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43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* An arena-like memory interface for the compiler.
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*/
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#ifndef Py_PYARENA_H
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#define Py_PYARENA_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _arena PyArena;
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/* PyArena_New() and PyArena_Free() create a new arena and free it,
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respectively. Once an arena has been created, it can be used
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to allocate memory. Once it is freed, all the memory it allocated
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is freed and none of its pointers are valid.
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PyArena_New() returns an arena pointer. On error, it
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returns a negative number and sets an exception.
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XXX (tim): Not true. On error, PyArena_New() actually returns NULL,
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XXX and looks like it may or may not set an exception (e.g., if the
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XXX internal PyList_New(0) returns NULL, PyArena_New() passes that on
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XXX and an exception is set; OTOH, if the internal
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XXX block_new(DEFAULT_BLOCK_SIZE) returns NULL, that's passed on but
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XXX an exception is not set in that case).
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*/
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PyAPI_FUNC(PyArena *) PyArena_New(void);
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PyAPI_FUNC(void) PyArena_Free(PyArena *);
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PyAPI_FUNC(void *) PyArena_Malloc(PyArena *, size_t);
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/* This routines isn't a proper arena allocation routine. It takes
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a PyObject* and records it so that it can be DECREFed when the
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arena is freed.
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*/
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PyAPI_FUNC(int) PyArena_AddPyObject(PyArena *, PyObject *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_PYARENA_H */
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