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Publish minor changes to readme and configure files in main directory. Main directory and code directory licence texts are now fully updated. Copied from Perforce Change: 196994
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/* th.h: THREAD MANAGER
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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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* .purpose: Provides thread suspension facilities to the shield.
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* <design/thread-manager>. Each thread has to be
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* individually registered and deregistered with an arena.
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*/
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#ifndef th_h
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#define th_h
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#include "mpmtypes.h"
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#include "ring.h"
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#define ThreadSig ((Sig)0x519286ED) /* SIGnature THREaD */
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extern Bool ThreadCheck(Thread thread);
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/* ThreadCheckSimple
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*
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* Simple thread-safe check of a thread object.
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*/
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extern Bool ThreadCheckSimple(Thread thread);
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extern Res ThreadDescribe(Thread thread, mps_lib_FILE *stream, Count depth);
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/* Register/Deregister
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*
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* Explicitly register/deregister a thread on the arena threadRing.
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* Register returns a "Thread" value which needs to be used
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* for deregistration.
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*
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* Threads must not be multiply registered in the same arena.
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*/
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extern Res ThreadRegister(Thread *threadReturn, Arena arena);
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extern void ThreadDeregister(Thread thread, Arena arena);
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/* ThreadRingSuspend/Resume
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*
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* These functions suspend/resume the threads on the ring. If the
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* current thread is among them, it is not suspended, nor is any
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* attempt to resume it made. Threads that can't be suspended/resumed
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* because they are dead are moved to deadRing.
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*/
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extern void ThreadRingSuspend(Ring threadRing, Ring deadRing);
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extern void ThreadRingResume(Ring threadRing, Ring deadRing);
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/* ThreadRingThread
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*
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* Return the thread from an element of the Arena's
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* thread ring.
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*/
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extern Thread ThreadRingThread(Ring threadRing);
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extern Arena ThreadArena(Thread thread);
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extern Res ThreadScan(ScanState ss, Thread thread, void *stackCold,
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mps_area_scan_t scan_area,
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void *closure);
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extern void ThreadSetup(void);
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#endif /* th_h */
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/* C. COPYRIGHT AND LICENSE
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*
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* Copyright (C) 2001-2020 Ravenbrook Limited <http://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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