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142 lines
4.7 KiB
C
142 lines
4.7 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* cothreads_compat.h: Compatibility macros between cothreads packages
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* use the old cothreads implementation in gst/cothreads.[ch] */
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#if defined(_COTHREADS_OMEGA)
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#include "../cothreads.h"
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/* the name of this cothreads type */
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#define COTHREADS_NAME "omega"
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#define COTHREADS_NAME_CAPITAL "Omega"
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/* unify the structs
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*
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* "cothread" and "cothread_context" need to be defined
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*/
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typedef cothread_state cothread;
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/* define functions
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* the macros are prepended with "do_"
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*/
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#define do_cothreads_init(x) /* NOP */
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#define do_cothreads_stackquery(stack,size) cothread_stackquery(stack,size)
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#define do_cothread_switch(to) cothread_switch(to)
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#define do_cothread_create(new_cothread, context, func, argc, argv) \
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G_STMT_START{ \
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new_cothread = cothread_create (context); \
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if (new_cothread) { \
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cothread_setfunc (new_cothread, (func), (argc), (argv)); \
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} \
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}G_STMT_END
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#define do_cothread_setfunc(cothread, context, func, argc, argv) \
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cothread_setfunc ((cothread), (func), (argc), (argv))
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#define do_cothread_destroy(cothread) cothread_free(cothread)
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#define do_cothread_context_init() (cothread_context_init ())
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#define do_cothread_context_destroy(context) cothread_context_free (context)
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#define do_cothread_lock(cothread) cothread_lock(cothread)
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#define do_cothread_unlock(cothread) cothread_unlock(cothread)
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#define do_cothread_get_current() (cothread_current())
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#define do_cothread_get_main(context) (cothread_current_main())
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/* use the new cothreads implementation in libs/ext/cothreads */
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#elif defined(_COTHREADS_WINGO)
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#include <cothreads/cothreads.h>
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#include <errno.h>
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/* the name of this cothreads */
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#define COTHREADS_NAME "wingo"
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#define COTHREADS_NAME_CAPITAL "Wingo"
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/* unify the structs
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*
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* "cothread" and "cothread_context" need to vbe defined
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*/
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typedef cothread cothread_context;
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/* define functions
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* the macros are prepended with "do_"
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*/
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#define do_cothreads_init(x) G_STMT_START{ \
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if (!cothreads_initialized()) \
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cothreads_init(0x0200000, 16); \
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}G_STMT_END
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#define do_cothreads_stackquery(stack,size) \
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cothreads_alloc_thread_stack (stack, size)
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static void do_cothread_switch(cothread *to)
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{
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cothread *from = cothread_self ();
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if (from == (to)) {
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GST_DEBUG (GST_CAT_COTHREAD_SWITCH,
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"trying to switch to the same cothread (%p), not allowed",
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(to));
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g_warning ("trying to switch to the same cothread, not allowed");
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} else {
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GST_INFO (GST_CAT_COTHREAD_SWITCH,
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"switching from cothread %p to cothread %p", from, (to));
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cothread_switch (from, (to));
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GST_INFO (GST_CAT_COTHREAD_SWITCH, "we're in cothread %p now", from);
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}
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}
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#define do_cothread_create(new_cothread, context, func, argc, argv) \
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G_STMT_START{ \
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new_cothread = cothread_create ((func), 0, (void**) (argv), (context)); \
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}G_STMT_END
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#define do_cothread_setfunc(cothread, context, func, argc, argv) \
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cothread_setfunc ((cothread), (func), (argc), (void **) (argv), (context))
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#define do_cothread_destroy(cothread) cothread_destroy(cothread)
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#define do_cothread_context_init() (cothread_create (NULL, 0, \
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NULL, NULL))
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#define do_cothread_context_destroy(context) cothread_destroy (context)
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#define do_cothread_lock(cothread) /* FIXME */
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#define do_cothread_unlock(cothread) /* FIXME */
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#define do_cothread_get_current() (cothread_self())
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#define do_cothread_get_main(context) (context)
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/* bail out with an error if no cothreads package is defined */
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#else
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#error "No cothreads package defined"
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#endif
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