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98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* pthreadext.h: POSIX THREAD EXTENSIONS
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*
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* $Id$
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* Copyright (c) 2001-2020 Ravenbrook Limited. See end of file for license.
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*
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* .readership: MM developers.
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*
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* .purpose: Provides extension to Pthreads.
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*/
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#ifndef pthreadext_h
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#define pthreadext_h
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#include <signal.h>
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#include "mpm.h"
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#define PThreadextSig ((Sig)0x519B286E) /* SIGnature PTHReadExt */
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/* PThreadext -- extension datatype */
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typedef struct PThreadextStruct *PThreadext;
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/* PThreadextStruct -- structure definition
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*
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* Should be embedded in a client structure
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*/
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typedef struct PThreadextStruct {
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Sig sig; /* <design/sig> */
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pthread_t id; /* Thread ID */
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MutatorContext context; /* context if suspended */
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RingStruct threadRing; /* ring of suspended threads */
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RingStruct idRing; /* duplicate suspensions for id */
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} PThreadextStruct;
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/* PThreadextCheck -- Check a pthreadext */
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extern Bool PThreadextCheck(PThreadext pthreadext);
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/* PThreadextInit -- Initialize a pthreadext */
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extern void PThreadextInit(PThreadext pthreadext, pthread_t id);
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/* PThreadextFinish -- Finish a pthreadext */
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extern void PThreadextFinish(PThreadext pthreadext);
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/* PThreadextSuspend -- Suspend a pthreadext and return its context. */
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extern Res PThreadextSuspend(PThreadext pthreadext,
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MutatorContext *contextReturn);
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/* PThreadextResume -- Resume a suspended pthreadext */
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extern Res PThreadextResume(PThreadext pthreadext);
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#endif /* pthreadext_h */
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
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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
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* met:
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*
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* 1. 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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*
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* 2. 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
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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