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227 lines
4.5 KiB
C++
227 lines
4.5 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/thread/locks.hpp>
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namespace epee
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{
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class critical_region;
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class critical_section {
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boost::mutex m_section;
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public:
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critical_section( const critical_section& section ) {
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InitializeCriticalSection( &m_section );
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}
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critical_section() {
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InitializeCriticalSection( &m_section );
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}
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~critical_section() {
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DeleteCriticalSection( &m_section );
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}
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void lock() {
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EnterCriticalSection( &m_section );
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}
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void unlock() {
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LeaveCriticalSection( &m_section );
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}
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bool tryLock() {
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return TryEnterCriticalSection( &m_section )? true:false;
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}
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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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class critical_region {
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::critical_section *m_locker;
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critical_region( const critical_region& ){}
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public:
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critical_region(critical_section &cs ) {
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m_locker = &cs;
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cs.lock();
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}
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~critical_region()
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{
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m_locker->unlock();
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}
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};
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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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class event
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{
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public:
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event()
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{
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m_hevent = ::CreateEvent(NULL, FALSE, FALSE, NULL);
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}
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~event()
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{
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::CloseHandle(m_hevent);
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}
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bool set()
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{
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return ::SetEvent(m_hevent) ? true:false;
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}
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bool reset()
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{
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return ::ResetEvent(m_hevent) ? true:false;
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}
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HANDLE get_handle()
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{
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return m_hevent;
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}
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private:
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HANDLE m_hevent;
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};
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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) critical_region critical_region_var(x)
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#define CRITICAL_REGION_BEGIN(x) { critical_region critical_region_var(x)
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#define CRITICAL_REGION_END() }
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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:
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return "UNKNOWN CODE";
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}
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}
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}// namespace epee
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#endif
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