annotate Modules/_threadmodule.c @ 51271:87fbbf22adf3 3.0

Merged revisions 69214 via svnmerge from svn+ssh://pythondev@svn.python.org/python/branches/py3k ........ r69214 | mark.dickinson | 2009-02-02 20:36:42 +0000 (Mon, 02 Feb 2009) | 4 lines Issue #1717: rename tp_compare to tp_reserved. I'll change the type of tp_compare in a separate commit, for ease of reversion should things go wrong. ........
author Mark Dickinson <dickinsm@gmail.com>
date Mon, 02 Feb 2009 20:41:29 +0000
parents 7e56016a6565
children 74b18a267cd7
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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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7 #ifndef WITH_THREAD
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8 #error "Error! The rest of Python is not compiled with thread support."
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9 #error "Rerun configure, adding a --with-threads option."
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10 #error "Then run `make clean' followed by `make'."
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11 #endif
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12
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13 #include "pythread.h"
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14
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15 static PyObject *ThreadError;
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18 /* Lock objects */
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19
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20 typedef struct {
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21 PyObject_HEAD
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22 PyThread_type_lock lock_lock;
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23 } lockobject;
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24
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25 static void
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26 lock_dealloc(lockobject *self)
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27 {
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28 assert(self->lock_lock);
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29 /* Unlock the lock so it's safe to free it */
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30 PyThread_acquire_lock(self->lock_lock, 0);
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31 PyThread_release_lock(self->lock_lock);
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32
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33 PyThread_free_lock(self->lock_lock);
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34 PyObject_Del(self);
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35 }
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37 static PyObject *
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38 lock_PyThread_acquire_lock(lockobject *self, PyObject *args)
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39 {
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40 int i = 1;
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41
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42 if (!PyArg_ParseTuple(args, "|i:acquire", &i))
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43 return NULL;
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44
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45 Py_BEGIN_ALLOW_THREADS
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46 i = PyThread_acquire_lock(self->lock_lock, i);
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47 Py_END_ALLOW_THREADS
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48
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49 return PyBool_FromLong((long)i);
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50 }
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51
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52 PyDoc_STRVAR(acquire_doc,
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53 "acquire([wait]) -> None or bool\n\
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54 (acquire_lock() is an obsolete synonym)\n\
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55 \n\
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56 Lock the lock. Without argument, this blocks if the lock is already\n\
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57 locked (even by the same thread), waiting for another thread to release\n\
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58 the lock, and return None once the lock is acquired.\n\
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59 With an argument, this will only block if the argument is true,\n\
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60 and the return value reflects whether the lock is acquired.\n\
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61 The blocking operation is not interruptible.");
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62
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63 static PyObject *
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64 lock_PyThread_release_lock(lockobject *self)
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65 {
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66 /* Sanity check: the lock must be locked */
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67 if (PyThread_acquire_lock(self->lock_lock, 0)) {
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68 PyThread_release_lock(self->lock_lock);
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69 PyErr_SetString(ThreadError, "release unlocked lock");
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70 return NULL;
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71 }
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72
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73 PyThread_release_lock(self->lock_lock);
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74 Py_INCREF(Py_None);
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75 return Py_None;
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76 }
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77
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78 PyDoc_STRVAR(release_doc,
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79 "release()\n\
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80 (release_lock() is an obsolete synonym)\n\
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81 \n\
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82 Release the lock, allowing another thread that is blocked waiting for\n\
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83 the lock to acquire the lock. The lock must be in the locked state,\n\
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84 but it needn't be locked by the same thread that unlocks it.");
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85
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86 static PyObject *
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87 lock_locked_lock(lockobject *self)
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88 {
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89 if (PyThread_acquire_lock(self->lock_lock, 0)) {
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90 PyThread_release_lock(self->lock_lock);
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91 return PyBool_FromLong(0L);
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92 }
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93 return PyBool_FromLong(1L);
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94 }
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95
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96 PyDoc_STRVAR(locked_doc,
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97 "locked() -> bool\n\
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98 (locked_lock() is an obsolete synonym)\n\
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99 \n\
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100 Return whether the lock is in the locked state.");
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101
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102 static PyMethodDef lock_methods[] = {
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103 {"acquire_lock", (PyCFunction)lock_PyThread_acquire_lock,
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104 METH_VARARGS, acquire_doc},
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105 {"acquire", (PyCFunction)lock_PyThread_acquire_lock,
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106 METH_VARARGS, acquire_doc},
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107 {"release_lock", (PyCFunction)lock_PyThread_release_lock,
