diff options
Diffstat (limited to 'lldb/source/Core/Timer.cpp')
| -rw-r--r-- | lldb/source/Core/Timer.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/lldb/source/Core/Timer.cpp b/lldb/source/Core/Timer.cpp index 7a6e5de75cf..73175988753 100644 --- a/lldb/source/Core/Timer.cpp +++ b/lldb/source/Core/Timer.cpp @@ -39,7 +39,18 @@ namespace std::atomic<bool> Timer::g_quiet(true); std::atomic<unsigned> Timer::g_display_depth(0); -std::mutex Timer::g_file_mutex; +static std::mutex & +GetFileMutex() +{ + static std::mutex *g_file_mutex_ptr = nullptr; + static std::once_flag g_once_flag; + std::call_once(g_once_flag, []() { + // leaked on purpose to ensure this mutex works after main thread has run + // global C++ destructor chain + g_file_mutex_ptr = new std::mutex(); + }); + return *g_file_mutex_ptr; +} static Mutex & @@ -97,7 +108,7 @@ Timer::Timer (const char *category, const char *format, ...) : { if (g_quiet == false) { - std::lock_guard<std::mutex> lock(g_file_mutex); + std::lock_guard<std::mutex> lock(GetFileMutex()); // Indent ::fprintf(stdout, "%*s", stack->m_depth * TIMER_INDENT_AMOUNT, ""); @@ -152,7 +163,7 @@ Timer::~Timer() if (g_quiet == false) { - std::lock_guard<std::mutex> lock(g_file_mutex); + std::lock_guard<std::mutex> lock(GetFileMutex()); ::fprintf(stdout, "%*s%.9f sec (%.9f sec)\n", (stack->m_depth - 1) * TIMER_INDENT_AMOUNT, "", total_nsec / 1000000000.0, timer_nsec / 1000000000.0); } |
