chenBright commented on code in PR #2517:
URL: https://github.com/apache/brpc/pull/2517#discussion_r1461769853
##########
src/butil/memory/singleton.cc:
##########
@@ -5,9 +5,23 @@
#include "butil/memory/singleton.h"
#include "butil/threading/platform_thread.h"
+__BEGIN_DECLS
+// Defined in bthread/bthread.cpp
+void BAIDU_WEAK bthread_yield();
+__END_DECLS
+
namespace butil {
namespace internal {
+void yield() {
+ if (bthread_yield) {
Review Comment:
或者自旋一定次数后，再调bthread_yield，这样可以自适应地防止死锁问题，不需要用户设置。因为很多时候，用户需要等到死锁了才会发现有bthread_yield的需求。可以自适应的话，可以完全规避这个问题。
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