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108 METH_NOARGS, release_doc},
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109 {"release", (PyCFunction)lock_PyThread_release_lock,
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110 METH_NOARGS, release_doc},
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111 {"locked_lock", (PyCFunction)lock_locked_lock,
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112 METH_NOARGS, locked_doc},
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113 {"locked", (PyCFunction)lock_locked_lock,
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114 METH_NOARGS, locked_doc},
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115 {"__enter__", (PyCFunction)lock_PyThread_acquire_lock,
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116 METH_VARARGS, acquire_doc},
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117 {"__exit__", (PyCFunction)lock_PyThread_release_lock,
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118 METH_VARARGS, release_doc},
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119 {NULL, NULL} /* sentinel */
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120 };
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121
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122 static PyTypeObject Locktype = {
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123 PyVarObject_HEAD_INIT(&PyType_Type, 0)
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124 "_thread.lock", /*tp_name*/
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125 sizeof(lockobject), /*tp_size*/
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126 0, /*tp_itemsize*/
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127 /* methods */
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128 (destructor)lock_dealloc, /*tp_dealloc*/
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129 0, /*tp_print*/
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130 0, /*tp_getattr*/
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131 0, /*tp_setattr*/
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132 0, /*tp_reserved*/
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133 0, /*tp_repr*/
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parents: 48388
diff changeset
134 0, /*tp_as_number*/
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Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
135 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
136 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
137 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
138 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
139 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
140 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
141 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
142 0, /*tp_as_buffer*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
143 Py_TPFLAGS_DEFAULT, /*tp_flags*/
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_doc*/
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_traverse*/
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_clear*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
147 0, /*tp_richcompare*/
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_weaklistoffset*/
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Amaury Forgeot d'Arc <amauryfa@gmail.com>
parents: 48388
diff changeset
149 0, /*tp_iter*/
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parents: 48388
diff changeset
150 0, /*tp_iternext*/
7e56016a6565 #3247 Get rid of Py_FindMethod; use tp_members instead.
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parents: 48388
diff changeset
151 lock_methods, /*tp_methods*/
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
152 };
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
153
37879
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
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154 static lockobject *
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parents: 36926
diff changeset
155 newlockobject(void)
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diff changeset
156 {
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157 lockobject *self;
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158 self = PyObject_New(lockobject, &Locktype);
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159 if (self == NULL)
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160 return NULL;
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diff changeset
161 self->lock_lock = PyThread_allocate_lock();
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parents: 36926
diff changeset
162 if (self->lock_lock == NULL) {
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diff changeset
163 PyObject_Del(self);
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164 self = NULL;
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165 PyErr_SetString(ThreadError, "can't allocate lock");
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
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166 }
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167 return self;
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parents: 36926
diff changeset
168 }
f731859e9b3b Merge p3yk branch with the trunk up to revision 45595. This breaks a fair
Thomas Wouters <thomas@python.org>
parents: 36926
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169
32673
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Jim Fulton <jim@zope.com>
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170 /* Thread-local objects */
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171
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
172 #include "structmember.h"
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173
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
174 typedef struct {
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175 PyObject_HEAD
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176 PyObject *key;
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177 PyObject *args;
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178 PyObject *kw;
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179 PyObject *dict;
32673
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Jim Fulton <jim@zope.com>
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diff changeset
180 } localobject;
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diff changeset
181
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
182 static PyObject *
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diff changeset
183 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
184 {
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185 localobject *self;
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186 PyObject *tdict;
32673
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Jim Fulton <jim@zope.com>
parents: 31797
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187
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188 if (type->tp_init == PyBaseObject_Type.tp_init
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189 && ((args && PyObject_IsTrue(args))
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190 || (kw && PyObject_IsTrue(kw)))) {
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diff changeset
191 PyErr_SetString(PyExc_TypeError,
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diff changeset
192 "Initialization arguments are not supported");
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193 return NULL;
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parents: 35085
diff changeset
194 }
32673
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
195
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diff changeset
196 self = (localobject *)type->tp_alloc(type, 0);
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diff changeset
197 if (self == NULL)
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diff changeset
198 return NULL;
32673
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
199
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diff changeset
200 Py_XINCREF(args);
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Michael W. Hudson <mwh@python.net>
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diff changeset
201 self->args = args;
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diff changeset
202 Py_XINCREF(kw);
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Michael W. Hudson <mwh@python.net>
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diff changeset
203 self->kw = kw;
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diff changeset
204 self->dict = NULL; /* making sure */
42122
6710f453cf4a Make "thread.local" key a unicode object.
