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28 #endif
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29
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30 #ifdef __sgi
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31 /* This is missing from unistd.h */
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32 extern void bzero(void *, int);
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33 #endif
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34
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35 #ifndef DONT_HAVE_SYS_TYPES_H
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36 #include <sys/types.h>
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37 #endif
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38
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39 #if defined(PYOS_OS2)
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40 #include <sys/time.h>
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41 #include <utils.h>
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42 #endif
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43
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44 #ifdef MS_WINDOWS
3675
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45 #include <winsock.h>
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46 #else
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47 #ifdef __BEOS__
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48 #include <net/socket.h>
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49 #define SOCKET int
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50 #else
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51 #define SOCKET int
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52 #endif
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53 #endif
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54
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55 #ifdef RISCOS
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56 #define NO_DUP
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57 #undef off_t
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58 #undef uid_t
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59 #undef gid_t
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60 #undef errno
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61 #include "socklib.h"
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62 #endif /* RISCOS */
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63
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64 static PyObject *SelectError;
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65
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66 /* list of Python objects and their file descriptor */
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67 typedef struct {
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68 PyObject *obj; /* owned reference */
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69 SOCKET fd;
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70 int sentinel; /* -1 == sentinel */
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71 } pylist;
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72
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73 static void
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74 reap_obj(pylist fd2obj[FD_SETSIZE + 1])
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75 {
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76 int i;
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77 for (i = 0; i < FD_SETSIZE + 1 && fd2obj[i].sentinel >= 0; i++) {
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78 Py_XDECREF(fd2obj[i].obj);
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79 fd2obj[i].obj = NULL;
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80 }
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81 fd2obj[0].sentinel = -1;
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82 }
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83
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84
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85 /* returns -1 and sets the Python exception if an error occurred, otherwise
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86 returns a number >= 0
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87 */
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88 static int
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parents: 19311
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89 list2set(PyObject *list, fd_set *set, pylist fd2obj[FD_SETSIZE + 1])
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a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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90 {
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91 int i;
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92 int max = -1;
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93 int index = 0;
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94 int len = PyList_Size(list);
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95 PyObject* o = NULL;
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96
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97 fd2obj[0].obj = (PyObject*)0; /* set list to zero size */
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98 FD_ZERO(set);
2611
01687ce43708 fix subtle refcnt bug
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99
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100 for (i = 0; i < len; i++) {
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101 SOCKET v;
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102
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103 /* any intervening fileno() calls could decr this refcnt */
4730
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104 if (!(o = PyList_GetItem(list, i)))
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3db423515626 list2set(): correct return value (an int, not a PyObject*).
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105 return -1;
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62cf7d589300 list2set(): PyList_GetItem could fail.
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106
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107 Py_INCREF(o);
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108 v = PyObject_AsFileDescriptor( o );
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109 if (v == -1) goto finally;
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110
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111 #if defined(_MSC_VER)
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112 max = 0; /* not used for Win32 */
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113 #else /* !_MSC_VER */
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114 if (v < 0 || v >= FD_SETSIZE) {
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115 PyErr_SetString(PyExc_ValueError,
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116 "filedescriptor out of range in select()");
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117 goto finally;
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118 }
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119 if (v > max)
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120 max = v;
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121 #endif /* _MSC_VER */
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122 FD_SET(v, set);
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123
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124 /* add object and its file descriptor to the list */
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125 if (index >= FD_SETSIZE) {
4700
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126 PyErr_SetString(PyExc_ValueError,
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127 "too many file descriptors in select()");
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128 goto finally;
4692
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129 }
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130 fd2obj[index].obj = o;
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131 fd2obj[index].fd = v;
4700
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132 fd2obj[index].sentinel = 0;
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133 fd2obj[++index].sentinel = -1;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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134 }
4692
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135 return max+1;
4700
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136
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parents: 4692
diff changeset
137 finally:
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
138 Py_XDECREF(o);
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
139 return -1;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
140 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
141
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
142 /* returns NULL and sets the Python exception if an error occurred */
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
143 static PyObject *
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
144 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
145 {
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
146 int i, j, count=0;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
147 PyObject *list, *o;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
148 SOCKET fd;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
149
4700
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diff changeset
150 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
151 if (FD_ISSET(fd2obj[j].fd, set))
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
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diff changeset
152 count++;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
153 }
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
154 list = PyList_New(count);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
155 if (!list)
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
156 return NULL;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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parents:
diff changeset
157
4700
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
158 i = 0;
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
159 for (j = 0; fd2obj[j].sentinel >= 0; j++) {
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
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diff changeset
160 fd = fd2obj[j].fd;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
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diff changeset
161 if (FD_ISSET(fd, set)) {
3675
d617de15774b Yet another pass at fd2obj -- this time for Windows
Guido van Rossum <guido@python.org>
parents: 2611
diff changeset
162 #ifndef _MSC_VER
4692
cb405b9696d4 Several changes... Guido *please* take a look!
