A malloc library is expected to provide a better implementation
using the knowledge of its internal details.
Signed-off-by: YAMAMOTO Takashi <yamam...@valinux.co.jp>
---
lib/util.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/lib/util.c b/lib/util.c
index 464d730..37d2ba0 100644
--- a/lib/util.c
+++ b/lib/util.c
@@ -189,6 +189,18 @@ BUILD_ASSERT_DECL(CACHE_LINE_SIZE >= MEM_ALIGN);
void *
xmalloc_cacheline(size_t size)
{
+#ifdef HAVE_POSIX_MEMALIGN
+ void *p;
+ int error;
+
+ ovs_assert(size != 0);
+ COVERAGE_INC(util_xalloc);
+ error = posix_memalign(&p, CACHE_LINE_SIZE, size);
+ if (error != 0) {
+ out_of_memory();
+ }
+ return p;
+#else
void **payload;
void *base;
@@ -212,6 +224,7 @@ xmalloc_cacheline(size_t size)
*payload = base;
return (char *) payload + MEM_ALIGN;
+#endif
}
/* Like xmalloc_cacheline() but clears the allocated memory to all zero
@@ -229,9 +242,13 @@ xzalloc_cacheline(size_t size)
void
free_cacheline(void *p)
{
+#ifdef HAVE_POSIX_MEMALIGN
+ free(p);
+#else
if (p) {
free(*(void **) ((uintptr_t) p - MEM_ALIGN));
}
+#endif
}
char *
--
1.8.3.1
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