mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-12-02 17:02:17 +00:00
450 lines
11 KiB
C++
450 lines
11 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 BFG Edition GPL Source Code
|
|
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
|
|
Copyright (C) 2012 Robert Beckebans
|
|
|
|
This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
|
|
|
|
Doom 3 BFG Edition Source Code 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.
|
|
|
|
Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code. If not, please request a copy in writing from id Software at the address below.
|
|
|
|
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
|
|
|
===========================================================================
|
|
*/
|
|
#pragma hdrstop
|
|
#include "../../precompiled.h"
|
|
|
|
|
|
//#define DEBUG_THREADS
|
|
|
|
typedef void* ( *pthread_function_t )( void* );
|
|
|
|
/*
|
|
========================
|
|
Sys_Createthread
|
|
========================
|
|
*/
|
|
uintptr_t Sys_CreateThread( xthread_t function, void* parms, xthreadPriority priority, const char* name, core_t core, int stackSize, bool suspended )
|
|
{
|
|
//Sys_EnterCriticalSection();
|
|
|
|
pthread_attr_t attr;
|
|
pthread_attr_init( &attr );
|
|
|
|
if( pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_JOINABLE ) != 0 )
|
|
{
|
|
idLib::common->FatalError( "ERROR: pthread_attr_setdetachstate %s failed\n", name );
|
|
return ( uintptr_t )0;
|
|
}
|
|
|
|
pthread_t handle;
|
|
if( pthread_create( ( pthread_t* )&handle, &attr, ( pthread_function_t )function, parms ) != 0 )
|
|
{
|
|
idLib::common->FatalError( "ERROR: pthread_create %s failed\n", name );
|
|
return ( uintptr_t )0;
|
|
}
|
|
pthread_attr_destroy( &attr );
|
|
|
|
// RB: TODO pthread_setname_np is different on Linux, MacOSX and other systems
|
|
#if defined(DEBUG_THREADS)
|
|
if( pthread_setname_np( handle, name ) != 0 )
|
|
{
|
|
idLib::common->FatalError( "ERROR: pthread_setname_np %s failed\n", name );
|
|
return ( uintptr_t )0;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
TODO RB: support thread priorities?
|
|
|
|
if( priority == THREAD_HIGHEST )
|
|
{
|
|
SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_HIGHEST ); // we better sleep enough to do this
|
|
}
|
|
else if( priority == THREAD_ABOVE_NORMAL )
|
|
{
|
|
SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_ABOVE_NORMAL );
|
|
}
|
|
else if( priority == THREAD_BELOW_NORMAL )
|
|
{
|
|
SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_BELOW_NORMAL );
|
|
}
|
|
else if( priority == THREAD_LOWEST )
|
|
{
|
|
SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_LOWEST );
|
|
}
|
|
*/
|
|
|
|
// Under Linux, we don't set the thread affinity and let the OS deal with scheduling
|
|
|
|
return ( uintptr_t )handle;
|
|
}
|
|
|
|
|
|
/*
|
|
========================
|
|
Sys_GetCurrentThreadID
|
|
========================
|
|
*/
|
|
uintptr_t Sys_GetCurrentThreadID()
|
|
{
|
|
return pthread_self();
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_DestroyThread
|
|
========================
|
|
*/
|
|
void Sys_DestroyThread( uintptr_t threadHandle )
|
|
{
|
|
if( threadHandle == 0 )
|
|
{
|
|
return;
|
|
}
|
|
|
|
char name[128];
|
|
name[0] = '\0';
|
|
|
|
#if defined(DEBUG_THREADS)
|
|
pthread_getname_np( threadHandle, name, sizeof( name ) );
|
|
#endif
|
|
|
|
#if 0 //!defined(__ANDROID__)
|
|
if( pthread_cancel( ( pthread_t )threadHandle ) != 0 )
|
|
{
|
|
idLib::common->FatalError( "ERROR: pthread_cancel %s failed\n", name );
|
|
}
|
|
#endif
|
|
|
|
if( pthread_join( ( pthread_t )threadHandle, NULL ) != 0 )
|
|
{
|
|
idLib::common->FatalError( "ERROR: pthread_join %s failed\n", name );
|
|
}
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_Yield
|
|
========================
