mirror of
https://github.com/yse/easy_profiler.git
synced 2024-12-25 23:40:51 +08:00
92a5ca4a75
* update copyright * fix css parsing * fix block name search * add matching text highlighing for find results * add calculation of block statistics for selected area * new action: right-click on a block on "Diagram" selects region using left and right bounds of this block * other optimizations
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/**
|
|
Lightweight profiler library for c++
|
|
Copyright(C) 2016-2019 Sergey Yagovtsev, Victor Zarubkin
|
|
|
|
Licensed under either of
|
|
* MIT license (LICENSE.MIT or http://opensource.org/licenses/MIT)
|
|
* Apache License, Version 2.0, (LICENSE.APACHE or http://www.apache.org/licenses/LICENSE-2.0)
|
|
at your option.
|
|
|
|
The MIT License
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
of the Software, and to permit persons to whom the Software is furnished
|
|
to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
|
|
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
|
|
PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
|
|
The Apache License, Version 2.0 (the "License");
|
|
You may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
|
|
**/
|
|
|
|
#ifndef EASY_PROFILER_SPIN_LOCK_H
|
|
#define EASY_PROFILER_SPIN_LOCK_H
|
|
|
|
#define EASY_USE_CRITICAL_SECTION // Use CRITICAL_SECTION instead of std::atomic_flag
|
|
|
|
#if defined(_WIN32) && defined(EASY_USE_CRITICAL_SECTION)
|
|
#include <Windows.h>
|
|
#else
|
|
#include <atomic>
|
|
#endif
|
|
|
|
namespace profiler {
|
|
|
|
#if defined(_WIN32) && defined(EASY_USE_CRITICAL_SECTION)
|
|
// std::atomic_flag on Windows works slower than critical section, so we will use it instead of std::atomic_flag...
|
|
// By the way, Windows critical sections are slower than std::atomic_flag on Unix.
|
|
class spin_lock { CRITICAL_SECTION m_lock; public:
|
|
|
|
void lock() {
|
|
EnterCriticalSection(&m_lock);
|
|
}
|
|
|
|
void unlock() {
|
|
LeaveCriticalSection(&m_lock);
|
|
}
|
|
|
|
spin_lock() {
|
|
InitializeCriticalSection(&m_lock);
|
|
}
|
|
|
|
~spin_lock() {
|
|
DeleteCriticalSection(&m_lock);
|
|
}
|
|
};
|
|
#else
|
|
// std::atomic_flag on Unix works fine and very fast (almost instant!)
|
|
class spin_lock { ::std::atomic_flag m_lock; public:
|
|
|
|
void lock() {
|
|
while (m_lock.test_and_set(::std::memory_order_acquire));
|
|
}
|
|
|
|
void unlock() {
|
|
m_lock.clear(::std::memory_order_release);
|
|
}
|
|
|
|
spin_lock() {
|
|
m_lock.clear();
|
|
}
|
|
};
|
|
#endif
|
|
|
|
template <class T>
|
|
class guard_lock
|
|
{
|
|
T& m_lock;
|
|
bool m_isLocked = false;
|
|
|
|
public:
|
|
|
|
explicit guard_lock(T& m) : m_lock(m) {
|
|
m_lock.lock();
|
|
m_isLocked = true;
|
|
}
|
|
|
|
~guard_lock() {
|
|
unlock();
|
|
}
|
|
|
|
inline void unlock() {
|
|
if (m_isLocked) {
|
|
m_lock.unlock();
|
|
m_isLocked = false;
|
|
}
|
|
}
|
|
};
|
|
|
|
} // END of namespace profiler.
|
|
|
|
#ifdef EASY_USE_CRITICAL_SECTION
|
|
# undef EASY_USE_CRITICAL_SECTION
|
|
#endif
|
|
|
|
#endif // EASY_PROFILER_SPIN_LOCK_H
|