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44 lines
1.9 KiB
C
44 lines
1.9 KiB
C
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/* Linuxthreads - a simple clone()-based implementation of Posix */
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/* threads for Linux. */
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/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr) */
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/* */
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/* This program is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU Library General Public License */
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/* as published by the Free Software Foundation; either version 2 */
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/* of the License, or (at your option) any later version. */
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/* */
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/* This program 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 Library General Public License for more details. */
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/* hacked for use with gstreamer by andy wingo <wingo@pobox.com> */
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/* Internal data structures */
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#include <sys/types.h> /* _pthread_fastlock */
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typedef void * pthread_descr;
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/* Global array of thread handles, used for validating a thread id
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and retrieving the corresponding thread descriptor. Also used for
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mapping the available stack segments. */
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extern struct pthread_handle_struct __pthread_handles[PTHREAD_THREADS_MAX];
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struct pthread_handle_struct {
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struct _pthread_fastlock h_lock; /* Fast lock for sychronized access */
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pthread_descr h_descr; /* Thread descriptor or NULL if invalid */
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char * h_bottom; /* Lowest address in the stack thread */
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};
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typedef struct pthread_handle_struct * pthread_handle;
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/* Return the handle corresponding to a thread id */
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static inline pthread_handle thread_handle(pthread_t id)
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{
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return &__pthread_handles[id % PTHREAD_THREADS_MAX];
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}
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