diff options
Diffstat (limited to 'lib/System/Atomic.cpp')
| -rw-r--r-- | lib/System/Atomic.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/System/Atomic.cpp b/lib/System/Atomic.cpp index 7ba8b774d5..a8835e37e1 100644 --- a/lib/System/Atomic.cpp +++ b/lib/System/Atomic.cpp @@ -13,6 +13,9 @@ #include "llvm/System/Atomic.h" #include "llvm/Config/config.h" +#if defined(ANDROID_TARGET_BUILD) +# include "sys/atomics.h" +#endif using namespace llvm; @@ -43,6 +46,8 @@ sys::cas_flag sys::CompareAndSwap(volatile sys::cas_flag* ptr, if (result == old_value) *ptr = new_value; return result; +#elif defined(ANDROID_TARGET_BUILD) + return __atomic_cmpxchg(old_value, new_value, (volatile int*)ptr); #elif defined(__GNUC__) return __sync_val_compare_and_swap(ptr, old_value, new_value); #elif defined(_MSC_VER) @@ -56,6 +61,8 @@ sys::cas_flag sys::AtomicIncrement(volatile sys::cas_flag* ptr) { #if LLVM_MULTITHREADED==0 ++(*ptr); return *ptr; +#elif defined(ANDROID_TARGET_BUILD) + return __atomic_inc((volatile int*)ptr); #elif defined(__GNUC__) return __sync_add_and_fetch(ptr, 1); #elif defined(_MSC_VER) @@ -69,6 +76,8 @@ sys::cas_flag sys::AtomicDecrement(volatile sys::cas_flag* ptr) { #if LLVM_MULTITHREADED==0 --(*ptr); return *ptr; +#elif defined(ANDROID_TARGET_BUILD) + return __atomic_dec((volatile int*)ptr); #elif defined(__GNUC__) return __sync_sub_and_fetch(ptr, 1); #elif defined(_MSC_VER) @@ -82,6 +91,13 @@ sys::cas_flag sys::AtomicAdd(volatile sys::cas_flag* ptr, sys::cas_flag val) { #if LLVM_MULTITHREADED==0 *ptr += val; return *ptr; +#elif defined(ANDROID_TARGET_BUILD) + sys::cas_flag original, result; + do { + original = *ptr; + result = original + val; + } while (__atomic_cmpxchg(original, result, (volatile int*)ptr) != original); + return result; #elif defined(__GNUC__) return __sync_add_and_fetch(ptr, val); #elif defined(_MSC_VER) |