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spinlock: prefer weak xchg when spinning

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Danny Robson 2018-03-15 23:48:50 +11:00
parent 12d401b98b
commit e1d87afe37
1 changed files with 1 additions and 1 deletions
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job/spinlock.cpp
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@ -39,7 +39,7 @@ spinlock::lock (void)
{ {
do { do {
bool expected = false; bool expected = false;
if (held.compare_exchange_strong (expected, true)) if (held.compare_exchange_weak (expected, true))
return; return;
while (held) while (held)