annotate Modules/_threadmodule.c @ 56992:bf93e4df7bfb

Merged revisions 75969 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r75969 | antoine.pitrou | 2009-10-30 23:19:09 +0100 (ven., 30 oct. 2009) | 5 lines Remove official documentation entry for thread._count() and make the docstring more descriptive instead. ........
author Antoine Pitrou <solipsis@pitrou.net>
date Fri, 30 Oct 2009 22:23:02 +0000
parents 6cf84e5a6dd7
children 6d91aaadddd0
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1
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2 /* Thread module */
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3 /* Interface to Sjoerd's portable C thread library */
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4
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5 #include "Python.h"
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6 #include "structmember.h" /* offsetof */
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7
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8 #ifndef WITH_THREAD
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9 #error "Error! The rest of Python is not compiled with thread support."
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10 #error "Rerun configure, adding a --with-threads option."
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11 #error "Then run `make clean' followed by `make'."
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12 #endif
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13
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14 #include "pythread.h"
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16 static PyObject *ThreadError;
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17 static long nb_threads = 0;
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19 /* Lock objects */
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20
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21 typedef struct {
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22 PyObject_HEAD
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23 PyThread_type_lock lock_lock;
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24 PyObject *in_weakreflist;
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25 } lockobject;
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27 static void
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28 lock_dealloc(lockobject *self)
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29 {
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30 assert(self->lock_lock);
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31 if (self->in_weakreflist != NULL)
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32 PyObject_ClearWeakRefs((PyObject *) self);
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33 /* Unlock the lock so it's safe to free it */
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34 PyThread_acquire_lock(self->lock_lock, 0);
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35 PyThread_release_lock(self->lock_lock);
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37 PyThread_free_lock(self->lock_lock);
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38 PyObject_Del(self);
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39 }
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41 static PyObject *
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42 lock_PyThread_acquire_lock(lockobject *self, PyObject *args)
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43 {
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44 int i = 1;
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46 if (!PyArg_ParseTuple(args, "|i:acquire", &i))
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47 return NULL;
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49 Py_BEGIN_ALLOW_THREADS
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50 i = PyThread_acquire_lock(self->lock_lock, i);
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51 Py_END_ALLOW_THREADS
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52
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53 return PyBool_FromLong((long)i);
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54 }
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55
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56 PyDoc_STRVAR(acquire_doc,
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57 "acquire([wait]) -> None or bool\n\
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58 (acquire_lock() is an obsolete synonym)\n\
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59 \n\
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60 Lock the lock. Without argument, this blocks if the lock is already\n\
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61 locked (even by the same thread), waiting for another thread to release\n\
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62 the lock, and return None once the lock is acquired.\n\
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63 With an argument, this will only block if the argument is true,\n\
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64 and the return value reflects whether the lock is acquired.\n\
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65 The blocking operation is not interruptible.");
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66
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67 static PyObject *
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68 lock_PyThread_release_lock(lockobject *self)
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69 {
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70 /* Sanity check: the lock must be locked */
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71 if (PyThread_acquire_lock(self->lock_lock, 0)) {
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72 PyThread_release_lock(self->lock_lock);
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73 PyErr_SetString(ThreadError, "release unlocked lock");
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74 return NULL;
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75 }
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77 PyThread_release_lock(self->lock_lock);
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78 Py_INCREF(Py_None);
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79 return Py_None;
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80 }
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81
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82 PyDoc_STRVAR(release_doc,
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83 "release()\n\
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84 (release_lock() is an obsolete synonym)\n\
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85 \n\
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86 Release the lock, allowing another thread that is blocked waiting for\n\
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87 the lock to acquire the lock. The lock must be in the locked state,\n\
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88 but it needn't be locked by the same thread that unlocks it.");
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89
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90 static PyObject *
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91 lock_locked_lock(lockobject *self)
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92 {
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93 if (PyThread_acquire_lock(self->lock_lock, 0)) {
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94 PyThread_release_lock(self->lock_lock);
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95 return PyBool_FromLong(0L);
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96 }
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97 return PyBool_FromLong(1L);
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98 }
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99
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100 PyDoc_STRVAR(locked_doc,
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101 "locked() -> bool\n\
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102 (locked_lock() is an obsolete synonym)\n\
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103 \n\
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104 Return whether the lock is in the locked state.");
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105
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106 static PyMethodDef lock_methods[] = {
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107 {"acquire_lock", (PyCFunction)lock_PyThread_acquire_lock,
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108 METH_VARARGS, acquire_doc},
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109 {"acquire", (PyCFunction)lock_PyThread_acquire_lock,
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110 METH_VARARGS, acquire_doc},
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111 {"release_lock", (PyCFunction)lock_PyThread_release_lock,
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112 METH_NOARGS, release_doc},
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113 {"release", (PyCFunction)lock_PyThread_release_lock,
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114 METH_NOARGS, release_doc},
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115 {"locked_lock", (PyCFunction)lock_locked_lock,
