[issue40170] [C API] Make PyTypeObject structure an opaque structure in the public C API
STINNER Victor
report at bugs.python.org
Wed Jan 26 20:10:54 EST 2022
STINNER Victor <vstinner at python.org> added the comment:
I searched for "_PyObject_DebugMallocStats" in top 5000 PyPI projects. There is a single project using it: guppy3.
Extract of guppy3 src/heapy/xmemstats.c:
...
dlptr__PyObject_DebugMallocStats = addr_of_symbol("_PyObject_DebugMallocStats");
...
static PyObject *
hp_xmemstats(PyObject *self, PyObject *args)
{
if (dlptr__PyObject_DebugMallocStats) {
fprintf(stderr, "======================================================================\n");
fprintf(stderr, "Output from _PyObject_DebugMallocStats()\n\n");
dlptr__PyObject_DebugMallocStats(stderr);
}
...
}
addr_of_symbol() is implemented with dlsym() or GetModuleHandle(NULL)+GetProcAddress(): it searchs for the symbol in the current process.
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<https://bugs.python.org/issue40170>
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