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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
/*****************************************************************************
*
* $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtSync.h
*
***/
#ifdef PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTSYNC_H
#error "Header $/Plasma20/Sources/Plasma/NucleusLib/pnUtils/Private/pnUtSync.h included more than once"
#endif
#define PLASMA20_SOURCES_PLASMA_NUCLEUSLIB_PNUTILS_PRIVATE_PNUTSYNC_H
/****************************************************************************
*
* Atomic operations
*
***/
// *value += increment; return original value of *value; thread safe
long AtomicAdd (long * value, long increment);
// *value = value; return original value of *value; thread safe
long AtomicSet (long * value, long set);
#define ATOMIC_ONCE(code) { \
static long s_count = 1; \
if (AtomicSet(&s_count, 0)) \
code; \
} //
/****************************************************************************
*
* CLock
* (reader/writer lock)
*
***/
class CLockWaitSet;
class CLock {
private:
CLockWaitSet * m_waitSet;
long m_spinLock;
unsigned m_readerCount;
unsigned m_writerCount;
public:
CLock ();
~CLock ();
void EnterRead ();
void EnterWrite ();
void LeaveRead ();
void LeaveWrite ();
};
/*****************************************************************************
*
* CEvent
*
***/
#ifdef HS_BUILD_FOR_WIN32
typedef HANDLE EventHandle;
#else
# error "CEvent: Not implemented on this platform"
#endif
const unsigned kEventWaitForever = (unsigned)-1;
enum ECEventResetBehavior {
kEventManualReset,
kEventAutoReset,
};
class CEvent {
EventHandle m_handle;
public:
CEvent (
ECEventResetBehavior resetType,
bool initialSet = false
);
~CEvent ();
void Signal ();
void Reset ();
bool Wait (unsigned waitMs);
const EventHandle & Handle () const { return m_handle; }
};