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diff changeset
163 if (fd > FD_SETSIZE) {
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
164 PyErr_SetString(PyExc_SystemError,
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
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diff changeset
165 "filedescriptor out of range returned in select()");
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
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diff changeset
166 goto finally;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
167 }
3675
d617de15774b Yet another pass at fd2obj -- this time for Windows
Guido van Rossum <guido@python.org>
parents: 2611
diff changeset
168 #endif
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
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diff changeset
169 o = fd2obj[j].obj;
4700
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diff changeset
170 fd2obj[j].obj = NULL;
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diff changeset
171 /* transfer ownership */
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
172 if (PyList_SetItem(list, i, o) < 0)
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
173 goto finally;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
174
825038d98ab6 Reworked to eliminate all potential memory problems, including
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parents: 4692
diff changeset
175 i++;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
176 }
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
177 }
cb405b9696d4 Several changes... Guido *please* take a look!
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diff changeset
178 return list;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
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diff changeset
179 finally:
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
180 Py_DECREF(list);
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
181 return NULL;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
182 }
4700
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Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
183
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
184 #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
185 #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
186 #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
187 #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
188
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
189 static PyObject *
13502
7348cceee8fa ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
190 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
191 {
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
192 #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
193 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
194 #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
195 /* 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
196 * - 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
197 * - add one
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
198 * - 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
199 * 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
200 */
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
201 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
202 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
203 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
204 #endif /* SELECT_USES_HEAP */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
205 PyObject *ifdlist, *ofdlist, *efdlist;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
206 PyObject *ret = NULL;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
207 PyObject *tout = Py_None;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
208 fd_set ifdset, ofdset, efdset;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
209 double timeout;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
210 struct timeval tv, *tvp;
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
211 long seconds;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
212 int imax, omax, emax, max;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
213 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
214
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
215 /* convert arguments */
11882
dc65c5f6ad7c Massive patch by Skip Montanaro to add ":name" to as many
Guido van Rossum <guido@python.org>
parents: 11656
diff changeset
216 if (!PyArg_ParseTuple(args, "OOO|O:select",
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
217 &ifdlist, &ofdlist, &efdlist, &tout))
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
218 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
219
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
220 if (tout == Py_None)
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
221 tvp = (struct timeval *)0;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
222 else if (!PyArg_Parse(tout, "d", &timeout)) {
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
223 PyErr_SetString(PyExc_TypeError,
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
224 "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
225 return NULL;
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
226 }
1390
cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same
Guido van Rossum <guido@python.org>
parents: 1284
diff changeset
227 else {
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
228 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
229 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
230 "timeout period too long");
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
231 return NULL;
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
232 }
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
233 seconds = (long)timeout;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
234 timeout = timeout - (double)seconds;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
235 tv.tv_sec = seconds;
13079
185003d09e76 Trent Mick:
Guido van Rossum <guido@python.org>
parents: 12576
diff changeset
236 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
237 tvp = &tv;
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
238 }
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
239
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
240 /* sanity check first three arguments */
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
241 if (!PyList_Check(ifdlist) ||
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
242 !PyList_Check(ofdlist) ||
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
243 !PyList_Check(efdlist))
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
244 {
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
245 PyErr_SetString(PyExc_TypeError,
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
246 "arguments 1-3 must be lists");
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
247 return NULL;
1390
cffe8d6b2f09 * selectmodule.c (select_select): timeout argument may be None with same
Guido van Rossum <guido@python.org>
parents: 1284
diff changeset
248 }
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
249
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
250 #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
251 /* 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
252 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
253 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
254 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
255 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
256 if (rfd2obj) PyMem_DEL(rfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 11882
diff changeset
257 if (wfd2obj) PyMem_DEL(wfd2obj);
1c7c2dd1beb1 Vladimir Marangozov's long-awaited malloc restructuring.