Walter Dörwald <walter@livinglogic.de>
parents: 40450
diff changeset
205 self->key = PyUnicode_FromFormat("thread.local.%p", self);
35086
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diff changeset
206 if (self->key == NULL)
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parents: 35085
diff changeset
207 goto err;
32673
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
208
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diff changeset
209 self->dict = PyDict_New();
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diff changeset
210 if (self->dict == NULL)
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parents: 35085
diff changeset
211 goto err;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
212
35086
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diff changeset
213 tdict = PyThreadState_GetDict();
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diff changeset
214 if (tdict == NULL) {
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
215 PyErr_SetString(PyExc_SystemError,
c6b7fadf0ada Consistently use hard tabs for indentation.
Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
216 "Couldn't get thread-state dictionary");
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
217 goto err;
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diff changeset
218 }
32673
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
219
35086
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220 if (PyDict_SetItem(tdict, self->key, self->dict) < 0)
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
221 goto err;
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
222
35086
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diff changeset
223 return (PyObject *)self;
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diff changeset
224
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diff changeset
225 err:
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diff changeset
226 Py_DECREF(self);
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diff changeset
227 return NULL;
32673
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Jim Fulton <jim@zope.com>
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diff changeset
228 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
229
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
230 static int
97768d87394a Implemented thread-local data as proposed on python-dev:
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diff changeset
231 local_traverse(localobject *self, visitproc visit, void *arg)
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
232 {
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diff changeset
233 Py_VISIT(self->args);
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diff changeset
234 Py_VISIT(self->kw);
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diff changeset
235 Py_VISIT(self->dict);
32673
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diff changeset
236 return 0;
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
237 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
238
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
239 static int
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
240 local_clear(localobject *self)
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parents: 31797
diff changeset
241 {
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diff changeset
242 Py_CLEAR(self->key);
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diff changeset
243 Py_CLEAR(self->args);
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parents: 35085
diff changeset
244 Py_CLEAR(self->kw);
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diff changeset
245 Py_CLEAR(self->dict);
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diff changeset
246 return 0;
32673
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Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
247 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
248
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
249 static void
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
250 local_dealloc(localobject *self)
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diff changeset
251 {
35086
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diff changeset
252 PyThreadState *tstate;
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diff changeset
253 if (self->key
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parents: 35085
diff changeset
254 && (tstate = PyThreadState_Get())
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
255 && tstate->interp) {
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Michael W. Hudson <mwh@python.net>
parents: 35085
diff changeset
256 for(tstate = PyInterpreterState_ThreadHead(tstate->interp);
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diff changeset
257 tstate;
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diff changeset
258 tstate = PyThreadState_Next(tstate))
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parents: 35085
diff changeset
259 if (tstate->dict &&
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diff changeset
260 PyDict_GetItem(tstate->dict, self->key))
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diff changeset
261 PyDict_DelItem(tstate->dict, self->key);
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parents: 35085
diff changeset
262 }
32673
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diff changeset
263
35086
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diff changeset
264 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
diff changeset
265 Py_TYPE(self)->tp_free((PyObject*)self);
32673
97768d87394a Implemented thread-local data as proposed on python-dev:
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diff changeset
266 }
97768d87394a Implemented thread-local data as proposed on python-dev:
Jim Fulton <jim@zope.com>
parents: 31797
diff changeset
267
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
diff changeset
268 static PyObject *
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diff changeset
269 _ldict(localobject *self)
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diff changeset
270 {
97768d87394a Implemented thread-local data as proposed on python-dev:
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parents: 31797
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271 PyObject *tdict, *ldict;
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272
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273 tdict = PyThreadState_GetDict();
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274 if (tdict == NULL) {
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275 PyErr_SetString(PyExc_SystemError,
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276 "Couldn't get thread-state dictionary");
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277 return NULL;
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278 }
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279
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280 ldict = PyDict_GetItem(tdict, self->key);
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281 if (ldict == NULL) {
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282 ldict = PyDict_New(); /* we own ldict */
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283
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284 if (ldict == NULL)
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285 return NULL;
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286 else {
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287 int i = PyDict_SetItem(tdict, self->key, ldict);
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288 Py_DECREF(ldict); /* now ldict is borrowed */
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289 if (i < 0)
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290 return NULL;
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291 }
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292
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293 Py_CLEAR(self->dict);
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294 Py_INCREF(ldict);
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295 self->dict = ldict; /* still borrowed */
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296
