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68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
/* impl.h.pthreadext: POSIX THREAD EXTENSIONS
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*
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* $HopeName: $
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* Copyright (C) 2000 Harlequin Ltd, all rights reserved
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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.mps.sig */
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pthread_t id; /* Thread ID */
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struct sigcontext *suspendedScp; /* sigcontext 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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struct sigcontext **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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