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116 METH_NOARGS, locked_doc},
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117 {"locked", (PyCFunction)lock_locked_lock,
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118 METH_NOARGS, locked_doc},
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119 {"__enter__", (PyCFunction)lock_PyThread_acquire_lock,
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120 METH_VARARGS, acquire_doc},
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121 {"__exit__", (PyCFunction)lock_PyThread_release_lock,
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122 METH_VARARGS, release_doc},
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123 {NULL, NULL} /* sentinel */
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124 };
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125
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126 static PyTypeObject Locktype = {
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127 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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128 "_thread.lock", /*tp_name*/
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129 sizeof(lockobject), /*tp_size*/
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130 0, /*tp_itemsize*/
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131 /* methods */
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132 (destructor)lock_dealloc, /*tp_dealloc*/
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133 0, /*tp_print*/
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Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
134 0, /*tp_getattr*/
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1418
diff changeset
135 0, /*tp_setattr*/
51271
87fbbf22adf3 Merged revisions 69214 via svnmerge from
Mark Dickinson <dickinsm@gmail.com>
parents: 48413
diff changeset
136 0, /*tp_reserved*/
1746
1940892d2fe3 Merge alpha100 branch back to main trunk
Guido van Rossum <guido@python.org>
parents: 1418
diff changeset
137 0, /*tp_repr*/
48413
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
138 0, /*tp_as_number*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
139 0, /*tp_as_sequence*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
140 0, /*tp_as_mapping*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
141 0, /*tp_hash*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
142 0, /*tp_call*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
143 0, /*tp_str*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
144 0, /*tp_getattro*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
145 0, /*tp_setattro*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
146 0, /*tp_as_buffer*/
56428
5458c20aa0cf rollback the merge of r74524 because it causes failures in test_multiprocessing
Benjamin Peterson <benjamin@python.org>
parents: 56376
diff changeset
147 Py_TPFLAGS_DEFAULT, /*tp_flags*/
48413
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
148 0, /*tp_doc*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
149 0, /*tp_traverse*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
150 0, /*tp_clear*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
151 0, /*tp_richcompare*/
56440
29908f2bc93f Merged revisions 74524 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 56428
diff changeset
152 offsetof(lockobject, in_weakreflist), /*tp_weaklistoffset*/
48413
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parents: 48388
diff changeset
153 0, /*tp_iter*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
154 0, /*tp_iternext*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
155 lock_methods, /*tp_methods*/
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
156 };
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
157
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
158 static lockobject *
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Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
159 newlockobject(void)
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Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
160 {
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Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
161 lockobject *self;
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Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
162 self = PyObject_New(lockobject, &Locktype);
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parents: 36926
diff changeset
163 if (self == NULL)
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Thomas Wouters <thomas@python.org>
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164 return NULL;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
165 self->lock_lock = PyThread_allocate_lock();
56440
29908f2bc93f Merged revisions 74524 via svnmerge from
Benjamin Peterson <benjamin@python.org>
parents: 56428
diff changeset
166 self->in_weakreflist = NULL;
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
167 if (self->lock_lock == NULL) {
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
168 PyObject_Del(self);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
169 self = NULL;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
170 PyErr_SetString(ThreadError, "can't allocate lock");
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
171 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
172 return self;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
173 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
174
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
175 /* Thread-local objects */
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
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diff changeset
176
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
177 #include "structmember.h"
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
178
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
179 typedef struct {
35086
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Michael W. Hudson <mwh@python.net>
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diff changeset
180 PyObject_HEAD
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Michael W. Hudson <mwh@python.net>
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diff changeset
181 PyObject *key;
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Michael W. Hudson <mwh@python.net>
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182 PyObject *args;
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Michael W. Hudson <mwh@python.net>
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183 PyObject *kw;
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Michael W. Hudson <mwh@python.net>
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184 PyObject *dict;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
185 } localobject;
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
186
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
187 static PyObject *
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
188 local_new(PyTypeObject *type, PyObject *args, PyObject *kw)
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
189 {
35086
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Michael W. Hudson <mwh@python.net>
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190 localobject *self;
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
191 PyObject *tdict;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
192
35086
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Michael W. Hudson <mwh@python.net>
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diff changeset
193 if (type->tp_init == PyBaseObject_Type.tp_init
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Michael W. Hudson <mwh@python.net>
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194 && ((args && PyObject_IsTrue(args))
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Michael W. Hudson <mwh@python.net>
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diff changeset
195 || (kw && PyObject_IsTrue(kw)))) {
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
196 PyErr_SetString(PyExc_TypeError,
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
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diff changeset
197 "Initialization arguments are not supported");
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Michael W. Hudson <mwh@python.net>
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198 return NULL;
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parents: 35085
diff changeset
199 }
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
200
35086
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diff changeset
201 self = (localobject *)type->tp_alloc(type, 0);
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
202 if (self == NULL)
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
203 return NULL;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
204
35086
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diff changeset
205 Py_XINCREF(args);
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
206 self->args = args;
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
207 Py_XINCREF(kw);
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
208 self->kw = kw;
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Michael W. Hudson <mwh@python.net>
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diff changeset
209 self->dict = NULL; /* making sure */
42122
6710f453cf4a Make "thread.local" key a unicode object.
