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add the gcc atomic builtin fetch_and_add

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git-svn-id: file:///svn/tokudb@5501 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Rich Prohaska 2008-08-04 18:05:09 +00:00
parent f4d9c56627
commit 58435beac0
1 changed files with 12 additions and 0 deletions
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12
newbrt/locking-benchmarks/pthread-locks.c
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@ -62,6 +62,12 @@ fetch_and_add_i (volatile int *p, int incr)
return result;
}
static inline int
gcc_fetch_and_add_i (volatile int *p, int incr)
{
return __sync_fetch_and_add(p, incr);
}
// Something wrong with the compiler for longs
/* Returns nonzero if the comparison succeeded. */
static inline long
@ -139,6 +145,12 @@ int main (int argc __attribute__((__unused__)), char *argv[] __attribute__((__un
TIME("fetchadd", i,
(void)0,
fetch_and_add_i(&fa, i));
// printf("fa=%d\n", fa);
fa=0;
TIME("gcc_fetchadd", i,
(void)0,
gcc_fetch_and_add_i(&fa, i));
// printf("fa=%d\n", fa);
TIME("compare_and_swap", i,
ivals[i]=0,
({ int r=compare_and_swap_full_i(&ivals[i], 0, 1); assert(r==1); }));