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a4d106c70e
SCM_CRITICAL_SECTION_END): Moved here from threads.h since now they also block/unblock execution of asyncs and call scm_async_click which is declared in async.h but threads.h can not include async.h since async.h already includes threads.h. (scm_i_critical_section_level): New, for checking mistakes in the use of the SCM_CRITICAL_SECTION_* macros. (scm_i_critical_section_mutex): Make it a recursive mutex so that critical sections can be nested. * threads.h, threads.c (scm_frame_lock_mutex): New. (scm_frame_critical_section): Take mutex as argument. (framed_critical_section_mutex): New, used as default for above. (scm_init_threads): Initialize it. (scm_threads_prehistory): Do not initialize thread_admin_mutex and scm_i_critical_section_mutex; both are initialized statically.
96 lines
3 KiB
C
96 lines
3 KiB
C
/* classes: h_files */
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#ifndef SCM_ASYNC_H
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#define SCM_ASYNC_H
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/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2004 Free Software Foundation, Inc.
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libguile/__scm.h"
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#include "libguile/root.h"
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#include "libguile/threads.h"
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#define scm_mask_ints (scm_root->block_asyncs != 0)
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SCM_API void scm_async_click (void);
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SCM_API void scm_switch (void);
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SCM_API SCM scm_async (SCM thunk);
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SCM_API SCM scm_async_mark (SCM a);
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SCM_API SCM scm_system_async_mark (SCM a);
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SCM_API SCM scm_system_async_mark_for_thread (SCM a, SCM thread);
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SCM_API void scm_i_queue_async_cell (SCM cell, scm_i_thread *);
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SCM_API int scm_i_setup_sleep (scm_i_thread *,
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SCM obj, scm_i_pthread_mutex_t *m, int fd);
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SCM_API void scm_i_reset_sleep (scm_i_thread *);
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SCM_API SCM scm_run_asyncs (SCM list_of_a);
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SCM_API SCM scm_noop (SCM args);
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SCM_API SCM scm_call_with_blocked_asyncs (SCM proc);
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SCM_API SCM scm_call_with_unblocked_asyncs (SCM proc);
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void *scm_c_call_with_blocked_asyncs (void *(*p) (void *d), void *d);
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void *scm_c_call_with_unblocked_asyncs (void *(*p) (void *d), void *d);
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void scm_frame_block_asyncs (void);
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void scm_frame_unblock_asyncs (void);
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/* Critical sections */
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/* XXX - every critical section needs to be examined whether the
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requirements for SCM_CRITICAL_SECTION_START/END are fulfilled. See
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the manual.
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*/
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/* Defined in threads.c. scm_i_critical_section_level is only used
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for error checking and will go away eventually. */
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extern scm_i_pthread_mutex_t scm_i_critical_section_mutex;
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extern int scm_i_critical_section_level;
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#define SCM_CRITICAL_SECTION_START \
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do { \
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scm_i_pthread_mutex_lock (&scm_i_critical_section_mutex);\
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SCM_I_CURRENT_THREAD->block_asyncs++; \
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scm_i_critical_section_level++; \
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} while (0)
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#define SCM_CRITICAL_SECTION_END \
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do { \
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scm_i_critical_section_level--; \
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SCM_I_CURRENT_THREAD->block_asyncs--; \
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scm_i_pthread_mutex_unlock (&scm_i_critical_section_mutex); \
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scm_async_click (); \
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} while (0)
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SCM_API void scm_init_async (void);
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#if (SCM_ENABLE_DEPRECATED == 1)
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SCM_API SCM scm_system_async (SCM thunk);
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SCM_API SCM scm_unmask_signals (void);
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SCM_API SCM scm_mask_signals (void);
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#endif
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#endif /* SCM_ASYNC_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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