Walter Dörwald <walter@livinglogic.de>
parents: 40450
diff changeset
210 self->key = PyUnicode_FromFormat("thread.local.%p", self);
35086
c6b7fadf0ada Consistently use hard tabs for indentation.
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parents: 35085
diff changeset
211 if (self->key == NULL)
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
212 goto err;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
213
35086
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diff changeset
214 self->dict = PyDict_New();
c6b7fadf0ada Consistently use hard tabs for indentation.
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parents: 35085
diff changeset
215 if (self->dict == NULL)
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
216 goto err;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
217
35086
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diff changeset
218 tdict = PyThreadState_GetDict();
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
219 if (tdict == NULL) {
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
220 PyErr_SetString(PyExc_SystemError,
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
221 "Couldn't get thread-state dictionary");
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
222 goto err;
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parents: 35085
diff changeset
223 }
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
224
35086
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diff changeset
225 if (PyDict_SetItem(tdict, self->key, self->dict) < 0)
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
226 goto err;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
227
35086
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diff changeset
228 return (PyObject *)self;
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diff changeset
229
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diff changeset
230 err:
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diff changeset
231 Py_DECREF(self);
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diff changeset
232 return NULL;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
233 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
234
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
235 static int
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
236 local_traverse(localobject *self, visitproc visit, void *arg)
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
237 {
35086
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diff changeset
238 Py_VISIT(self->args);
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diff changeset
239 Py_VISIT(self->kw);
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
240 Py_VISIT(self->dict);
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
241 return 0;
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
242 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
243
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
244 static int
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
245 local_clear(localobject *self)
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
246 {
35086
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diff changeset
247 Py_CLEAR(self->args);
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parents: 35085
diff changeset
248 Py_CLEAR(self->kw);
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
249 Py_CLEAR(self->dict);
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Michael W. Hudson <mwh@python.net>
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diff changeset
250 return 0;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
251 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
252
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
253 static void
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
254 local_dealloc(localobject *self)
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
255 {
35086
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diff changeset
256 PyThreadState *tstate;
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
257 if (self->key
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diff changeset
258 && (tstate = PyThreadState_Get())
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
259 && tstate->interp) {
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
260 for(tstate = PyInterpreterState_ThreadHead(tstate->interp);
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
261 tstate;
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
262 tstate = PyThreadState_Next(tstate))
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
263 if (tstate->dict &&
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
264 PyDict_GetItem(tstate->dict, self->key))
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Michael W. Hudson <mwh@python.net>
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diff changeset
265 PyDict_DelItem(tstate->dict, self->key);
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
266 }
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
267
56277
74b18a267cd7 Merged revisions 75125 via svnmerge from
Philip Jenvey <pjenvey@underboss.org>
parents: 51271
diff changeset
268 Py_XDECREF(self->key);
35086
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Michael W. Hudson <mwh@python.net>
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diff changeset
269 local_clear(self);
44351
86a2679dca46 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
Christian Heimes <christian@cheimes.de>
parents: 44099
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270 Py_TYPE(self)->tp_free((PyObject*)self);
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271 }
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272
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273 static PyObject *
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274 _ldict(localobject *self)
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275 {
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276 PyObject *tdict, *ldict;
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277
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278 tdict = PyThreadState_GetDict();
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279 if (tdict == NULL) {
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280 PyErr_SetString(PyExc_SystemError,
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281 "Couldn't get thread-state dictionary");
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282 return NULL;
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283 }
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284
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285 ldict = PyDict_GetItem(tdict, self->key);
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286 if (ldict == NULL) {
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287 ldict = PyDict_New(); /* we own ldict */
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288
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289 if (ldict == NULL)
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290 return NULL;
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291 else {
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292 int i = PyDict_SetItem(tdict, self->key, ldict);
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293 Py_DECREF(ldict); /* now ldict is borrowed */
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294 if (i < 0)
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295 return NULL;
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296 }
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297
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298 Py_CLEAR(self->dict);
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299 Py_INCREF(ldict);
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300 self->dict = ldict; /* still borrowed */
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301
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302 if (Py_TYPE(self)->tp_init != PyBaseObject_Type.tp_init &&
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303 Py_TYPE(self)->tp_init((PyObject*)self,
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304 self->args, self->kw) < 0) {
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305 /* we need to get rid of ldict from thread so
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306 we create a new one the next time we do an attr
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307 acces */
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308 PyDict_DelItem(tdict, self->key);
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309 return NULL;
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310 }
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311
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312 }
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313
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314 /* The call to tp_init above may have caused another thread to run.
