mirror of https://github.com/PCSX2/pcsx2.git
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/*
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* ptw32_new.c
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*
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* Description:
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* This translation unit provides platform-specific cancelation functionality.
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*
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* --------------------------------------------------------------------------
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*
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* Pthreads-win32 - POSIX Threads Library for Win32
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* Copyright(C) 1998 John E. Bossom
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* Copyright(C) 1999,2005 Pthreads-win32 contributors
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*
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* Contact Email: rpj@callisto.canberra.edu.au
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*
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* The current list of contributors is contained
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* in the file CONTRIBUTORS included with the source
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* code distribution. The list can also be seen at the
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* following World Wide Web location:
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* http://sources.redhat.com/pthreads-win32/contributors.html
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library in the file COPYING.LIB;
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* if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include "ptw32pch.h"
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#if defined(_M_IX86) || defined(_X86_)
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#define PTW32_PROGCTR(Context) ((Context).Eip)
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#endif
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#if defined (_M_IA64)
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#define PTW32_PROGCTR(Context) ((Context).StIIP)
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#endif
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#if defined(_MIPS_)
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#define PTW32_PROGCTR(Context) ((Context).Fir)
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#endif
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#if defined(_ALPHA_)
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#define PTW32_PROGCTR(Context) ((Context).Fir)
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#endif
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#if defined(_PPC_)
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#define PTW32_PROGCTR(Context) ((Context).Iar)
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#endif
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#if defined(_AMD64_)
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#define PTW32_PROGCTR(Context) ((Context).Rip)
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#endif
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#if !defined(PTW32_PROGCTR)
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#error Module contains CPU-specific code; modify and recompile.
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#endif
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static void
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ptw32_cancel_self (void)
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{
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ptw32_throw (PTW32_EPS_CANCEL);
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/* Never reached */
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}
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static void CALLBACK
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ptw32_cancel_callback (DWORD unused)
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{
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ptw32_throw (PTW32_EPS_CANCEL);
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/* Never reached */
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}
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/*
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* ptw32_RegisterCancelation() -
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* Must have args of same type as QueueUserAPCEx because this function
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* is a substitute for QueueUserAPCEx if it's not available.
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*/
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DWORD
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ptw32_RegisterCancelation (PAPCFUNC unused1, HANDLE threadH, DWORD unused2)
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{
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CONTEXT context;
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context.ContextFlags = CONTEXT_CONTROL;
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GetThreadContext (threadH, &context);
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PTW32_PROGCTR (context) = (DWORD_PTR) ptw32_cancel_self;
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SetThreadContext (threadH, &context);
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return 0;
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}
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void ptw32_PrepCancel( ptw32_thread_t* tp )
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{
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HANDLE threadH = tp->threadH;
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SuspendThread (threadH);
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if (WaitForSingleObject (threadH, 0) == WAIT_TIMEOUT)
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{
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tp->state = PThreadStateCanceling;
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tp->cancelState = PTHREAD_CANCEL_DISABLE;
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/*
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* If alertdrv and QueueUserAPCEx is available then the following
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* will result in a call to QueueUserAPCEx with the args given, otherwise
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* this will result in a call to ptw32_RegisterCancelation and only
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* the threadH arg will be used.
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*/
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ptw32_register_cancelation (ptw32_cancel_callback, threadH, 0);
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(void) pthread_mutex_unlock (&tp->cancelLock);
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ResumeThread (threadH);
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}
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} |