diff options
| author | Nat Goodspeed <nat@lindenlab.com> | 2019-12-03 11:33:55 -0500 |
|---|---|---|
| committer | Nat Goodspeed <nat@lindenlab.com> | 2020-03-25 15:28:17 -0400 |
| commit | 7a09a5391ac5172470eb6597f08b24cd5965e9ac (patch) | |
| tree | cc42f0f2452214ac06d9c9863138045cd2e18311 | |
| parent | b22f89c9fa9e6ee95b552b27808df77f710caad6 (diff) | |
DRTVWR-494: Add on_main_thread(), sibling to assert_main_thread().
| -rw-r--r-- | indra/llcommon/llthread.cpp | 28 | ||||
| -rw-r--r-- | indra/llcommon/llthread.h | 3 |
2 files changed, 25 insertions, 6 deletions
diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp index a4171729db..f875e4e0dc 100644 --- a/indra/llcommon/llthread.cpp +++ b/indra/llcommon/llthread.cpp @@ -97,14 +97,34 @@ U32 LL_THREAD_LOCAL sThreadID = 0; U32 LLThread::sIDIter = 0; +namespace +{ + + U32 main_thread() + { + // Using a function-static variable to identify the main thread + // requires that control reach here from the main thread before it + // reaches here from any other thread. We simply trust that whichever + // thread gets here first is the main thread. + static U32 s_thread_id = LLThread::currentID(); + return s_thread_id; + } + +} // anonymous namespace + +LL_COMMON_API bool on_main_thread() +{ + return (LLThread::currentID() == main_thread()); +} LL_COMMON_API void assert_main_thread() { - static U32 s_thread_id = LLThread::currentID(); - if (LLThread::currentID() != s_thread_id) + auto curr = LLThread::currentID(); + auto main = main_thread(); + if (curr != main) { - LL_WARNS() << "Illegal execution from thread id " << (S32) LLThread::currentID() - << " outside main thread " << (S32) s_thread_id << LL_ENDL; + LL_WARNS() << "Illegal execution from thread id " << curr + << " outside main thread " << main << LL_ENDL; } } diff --git a/indra/llcommon/llthread.h b/indra/llcommon/llthread.h index 863c9051f3..37f6e66bbb 100644 --- a/indra/llcommon/llthread.h +++ b/indra/llcommon/llthread.h @@ -34,8 +34,6 @@ #include "llrefcount.h" #include <thread> -LL_COMMON_API void assert_main_thread(); - namespace LLTrace { class ThreadRecorder; @@ -168,5 +166,6 @@ public: //============================================================================ extern LL_COMMON_API void assert_main_thread(); +extern LL_COMMON_API bool on_main_thread(); #endif // LL_LLTHREAD_H |