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bpo-40602: _Py_hashtable_new() uses PyMem_Malloc() #20046

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Merged
vstinner merged 1 commit into from
May 12, 2020
Merged

bpo-40602: _Py_hashtable_new() uses PyMem_Malloc() #20046

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bpo-40602: _Py_hashtable_new() uses PyMem_Malloc() 
_Py_hashtable_new() now uses PyMem_Malloc/PyMem_Free allocator by
default, rather than PyMem_RawMalloc/PyMem_RawFree.

PyMem_Malloc is faster than PyMem_RawMalloc for memory blocks smaller
than or equal to 512 bytes.
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@vstinner
vstinner committed May 12, 2020
commit 892dbb41bc633cdeded2446eabe6c72adbd44bd2
7 changes: 4 additions & 3 deletions Python/hashtable.c
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Original file line number Diff line number Diff line change
Expand Up @@ -149,11 +149,12 @@ _Py_hashtable_new_full(size_t key_size, size_t data_size,
_Py_hashtable_allocator_t alloc;

if (allocator == NULL) {
alloc.malloc = PyMem_RawMalloc;
alloc.free = PyMem_RawFree;
alloc.malloc = PyMem_Malloc;
alloc.free = PyMem_Free;
}
else
else {
alloc = *allocator;
}

ht = (_Py_hashtable_t *)alloc.malloc(sizeof(_Py_hashtable_t));
if (ht == NULL)
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