| /* |
| * Copyright 2011, The Android Open Source Project |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef PerformanceMonitor_h |
| #define PerformanceMonitor_h |
| |
| #include "config.h" |
| |
| #include <wtf/HashMap.h> |
| #include <wtf/text/StringHash.h> |
| #include <sys/time.h> |
| #include <unistd.h> |
| |
| namespace WebCore { |
| |
| struct PerfItem { |
| PerfItem() : average_ms(0), start_time() {} |
| float average_ms; |
| struct timeval start_time; |
| }; |
| |
| class PerformanceMonitor { |
| public: |
| PerformanceMonitor(); |
| virtual ~PerformanceMonitor(); |
| void start(const String &tag); |
| void stop(const String &tag); |
| float getAverageDuration(const String &tag); |
| void display(int limit); |
| |
| private: |
| HashMap<String, PerfItem*, StringHash> m_tags; |
| }; |
| |
| } |
| |
| #endif // PerformanceMonitor_h |