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253 lines
6 KiB
C++
253 lines
6 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef __WINH_OBJ_H__
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#define __WINH_OBJ_H__
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#include <boost/chrono/duration.hpp>
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#include <boost/thread/locks.hpp>
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#include <boost/thread/mutex.hpp>
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#include <boost/thread/recursive_mutex.hpp>
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#include <boost/thread/v2/thread.hpp>
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namespace epee
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{
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namespace debug
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{
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inline unsigned int &g_test_dbg_lock_sleep()
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{
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static unsigned int value = 0;
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return value;
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}
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}
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struct simple_event
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{
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simple_event() : m_rised(false)
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{
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}
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void raise()
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{
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boost::unique_lock<boost::mutex> lock(m_mx);
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m_rised = true;
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m_cond_var.notify_one();
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}
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void wait()
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{
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boost::unique_lock<boost::mutex> lock(m_mx);
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while (!m_rised)
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m_cond_var.wait(lock);
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m_rised = false;
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}
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private:
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boost::mutex m_mx;
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boost::condition_variable m_cond_var;
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bool m_rised;
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};
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class critical_region;
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class critical_section
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{
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boost::recursive_mutex m_section;
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public:
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//to make copy fake!
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critical_section(const critical_section& section)
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{
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}
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critical_section()
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{
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}
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~critical_section()
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{
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}
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void lock()
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{
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m_section.lock();
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//EnterCriticalSection( &m_section );
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}
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void unlock()
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{
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m_section.unlock();
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}
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bool tryLock()
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{
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return m_section.try_lock();
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}
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// to make copy fake
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critical_section& operator=(const critical_section& section)
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{
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return *this;
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}
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};
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template<class t_lock>
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class critical_region_t
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{
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t_lock& m_locker;
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bool m_unlocked;
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critical_region_t(const critical_region_t&) {}
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public:
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critical_region_t(t_lock& cs): m_locker(cs), m_unlocked(false)
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{
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m_locker.lock();
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}
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~critical_region_t()
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{
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unlock();
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}
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void unlock()
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{
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if (!m_unlocked)
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{
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m_locker.unlock();
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m_unlocked = true;
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}
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}
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};
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#if defined(WINDWOS_PLATFORM)
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class shared_critical_section
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{
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public:
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shared_critical_section()
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{
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::InitializeSRWLock(&m_srw_lock);
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}
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~shared_critical_section()
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{}
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bool lock_shared()
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{
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AcquireSRWLockShared(&m_srw_lock);
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return true;
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}
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bool unlock_shared()
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{
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ReleaseSRWLockShared(&m_srw_lock);
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return true;
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}
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bool lock_exclusive()
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{
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::AcquireSRWLockExclusive(&m_srw_lock);
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return true;
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}
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bool unlock_exclusive()
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{
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::ReleaseSRWLockExclusive(&m_srw_lock);
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return true;
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}
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private:
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SRWLOCK m_srw_lock;
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};
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class shared_guard
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{
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public:
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shared_guard(shared_critical_section& ref_sec):m_ref_sec(ref_sec)
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{
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m_ref_sec.lock_shared();
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}
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~shared_guard()
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{
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m_ref_sec.unlock_shared();
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}
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private:
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shared_critical_section& m_ref_sec;
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};
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class exclusive_guard
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{
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public:
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exclusive_guard(shared_critical_section& ref_sec):m_ref_sec(ref_sec)
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{
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m_ref_sec.lock_exclusive();
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}
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~exclusive_guard()
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{
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m_ref_sec.unlock_exclusive();
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}
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private:
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shared_critical_section& m_ref_sec;
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};
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#endif
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#define SHARED_CRITICAL_REGION_BEGIN(x) { shared_guard critical_region_var(x)
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#define EXCLUSIVE_CRITICAL_REGION_BEGIN(x) { exclusive_guard critical_region_var(x)
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#define CRITICAL_REGION_LOCAL(x) {boost::this_thread::sleep_for(boost::chrono::milliseconds(epee::debug::g_test_dbg_lock_sleep()));} epee::critical_region_t<decltype(x)> critical_region_var(x)
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#define CRITICAL_REGION_BEGIN(x) { boost::this_thread::sleep_for(boost::chrono::milliseconds(epee::debug::g_test_dbg_lock_sleep())); epee::critical_region_t<decltype(x)> critical_region_var(x)
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#define CRITICAL_REGION_LOCAL1(x) {boost::this_thread::sleep_for(boost::chrono::milliseconds(epee::debug::g_test_dbg_lock_sleep()));} epee::critical_region_t<decltype(x)> critical_region_var1(x)
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#define CRITICAL_REGION_BEGIN1(x) { boost::this_thread::sleep_for(boost::chrono::milliseconds(epee::debug::g_test_dbg_lock_sleep())); epee::critical_region_t<decltype(x)> critical_region_var1(x)
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#define CRITICAL_REGION_END() }
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#if defined(WINDWOS_PLATFORM)
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inline const char* get_wait_for_result_as_text(DWORD res)
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{
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switch(res)
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{
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case WAIT_ABANDONED: return "WAIT_ABANDONED";
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case WAIT_TIMEOUT: return "WAIT_TIMEOUT";
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case WAIT_OBJECT_0: return "WAIT_OBJECT_0";
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case WAIT_OBJECT_0+1: return "WAIT_OBJECT_1";
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case WAIT_OBJECT_0+2: return "WAIT_OBJECT_2";
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default: return "UNKNOWN CODE";
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}
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}
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#endif
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}
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#endif
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