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315 Install our ldict again. */
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316 if (self->dict != ldict) {
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317 Py_CLEAR(self->dict);
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318 Py_INCREF(ldict);
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319 self->dict = ldict;
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320 }
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321
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322 return ldict;
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323 }
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324
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325 static int
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326 local_setattro(localobject *self, PyObject *name, PyObject *v)
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327 {
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328 PyObject *ldict;
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329
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330 ldict = _ldict(self);
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331 if (ldict == NULL)
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332 return -1;
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333
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334 return PyObject_GenericSetAttr((PyObject *)self, name, v);
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335 }
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336
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337 static PyObject *
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338 local_getdict(localobject *self, void *closure)
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339 {
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340 if (self->dict == NULL) {
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341 PyErr_SetString(PyExc_AttributeError, "__dict__");
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342 return NULL;
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343 }
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344
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345 Py_INCREF(self->dict);
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346 return self->dict;
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347 }
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348
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349 static PyGetSetDef local_getset[] = {
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350 {"__dict__", (getter)local_getdict, (setter)NULL,
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351 "Local-data dictionary", NULL},
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352 {NULL} /* Sentinel */
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353 };
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354
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355 static PyObject *local_getattro(localobject *, PyObject *);
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356
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357 static PyTypeObject localtype = {
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358 PyVarObject_HEAD_INIT(NULL, 0)
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359 /* tp_name */ "_thread._local",
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360 /* tp_basicsize */ sizeof(localobject),
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361 /* tp_itemsize */ 0,
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362 /* tp_dealloc */ (destructor)local_dealloc,
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363 /* tp_print */ 0,
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364 /* tp_getattr */ 0,
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365 /* tp_setattr */ 0,
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366 /* tp_reserved */ 0,
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367 /* tp_repr */ 0,
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368 /* tp_as_number */ 0,
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369 /* tp_as_sequence */ 0,
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370 /* tp_as_mapping */ 0,
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371 /* tp_hash */ 0,
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372 /* tp_call */ 0,
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373 /* tp_str */ 0,
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374 /* tp_getattro */ (getattrofunc)local_getattro,
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375 /* tp_setattro */ (setattrofunc)local_setattro,
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376 /* tp_as_buffer */ 0,
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377 /* tp_flags */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
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378 /* tp_doc */ "Thread-local data",
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379 /* tp_traverse */ (traverseproc)local_traverse,
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380 /* tp_clear */ (inquiry)local_clear,
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381 /* tp_richcompare */ 0,
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382 /* tp_weaklistoffset */ 0,
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383 /* tp_iter */ 0,
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384 /* tp_iternext */ 0,
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385 /* tp_methods */ 0,
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386 /* tp_members */ 0,
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387 /* tp_getset */ local_getset,
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388 /* tp_base */ 0,
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389 /* tp_dict */ 0, /* internal use */
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390 /* tp_descr_get */ 0,
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391 /* tp_descr_set */ 0,
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392 /* tp_dictoffset */ offsetof(localobject, dict),
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393 /* tp_init */ 0,
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394 /* tp_alloc */ 0,
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395 /* tp_new */ local_new,
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396 /* tp_free */ 0, /* Low-level free-mem routine */
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397 /* tp_is_gc */ 0, /* For PyObject_IS_GC */
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398 };
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399
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400 static PyObject *
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401 local_getattro(localobject *self, PyObject *name)
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402 {
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403 PyObject *ldict, *value;
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404
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
405 ldict = _ldict(self);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
406 if (ldict == NULL)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
407 return NULL;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
408
44351
86a2679dca46 #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
Christian Heimes <christian@cheimes.de>
parents: 44099
diff changeset
409 if (Py_TYPE(self) != &localtype)
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
410 /* use generic lookup for subtypes */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
411 return PyObject_GenericGetAttr((PyObject *)self, name);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
412
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
413 /* Optimization: just look in dict ourselves */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
414 value = PyDict_GetItem(ldict, name);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
415 if (value == NULL)
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
416 /* Fall back on generic to get __class__ and __dict__ */
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
417 return PyObject_GenericGetAttr((PyObject *)self, name);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
418
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
419 Py_INCREF(value);
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
420 return value;
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
diff changeset
421 }
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
422
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
423 /* Module functions */
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
424
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
425 struct bootstate {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
426 PyInterpreterState *interp;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
427 PyObject *func;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
428 PyObject *args;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
429 PyObject *keyw;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
430 };
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
431
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
432 static void
13497
95454b73ea91 ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
433 t_bootstrap(void *boot_raw)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
434 {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
435 struct bootstate *boot = (struct bootstate *) boot_raw;
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
436 PyThreadState *tstate;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
437 PyObject *res;
961
a31e07847063 New thread.c from Sjoerd, supports _exit_prog(). Use this in goaway()
Guido van Rossum <guido@python.org>
parents: 926
diff changeset
438
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
439 tstate = PyThreadState_New(boot->interp);
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
440
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
441 PyEval_AcquireThread(tstate);
56981
6cf84e5a6dd7 Merged revisions 75958 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 56440
diff changeset
442 nb_threads++;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
443 res = PyEval_CallObjectWithKeywords(
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
444 boot->func, boot->args, boot->keyw);
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
445 if (res == NULL) {
8433
7cdff8aa8318 t_bootstrap(): Use PyErr_ExceptionMatches(...) instead of PyErr_Occurred(...).