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297 if (Py_TYPE(self)->tp_init != PyBaseObject_Type.tp_init &&
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298 Py_TYPE(self)->tp_init((PyObject*)self,
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299 self->args, self->kw) < 0) {
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300 /* we need to get rid of ldict from thread so
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301 we create a new one the next time we do an attr
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302 acces */
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303 PyDict_DelItem(tdict, self->key);
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304 return NULL;
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305 }
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306
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307 }
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308
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309 /* The call to tp_init above may have caused another thread to run.
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310 Install our ldict again. */
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311 if (self->dict != ldict) {
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312 Py_CLEAR(self->dict);
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313 Py_INCREF(ldict);
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314 self->dict = ldict;
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315 }
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316
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317 return ldict;
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318 }
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319
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320 static int
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321 local_setattro(localobject *self, PyObject *name, PyObject *v)
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322 {
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323 PyObject *ldict;
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324
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325 ldict = _ldict(self);
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326 if (ldict == NULL)
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327 return -1;
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328
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329 return PyObject_GenericSetAttr((PyObject *)self, name, v);
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330 }
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331
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332 static PyObject *
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333 local_getdict(localobject *self, void *closure)
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334 {
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335 if (self->dict == NULL) {
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336 PyErr_SetString(PyExc_AttributeError, "__dict__");
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337 return NULL;
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338 }
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339
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340 Py_INCREF(self->dict);
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341 return self->dict;
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342 }
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343
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344 static PyGetSetDef local_getset[] = {
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345 {"__dict__", (getter)local_getdict, (setter)NULL,
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346 "Local-data dictionary", NULL},
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347 {NULL} /* Sentinel */
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348 };
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349
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350 static PyObject *local_getattro(localobject *, PyObject *);
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351
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352 static PyTypeObject localtype = {
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353 PyVarObject_HEAD_INIT(NULL, 0)
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354 /* tp_name */ "_thread._local",
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355 /* tp_basicsize */ sizeof(localobject),
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356 /* tp_itemsize */ 0,
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357 /* tp_dealloc */ (destructor)local_dealloc,
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358 /* tp_print */ 0,
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359 /* tp_getattr */ 0,
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360 /* tp_setattr */ 0,
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361 /* tp_reserved */ 0,
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362 /* tp_repr */ 0,
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363 /* tp_as_number */ 0,
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364 /* tp_as_sequence */ 0,
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365 /* tp_as_mapping */ 0,
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366 /* tp_hash */ 0,
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367 /* tp_call */ 0,
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368 /* tp_str */ 0,
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369 /* tp_getattro */ (getattrofunc)local_getattro,
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370 /* tp_setattro */ (setattrofunc)local_setattro,
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371 /* tp_as_buffer */ 0,
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372 /* tp_flags */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
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373 /* tp_doc */ "Thread-local data",
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374 /* tp_traverse */ (traverseproc)local_traverse,
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375 /* tp_clear */ (inquiry)local_clear,
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376 /* tp_richcompare */ 0,
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377 /* tp_weaklistoffset */ 0,
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378 /* tp_iter */ 0,
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379 /* tp_iternext */ 0,
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380 /* tp_methods */ 0,
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381 /* tp_members */ 0,
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382 /* tp_getset */ local_getset,
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383 /* tp_base */ 0,
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384 /* tp_dict */ 0, /* internal use */
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385 /* tp_descr_get */ 0,
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386 /* tp_descr_set */ 0,
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387 /* tp_dictoffset */ offsetof(localobject, dict),
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388 /* tp_init */ 0,
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389 /* tp_alloc */ 0,
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390 /* tp_new */ local_new,
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391 /* tp_free */ 0, /* Low-level free-mem routine */
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392 /* tp_is_gc */ 0, /* For PyObject_IS_GC */
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393 };
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394
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395 static PyObject *
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396 local_getattro(localobject *self, PyObject *name)
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397 {
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398 PyObject *ldict, *value;
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399
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400 ldict = _ldict(self);
