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From: Michael Froman <mfroman@mozilla.com>
Date: Fri, 9 Jul 2021 18:14:00 -0500
Subject: Bug 1654112 - mutex changes to fix tsan errors. r=ng
Differential Revision: https://phabricator.services.mozilla.com/D119674
Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/3d5503acf9a4b22e02c4300f29e4fbfed406ea2c
---
rtc_base/logging.cc | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/rtc_base/logging.cc b/rtc_base/logging.cc
index f8ff475e5d..91bc47c6fe 100644
--- a/rtc_base/logging.cc
+++ b/rtc_base/logging.cc
@@ -275,8 +275,8 @@ void LogMessage::LogTimestamps(bool on) {
}
void LogMessage::LogToDebug(LoggingSeverity min_sev) {
- g_dbg_sev = min_sev;
webrtc::MutexLock lock(&GetLoggingLock());
+ g_dbg_sev = min_sev;
UpdateMinLogSeverity();
}
@@ -460,6 +460,9 @@ void LogMessage::OutputToDebug(const LogLineRef& log_line) {
// static
bool LogMessage::IsNoop(LoggingSeverity severity) {
+ // Added MutexLock to fix tsan warnings on accessing g_dbg_sev. (mjf)
+ // See https://bugs.chromium.org/p/chromium/issues/detail?id=1228729
+ webrtc::MutexLock lock(&GetLoggingLock());
if (severity >= g_dbg_sev || severity >= g_min_sev)
return false;
return streams_empty_.load(std::memory_order_relaxed);
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