Guido van Rossum <guido@python.org>
parents: 11882
diff changeset
258 if (efd2obj) PyMem_DEL(efd2obj);
8616
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
259 return NULL;
2417f17fa3e5 On Windows, put the select file descriptor arrays on the heap.
Guido van Rossum <guido@python.org>
parents: 8570
diff changeset
260 }
19310
6cb9f538dce4 select_select(): Closing bug #448351 the easy way, i.e. by changing
Barry Warsaw <barry@python.org>
parents: 18754
diff changeset
261 #endif /* SELECT_USES_HEAP */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
262 /* Convert lists to fd_sets, and get maximum fd number
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
263 * propagates the Python exception set in list2set()
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
264 */
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
265 rfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
266 wfd2obj[0].sentinel = -1;
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
267 efd2obj[0].sentinel = -1;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
268 if ((imax=list2set(ifdlist, &ifdset, rfd2obj)) < 0)
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
269 goto finally;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
270 if ((omax=list2set(ofdlist, &ofdset, wfd2obj)) < 0)
4700
825038d98ab6 Reworked to eliminate all potential memory problems, including
Barry Warsaw <barry@python.org>
parents: 4692
diff changeset
271 goto finally;
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
272 if ((emax=list2set(efdlist, &efdset, efd2obj)) < 0)
4700
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273 goto finally;
4692
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diff changeset
274 max = imax;
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diff changeset
275 if (omax > max) max = omax;
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diff changeset
276 if (emax > max) max = emax;
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diff changeset
277
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diff changeset
278 Py_BEGIN_ALLOW_THREADS
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diff changeset
279 n = select(max, &ifdset, &ofdset, &efdset, tvp);
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280 Py_END_ALLOW_THREADS
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281
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diff changeset
282 if (n < 0) {
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diff changeset
283 PyErr_SetFromErrno(SelectError);
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284 }
4700
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285 else if (n == 0) {
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286 /* optimization */
4692
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287 ifdlist = PyList_New(0);
4700
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diff changeset
288 if (ifdlist) {
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289 ret = Py_BuildValue("OOO", ifdlist, ifdlist, ifdlist);
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290 Py_DECREF(ifdlist);
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291 }
4692
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292 }
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293 else {
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294 /* any of these three calls can raise an exception. it's more
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diff changeset
295 convenient to test for this after all three calls... but
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296 is that acceptable?
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diff changeset
297 */
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298 ifdlist = set2list(&ifdset, rfd2obj);
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299 ofdlist = set2list(&ofdset, wfd2obj);
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300 efdlist = set2list(&efdset, efd2obj);
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diff changeset
301 if (PyErr_Occurred())
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302 ret = NULL;
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diff changeset
303 else
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304 ret = Py_BuildValue("OOO", ifdlist, ofdlist, efdlist);
902
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305
4700
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306 Py_DECREF(ifdlist);
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307 Py_DECREF(ofdlist);
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diff changeset
308 Py_DECREF(efdlist);
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309 }
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310
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diff changeset
311 finally:
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312 reap_obj(rfd2obj);
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diff changeset
313 reap_obj(wfd2obj);
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diff changeset
314 reap_obj(efd2obj);
19310
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diff changeset
315 #ifdef SELECT_USES_HEAP
8616
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diff changeset
316 PyMem_DEL(rfd2obj);
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diff changeset
317 PyMem_DEL(wfd2obj);
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diff changeset
318 PyMem_DEL(efd2obj);
19310
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diff changeset
319 #endif /* SELECT_USES_HEAP */
4692
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diff changeset
320 return ret;
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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parents:
diff changeset
321 }
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
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diff changeset
322
14174
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323 #ifdef HAVE_POLL
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324 /*
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325 * poll() support
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326 */
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327
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diff changeset
328 typedef struct {
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diff changeset
329 PyObject_HEAD
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diff changeset
330 PyObject *dict;
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diff changeset
331 int ufd_uptodate;
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diff changeset
332 int ufd_len;
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diff changeset
333 struct pollfd *ufds;
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diff changeset
334 } pollObject;
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diff changeset
335
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
336 staticforward PyTypeObject poll_Type;
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diff changeset
337
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
338 /* Update the malloc'ed array of pollfds to match the dictionary
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
339 contained within a pollObject. Return 1 on success, 0 on an error.
