Add API functions to control Quantify, as well as expose these

functions to javascript. 


Review URL: http://codereview.chromium.org/40255

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11291 0039d316-1c4b-4281-b951-d872f2087c98

5 files changed, 96 insertions, 0 deletions

diff --git a/base/base.gyp b/base/base.gyp
index e647911..97b9e45 100644
--- a/base/base.gyp
+++ b/base/base.gyp
@@ -167,6 +167,8 @@
         'platform_thread_posix.cc',
         'platform_thread_win.cc',
         'port.h',
+        'profiler.cc',
+        'profiler.h',
         'process.h',
         'process_posix.cc',
         'process_util.h',
diff --git a/base/base.scons b/base/base.scons
index dcc524d..485dd13 100644
--- a/base/base.scons
+++ b/base/base.scons
@@ -160,6 +160,8 @@ input_files = ChromeFileList([
     'platform_thread.h',
     'platform_thread_win.cc',
     'port.h',
+    'profiler.cc',
+    'profiler.h',
     'third_party/nspr/prcpucfg.h',
     'third_party/nspr/prcpucfg_win.h',
     'process.h',
diff --git a/base/build/base.vcproj b/base/build/base.vcproj
index b31949f..cecff6e 100644
--- a/base/build/base.vcproj
+++ b/base/build/base.vcproj
@@ -630,6 +630,14 @@
 			>
 		</File>
 		<File
+			RelativePath="..\profiler.cc"
+			>
+		</File>
+		<File
+			RelativePath="..\profiler.h"
+			>
+		</File>
+		<File
 			RelativePath="..\third_party\nspr\prtime.cc"
 			>
 		</File>
diff --git a/base/profiler.cc b/base/profiler.cc
new file mode 100644
index 0000000..3f19597
--- /dev/null
+++ b/base/profiler.cc
@@ -0,0 +1,45 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/profiler.h"
+#include "base/string_util.h"
+
+#ifdef PURIFY
+// this #define is used to prevent people from directly using pure.h
+// instead of profiler.h
+#define PURIFY_PRIVATE_INCLUDE
+#include "base/third_party/purify/pure.h"
+#endif
+
+namespace base {
+
+void Profiler::StartRecording() {
+#ifdef PURIFY
+  QuantifyStartRecordingData();
+#endif
+}
+
+void Profiler::StopRecording() {
+#ifdef PURIFY
+  QuantifyStopRecordingData();
+#endif
+}
+
+void Profiler::ClearData() {
+#ifdef PURIFY
+  QuantifyClearData();
+#endif
+}
+
+void Profiler::SetThreadName(const char *name) {
+#ifdef PURIFY
+  // make a copy since the Quantify function takes a char*, not const char*
+  char buffer[512];
+  base::snprintf(buffer, sizeof(buffer)-1, "%s", name);
+  QuantifySetThreadName(buffer);
+#endif
+}
+
+}  // namespace base
+
diff --git a/base/profiler.h b/base/profiler.h
new file mode 100644
index 0000000..6882c02
--- /dev/null
+++ b/base/profiler.h
@@ -0,0 +1,39 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// An abstraction for functions used to control execution time profiling.
+// All methods are effectively no-ops unless this program is being run through
+// a supported tool (currently only Quantify, a companion tool to Purify)
+
+#ifndef BASE_PROFILER_H__
+#define BASE_PROFILER_H__
+
+#include "base/basictypes.h"
+
+namespace base {
+
+class Profiler {
+ public:
+  // Starts or resumes recording.
+  static void StartRecording();
+
+  // Stops recording until StartRecording is called or the program exits.
+  static void StopRecording();
+
+  // Throw away data collected so far. This can be useful to call before
+  // your first call to StartRecording, for instance to avoid counting any
+  // time in application startup.
+  static void ClearData();
+
+  // Sets the name of the current thread for display in the profiler's UI.
+  static void SetThreadName(const char *name);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Profiler);
+};
+
+}  // namespace base
+
+#endif  // BASE_PROFILER_H__
+