wwbmmm commented on code in PR #1751:
URL: https://github.com/apache/incubator-brpc/pull/1751#discussion_r857521566
##########
src/bthread/countdown_event.cpp:
##########
@@ -50,7 +50,7 @@ void CountdownEvent::signal(int sig) {
return;
}
LOG_IF(ERROR, prev < sig) << "Counter is over decreased";
- butex_wake_all(saved_butex);
+ butex_wake_all(saved_butex, true);
Review Comment:
这里修改了框架的默认行为了，是不是不太合适
可以给signal函数也加个nosched参数？
##########
src/bthread/butex.cpp:
##########
@@ -335,13 +347,18 @@ int butex_wake_all(void* arg) {
g->ready_to_run_general(w->tid, true);
++nwakeup;
}
- if (saved_nwakeup != nwakeup) {
+ if (nosignal) {
+ tls_task_group_nosignal = g;
+ nwakeup = 0;
+ } else if (saved_nwakeup != nwakeup) {
g->flush_nosignal_tasks_general();
}
- if (g == tls_task_group) {
- TaskGroup::exchange(&g, next->tid);
- } else {
- g->ready_to_run_remote(next->tid);
+ if (!nosched) {
+ if (g == tls_task_group) {
+ TaskGroup::exchange(&g, next->tid);
Review Comment:
这里是不是也要传nosignal
##########
src/bthread/butex.cpp:
##########
@@ -284,15 +286,19 @@ int butex_wake(void* arg, bool nosched) {
if (!nosched) {
TaskGroup::exchange(&g, bbw->tid);
Review Comment:
exchange是不是也要传nosignal参数进去
##########
src/bthread/butex.cpp:
##########
@@ -319,11 +329,13 @@ int butex_wake_all(void* arg) {
return nwakeup;
}
// We will exchange with first waiter in the end.
- ButexBthreadWaiter* next = static_cast<ButexBthreadWaiter*>(
- bthread_waiters.head()->value());
- next->RemoveFromList();
- unsleep_if_necessary(next, get_global_timer_thread());
- ++nwakeup;
+ ButexBthreadWaiter* next =
+ static_cast<ButexBthreadWaiter*>(bthread_waiters.head()->value());
+ if (!nosched) {
+ next->RemoveFromList();
+ unsleep_if_necessary(next, get_global_timer_thread());
+ ++nwakeup;
+ }
TaskGroup* g = get_task_group(next->control);
Review Comment:
这里可能要先判断一下，如果nosignal且tls_task_group_nosignal不为空，则g = tls_task_group_nosignal
##########
src/bthread/butex.cpp:
##########
@@ -335,13 +347,18 @@ int butex_wake_all(void* arg) {
g->ready_to_run_general(w->tid, true);
++nwakeup;
}
- if (saved_nwakeup != nwakeup) {
+ if (nosignal) {
+ tls_task_group_nosignal = g;
+ nwakeup = 0;
+ } else if (saved_nwakeup != nwakeup) {
g->flush_nosignal_tasks_general();
}
- if (g == tls_task_group) {
- TaskGroup::exchange(&g, next->tid);
- } else {
- g->ready_to_run_remote(next->tid);
+ if (!nosched) {
+ if (g == tls_task_group) {
+ TaskGroup::exchange(&g, next->tid);
+ } else {
+ g->ready_to_run_remote(next->tid);
Review Comment:
同上
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