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atomic: Add an atomic type for 64-bit operations

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This commit is contained in:
Vicent Marti 2013-04-22 17:22:31 +02:00
parent d08dd728a8
commit f9774eea3a
1 changed files with 42 additions and 0 deletions
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42
src/thread-utils.h
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@ -18,6 +18,14 @@ typedef struct {
#endif
} git_atomic;
typedef struct {
#if defined(GIT_WIN32)
__int64 val;
#else
int64_t val;
#endif
} git_atomic64;
GIT_INLINE(void) git_atomic_set(git_atomic *a, int val)
{
a->val = val;
@ -57,6 +65,17 @@ GIT_INLINE(int) git_atomic_inc(git_atomic *a)
#endif
}
GIT_INLINE(int) git_atomic_add(git_atomic *a, int32_t addend)
{
#if defined(GIT_WIN32)
return _InterlockedExchangeAdd(&a->val, addend);
#elif defined(__GNUC__)
return __sync_add_and_fetch(&a->val, addend);
#else
# error "Unsupported architecture for atomic operations"
#endif
}
GIT_INLINE(int) git_atomic_dec(git_atomic *a)
{
#if defined(GIT_WIN32)
@ -82,6 +101,17 @@ GIT_INLINE(void *) git___compare_and_swap(
return (foundval == oldval) ? oldval : newval;
}
GIT_INLINE(int) git_atomic64_add(git_atomic64 *a, int64_t addend)
{
#if defined(GIT_WIN32)
return _InterlockedExchangeAdd64(&a->val, addend);
#elif defined(__GNUC__)
return __sync_add_and_fetch(&a->val, addend);
#else
# error "Unsupported architecture for atomic operations"
#endif
}
#else
#define git_thread unsigned int
@ -110,6 +140,12 @@ GIT_INLINE(int) git_atomic_inc(git_atomic *a)
return ++a->val;
}
GIT_INLINE(int) git_atomic_add(git_atomic *a, int32_t addend)
{
a->val += addend;
return a->val;
}
GIT_INLINE(int) git_atomic_dec(git_atomic *a)
{
return --a->val;
@ -125,6 +161,12 @@ GIT_INLINE(void *) git___compare_and_swap(
return oldval;
}
GIT_INLINE(int) git_atomic64_add(git_atomic64 *a, int64_t addend)
{
a->val += addend;
return a->val;
}
#endif
/* Atomically replace oldval with newval