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annotate Include/cobject.h @ 58765:2ba7677bfa95 legacy-trunk

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testCopysign was defined twice in test_math; combine the definitions
author Mark Dickinson <dickinsm@gmail.com>
date Sat, 06 Feb 2010 23:11:25 +0000
parents bbffe0914c56
children 911df82bc25d d11fbc796499
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44f48aaca8bf opaque C object a la Jim Fulton
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1
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2 /* C objects to be exported from one extension module to another.
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4 C objects are used for communication between extension modules.
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5 They provide a way for an extension module to export a C interface
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6 to other extension modules, so that extension modules can use the
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7 Python import mechanism to link to one another.
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9 */
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10
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5709ddba423c ANSI-fication and Py_PROTO extermination.
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11 #ifndef Py_COBJECT_H
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12 #define Py_COBJECT_H
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13 #ifdef __cplusplus
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14 extern "C" {
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15 #endif
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16
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17 PyAPI_DATA(PyTypeObject) PyCObject_Type;
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19 #define PyCObject_Check(op) (Py_TYPE(op) == &PyCObject_Type)
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21 /* Create a PyCObject from a pointer to a C object and an optional
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22 destructor function. If the second argument is non-null, then it
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23 will be called with the first argument if and when the PyCObject is
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24 destroyed.
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26 */
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27 PyAPI_FUNC(PyObject *) PyCObject_FromVoidPtr(
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28 void *cobj, void (*destruct)(void*));
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31 /* Create a PyCObject from a pointer to a C object, a description object,
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32 and an optional destructor function. If the third argument is non-null,
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33 then it will be called with the first and second arguments if and when
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34 the PyCObject is destroyed.
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35 */
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36 PyAPI_FUNC(PyObject *) PyCObject_FromVoidPtrAndDesc(
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37 void *cobj, void *desc, void (*destruct)(void*,void*));
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39 /* Retrieve a pointer to a C object from a PyCObject. */
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40 PyAPI_FUNC(void *) PyCObject_AsVoidPtr(PyObject *);
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42 /* Retrieve a pointer to a description object from a PyCObject. */
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43 PyAPI_FUNC(void *) PyCObject_GetDesc(PyObject *);
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45 /* Import a pointer to a C object from a module using a PyCObject. */
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46 PyAPI_FUNC(void *) PyCObject_Import(char *module_name, char *cobject_name);
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07a0a0726649 Make CObjects mutable. Fixes #477441.
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48 /* Modify a C object. Fails (==0) if object has a destructor. */
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49 PyAPI_FUNC(int) PyCObject_SetVoidPtr(PyObject *self, void *cobj);
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52 typedef struct {
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53 PyObject_HEAD
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54 void *cobject;
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55 void *desc;
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56 void (*destructor)(void *);
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57 } PyCObject;
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60 #ifdef __cplusplus
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61 }
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62 #endif
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63 #endif /* !Py_COBJECT_H */