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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 | cdf2b2dfea2fb004fc7a938c24adf4c6aea880d7 (patch) | |
| tree | 84312cf489220baa9b987a69662aca5cf1ad2ced /llvm/lib/System/Atomic.cpp | |
| parent | 4ed41c8be8f5b88158e0f2c473f5e1de2d0ea753 (diff) | |
| download | bcm5719-llvm-cdf2b2dfea2fb004fc7a938c24adf4c6aea880d7.tar.gz bcm5719-llvm-cdf2b2dfea2fb004fc7a938c24adf4c6aea880d7.zip | |
Add an atomic add operation.
llvm-svn: 73964
Diffstat (limited to 'llvm/lib/System/Atomic.cpp')
| -rw-r--r-- | llvm/lib/System/Atomic.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/System/Atomic.cpp b/llvm/lib/System/Atomic.cpp index 416f981df82..6e751a30d4d 100644 --- a/llvm/lib/System/Atomic.cpp +++ b/llvm/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 +} + |
