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Inline tcache functions 

The functions tcache_get and tcache_put show up in profiles as they
are a critical part of the tcache code.  Inline them to give tcache
a 16% performance gain.  Since this improves multi-threaded cases
as well, it helps offset any potential performance loss due to adding
single-threaded fast paths.

	* malloc/malloc.c (tcache_put): Inline.
	(tcache_get): Inline.
This commit is contained in:
Wilco Dijkstra 2017-10-17 18:25:43 +01:00
parent 8867c3c14b
commit e4dd4ace56
2 changed files with 7 additions and 2 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2017-10-17 Wilco Dijkstra <wdijkstr@arm.com>
* malloc/malloc.c (tcache_put): Inline.
(tcache_get): Inline.
2017-10-17 Jordi Mallach <jordi@gnu.org>
Aurelien Jarno <aurelien@aurel32.net>

4
malloc/malloc.c
View File

@ -2921,7 +2921,7 @@ static __thread tcache_perthread_struct *tcache = NULL;
/* Caller must ensure that we know tc_idx is valid and there's room
for more chunks. */
static void
static __always_inline void
tcache_put (mchunkptr chunk, size_t tc_idx)
{
tcache_entry *e = (tcache_entry *) chunk2mem (chunk);
@ -2933,7 +2933,7 @@ tcache_put (mchunkptr chunk, size_t tc_idx)
/* Caller must ensure that we know tc_idx is valid and there's
available chunks to remove. */
static void *
static __always_inline void *
tcache_get (size_t tc_idx)
{
tcache_entry *e = tcache->entries[tc_idx];