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authorRich Felker <dalias@aerifal.cx>2012-09-14 23:52:51 -0400
committerRich Felker <dalias@aerifal.cx>2012-09-14 23:52:51 -0400
commitafd209deb7d3bfc9cc31713e2cb8f22693ca6fae (patch)
tree1988e392e57f4598e1a6371ea40162eaf7804f44 /src/malloc
parent9f74574fe697f0908d766579e73d94fc621463d4 (diff)
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workaround gcc got-register-reload performance problems in malloc
with this patch, the malloc in libc.so built with -Os is nearly the same speed as the one built with -O3. thus it solves the performance regression that resulted from removing the forced -O3 when building libc.so; now libc.so can be both small and fast.
Diffstat (limited to 'src/malloc')
-rw-r--r--src/malloc/malloc.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/src/malloc/malloc.c b/src/malloc/malloc.c
index 39c7d051..88a31ae4 100644
--- a/src/malloc/malloc.c
+++ b/src/malloc/malloc.c
@@ -9,6 +9,10 @@
#include "atomic.h"
#include "pthread_impl.h"
+#if defined(__GNUC__) && defined(__PIC__)
+#define inline inline __attribute__((always_inline))
+#endif
+
uintptr_t __brk(uintptr_t);
void *__mmap(void *, size_t, int, int, int, off_t);
int __munmap(void *, size_t);
@@ -58,20 +62,20 @@ static struct {
/* Synchronization tools */
-static void lock(volatile int *lk)
+static inline void lock(volatile int *lk)
{
if (!libc.threads_minus_1) return;
while(a_swap(lk, 1)) __wait(lk, lk+1, 1, 1);
}
-static void unlock(volatile int *lk)
+static inline void unlock(volatile int *lk)
{
if (!libc.threads_minus_1) return;
a_store(lk, 0);
if (lk[1]) __wake(lk, 1, 1);
}
-static void lock_bin(int i)
+static inline void lock_bin(int i)
{
if (libc.threads_minus_1)
lock(mal.bins[i].lock);
@@ -79,7 +83,7 @@ static void lock_bin(int i)
mal.bins[i].head = mal.bins[i].tail = BIN_TO_CHUNK(i);
}
-static void unlock_bin(int i)
+static inline void unlock_bin(int i)
{
if (!libc.threads_minus_1) return;
unlock(mal.bins[i].lock);