ignore pad argument to malloc_trim per glibc
The pad argument is only used by the main arena for sbrk in glibc, with every other page size gap purged with MADV_DONTNEED. It makes more sense to simply treat it as an ignored legacy parameter rather than trying to come up with a sensible way to use it for keeping cached free slabs.
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8
malloc.c
8
malloc.c
@ -981,13 +981,7 @@ EXPORT int h_mallopt(UNUSED int param, UNUSED int value) {
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return 0;
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}
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static const size_t pad_threshold = max_empty_slabs_total * N_SIZE_CLASSES;
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EXPORT int h_malloc_trim(size_t pad) {
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if (pad > pad_threshold) {
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return 0;
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}
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EXPORT int h_malloc_trim(UNUSED size_t pad) {
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if (!is_init()) {
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return 0;
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}
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