|
|
*/
|
|
void Sys_Yield()
|
|
{
|
|
pthread_yield();
|
|
}
|
|
|
|
/*
|
|
================================================================================================
|
|
|
|
Signal
|
|
|
|
================================================================================================
|
|
*/
|
|
|
|
idSysSignal::idSysSignal( bool manualReset )
|
|
{
|
|
#if 0
|
|
pthread_mutexattr_t attr;
|
|
|
|
pthread_mutexattr_init( &attr );
|
|
pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_ERRORCHECK );
|
|
//pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_DEFAULT );
|
|
pthread_mutex_init( &mutex, &attr );
|
|
pthread_mutexattr_destroy( &attr );
|
|
#else
|
|
pthread_mutex_init( &mutex, NULL );
|
|
#endif
|
|
|
|
pthread_cond_init( &cond, NULL );
|
|
|
|
signaled = false;
|
|
signalCounter = 0;
|
|
waiting = false;
|
|
this->manualReset = manualReset;
|
|
}
|
|
|
|
idSysSignal::~idSysSignal()
|
|
{
|
|
pthread_cond_destroy( &cond );
|
|
pthread_mutex_destroy( &mutex );
|
|
}
|
|
|
|
void idSysSignal::Raise()
|
|
{
|
|
pthread_mutex_lock( &mutex );
|
|
|
|
//if( waiting )
|
|
{
|
|
//pthread_cond_signal( &cond );
|
|
//pthread_cond_broadcast( &cond );
|
|
}
|
|
//else
|
|
if( !signaled )
|
|
{
|
|
// emulate Windows behaviour: if no thread is waiting, leave the signal on so next wait keeps going
|
|
signaled = true;
|
|
signalCounter++;
|
|
|
|
pthread_cond_signal( &cond );
|
|
//pthread_cond_broadcast( &cond );
|
|
}
|
|
|
|
pthread_mutex_unlock( &mutex );
|
|
}
|
|
|
|
void idSysSignal::Clear()
|
|
{
|
|
pthread_mutex_lock( &mutex );
|
|
|
|
signaled = false;
|
|
|
|
pthread_mutex_unlock( &mutex );
|
|
}
|
|
|
|
// Wait returns true if the object is in a signalled state and
|
|
// returns false if the wait timed out. Wait also clears the signalled
|
|
// state when the signalled state is reached within the time out period.
|
|
bool idSysSignal::Wait( int timeout )
|
|
{
|
|
pthread_mutex_lock( &mutex );
|
|
|
|
int result = 0;
|
|
|
|
#if 1
|
|
assert( !waiting ); // WaitForEvent from multiple threads? that wouldn't be good
|
|
|
|
if( signaled )
|
|
{
|
|
if( !manualReset )
|
|
{
|
|
// emulate Windows behaviour: signal has been raised already. clear and keep going
|
|
signaled = false;
|
|
result = 0;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
|
|
#if 0
|
|
|
|
int signalValue = signalCounter;
|
|
//while( !signaled && signalValue == signalCounter )
|
|
#endif
|
|
{
|
|
waiting = true;
|
|
|
|
if( timeout == WAIT_INFINITE )
|
|
{
|
|
result = pthread_cond_wait( &cond, &mutex );
|
|
|
|
assert( result == 0 );
|
|
}
|
|
else
|
|
{
|
|
timespec ts;
|
|
clock_gettime( CLOCK_REALTIME, &ts );
|
|
|
|
ts.tv_nsec += ( timeout * 1000000 );
|
|
|
|
result = pthread_cond_timedwait( &cond, &mutex, &ts );
|
|
|
|
assert( result == 0 || ( timeout != idSysSignal::WAIT_INFINITE && result == ETIMEDOUT ) );
|
|
}
|
|
|
|
waiting = false;
|
|
}
|
|
|
|
if( !manualReset )
|
|
{
|
|
signaled = false;
|
|
}
|
|
}
|
|
|
|
pthread_mutex_unlock( &mutex );
|
|
|
|
return ( result == 0 );
|
|
}
|
|
/*
|
|
================================================================================================
|
|
|
|
Mutex
|
|
|
|
================================================================================================
|
|
*/
|
|
|
|
/*
|
|
========================
|
|
Sys_MutexCreate
|
|
========================
|
|
*/
|
|
void Sys_MutexCreate( mutexHandle_t& handle )
|
|
{
|
|
pthread_mutexattr_t attr;
|
|
|
|
pthread_mutexattr_init( &attr );
|
|
pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_ERRORCHECK );
|
|
pthread_mutex_init( &handle, &attr );
|
|
|
|
pthread_mutexattr_destroy( &attr );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_MutexDestroy
|
|
========================
|
|
*/
|
|