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401 if (ldict == NULL)
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402 return NULL;
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403
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404 if (Py_TYPE(self) != &localtype)
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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 /* 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
406 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
407
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 /* 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
409 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
410 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
411 /* 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
412 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
413
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 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
415 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
416 }
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
417
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
418 /* Module functions */
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
419
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
420 struct bootstate {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
421 PyInterpreterState *interp;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
422 PyObject *func;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
423 PyObject *args;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
424 PyObject *keyw;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
425 };
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
426
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
427 static void
13497
95454b73ea91 ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
428 t_bootstrap(void *boot_raw)
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
429 {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
430 struct bootstate *boot = (struct bootstate *) boot_raw;
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
431 PyThreadState *tstate;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
432 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
433
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
434 tstate = PyThreadState_New(boot->interp);
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
435
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
436 PyEval_AcquireThread(tstate);
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
437 res = PyEval_CallObjectWithKeywords(
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
438 boot->func, boot->args, boot->keyw);
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
439 if (res == NULL) {
8433
7cdff8aa8318 t_bootstrap(): Use PyErr_ExceptionMatches(...) instead of PyErr_Occurred(...).
Fred Drake <fdrake@acm.org>
parents: 7211
diff changeset
440 if (PyErr_ExceptionMatches(PyExc_SystemExit))
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
441 PyErr_Clear();
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
442 else {
28889
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
443 PyObject *file;
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
444 PySys_WriteStderr(
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
445 "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
446 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
447 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
448 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
449 else
96b6cc5d408b When an unhandled exception happens, report the repr() of the function
Guido van Rossum <guido@python.org>
parents: 25127
diff changeset
450 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
451 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
452 PyErr_PrintEx(0);
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
453 }
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
454 }
2055
cf31eab6ab5a Another bulky set of minor changes.
Guido van Rossum <guido@python.org>
parents: 1746
diff changeset
455 else
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
456 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
457 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
458 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
459 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
460 PyMem_DEL(boot_raw);
35117
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
461 PyThreadState_Clear(tstate);
7ea2be2c0e1d Fix bug:
Michael W. Hudson <mwh@python.net>
parents: 35086
diff changeset
462 PyThreadState_DeleteCurrent();
8823
f2a4a2b60860 Changes for BeOS, QNX and long long, by Chris Herborth.
Guido van Rossum <guido@python.org>
parents: 8567
diff changeset
463 PyThread_exit_thread();
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
464 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
465
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
466 static PyObject *
13497
95454b73ea91 ANSI-fication
Peter Schneider-Kamp <nowonder@nowonder.de>
parents: 13256
diff changeset
467 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
468 {
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
469 PyObject *func, *args, *keyw = NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
470 struct bootstate *boot;
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
471 long ident;
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
472
38669
19fd6141940d Partially merge trunk into p3yk. The removal of Mac/Tools is confusing svn
Thomas Wouters <thomas@python.org>
parents: 38453
diff changeset
473 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
474 &func, &args, &keyw))
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
475 return NULL;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
476 if (!PyCallable_Check(func)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
477 PyErr_SetString(PyExc_TypeError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
478 "first arg must be callable");
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
479 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
480 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
481 if (!PyTuple_Check(args)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
482 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
483 "2nd arg must be a tuple");
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
484 return NULL;
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
485 }
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
486 if (keyw != NULL && !PyDict_Check(keyw)) {
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
487 PyErr_SetString(PyExc_TypeError,
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
488 "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
489 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
490 }
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
491 boot = PyMem_NEW(struct bootstate, 1);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
492 if (boot == NULL)
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
493 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
494 boot->interp = PyThreadState_GET()->interp;
5405
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
495 boot->func = func;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
496 boot->args = args;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
497 boot->keyw = keyw;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
498 Py_INCREF(func);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
499 Py_INCREF(args);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
500 Py_XINCREF(keyw);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
501 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
502 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
503 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
504 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
505 Py_DECREF(func);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
506 Py_DECREF(args);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
507 Py_XDECREF(keyw);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
508 PyMem_DEL(boot);
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
509 return NULL;
b7871ca930ad Massive changes for separate thread state management.