Fred Drake <fdrake@acm.org>
parents: 7211
diff changeset
446 if (PyErr_ExceptionMatches(PyExc_SystemExit))
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
447 PyErr_Clear();
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
448 else {
28889
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
449 PyObject *file;
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
450 PySys_WriteStderr(
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
451 "Unhandled exception in thread started by ");
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
452 file = PySys_GetObject("stderr");
43855
ee081609cee8 Added some additional checks for sys.std?? is None, see #1440
Christian Heimes <christian@cheimes.de>
parents: 42334
diff changeset
453 if (file != NULL && file != Py_None)
28889
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
454 PyFile_WriteObject(boot->func, file, 0);
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
455 else
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
456 PyObject_Print(boot->func, stderr, 0);
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
457 PySys_WriteStderr("\n");
7211
c764217ae6eb Don't store the exception info from an unhandled exception in a thread
Guido van Rossum <guido@python.org>
parents: 6367
diff changeset
458 PyErr_PrintEx(0);
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
459 }
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
460 }
2055
cf31eab6ab5a Another bulky set of minor changes.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
461 else
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
462 Py_DECREF(res);
28889
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
463 Py_DECREF(boot->func);
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
464 Py_DECREF(boot->args);
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
465 Py_XDECREF(boot->keyw);
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
466 PyMem_DEL(boot_raw);
56981
6cf84e5a6dd7 Merged revisions 75958 via svnmerge from
Antoine Pitrou <solipsis@pitrou.net>
parents: 56440
diff changeset
467 nb_threads--;
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
468 PyThreadState_Clear(tstate);
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
469 PyThreadState_DeleteCurrent();
8823
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth.
Guido van Rossum <guido@python.org>
parents: 8567
diff changeset
470 PyThread_exit_thread();
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
471 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
472
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
473 static PyObject *
13497
95454b73ea91 ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
474 thread_PyThread_start_new_thread(PyObject *self, PyObject *fargs)
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
475 {
14363
5da406ebef55 The second argument to start_new_thread() is not a tuple, as pointed
Guido van Rossum <guido@python.org>
parents: 13820
diff changeset
476 PyObject *func, *args, *keyw = NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
477 struct bootstate *boot;
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
478 long ident;
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
479
38669
19fd6141940d Partially merge trunk into p3yk. The removal of Mac/Tools is confusing svn
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
480 if (!PyArg_UnpackTuple(fargs, "start_new_thread", 2, 3,
19fd6141940d Partially merge trunk into p3yk. The removal of Mac/Tools is confusing svn
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
481 &func, &args, &keyw))
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
482 return NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
483 if (!PyCallable_Check(func)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
484 PyErr_SetString(PyExc_TypeError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
485 "first arg must be callable");
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
486 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
487 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
488 if (!PyTuple_Check(args)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
489 PyErr_SetString(PyExc_TypeError,
14363
5da406ebef55 The second argument to start_new_thread() is not a tuple, as pointed
Guido van Rossum <guido@python.org>
parents: 13820
diff changeset
490 "2nd arg must be a tuple");
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
491 return NULL;
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
492 }
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
493 if (keyw != NULL && !PyDict_Check(keyw)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
494 PyErr_SetString(PyExc_TypeError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
495 "optional 3rd arg must be a dictionary");
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
496 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
497 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
498 boot = PyMem_NEW(struct bootstate, 1);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
499 if (boot == NULL)
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
500 return PyErr_NoMemory();
31797
846b3ee7e106 Changed random calls to PyThreadState_Get() to use the macro
Nicholas Bastin <nick.bastin@gmail.com>
parents: 29498
diff changeset