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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340 */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
341
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
342 static int
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diff changeset
343 update_ufd_array(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
344 {
18754
3cd03a64c338 Make more warnings go away on the SGI compiler.
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diff changeset
345 int i, pos;
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
346 PyObject *key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
347
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
348 self->ufd_len = PyDict_Size(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
349 PyMem_Resize(self->ufds, struct pollfd, self->ufd_len);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
350 if (self->ufds == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
351 PyErr_NoMemory();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
352 return 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
353 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
354
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
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diff changeset
355 i = pos = 0;
18754
3cd03a64c338 Make more warnings go away on the SGI compiler.
Fred Drake <fdrake@acm.org>
parents: 18603
diff changeset
356 while (PyDict_Next(self->dict, &pos, &key, &value)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
357 self->ufds[i].fd = PyInt_AsLong(key);
18754
3cd03a64c338 Make more warnings go away on the SGI compiler.
Fred Drake <fdrake@acm.org>
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diff changeset
358 self->ufds[i].events = (short)PyInt_AsLong(value);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
359 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
360 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
361 self->ufd_uptodate = 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
362 return 1;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
363 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
364
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
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diff changeset
365 static char poll_register_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
366 "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
367 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
368 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
369 int.\n\
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
370 events -- an optional bitmask describing the type of events to check for";
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diff changeset
371
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
372 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
373 poll_register(pollObject *self, PyObject *args)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
374 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
375 PyObject *o, *key, *value;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
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diff changeset
376 int fd, events = POLLIN | POLLPRI | POLLOUT;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
377
17873
1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects.
Fred Drake <fdrake@acm.org>
parents: 16946
diff changeset
378 if (!PyArg_ParseTuple(args, "O|i:register", &o, &events)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
379 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
380 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
381
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
382 fd = PyObject_AsFileDescriptor(o);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
383 if (fd == -1) return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
384
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
385 /* 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>
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diff changeset
386 file descriptor, and the value is the event mask. */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
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diff changeset
387 if ( (NULL == (key = PyInt_FromLong(fd))) ||
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
388 (NULL == (value = PyInt_FromLong(events))) ||
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
389 (PyDict_SetItem(self->dict, key, value)) == -1) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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parents: 13761
diff changeset
390 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
391 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
392 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
393
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
394 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
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diff changeset
395 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
396 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
397
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
398 static char poll_unregister_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
399 "unregister(fd) -> None\n\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
400 Remove a file descriptor being tracked by the polling object.";
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
401
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
402 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
403 poll_unregister(pollObject *self, PyObject *args)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
404 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
405 PyObject *o, *key;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
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diff changeset
406 int fd;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
407
17873
1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects.
Fred Drake <fdrake@acm.org>
parents: 16946
diff changeset
408 if (!PyArg_ParseTuple(args, "O:unregister", &o)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
409 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
410 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
411
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
412 fd = PyObject_AsFileDescriptor( o );
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
413 if (fd == -1)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
414 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
415
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
416 /* 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
417 key = PyInt_FromLong(fd);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
418 if (key == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
419 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
420
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
421 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
422 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
423 /* 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
424 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
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
428 Py_DECREF(key);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
429 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
430
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
431 Py_INCREF(Py_None);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
432 return Py_None;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
433 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
434
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
435 static char poll_poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
436 "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
437 Polls the set of registered file descriptors, returning a list containing \n\
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
438 any descriptors that have events or errors to report.";
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
439
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
440 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
441 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
442 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
443 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
444 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
445 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
446
17873
1eb12259feea Add :method info to the PyArg_ParseTuple() format strings for poll objects.