Guido van Rossum <guido@python.org>
parents: 4944
diff changeset
510 }
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
511 return PyLong_FromLong(ident);
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
512 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
513
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
514 PyDoc_STRVAR(start_new_doc,
20266
241ef8a923c7 Fix typo in docstring
Andrew M. Kuchling <amk@amk.ca>
parents: 16140
diff changeset
515 "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
516 (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
517 \n\
20468
ebfd87e87884 Partial patch from SF #452266, by Jason Petrone.
Guido van Rossum <guido@python.org>
parents: 20266
diff changeset
518 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
519 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
520 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
521 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
522 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
523 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
524
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
525 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
526 thread_PyThread_exit_thread(PyObject *self)
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
527 {
4751
7ab835f87f86 Renamed.
Barry Warsaw <barry@python.org>
parents: 4600
diff changeset
528 PyErr_SetNone(PyExc_SystemExit);
2568
2c61786327cf implement exit_thread through SystemExit exception
Guido van Rossum <guido@python.org>
parents: 2123
diff changeset
529 return NULL;
923
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
530 }
72aceed365d4 * Makefile adapted to changes below.
Guido van Rossum <guido@python.org>
parents:
diff changeset
531
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
532 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
533 "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
534 (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
535 \n\
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
536 This is synonymous to ``raise SystemExit''. It will cause the current\n\
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 22865
diff changeset
537 thread to exit silently unless the exception is caught.");
8562
ff9adb57b8b5 Added doc strings. Also export LockType from the modoule, and give it
Guido van Rossum <guido@python.org>
parents: 8433
diff changeset
538
29444
8d160095eb66 Add interrupt_main() to thread module.
Kurt B. Kaiser <kbk@shore.net>
parents: 28889
diff changeset
539 static PyObject *
29498
1402f265e48f Correct function name.
Kurt B. Kaiser <kbk@shore.net>
parents: 29444
diff changeset
540 thread_PyThread_interrupt_main(PyObject * self)
29444
8d160095eb66 Add interrupt_main() to thread module.
Kurt B. Kaiser <kbk@shore.net>
parents: 28889
diff changeset
541 {
8d160095eb66 Add interrupt_main() to thread module.
Kurt B. Kaiser <kbk@shore.net>
parents: 28889
diff changeset
542 PyErr_SetInterrupt();
8d160095eb66 Add interrupt_main() to thread module.
Kurt B. Kaiser <kbk@shore.net>
parents: 28889
diff changeset
543 Py_INCREF(Py_None);
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544 return Py_None;
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545 }
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546
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diff changeset
547 PyDoc_STRVAR(interrupt_doc,
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548 "interrupt_main()\n\
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549 \n\
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550 Raise a KeyboardInterrupt in the main thread.\n\
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551 A subthread can use this function to interrupt the main thread."
