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task: add more Doxygen comments for PairLock

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I need to remind myself why it's there, and not just std::lock.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>
This commit is contained in:
Zygo Blaxell 2022-11-19 18:03:29 -05:00
parent dc2dc8d08a
commit cdef59e2f3
1 changed files with 2 additions and 1 deletions
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3
lib/task.cc
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@ -30,7 +30,8 @@ namespace crucible {
static thread_local TaskStatePtr tl_current_task;
/// because we don't want to bump -std=c++-17 just to get scoped_lock
/// because we don't want to bump -std=c++-17 just to get scoped_lock.
/// Also we don't want to self-deadlock if both mutexes are the same mutex.
class PairLock {
unique_lock<mutex> m_lock1, m_lock2;
public: