Add new CefNowFromSystemTraceTime() method (issue #908).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1147 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/capi/cef_trace_capi.h

@@ -90,6 +90,13 @@ CEF_EXPORT int cef_get_trace_buffer_percent_full_async();
 ///
 CEF_EXPORT int cef_end_tracing_async();
 
+///
+// Returns the current system trace time or, if none is defined, the current
+// high-res time. Can be used by clients to synchronize with the time
+// information in trace events.
+///
+CEF_EXPORT int64 cef_now_from_system_trace_time();
+
 ///
 // Implement this structure to receive trace notifications. The functions of
 // this structure will be called on the browser process UI thread.

include/cef_trace.h

@@ -121,4 +121,12 @@ bool CefGetTraceBufferPercentFullAsync();
 /*--cef()--*/
 bool CefEndTracingAsync();
 
+///
+// Returns the current system trace time or, if none is defined, the current
+// high-res time. Can be used by clients to synchronize with the time
+// information in trace events.
+///
+/*--cef()--*/
+int64 CefNowFromSystemTraceTime();
+
 #endif  // CEF_INCLUDE_CEF_TRACE_H_

libcef/browser/trace_impl.cc

@@ -9,6 +9,7 @@
 #include "libcef/browser/thread_util.h"
 
 #include "base/debug/trace_event.h"
+#include "base/time.h"
 
 bool CefBeginTracing(CefRefPtr<CefTraceClient> client,
                      const CefString& categories) {
@@ -65,6 +66,9 @@ bool CefEndTracingAsync() {
   return subscriber->EndTracingAsync();
 }
 
+int64 CefNowFromSystemTraceTime() {
+  return base::TimeTicks::NowFromSystemTraceTime().ToInternalValue();
+}
 
 // The below functions can be called from any process.
 

libcef_dll/libcef_dll.cc

@@ -492,6 +492,16 @@ CEF_EXPORT int cef_end_tracing_async() {
   return _retval;
 }
 
+CEF_EXPORT int64 cef_now_from_system_trace_time() {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  int64 _retval = CefNowFromSystemTraceTime();
+
+  // Return type: simple
+  return _retval;
+}
+
 CEF_EXPORT int cef_parse_url(const cef_string_t* url,
     struct _cef_urlparts_t* parts) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING

libcef_dll/wrapper/libcef_dll_wrapper.cc

@@ -475,6 +475,16 @@ CEF_GLOBAL bool CefEndTracingAsync() {
   return _retval?true:false;
 }
 
+CEF_GLOBAL int64 CefNowFromSystemTraceTime() {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  // Execute
+  int64 _retval = cef_now_from_system_trace_time();
+
+  // Return type: simple
+  return _retval;
+}
+
 CEF_GLOBAL bool CefParseURL(const CefString& url, CefURLParts& parts) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
 

tests/unittests/tracing_unittest.cc

@@ -398,3 +398,9 @@ TRACING_TEST(TraceEventAsyncEnd0, CEF_TRACE_EVENT_ASYNC_END0);
 TRACING_TEST(TraceEventAsyncEnd1, CEF_TRACE_EVENT_ASYNC_END1);
 TRACING_TEST(TraceEventAsyncEnd2, CEF_TRACE_EVENT_ASYNC_END2);
 TRACING_TEST(TraceEventCopyAsyncEnd0, CEF_TRACE_EVENT_COPY_ASYNC_END0);
+
+
+TEST(TracingTest, NowFromSystemTraceTime) {
+  int64 val = CefNowFromSystemTraceTime();
+  EXPECT_NE(val, 0);
+}