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Posted to dev@brpc.apache.org by GitBox <gi...@apache.org> on 2020/09/21 01:59:21 UTC
[GitHub] [incubator-brpc] brokensword2018 opened a new issue #1249: 关于is_current_pthread_task 这个函数的疑问
brokensword2018 opened a new issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249
Dear all.
```cpp
// True iff current task is the one running run_main_task()
bool is_current_main_task() const { return current_tid() == _main_tid; }
// True iff current task is in pthread-mode.
bool is_current_pthread_task() const
{ return _cur_meta->stack == _main_stack; }
```
每个worker线程应该都是执行，run_main_task. current_tid() == _main_tid 不是和 _cur_meta->stack == _main_stack等效的吗？ True iff current task is in pthread-mode这句话不是很理解。
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[GitHub] [incubator-brpc] brokensword2018 removed a comment on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 removed a comment on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696740413
> 两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
非常感谢
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[GitHub] [incubator-brpc] brokensword2018 commented on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 commented on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696740413
> 两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
非常感谢
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[GitHub] [incubator-brpc] brokensword2018 commented on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 commented on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696740413
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[GitHub] [incubator-brpc] brokensword2018 commented on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 commented on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696743267
> 两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
非常感谢
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[GitHub] [incubator-brpc] gydong commented on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
gydong commented on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696561662
两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
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[GitHub] [incubator-brpc] gydong commented on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
gydong commented on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696561662
两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
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[GitHub] [incubator-brpc] brokensword2018 closed issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 closed issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249
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[GitHub] [incubator-brpc] brokensword2018 removed a comment on issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 removed a comment on issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249#issuecomment-696740413
> 两个条件不等价， _cur_meta->stack == _main_stack 成立的时候，current_tid() == _main_tid 不一定成立。有些情况下bthread会复用main task 的堆栈，可以读一下ending_sched这个函数的源码理解一下
非常感谢
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[GitHub] [incubator-brpc] brokensword2018 closed issue #1249: 关于is_current_pthread_task 这个函数的疑问
Posted by GitBox <gi...@apache.org>.
brokensword2018 closed issue #1249:
URL: https://github.com/apache/incubator-brpc/issues/1249
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