Fred Drake <fdrake@acm.org>
parents: 16946
diff changeset
447 if (!PyArg_ParseTuple(args, "|O:poll", &tout)) {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
448 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
449 }
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 /* Check values for timeout */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
452 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
453 timeout = -1;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
454 else if (!PyArg_Parse(tout, "i", &timeout)) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
455 PyErr_SetString(PyExc_TypeError,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
456 "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
457 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
458 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
459
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
460 /* 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
461 if (!self->ufd_uptodate)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
462 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
463 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
464
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
465 /* call poll() */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
466 Py_BEGIN_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
467 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
468 Py_END_ALLOW_THREADS;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
469
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
470 if (poll_result < 0) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
471 PyErr_SetFromErrno(SelectError);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
472 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
473 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
474
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
475 /* build the result list */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
476
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
477 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
478 if (!result_list)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
479 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
480 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
481 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
482 /* 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
483 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
484 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
485 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
486 /* 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
487 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
488 clean up result_list */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
489 value = PyTuple_New(2);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
490 if (value == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
491 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
492 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
493 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
494 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
495 goto error;
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 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
498
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
499 num = PyInt_FromLong(self->ufds[i].revents);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
500 if (num == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
501 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
502 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
503 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
504 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
505 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
506 Py_DECREF(value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
507 goto error;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
508 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
509 i++;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
510 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
511 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
512 return result_list;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
513
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
514 error:
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
515 Py_DECREF(result_list);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
516 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
517 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
518
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
519 static PyMethodDef poll_methods[] = {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
520 {"register", (PyCFunction)poll_register,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
521 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
522 {"unregister", (PyCFunction)poll_unregister,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
523 METH_VARARGS, poll_unregister_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
524 {"poll", (PyCFunction)poll_poll,
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
525 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
526 {NULL, NULL} /* sentinel */
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
529 static pollObject *
14277
984abd20eec2 Peter Schneider-Kamp <nowonder@nowonder.de>:
Fred Drake <fdrake@acm.org>
parents: 14182
diff changeset
530 newPollObject(void)
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
531 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
532 pollObject *self;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
533 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
534 if (self == NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
535 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
536 /* 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
537 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
538 self->ufd_uptodate = 0;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
539 self->ufds = NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
540 self->dict = PyDict_New();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
541 if (self->dict == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
542 Py_DECREF(self);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
543 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
544 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
545 return self;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
546 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
547
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
548 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
549 poll_dealloc(pollObject *self)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
550 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
551 if (self->ufds != NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
552 PyMem_DEL(self->ufds);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
553 Py_XDECREF(self->dict);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
554 PyObject_Del(self);
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
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
557 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
558 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
559 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
560 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
561 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
562
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
563 statichere PyTypeObject poll_Type = {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
564 /* 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
565 * 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
566 PyObject_HEAD_INIT(NULL)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
567 0, /*ob_size*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
568 "poll", /*tp_name*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
569 sizeof(pollObject), /*tp_basicsize*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
570 0, /*tp_itemsize*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
571 /* methods */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
572 (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
573 0, /*tp_print*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
574 (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
575 0, /*tp_setattr*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
576 0, /*tp_compare*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
577 0, /*tp_repr*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
578 0, /*tp_as_number*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
579 0, /*tp_as_sequence*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
580 0, /*tp_as_mapping*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
581 0, /*tp_hash*/
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
582 };
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
583
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
584 static char poll_doc[] =
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
585 "Returns a polling object, which supports registering and\n\
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
586 unregistering file descriptors, and then polling them for I/O events.";
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
587
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
588 static PyObject *
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
589 select_poll(PyObject *self, PyObject *args)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
590 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
591 pollObject *rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
592
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
593 if (!PyArg_ParseTuple(args, ":poll"))
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
594 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
595 rv = newPollObject();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
596 if ( rv == NULL )
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
597 return NULL;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
598 return (PyObject *)rv;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
599 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
600 #endif /* HAVE_POLL */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
601
8570
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
602 static char select_doc[] =
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
603 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
604 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
605 Wait until one or more file descriptors are ready for some kind of I/O.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
606 The first three arguments are lists of file descriptors to be waited for:\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
607 rlist -- wait until ready for reading\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
608 wlist -- wait until ready for writing\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
609 xlist -- wait for an ``exceptional condition''\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
610 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
611 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
612 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
613 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
614 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
615 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
616 or None, the call will never time out.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
617 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
618 The return value is a tuple of three lists corresponding to the first three\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
619 arguments; each contains the subset of the corresponding file descriptors\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
620 that are ready.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
621 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
622 *** IMPORTANT NOTICE ***\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
623 On Windows, only sockets are supported; on Unix, all file descriptors.";
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
624
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
625 static PyMethodDef select_methods[] = {
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
626 {"select", select_select, METH_VARARGS, select_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
627 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
628 {"poll", select_poll, METH_VARARGS, poll_doc},
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
629 #endif /* HAVE_POLL */
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
630 {0, 0}, /* sentinel */
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
631 };
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
632
8570
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
633 static char module_doc[] =
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
634 "This module supports asynchronous I/O on multiple file descriptors.\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
635 \n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
636 *** IMPORTANT NOTICE ***\n\
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
637 On Windows, only sockets are supported; on Unix, all file descriptors.";
902
a4793ae26682 Changes for new UNIX-specific built-in module 'select' and new header for
Guido van Rossum <guido@python.org>
parents:
diff changeset
638
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
639 /*
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
640 * Convenience routine to export an integer value.