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552 );
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553
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554 #ifndef NO_EXIT_PROG
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555 static PyObject *
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556 thread_PyThread_exit_prog(PyObject *self, PyObject *args)
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557 {
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558 int sts;
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559 if (!PyArg_ParseTuple(args, "i:exit_prog", &sts))
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560 return NULL;
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561 Py_Exit(sts); /* Calls PyThread_exit_prog(sts) or _PyThread_exit_prog(sts) */
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562 for (;;) { } /* Should not be reached */
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563 }
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564 #endif
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565
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566 static lockobject *newlockobject(void);
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567
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568 static PyObject *
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569 thread_PyThread_allocate_lock(PyObject *self)
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570 {
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571 return (PyObject *) newlockobject();
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572 }
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573
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574 PyDoc_STRVAR(allocate_doc,
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575 "allocate_lock() -> lock object\n\
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576 (allocate() is an obsolete synonym)\n\
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577 \n\
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578 Create a new lock object. See LockType.__doc__ for information about locks.");
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579
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580 static PyObject *
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581 thread_get_ident(PyObject *self)
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582 {
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583 long ident;
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584 ident = PyThread_get_thread_ident();
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585 if (ident == -1) {
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586 PyErr_SetString(ThreadError, "no current thread ident");
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587 return NULL;
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588 }
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589 return PyLong_FromLong(ident);
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590 }
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diff changeset
591
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592 PyDoc_STRVAR(get_ident_doc,
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593 "get_ident() -> integer\n\
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594 \n\
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595 Return a non-zero integer that uniquely identifies the current thread\n\
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596 amongst other threads that exist simultaneously.\n\
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597 This may be used to identify per-thread resources.\n\
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diff changeset
598 Even though on some platforms threads identities may appear to be\n\
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diff changeset
599 allocated consecutive numbers starting at 1, this behavior should not\n\
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600 be relied upon, and the number should be seen purely as a magic cookie.\n\
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601 A thread's identity may be reused for another thread after it exits.");
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diff changeset
602
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603 static PyObject *
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604 thread_stack_size(PyObject *self, PyObject *args)
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605 {
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606 size_t old_size;
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607 Py_ssize_t new_size = 0;
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608 int rc;
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609
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610 if (!PyArg_ParseTuple(args, "|n:stack_size", &new_size))
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611 return NULL;
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612
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613 if (new_size < 0) {
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614 PyErr_SetString(PyExc_ValueError,
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615 "size must be 0 or a positive value");
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616 return NULL;
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617 }
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618
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619 old_size = PyThread_get_stacksize();
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620
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621 rc = PyThread_set_stacksize((size_t) new_size);
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622 if (rc == -1) {
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623 PyErr_Format(PyExc_ValueError,
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624 "size not valid: %zd bytes",
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625 new_size);
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626 return NULL;
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627 }
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628 if (rc == -2) {
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629 PyErr_SetString(ThreadError,
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630 "setting stack size not supported");
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631 return NULL;
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632 }
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633
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634 return PyLong_FromSsize_t((Py_ssize_t) old_size);
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635 }
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diff changeset
636
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637 PyDoc_STRVAR(stack_size_doc,
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638 "stack_size([size]) -> size\n\
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639 \n\
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640 Return the thread stack size used when creating new threads. The\n\
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641 optional size argument specifies the stack size (in bytes) to be used\n\
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diff changeset
642 for subsequently created threads, and must be 0 (use platform or\n\
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643 configured default) or a positive integer value of at least 32,768 (32k).\n\
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644 If changing the thread stack size is unsupported, a ThreadError\n\
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645 exception is raised. If the specified size is invalid, a ValueError\n\
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646 exception is raised, and the stack size is unmodified. 32k bytes\n\
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647 currently the minimum supported stack size value to guarantee\n\
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648 sufficient stack space for the interpreter itself.\n\
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649 \n\
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650 Note that some platforms may have particular restrictions on values for\n\
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651 the stack size, such as requiring a minimum stack size larger than 32kB or\n\
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652 requiring allocation in multiples of the system memory page size\n\
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653 - platform documentation should be referred to for more information\n\
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654 (4kB pages are common; using multiples of 4096 for the stack size is\n\
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655 the suggested approach in the absence of more specific information).");
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656
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657 static PyMethodDef thread_methods[] = {
