commit d2de53124ec55390ce1ec66fd1fbf28b5a7ec4ec
author Abseil Team <absl-team@google.com> Wed Aug 02 11:40:36 2023 -0700
committer Copybara-Service <copybara-worker@google.com> Wed Aug 02 11:41:25 2023 -0700
tree 27e5a20ebadcda78562404cc4571c3a720b9739d
parent fdf5be1108ada4b5525f48542d5fd76731cb880e

Use a shared (reader) lock in absl_flags::WasPresentOnCommandLine

PiperOrigin-RevId: 553209806
Change-Id: I6828c3a5df1981471bca7f2f6cb16dfd60e77a96

absl/flags/parse.cc

diff --git a/absl/flags/parse.cc b/absl/flags/parse.cc
index 4cdd9d0..526b61d 100644
--- a/absl/flags/parse.cc
+++ b/absl/flags/parse.cc
@@ -637,7 +637,7 @@
 // --------------------------------------------------------------------
 
 bool WasPresentOnCommandLine(absl::string_view flag_name) {
-  absl::MutexLock l(&specified_flags_guard);
+  absl::ReaderMutexLock l(&specified_flags_guard);
   ABSL_INTERNAL_CHECK(specified_flags != nullptr,
                       "ParseCommandLine is not invoked yet");