diff options
Diffstat (limited to 'Python/gc_free_threading.c')
| -rw-r--r-- | Python/gc_free_threading.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/Python/gc_free_threading.c b/Python/gc_free_threading.c new file mode 100644 index 00000000000..aea272840f9 --- /dev/null +++ b/Python/gc_free_threading.c @@ -0,0 +1,32 @@ +#include "Python.h" +#include "pycore_pystate.h" // _PyFreeListState_GET() +#include "pycore_tstate.h" // _PyThreadStateImpl + +#ifdef Py_GIL_DISABLED + +/* Clear all free lists + * All free lists are cleared during the collection of the highest generation. + * Allocated items in the free list may keep a pymalloc arena occupied. + * Clearing the free lists may give back memory to the OS earlier. + * Free-threading version: Since freelists are managed per thread, + * GC should clear all freelists by traversing all threads. + */ +void +_PyGC_ClearAllFreeLists(PyInterpreterState *interp) +{ + _PyTuple_ClearFreeList(interp); + _PyFloat_ClearFreeList(interp); + _PyDict_ClearFreeList(interp); + _PyAsyncGen_ClearFreeLists(interp); + _PyContext_ClearFreeList(interp); + + HEAD_LOCK(&_PyRuntime); + _PyThreadStateImpl *tstate = (_PyThreadStateImpl *)interp->threads.head; + while (tstate != NULL) { + _Py_ClearFreeLists(&tstate->freelist_state, 0); + tstate = (_PyThreadStateImpl *)tstate->base.next; + } + HEAD_UNLOCK(&_PyRuntime); +} + +#endif |