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
641 * For simplicity, errors (which are unlikely anyway) are ignored.
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
642 */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
643
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
644 static void
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
645 insint(PyObject *d, char *name, int value)
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
646 {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
647 PyObject *v = PyInt_FromLong((long) value);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
648 if (v == NULL) {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
649 /* Don't bother reporting this error */
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
650 PyErr_Clear();
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
651 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
652 else {
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
653 PyDict_SetItemString(d, name, v);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
654 Py_DECREF(v);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
655 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
656 }
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
657
9588
38023a425e48 Add DL_EXPORT() to all modules that could possibly be used
Guido van Rossum <guido@python.org>
parents: 8823
diff changeset
658 DL_EXPORT(void)
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13593
diff changeset
659 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
660 {
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
661 PyObject *m, *d;
8570
bd695de18ecf Added doc strings.
Guido van Rossum <guido@python.org>
parents: 6626
diff changeset
662 m = Py_InitModule3("select", select_methods, module_doc);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
663 d = PyModule_GetDict(m);
6367
2c29b8982643 Apply two changes, systematically:
Guido van Rossum <guido@python.org>
parents: 4734
diff changeset
664 SelectError = PyErr_NewException("select.error", NULL, NULL);
4692
cb405b9696d4 Several changes... Guido *please* take a look!
Barry Warsaw <barry@python.org>
parents: 4621
diff changeset
665 PyDict_SetItemString(d, "error", SelectError);
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
666 #ifdef HAVE_POLL
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
667 poll_Type.ob_type = &PyType_Type;
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
668 insint(d, "POLLIN", POLLIN);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
669 insint(d, "POLLPRI", POLLPRI);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
670 insint(d, "POLLOUT", POLLOUT);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
671 insint(d, "POLLERR", POLLERR);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
672 insint(d, "POLLHUP", POLLHUP);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
673 insint(d, "POLLNVAL", POLLNVAL);
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
674
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
675 #ifdef POLLRDNORM
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
676 insint(d, "POLLRDNORM", POLLRDNORM);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
677 #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
678 #ifdef POLLRDBAND
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
679 insint(d, "POLLRDBAND", POLLRDBAND);
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914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
680 #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
681 #ifdef POLLWRNORM
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
682 insint(d, "POLLWRNORM", POLLWRNORM);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
683 #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
684 #ifdef POLLWRBAND
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
685 insint(d, "POLLWRBAND", POLLWRBAND);
14918
914ae7f9c64c Add #ifdef's for platforms that don't have the constants POLLRDNORM and
Andrew M. Kuchling <amk@amk.ca>
parents: 14869
diff changeset
686 #endif
14182
c85a80db6845 Not every OS that support poll seems to support POLLMSG.
Sjoerd Mullender <sjoerd@acm.org>
parents: 14174
diff changeset
687 #ifdef POLLMSG
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
688 insint(d, "POLLMSG", POLLMSG);
14182
c85a80db6845 Not every OS that support poll seems to support POLLMSG.
Sjoerd Mullender <sjoerd@acm.org>
parents: 14174
diff changeset
689 #endif
14174
35b7989ba20c Add interface to poll() system call (SF patch #100852)
Andrew M. Kuchling <amk@amk.ca>
parents: 13761
diff changeset
690 #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
691 }