Python

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CObjects

Warning

The CObject API is deprecated as of Python 2.7. Please switch to the new Capsules API.

PyCObject: This subtype of PyObject represents an opaque value, useful for C extension modules who need to pass an opaque value (as a void* pointer) through Python code to other C code. It is often used to make a C function pointer defined in one module available to other modules, so the regular import mechanism can be used to access C APIs defined in dynamically loaded modules.

int PyCObject_Check ( PyObject *p ): Return true if its argument is a PyCObject.

PyObject* PyCObject_FromVoidPtr (void* cobj, void ( *destr)(void *) ): Return value: New reference.
Create a PyCObject from the void * cobj. The destr function will be called when the object is reclaimed, unless it is NULL.

PyObject* PyCObject_FromVoidPtrAndDesc (void* cobj, void* desc, void ( *destr)(void *, void *) ): Return value: New reference.
Create a PyCObject from the void * cobj. The destr function will be called when the object is reclaimed. The desc argument can be used to pass extra callback data for the destructor function.

void* PyCObject_AsVoidPtr ( PyObject* self ): Return the object void * that the PyCObject self was created with.

void* PyCObject_GetDesc ( PyObject* self ): Return the description void * that the PyCObject self was created with.

int PyCObject_SetVoidPtr ( PyObject* self, void* cobj ): Set the void pointer inside self to cobj. The PyCObject must not have an associated destructor. Return true on success, false on failure.