501 boot->interp = PyThreadState_GET()->interp;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
502 boot->func = func;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
503 boot->args = args;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
504 boot->keyw = keyw;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
505 Py_INCREF(func);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
506 Py_INCREF(args);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
507 Py_XINCREF(keyw);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
508 PyEval_InitThreads(); /* Start the interpreter's thread-awareness */
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
509 ident = PyThread_start_new_thread(t_bootstrap, (void*) boot);
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
510 if (ident == -1) {
34619
0dd146fed9dd The error message "can't start new thread" should not end in a
Guido van Rossum <guido@python.org>
parents: 33254
diff changeset
511 PyErr_SetString(ThreadError, "can't start new thread");
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
512 Py_DECREF(func);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
513 Py_DECREF(args);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
514 Py_XDECREF(keyw);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
515 PyMem_DEL(boot);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
516 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
517 }
44099
f324631462a2 Cleanup: Replaced most PyInt_ aliases with PyLong_ and disabled the aliases in intobject.h
Christian Heimes <christian@cheimes.de>
parents: 43855
diff changeset
518 return PyLong_FromLong(ident);
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
519 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
520
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
521 PyDoc_STRVAR(start_new_doc,
20266
241ef8a923c7 Fix typo in docstring
Andrew M. Kuchling <amk@amk.ca>
parents: 16140
diff changeset
522 "start_new_thread(function, args[, kwargs])\n\
8562
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
523 (start_new() is an obsolete synonym)\n\
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
524 \n\
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
525 Start a new thread and return its identifier. The thread will call the\n\
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
526 function with positional arguments from the tuple args and keyword arguments\n\
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
527 taken from the optional dictionary kwargs. The thread exits when the\n\
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
528 function returns; the return value is ignored. The thread will also exit\n\
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
529 when the function raises an unhandled exception; a stack trace will be\n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
530 printed unless the exception is SystemExit.\n");
8562
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
531
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
532 static PyObject *
22561
043ad7adc896 Remove many uses of PyArg_NoArgs macro, change METH_OLDARGS to METH_NOARGS.
Neal Norwitz <nnorwitz@gmail.com>
parents: 21313
diff changeset
533 thread_PyThread_exit_thread(PyObject *self)
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
534 {
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
535 PyErr_SetNone(PyExc_SystemExit);
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
536 return NULL;
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
537 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
538
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
539 PyDoc_STRVAR(exit_doc,
8562
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
540 "exit()\n\
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
parents: 9588
diff changeset
541 (PyThread_exit_thread() is an obsolete synonym)\n\
8562
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
542 \n\
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
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543 This is synonymous to ``raise SystemExit''. It will cause the current\n\
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544 thread to exit silently unless the exception is caught.");
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545
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546 static PyObject *
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547 thread_PyThread_interrupt_main(PyObject * self)
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548 {
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549 PyErr_SetInterrupt();
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550 Py_INCREF(Py_None);
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551 return Py_None;
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552 }
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553
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554 PyDoc_STRVAR(interrupt_doc,
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555 "interrupt_main()\n\
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556 \n\
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557 Raise a KeyboardInterrupt in the main thread.\n\
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558 A subthread can use this function to interrupt the main thread."
