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| author | Owen Anderson <resistor@mac.com> | 2009-06-23 17:39:31 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2009-06-23 17:39:31 +0000 |
| commit | 485a07612a57a2d4a7ddc6da6f4a12391bdaf793 (patch) | |
| tree | def143fec6c5f9440ec541ed7058cf551be413b1 /lib/System/Atomic.cpp | |
| parent | 1b2ea53c7c27b3bd6c6a133e3e7d52c97607f593 (diff) | |
| download | external_llvm-485a07612a57a2d4a7ddc6da6f4a12391bdaf793.zip external_llvm-485a07612a57a2d4a7ddc6da6f4a12391bdaf793.tar.gz external_llvm-485a07612a57a2d4a7ddc6da6f4a12391bdaf793.tar.bz2 | |
Add an atomic add operation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73964 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/System/Atomic.cpp')
| -rw-r--r-- | lib/System/Atomic.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/System/Atomic.cpp b/lib/System/Atomic.cpp index 416f981..6e751a3 100644 --- a/lib/System/Atomic.cpp +++ b/lib/System/Atomic.cpp @@ -78,4 +78,17 @@ sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) { #endif } +sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) { +#if LLVM_MULTITHREADED==0 + *ptr += val; + return *ptr; +#elif defined(__GNUC__) + return __sync_add_and_fetch(ptr, val); +#elif defined(_MSC_VER) + return InterlockedAdd(ptr, val); +#else +# error No atomic add implementation for your platform! +#endif +} + |