mirror of
https://github.com/id-Software/DOOM-3-BFG.git
synced 2024-12-02 17:02:17 +00:00
322 lines
8.3 KiB
C++
322 lines
8.3 KiB
C++
/*
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===========================================================================
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Doom 3 BFG Edition GPL Source Code
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Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.
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Copyright (C) 2012 Robert Beckebans
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This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").
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Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 BFG Edition Source Code. If not, see <http://www.gnu.org/licenses/>.
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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.
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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.
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===========================================================================
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*/
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#pragma hdrstop
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#include "../../precompiled.h"
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//#include <SDL_thread.h>
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typedef void* ( *pthread_function_t )( void* );
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/*
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========================
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Sys_Createthread
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========================
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*/
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uintptr_t Sys_CreateThread( xthread_t function, void* parms, xthreadPriority priority, const char* name, core_t core, int stackSize, bool suspended )
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{
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//Sys_EnterCriticalSection();
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pthread_attr_t attr;
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pthread_attr_init( &attr );
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if( pthread_attr_setdetachstate( &attr, PTHREAD_CREATE_JOINABLE ) != 0 )
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{
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idLib::common->FatalError( "ERROR: pthread_attr_setdetachstate %s failed\n", name );
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return ( uintptr_t )0;
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}
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pthread_t handle;
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if( pthread_create( ( pthread_t* )&handle, &attr, ( pthread_function_t )function, parms ) != 0 )
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{
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idLib::common->FatalError( "ERROR: pthread_create %s failed\n", name );
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return ( uintptr_t )0;
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}
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pthread_attr_destroy( &attr );
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// RB: TODO pthread_setname_np is different on Linux, MacOSX and other systems
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#if 0
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if( pthread_setname_np( handle, name ) != 0 )
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{
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idLib::common->FatalError( "ERROR: pthread_setname_np %s failed\n", name );
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return ( uintptr_t )0;
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}
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#endif
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/*
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TODO RB: support thread priorities?
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if( priority == THREAD_HIGHEST )
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{
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SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_HIGHEST ); // we better sleep enough to do this
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}
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else if( priority == THREAD_ABOVE_NORMAL )
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{
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SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_ABOVE_NORMAL );
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}
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else if( priority == THREAD_BELOW_NORMAL )
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{
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SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_BELOW_NORMAL );
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}
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else if( priority == THREAD_LOWEST )
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{
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SetThreadPriority( ( HANDLE )handle, THREAD_PRIORITY_LOWEST );
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}
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*/
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// Under Linux, we don't set the thread affinity and let the OS deal with scheduling
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return ( uintptr_t )handle;
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}
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/*
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========================
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Sys_GetCurrentThreadID
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========================
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*/
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uintptr_t Sys_GetCurrentThreadID()
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{
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return pthread_self();
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}
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/*
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========================
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Sys_DestroyThread
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========================
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*/
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void Sys_DestroyThread( uintptr_t threadHandle )
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{
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if( threadHandle == 0 )
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{
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return;
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}
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char name[128];
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pthread_getname_np( threadHandle, name, sizeof( name ) );
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#if !defined(__ANDROID__)
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if( pthread_cancel( ( pthread_t )threadHandle ) != 0 )
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{
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idLib::common->FatalError( "ERROR: pthread_cancel %s failed\n", name );
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}
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#endif
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if( pthread_join( ( pthread_t )threadHandle, NULL ) != 0 )
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{
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idLib::common->FatalError( "ERROR: pthread_join %s failed\n", name );
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}
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}
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/*
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========================
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Sys_Yield
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========================
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*/
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void Sys_Yield()
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{
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pthread_yield();
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}
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/*
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================================================================================================
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Signal
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================================================================================================
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*/
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/*
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================================================================================================
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Mutex
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================================================================================================
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*/
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/*
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========================
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Sys_MutexCreate
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========================
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*/
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void Sys_MutexCreate( mutexHandle_t& handle )
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{
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pthread_mutexattr_t attr;
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pthread_mutexattr_init( &attr );
