retrace: Set Windows timer resolution period to minimum.

apitrace · May 21, 2015 · 1a0bd52 · 1a0bd52
1 parent deb1d68
commit 1a0bd52
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Showing 2 changed files with 17 additions and 1 deletion.
diff --git a/retrace/CMakeLists.txt b/retrace/CMakeLists.txt
@@ -54,7 +54,7 @@ if (NOT ANDROID AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
     target_link_libraries (retrace_common rt)
 endif ()
 if (WIN32)
-    target_link_libraries (retrace_common dxerr)
+    target_link_libraries (retrace_common dxerr winmm)
 endif ()
 
 

diff --git a/retrace/retrace_main.cpp b/retrace/retrace_main.cpp
@@ -862,6 +862,16 @@ int main(int argc, char **argv)
     }
 #endif
 
+#ifdef _WIN32
+    // Set Windows timer resolution to the minimum period supported by the
+    // system
+    TIMECAPS tc;
+    MMRESULT mmRes = timeGetDevCaps(&tc, sizeof tc);
+    if (mmRes == MMSYSERR_NOERROR) {
+        mmRes = timeBeginPeriod(tc.wPeriodMin);
+    }
+#endif
+
     retrace::setUp();
     if (retrace::profiling) {
         retrace::profiler.setup(retrace::profilingCpuTimes, retrace::profilingGpuTimes, retrace::profilingPixelsDrawn, retrace::profilingMemoryUsage);
@@ -884,6 +894,12 @@ int main(int argc, char **argv)
     // XXX: X often hangs on XCloseDisplay
     //retrace::cleanUp();
 
+#ifdef _WIN32
+    if (mmRes == MMSYSERR_NOERROR) {
+        timeEndPeriod(tc.wPeriodMin);
+    }
+#endif
+
     return 0;
 }