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559 );
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560
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561 #ifndef NO_EXIT_PROG
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562 static PyObject *
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563 thread_PyThread_exit_prog(PyObject *self, PyObject *args)
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564 {
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565 int sts;
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566 if (!PyArg_ParseTuple(args, "i:exit_prog", &sts))
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567 return NULL;
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568 Py_Exit(sts); /* Calls PyThread_exit_prog(sts) or _PyThread_exit_prog(sts) */
923
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569 for (;;) { } /* Should not be reached */
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570 }
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571 #endif
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572
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573 static lockobject *newlockobject(void);
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574
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575 static PyObject *
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576 thread_PyThread_allocate_lock(PyObject *self)
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577 {
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578 return (PyObject *) newlockobject();
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579 }
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580
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581 PyDoc_STRVAR(allocate_doc,
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582 "allocate_lock() -> lock object\n\
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583 (allocate() is an obsolete synonym)\n\
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584 \n\
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585 Create a new lock object. See LockType.__doc__ for information about locks.");
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586
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diff changeset
587 static PyObject *
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588 thread_get_ident(PyObject *self)
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589 {
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590 long ident;
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591 ident = PyThread_get_thread_ident();
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592 if (ident == -1) {
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593 PyErr_SetString(ThreadError, "no current thread ident");
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594 return NULL;
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595 }
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596 return PyLong_FromLong(ident);
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597 }
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598
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diff changeset
599 PyDoc_STRVAR(get_ident_doc,
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600 "get_ident() -> integer\n\
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601 \n\
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602 Return a non-zero integer that uniquely identifies the current thread\n\
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diff changeset
603 amongst other threads that exist simultaneously.\n\
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604 This may be used to identify per-thread resources.\n\
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diff changeset
605 Even though on some platforms threads identities may appear to be\n\
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diff changeset
606 allocated consecutive numbers starting at 1, this behavior should not\n\
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diff changeset
607 be relied upon, and the number should be seen purely as a magic cookie.\n\
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diff changeset
608 A thread's identity may be reused for another thread after it exits.");
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diff changeset
609
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610 static PyObject *
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611 thread__count(PyObject *self)
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612 {
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613 return PyLong_FromLong(nb_threads);
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614 }
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615
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616 PyDoc_STRVAR(_count_doc,
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617 "_count() -> integer\n\
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618 \n\
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619 \
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620 Return the number of currently running Python threads, excluding \n\
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diff changeset
621 the main thread. The returned number comprises all threads created\n\
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622 through `start_new_thread()` as well as `threading.Thread`, and not\n\
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diff changeset
623 yet finished.\n\
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624 \n\
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625 This function is meant for internal and specialized purposes only.\n\
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626 In most applications `threading.enumerate()` should be used instead.");
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627
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628 static PyObject *
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629 thread_stack_size(PyObject *self, PyObject *args)
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630 {
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631 size_t old_size;
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632 Py_ssize_t new_size = 0;
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633 int rc;
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634
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635 if (!PyArg_ParseTuple(args, "|n:stack_size", &new_size))
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636 return NULL;
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637
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638 if (new_size < 0) {
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639 PyErr_SetString(PyExc_ValueError,
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diff changeset
640 "size must be 0 or a positive value");
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641 return NULL;
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642 }
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643
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644 old_size = PyThread_get_stacksize();
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645
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646 rc = PyThread_set_stacksize((size_t) new_size);
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647 if (rc == -1) {
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648 PyErr_Format(PyExc_ValueError,
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649 "size not valid: %zd bytes",
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650 new_size);
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651 return NULL;
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652 }
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653 if (rc == -2) {
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654 PyErr_SetString(ThreadError,
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655 "setting stack size not supported");
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656 return NULL;
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657 }
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658
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659 return PyLong_FromSsize_t((Py_ssize_t) old_size);
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660 }
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661
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662 PyDoc_STRVAR(stack_size_doc,
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663 "stack_size([size]) -> size\n\
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664 \n\
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665 Return the thread stack size used when creating new threads. The\n\
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666 optional size argument specifies the stack size (in bytes) to be used\n\
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667 for subsequently created threads, and must be 0 (use platform or\n\
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668 configured default) or a positive integer value of at least 32,768 (32k).\n\
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669 If changing the thread stack size is unsupported, a ThreadError\n\
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670 exception is raised. If the specified size is invalid, a ValueError\n\
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671 exception is raised, and the stack size is unmodified. 32k bytes\n\
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672 currently the minimum supported stack size value to guarantee\n\
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673 sufficient stack space for the interpreter itself.\n\
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674 \n\
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675 Note that some platforms may have particular restrictions on values for\n\
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676 the stack size, such as requiring a minimum stack size larger than 32kB or\n\
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677 requiring allocation in multiples of the system memory page size\n\
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678 - platform documentation should be referred to for more information\n\
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679 (4kB pages are common; using multiples of 4096 for the stack size is\n\
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diff changeset
680 the suggested approach in the absence of more specific information).");
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681
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682 static PyMethodDef thread_methods[] = {
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Andrew M. Kuchling <amk@amk.ca>
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diff changeset
683 {"start_new_thread", (PyCFunction)thread_PyThread_start_new_thread,
3c0f75a2198f Use METH_VARARGS instead of numeric constant 1 in method def. tables
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684 METH_VARARGS,
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diff changeset
685 start_new_doc},
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686 {"start_new", (PyCFunction)thread_PyThread_start_new_thread,
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687 METH_VARARGS,
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688 start_new_doc},
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689 {"allocate_lock", (PyCFunction)thread_PyThread_allocate_lock,
22561
043ad7adc896 Remove many uses of PyArg_NoArgs macro, change METH_OLDARGS to METH_NOARGS.
