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Re-enable spinlocks

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For branch C++11, that doe snot run on fishtest,
there is no need of this kludge, let only master
have it.

No functional change.
This commit is contained in:
Marco Costalba 2015-03-07 08:36:23 +01:00
parent 6645115377
commit a590d1d52d
2 changed files with 1 additions and 16 deletions
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14
src/thread.h
View file

@ -39,7 +39,7 @@ const size_t MAX_THREADS = 128;
const size_t MAX_SPLITPOINTS_PER_THREAD = 8; const size_t MAX_SPLITPOINTS_PER_THREAD = 8;
const size_t MAX_SLAVES_PER_SPLITPOINT = 4; const size_t MAX_SLAVES_PER_SPLITPOINT = 4;
#if !defined(NO_SPINLOCK)
/// Spinlock class wraps low level atomic operations to provide a spin lock /// Spinlock class wraps low level atomic operations to provide a spin lock
class Spinlock { class Spinlock {
@ -55,18 +55,6 @@ public:
void release() { lock.store(1, std::memory_order_release); } void release() { lock.store(1, std::memory_order_release); }
}; };
#else
class Spinlock {
std::mutex mutex;
public:
void acquire() { mutex.lock(); }
void release() { mutex.unlock(); }
};
#endif
/// SplitPoint struct stores information shared by the threads searching in /// SplitPoint struct stores information shared by the threads searching in
/// parallel below the same split point. It is populated at splitting time. /// parallel below the same split point. It is populated at splitting time.

3
src/types.h
View file

@ -31,9 +31,6 @@
/// -DNO_PREFETCH | Disable use of prefetch asm-instruction. You may need this to /// -DNO_PREFETCH | Disable use of prefetch asm-instruction. You may need this to
/// | run on some very old machines. /// | run on some very old machines.
/// ///
/// -DNO_SPINLOCK | Use mutex instead of spinlocks. This is much slower, so you
/// | really don't want to do this in general case.
///
/// -DUSE_POPCNT | Add runtime support for use of popcnt asm-instruction. Works /// -DUSE_POPCNT | Add runtime support for use of popcnt asm-instruction. Works
/// | only in 64-bit mode and requires hardware with popcnt support. /// | only in 64-bit mode and requires hardware with popcnt support.
/// ///