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| author | mgrice <mgrice@fb.com> | 2019-03-08 19:50:30 (GMT) |
|---|---|---|
| committer | Qi Wang <interwq@gmail.com> | 2019-04-08 17:59:05 (GMT) |
| commit | d3d7a8ef09b6fa79109e8930aaba7a677f8b24ac (patch) | |
| tree | 33aeb53a9e962c9092a7f9d1b8365ca26e5ebfad /include/jemalloc | |
| parent | c2a3a7cd3f3cbc177d677101be85a31a39c26bd0 (diff) | |
| download | jemalloc-d3d7a8ef09b6fa79109e8930aaba7a677f8b24ac.zip jemalloc-d3d7a8ef09b6fa79109e8930aaba7a677f8b24ac.tar.gz jemalloc-d3d7a8ef09b6fa79109e8930aaba7a677f8b24ac.tar.bz2 | |
remove compare and branch in fast path for c++ operator delete[]
Summary: sdallocx is checking a flag that will never be set (at least in the provided C++ destructor implementation). This branch will probably only rarely be mispredicted however it removes two instructions in sdallocx and one at the callsite (to zero out flags).
Diffstat (limited to 'include/jemalloc')
| -rw-r--r-- | include/jemalloc/internal/jemalloc_internal_externs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/jemalloc/internal/jemalloc_internal_externs.h b/include/jemalloc/internal/jemalloc_internal_externs.h index b784362..cdbc33a 100644 --- a/include/jemalloc/internal/jemalloc_internal_externs.h +++ b/include/jemalloc/internal/jemalloc_internal_externs.h @@ -51,5 +51,6 @@ void jemalloc_prefork(void); void jemalloc_postfork_parent(void); void jemalloc_postfork_child(void); bool malloc_initialized(void); +void je_sdallocx_noflags(void *ptr, size_t size); #endif /* JEMALLOC_INTERNAL_EXTERNS_H */ |