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pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_ERRORCHECK );
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pthread_mutex_init( &handle, &attr );
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pthread_mutexattr_destroy( &attr );
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}
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/*
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========================
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Sys_MutexDestroy
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========================
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*/
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void Sys_MutexDestroy( mutexHandle_t& handle )
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{
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pthread_mutex_destroy( &handle );
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}
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/*
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========================
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Sys_MutexLock
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========================
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*/
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bool Sys_MutexLock( mutexHandle_t& handle, bool blocking )
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{
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if( pthread_mutex_trylock( &handle ) == 0 )
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{
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if( !blocking )
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{
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return false;
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}
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pthread_mutex_lock( &handle );
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}
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return true;
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}
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/*
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========================
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Sys_MutexUnlock
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========================
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*/
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void Sys_MutexUnlock( mutexHandle_t& handle )
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{
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pthread_mutex_unlock( & handle );
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}
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/*
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================================================================================================
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Interlocked Integer
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================================================================================================
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*/
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/*
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========================
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Sys_InterlockedIncrement
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========================
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*/
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interlockedInt_t Sys_InterlockedIncrement( interlockedInt_t& value )
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{
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// return InterlockedIncrementAcquire( & value );
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return __sync_add_and_fetch( &value, 1 );
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}
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/*
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========================
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Sys_InterlockedDecrement
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========================
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*/
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interlockedInt_t Sys_InterlockedDecrement( interlockedInt_t& value )
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{
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// return InterlockedDecrementRelease( & value );
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return __sync_sub_and_fetch( &value, 1 );
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}
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/*
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========================
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Sys_InterlockedAdd
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========================
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*/
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interlockedInt_t Sys_InterlockedAdd( interlockedInt_t& value, interlockedInt_t i )
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{
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//return InterlockedExchangeAdd( & value, i ) + i;
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return __sync_add_and_fetch( &value, i );
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}
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/*
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========================
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Sys_InterlockedSub
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========================
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*/
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interlockedInt_t Sys_InterlockedSub( interlockedInt_t& value, interlockedInt_t i )
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{
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//return InterlockedExchangeAdd( & value, - i ) - i;
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return __sync_sub_and_fetch( &value, i );
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}
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/*
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========================
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Sys_InterlockedExchange
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========================
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*/
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interlockedInt_t Sys_InterlockedExchange( interlockedInt_t& value, interlockedInt_t exchange )
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{
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//return InterlockedExchange( & value, exchange );
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// source: http://gcc.gnu.org/onlinedocs/gcc-4.1.1/gcc/Atomic-Builtins.html
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// These builtins perform an atomic compare and swap. That is, if the current value of *ptr is oldval, then write newval into *ptr.
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return __sync_val_compare_and_swap( &value, value, exchange );
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}
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/*
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========================
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Sys_InterlockedCompareExchange
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========================
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*/
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interlockedInt_t Sys_InterlockedCompareExchange( interlockedInt_t& value, interlockedInt_t comparand, interlockedInt_t exchange )
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{
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//return InterlockedCompareExchange( & value, exchange, comparand );
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return __sync_val_compare_and_swap( &value, comparand, exchange );
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}
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/*
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================================================================================================
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Interlocked Pointer
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================================================================================================
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*/
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/*
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========================
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Sys_InterlockedExchangePointer
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========================
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*/
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void* Sys_InterlockedExchangePointer( void*& ptr, void* exchange )
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{
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//return InterlockedExchangePointer( & ptr, exchange );
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return __sync_val_compare_and_swap( &ptr, ptr, exchange );
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}
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/*
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========================
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Sys_InterlockedCompareExchangePointer
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========================
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*/
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void* Sys_InterlockedCompareExchangePointer( void*& ptr, void* comparand, void* exchange )
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{
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//return InterlockedCompareExchangePointer( & ptr, exchange, comparand );
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return __sync_val_compare_and_swap( &ptr, comparand, exchange );
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}
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