devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fiw shadowing of last and all

Browse Source
This commit is contained in:
Gael Guennebaud
2018-09-21 23:02:33 +02:00
parent e3c8289047
commit c696dbcaa6
6 changed files with 59 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
unsupported/Eigen/CXX11/src/ThreadPool/EventCount.h
View File

@@ -128,7 +128,7 @@ class EventCount {
// Notify wakes one or all waiting threads.
// Must be called after changing the associated wait predicate.
void Notify(bool all) {
void Notify(bool notifyAll) {
std::atomic_thread_fence(std::memory_order_seq_cst);
uint64_t state = state_.load(std::memory_order_acquire);
for (;;) {
@@ -137,7 +137,7 @@ class EventCount {
return;
uint64_t waiters = (state & kWaiterMask) >> kWaiterShift;
uint64_t newstate;
if (all) {
if (notifyAll) {
// Reset prewait counter and empty wait list.
newstate = (state & kEpochMask) + (kEpochInc * waiters) + kStackMask;
} else if (waiters) {
@@ -157,10 +157,10 @@ class EventCount {
}
if (state_.compare_exchange_weak(state, newstate,
std::memory_order_acquire)) {
if (!all && waiters) return; // unblocked pre-wait thread
if (!notifyAll && waiters) return; // unblocked pre-wait thread
if ((state & kStackMask) == kStackMask) return;
Waiter* w = &waiters_[state & kStackMask];
if (!all) w->next.store(nullptr, std::memory_order_relaxed);
if (!notifyAll) w->next.store(nullptr, std::memory_order_relaxed);
Unpark(w);
return;
}