1 files changed, 10 insertions, 9 deletions
diff --git a/Source/Core/Common/Profiler.cpp b/Source/Core/Common/Profiler.cpp
index f3903629e6..34aafd38fd 100644
--- a/Source/Core/Common/Profiler.cpp
+++ b/Source/Core/Common/Profiler.cpp
@@ -29,10 +29,8 @@ std::string Profiler::s_lazy_result;
 int Profiler::s_lazy_delay = 0;
 
 Profiler::Profiler(const std::string& name)
-    : m_name(name), m_usecs(0), m_usecs_min(UINT64_MAX), m_usecs_max(0), m_usecs_quad(0),
-      m_calls(0), m_depth(0)
+    : m_name(name), m_usecs(0), m_usecs_min(UINT64_MAX), m_usecs_max(0), m_usecs_quad(0), m_calls(0)
 {
-  m_time = Common::Timer::NowUs();
   s_max_length = std::max<u32>(s_max_length, u32(m_name.length()));
 
   std::lock_guard<std::mutex> lk(s_mutex);
@@ -97,22 +95,23 @@ std::string Profiler::ToString()
   return s_lazy_result;
 }
 
-void Profiler::Start()
+void Profiler::Start(u64* time, int* depth)
 {
-  if (!m_depth++)
+  if ((*depth)++ == 0)
   {
-    m_time = Common::Timer::NowUs();
+    *time = Common::Timer::NowUs();
   }
 }
 
-void Profiler::Stop()
+void Profiler::Stop(u64* time, int* depth)
 {
-  if (!--m_depth)
+  if (--(*depth) == 0)
   {
     u64 end = Common::Timer::NowUs();
 
-    u64 diff = end - m_time;
+    u64 diff = end - *time;
 
+    std::lock_guard lk(m_mutex);
     m_usecs += diff;
     m_usecs_min = std::min(m_usecs_min, diff);
     m_usecs_max = std::max(m_usecs_max, diff);
@@ -123,6 +122,8 @@ void Profiler::Stop()
 
 std::string Profiler::Read()
 {
+  std::lock_guard lk(m_mutex);
+
   double avg = 0;
   double stdev = 0;
   double time_rel = 0;