boost/fiber
2
0
Fork 0
mirror of https://github.com/boostorg/fiber.git synced 2026-02-19 14:22:23 +00:00
Code Issues Projects Releases Wiki Activity

rename status enum of spinlock

Browse Source
This commit is contained in:
Oliver Kowalke
2015-12-21 17:20:04 +01:00
parent 8ef55049c6
commit d316cf7afe
2 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
include/boost/fiber/detail/spinlock.hpp
View File

@@ -20,12 +20,12 @@ namespace detail {
class BOOST_FIBERS_DECL atomic_spinlock {
private:
enum class atomic_spinlock_status {
enum class spinlock_status {
locked = 0,
unlocked
};
std::atomic< atomic_spinlock_status > state_{ atomic_spinlock_status::unlocked };
std::atomic< spinlock_status > state_{ spinlock_status::unlocked };
public:
atomic_spinlock() noexcept = default;

8
src/detail/spinlock.cpp
View File

@@ -22,7 +22,7 @@ atomic_spinlock::lock() noexcept {
// access to CPU's cache
// first access to state_ -> cache miss
// sucessive acccess to state_ -> cache hit
while ( atomic_spinlock_status::locked == state_.load( std::memory_order_relaxed) ) {
while ( spinlock_status::locked == state_.load( std::memory_order_relaxed) ) {
// busy-wait
std::this_thread::yield();
}
@@ -30,13 +30,13 @@ atomic_spinlock::lock() noexcept {
// cached copies are invalidated -> cache miss
// test-and-set signaled over the bus
}
while ( atomic_spinlock_status::unlocked != state_.exchange( atomic_spinlock_status::locked, std::memory_order_acquire) );
while ( spinlock_status::unlocked != state_.exchange( spinlock_status::locked, std::memory_order_acquire) );
}
void
atomic_spinlock::unlock() noexcept {
BOOST_ASSERT( atomic_spinlock_status::locked == state_);
state_.store( atomic_spinlock_status::unlocked, std::memory_order_release);
BOOST_ASSERT( spinlock_status::locked == state_);
state_.store( spinlock_status::unlocked, std::memory_order_release);
}
}}}