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658 {"start_new_thread", (PyCFunction)thread_PyThread_start_new_thread,
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659 METH_VARARGS,
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660 start_new_doc},
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661 {"start_new", (PyCFunction)thread_PyThread_start_new_thread,
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662 METH_VARARGS,
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663 start_new_doc},
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664 {"allocate_lock", (PyCFunction)thread_PyThread_allocate_lock,
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diff changeset
665 METH_NOARGS, allocate_doc},
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666 {"allocate", (PyCFunction)thread_PyThread_allocate_lock,
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667 METH_NOARGS, allocate_doc},
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668 {"exit_thread", (PyCFunction)thread_PyThread_exit_thread,
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669 METH_NOARGS, exit_doc},
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670 {"exit", (PyCFunction)thread_PyThread_exit_thread,
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671 METH_NOARGS, exit_doc},
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672 {"interrupt_main", (PyCFunction)thread_PyThread_interrupt_main,
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673 METH_NOARGS, interrupt_doc},
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674 {"get_ident", (PyCFunction)thread_get_ident,
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675 METH_NOARGS, get_ident_doc},
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Thomas Wouters <thomas@python.org>
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676 {"stack_size", (PyCFunction)thread_stack_size,
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677 METH_VARARGS,
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678 stack_size_doc},
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Guido van Rossum <guido@python.org>
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679 #ifndef NO_EXIT_PROG
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680 {"exit_prog", (PyCFunction)thread_PyThread_exit_prog,
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681 METH_VARARGS},
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682 #endif
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683 {NULL, NULL} /* sentinel */
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684 };
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685
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686
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687 /* Initialization function */
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688
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Martin v. Löwis <martin@v.loewis.de>
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689 PyDoc_STRVAR(thread_doc,
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690 "This module provides primitive operations to write multi-threaded programs.\n\
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691 The 'threading' module provides a more convenient interface.");
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692
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Martin v. Löwis <martin@v.loewis.de>
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693 PyDoc_STRVAR(lock_doc,
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694 "A lock object is a synchronization primitive. To create a lock,\n\
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877d23bd5bdc Thanks to Chris Herborth, the thread primitives now have proper Py*
Guido van Rossum <guido@python.org>
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695 call the PyThread_allocate_lock() function. Methods are:\n\
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Guido van Rossum <guido@python.org>
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696 \n\
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697 acquire() -- lock the lock, possibly blocking until it can be obtained\n\
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698 release() -- unlock of the lock\n\
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699 locked() -- test whether the lock is currently locked\n\
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700 \n\
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701 A lock is not owned by the thread that locked it; another thread may\n\
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Guido van Rossum <guido@python.org>
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702 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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703 will block until another thread unlocks it. Deadlocks may ensue.");
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704
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Martin v. Löwis <martin@v.loewis.de>
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705 static struct PyModuleDef threadmodule = {
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Martin v. Löwis <martin@v.loewis.de>
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706 PyModuleDef_HEAD_INIT,
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Martin v. Löwis <martin@v.loewis.de>
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707 "_thread",
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Martin v. Löwis <martin@v.loewis.de>
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708 thread_doc,
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Martin v. Löwis <martin@v.loewis.de>
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709 -1,
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710 thread_methods,
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711 NULL,
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712 NULL,
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713 NULL,
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714 NULL
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715 };
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716
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717
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Mark Hammond <mhammond@skippinet.com.au>
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718 PyMODINIT_FUNC
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Martin v. Löwis <martin@v.loewis.de>
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719 PyInit__thread(void)
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720 {
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Barry Warsaw <barry@python.org>
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721 PyObject *m, *d;
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Michael W. Hudson <mwh@python.net>
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722
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723 /* Initialize types: */
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724 if (PyType_Ready(&localtype) < 0)
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725 return NULL;
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726 if (PyType_Ready(&Locktype) < 0)
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727 return NULL;
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728
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729 /* Create the module and add the functions */
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730 m = PyModule_Create(&threadmodule);
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731 if (m == NULL)
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732 return NULL;
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733
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734 /* Add a symbolic constant */
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735 d = PyModule_GetDict(m);
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Georg Brandl <georg@python.org>
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736 ThreadError = PyErr_NewException("_thread.error", NULL, NULL);
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737 PyDict_SetItemString(d, "error", ThreadError);
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738 Locktype.tp_doc = lock_doc;
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739 Py_INCREF(&Locktype);
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740 PyDict_SetItemString(d, "LockType", (PyObject *)&Locktype);
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741
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742 Py_INCREF(&localtype);
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743 if (PyModule_AddObject(m, "_local", (PyObject *)&localtype) < 0)
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744 return NULL;
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Jim Fulton <jim@zope.com>
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745
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746 /* Initialize the C thread library */
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747 PyThread_init_thread();
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748 return m;
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749 }