void Sys_MutexDestroy( mutexHandle_t& handle )
|
|
{
|
|
pthread_mutex_destroy( &handle );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_MutexLock
|
|
========================
|
|
*/
|
|
bool Sys_MutexLock( mutexHandle_t& handle, bool blocking )
|
|
{
|
|
if( pthread_mutex_trylock( &handle ) != 0 )
|
|
{
|
|
if( !blocking )
|
|
{
|
|
return false;
|
|
}
|
|
pthread_mutex_lock( &handle );
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_MutexUnlock
|
|
========================
|
|
*/
|
|
void Sys_MutexUnlock( mutexHandle_t& handle )
|
|
{
|
|
pthread_mutex_unlock( & handle );
|
|
}
|
|
|
|
/*
|
|
================================================================================================
|
|
|
|
Interlocked Integer
|
|
|
|
================================================================================================
|
|
*/
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedIncrement
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedIncrement( interlockedInt_t& value )
|
|
{
|
|
// return InterlockedIncrementAcquire( & value );
|
|
return __sync_add_and_fetch( &value, 1 );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedDecrement
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedDecrement( interlockedInt_t& value )
|
|
{
|
|
// return InterlockedDecrementRelease( & value );
|
|
return __sync_sub_and_fetch( &value, 1 );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedAdd
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedAdd( interlockedInt_t& value, interlockedInt_t i )
|
|
{
|
|
//return InterlockedExchangeAdd( & value, i ) + i;
|
|
return __sync_add_and_fetch( &value, i );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedSub
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedSub( interlockedInt_t& value, interlockedInt_t i )
|
|
{
|
|
//return InterlockedExchangeAdd( & value, - i ) - i;
|
|
return __sync_sub_and_fetch( &value, i );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedExchange
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedExchange( interlockedInt_t& value, interlockedInt_t exchange )
|
|
{
|
|
//return InterlockedExchange( & value, exchange );
|
|
|
|
// source: http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html
|
|
// These builtins perform an atomic compare and swap. That is, if the current value of *ptr is oldval, then write newval into *ptr.
|
|
return __sync_val_compare_and_swap( &value, value, exchange );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedCompareExchange
|
|
========================
|
|
*/
|
|
interlockedInt_t Sys_InterlockedCompareExchange( interlockedInt_t& value, interlockedInt_t comparand, interlockedInt_t exchange )
|
|
{
|
|
//return InterlockedCompareExchange( & value, exchange, comparand );
|
|
return __sync_val_compare_and_swap( &value, comparand, exchange );
|
|
}
|
|
|
|
/*
|
|
================================================================================================
|
|
|
|
Interlocked Pointer
|
|
|
|
================================================================================================
|
|
*/
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedExchangePointer
|
|
========================
|
|
*/
|
|
void* Sys_InterlockedExchangePointer( void*& ptr, void* exchange )
|
|
{
|
|
//return InterlockedExchangePointer( & ptr, exchange );
|
|
return __sync_val_compare_and_swap( &ptr, ptr, exchange );
|
|
}
|
|
|
|
/*
|
|
========================
|
|
Sys_InterlockedCompareExchangePointer
|
|
========================
|
|
*/
|
|
void* Sys_InterlockedCompareExchangePointer( void*& ptr, void* comparand, void* exchange )
|
|
{
|
|
//return InterlockedCompareExchangePointer( & ptr, exchange, comparand );
|
|
return __sync_val_compare_and_swap( &ptr, comparand, exchange );
|
|
}
|