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| author | Garrett D'Amore <garrett@damore.org> | 2021-12-05 17:28:40 -0500 |
|---|---|---|
| committer | Garrett D'Amore <garrett@damore.org> | 2021-12-05 17:28:40 -0500 |
| commit | eee06d1e8365ea1b1aa9363a3c6445745b002324 (patch) | |
| tree | 101363a56893db15b7aeaf90d074f8c4b438f138 /src/platform/windows/win_thread.c | |
| parent | 111b241473ceeecee1f1c232d3c9879fb850361d (diff) | |
| download | nng-eee06d1e8365ea1b1aa9363a3c6445745b002324.tar.gz nng-eee06d1e8365ea1b1aa9363a3c6445745b002324.tar.bz2 nng-eee06d1e8365ea1b1aa9363a3c6445745b002324.zip | |
Provide atomic pointer support.
This is initially used for TLS to make loading the engine pointer
faster, eliminating a much more expensive lock operation.
Diffstat (limited to 'src/platform/windows/win_thread.c')
| -rw-r--r-- | src/platform/windows/win_thread.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/platform/windows/win_thread.c b/src/platform/windows/win_thread.c index 9c7c09d3..31e783a3 100644 --- a/src/platform/windows/win_thread.c +++ b/src/platform/windows/win_thread.c @@ -223,6 +223,18 @@ nni_atomic_set64(nni_atomic_u64 *v, uint64_t u) (void) InterlockedExchange64(&v->v, (LONGLONG) u); } +void * +nni_atomic_get_ptr(nni_atomic_ptr *v) +{ + return ((void *) (InterlockedExchangeAdd64(&v->v, 0))); +} + +void +nni_atomic_set_ptr(nni_atomic_ptr *v) +{ + (void) InterlockedExchange64(&v->v, (LONGLONG) (uintptr_t) v); +} + uint64_t nni_atomic_swap64(nni_atomic_u64 *v, uint64_t u) { |