Neal Norwitz <nnorwitz@gmail.com>
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diff changeset
690 METH_NOARGS, allocate_doc},
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691 {"allocate", (PyCFunction)thread_PyThread_allocate_lock,
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diff changeset
692 METH_NOARGS, allocate_doc},
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693 {"exit_thread", (PyCFunction)thread_PyThread_exit_thread,
22561
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Neal Norwitz <nnorwitz@gmail.com>
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diff changeset
694 METH_NOARGS, exit_doc},
13820
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diff changeset
695 {"exit", (PyCFunction)thread_PyThread_exit_thread,
22584
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diff changeset
696 METH_NOARGS, exit_doc},
29498
1402f265e48f Correct function name.
Kurt B. Kaiser <kbk@shore.net>
parents: 29444
diff changeset
697 {"interrupt_main", (PyCFunction)thread_PyThread_interrupt_main,
29444
8d160095eb66 Add interrupt_main() to thread module.
Kurt B. Kaiser <kbk@shore.net>
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diff changeset
698 METH_NOARGS, interrupt_doc},
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699 {"get_ident", (PyCFunction)thread_get_ident,
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diff changeset
700 METH_NOARGS, get_ident_doc},
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701 {"_count", (PyCFunction)thread__count,
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702 METH_NOARGS, _count_doc},
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703 {"stack_size", (PyCFunction)thread_stack_size,
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704 METH_VARARGS,
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705 stack_size_doc},
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706 #ifndef NO_EXIT_PROG
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707 {"exit_prog", (PyCFunction)thread_PyThread_exit_prog,
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708 METH_VARARGS},
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709 #endif
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710 {NULL, NULL} /* sentinel */
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711 };
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712
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713
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714 /* Initialization function */
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715
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716 PyDoc_STRVAR(thread_doc,
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diff changeset
717 "This module provides primitive operations to write multi-threaded programs.\n\
23832
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718 The 'threading' module provides a more convenient interface.");
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diff changeset
719
23832
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diff changeset
720 PyDoc_STRVAR(lock_doc,
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diff changeset
721 "A lock object is a synchronization primitive. To create a lock,\n\
9679
877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
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722 call the PyThread_allocate_lock() function. Methods are:\n\
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723 \n\
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724 acquire() -- lock the lock, possibly blocking until it can be obtained\n\
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725 release() -- unlock of the lock\n\
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726 locked() -- test whether the lock is currently locked\n\
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diff changeset
727 \n\
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728 A lock is not owned by the thread that locked it; another thread may\n\
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729 unlock it. A thread attempting to lock a lock that it has already locked\n\
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Martin v. Löwis <martin@v.loewis.de>
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diff changeset
730 will block until another thread unlocks it. Deadlocks may ensue.");
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731
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diff changeset
732 static struct PyModuleDef threadmodule = {
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
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733 PyModuleDef_HEAD_INIT,
94f64f11fdd0 Implement PEP 3121: new module initialization and finalization API.
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734 "_thread",
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735 thread_doc,
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736 -1,
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737 thread_methods,
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738 NULL,
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diff changeset
739 NULL,
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740 NULL,
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741 NULL
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742 };
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743
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744
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f66b3a3509c7 Excise DL_EXPORT/DL_IMPORT from Modules/*. Required adding a prototype
Mark Hammond <mhammond@skippinet.com.au>
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745 PyMODINIT_FUNC
47580
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746 PyInit__thread(void)
923
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747 {
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748 PyObject *m, *d;
35086
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Michael W. Hudson <mwh@python.net>
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diff changeset
749
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
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750 /* Initialize types: */
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751 if (PyType_Ready(&localtype) < 0)
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752 return NULL;
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753 if (PyType_Ready(&Locktype) < 0)
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754 return NULL;
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755
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756 /* Create the module and add the functions */
47580
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757 m = PyModule_Create(&threadmodule);
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Neal Norwitz <nnorwitz@gmail.com>
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758 if (m == NULL)
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759 return NULL;
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760
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761 /* Add a symbolic constant */
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diff changeset
762 d = PyModule_GetDict(m);
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Georg Brandl <georg@python.org>
parents: 44351
diff changeset
763 ThreadError = PyErr_NewException("_thread.error", NULL, NULL);
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764 PyDict_SetItemString(d, "error", ThreadError);
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765 Locktype.tp_doc = lock_doc;
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766 Py_INCREF(&Locktype);
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767 PyDict_SetItemString(d, "LockType", (PyObject *)&Locktype);
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768
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parents: 34998
diff changeset
769 Py_INCREF(&localtype);
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diff changeset
770 if (PyModule_AddObject(m, "_local", (PyObject *)&localtype) < 0)
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771 return NULL;
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
772
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773 nb_threads = 0;
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774
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775 /* Initialize the C thread library */
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Guido van Rossum <guido@python.org>
parents: 9588
diff changeset
776 PyThread_init_thread();
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777 return m;
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778 }