Add a lock in the UnwindTable class so two Targets won't try
to modify the same UnwindTable object simultaneously. Fix
HistoryThread and HistoryUnwind's mutex lock acqusition to
retain the lock for the duration of the operation instead of
releasing the temporary immediately.
<rdar://problem/17055023>
llvm-svn: 211241
diff --git a/lldb/source/Plugins/Process/Utility/HistoryUnwind.cpp b/lldb/source/Plugins/Process/Utility/HistoryUnwind.cpp
index 4659e48..bf8b3f5 100644
--- a/lldb/source/Plugins/Process/Utility/HistoryUnwind.cpp
+++ b/lldb/source/Plugins/Process/Utility/HistoryUnwind.cpp
@@ -66,7 +66,7 @@
bool
HistoryUnwind::DoGetFrameInfoAtIndex (uint32_t frame_idx, lldb::addr_t& cfa, lldb::addr_t& pc)
{
- Mutex::Locker (m_unwind_mutex);
+ Mutex::Locker locker(m_unwind_mutex);
if (frame_idx < m_pcs.size())
{
cfa = frame_idx;