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* threads.h, async.h, threads.c (SCM_CRITICAL_SECTION_START,

Browse source 
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.
This commit is contained in:
Marius Vollmer 2005-03-07 21:30:24 +00:00
parent 673ba2da04
commit a4d106c70e
3 changed files with 50 additions and 18 deletions
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15
libguile/threads.h
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@ -132,18 +132,6 @@ SCM_API void *scm_with_guile (void *(*func)(void *), void *data);
SCM_API void *scm_i_with_guile_and_parent (void *(*func)(void *), void *data,
SCM parent);
/* Critical sections */
/* XXX - every critical section needs to be examined and protected
with scm_frame_critical_section, say.
*/
extern scm_i_pthread_mutex_t scm_i_critical_section_mutex;
#define SCM_CRITICAL_SECTION_START \
scm_i_pthread_mutex_lock (&scm_i_critical_section_mutex)
#define SCM_CRITICAL_SECTION_END \
scm_i_pthread_mutex_unlock (&scm_i_critical_section_mutex)
extern int scm_i_thread_go_to_sleep;
@ -174,6 +162,7 @@ SCM_API SCM scm_join_thread (SCM t);
SCM_API SCM scm_make_mutex (void);
SCM_API SCM scm_make_recursive_mutex (void);
SCM_API SCM scm_lock_mutex (SCM m);
SCM_API void scm_frame_lock_mutex (SCM mutex);
SCM_API SCM scm_try_mutex (SCM m);
SCM_API SCM scm_unlock_mutex (SCM m);
@ -190,7 +179,7 @@ SCM_API SCM scm_all_threads (void);
SCM_API int scm_c_thread_exited_p (SCM thread);
SCM_API SCM scm_thread_exited_p (SCM thread);
SCM_API void scm_frame_critical_section (void);
SCM_API void scm_frame_critical_section (SCM mutex);
#define SCM_I_CURRENT_THREAD \
((scm_i_thread *) scm_i_pthread_getspecific (scm_i_thread_key))