* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
- * GLib at ftp://ftp.gtk.org/pub/gtk/.
+ * GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
-/*
+/*
* MT safe
*/
+#include "config.h"
+
#include <pthread.h>
#include <errno.h>
#include <stdlib.h>
#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
+# include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+# include <unistd.h>
+#endif
+
+#ifdef HAVE_SCHED_H
+#include <sched.h>
#endif
#define posix_check_err(err, name) G_STMT_START{ \
int error = (err); \
if (error) \
- g_error ("file %s: line %d (%s): error %s during %s", \
+ g_error ("file %s: line %d (%s): error '%s' during '%s'", \
__FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION, \
g_strerror (error), name); \
}G_STMT_END
if (!posix_check_cmd_prio_warned) \
{ \
posix_check_cmd_prio_warned = TRUE; \
- g_warning ("Priorities can only be changed by root."); \
+ g_warning ("Priorities can only be changed " \
+ "(resp. increased) by root."); \
} \
} \
else \
# define pthread_key_create(a, b) pthread_keycreate (a, b)
# define pthread_attr_init(a) pthread_attr_create (a)
# define pthread_attr_destroy(a) pthread_attr_delete (a)
-# define pthread_create(a, b, c, d) pthread_create (a, *b, c, d)
+# define pthread_create(a, b, c, d) pthread_create (a, *b, c, d)
# define mutexattr_default (pthread_mutexattr_default)
# define condattr_default (pthread_condattr_default)
#else /* neither G_THREADS_IMPL_POSIX nor G_THREADS_IMPL_DCE are defined */
#endif
#if defined (POSIX_MIN_PRIORITY) && defined (POSIX_MAX_PRIORITY)
-# define HAVE_PRIORITIES 1
-#endif
-
-gulong g_thread_min_stack_size = 0;
+# define HAVE_PRIORITIES 1
+static gint priority_normal_value;
+# ifdef __FreeBSD__
+ /* FreeBSD threads use different priority values from the POSIX_
+ * defines so we just set them here. The corresponding macros
+ * PTHREAD_MIN_PRIORITY and PTHREAD_MAX_PRIORITY are implied to be
+ * exported by the docs, but they aren't.
+ */
+# define PRIORITY_LOW_VALUE 0
+# define PRIORITY_URGENT_VALUE 31
+# else /* !__FreeBSD__ */
+# define PRIORITY_LOW_VALUE POSIX_MIN_PRIORITY
+# define PRIORITY_URGENT_VALUE POSIX_MAX_PRIORITY
+# endif /* !__FreeBSD__ */
+# define PRIORITY_NORMAL_VALUE priority_normal_value
+#endif /* POSIX_MIN_PRIORITY && POSIX_MAX_PRIORITY */
+
+static gulong g_thread_min_stack_size = 0;
#define G_MUTEX_SIZE (sizeof (pthread_mutex_t))
+#if defined(_SC_THREAD_STACK_MIN) || defined (HAVE_PRIORITIES)
#define HAVE_G_THREAD_IMPL_INIT
-static void
-g_thread_impl_init()
+static void
+g_thread_impl_init(void)
{
-#ifdef HAVE_PRIORITIES
- g_thread_min_priority = POSIX_MIN_PRIORITY;
- g_thread_max_priority = POSIX_MAX_PRIORITY;
-#endif /* HAVE_PRIORITIES */
#ifdef _SC_THREAD_STACK_MIN
g_thread_min_stack_size = MAX (sysconf (_SC_THREAD_STACK_MIN), 0);
#endif /* _SC_THREAD_STACK_MIN */
+#ifdef HAVE_PRIORITIES
+# ifdef G_THREADS_IMPL_POSIX
+ {
+ struct sched_param sched;
+ int policy;
+ posix_check_cmd (pthread_getschedparam (pthread_self(), &policy, &sched));
+ priority_normal_value = sched.sched_priority;
+ }
+# else /* G_THREADS_IMPL_DCE */
+ posix_check_cmd (priority_normal_value =
+ pthread_getprio (*(pthread_t*)thread,
+ g_thread_priority_map [priority]));
+# endif
+#endif /* HAVE_PRIORITIES */
+
}
+#endif /* _SC_THREAD_STACK_MIN || HAVE_PRIORITIES */
static GMutex *
g_mutex_new_posix_impl (void)
{
GMutex *result = (GMutex *) g_new (pthread_mutex_t, 1);
- posix_check_cmd (pthread_mutex_init ((pthread_mutex_t *) result,
+ posix_check_cmd (pthread_mutex_init ((pthread_mutex_t *) result,
mutexattr_default));
return result;
}
g_cond_new_posix_impl (void)
{
GCond *result = (GCond *) g_new (pthread_cond_t, 1);
- posix_check_cmd (pthread_cond_init ((pthread_cond_t *) result,
+ posix_check_cmd (pthread_cond_init ((pthread_cond_t *) result,
condattr_default));
return result;
}
/* pthread_cond_signal, pthread_cond_broadcast and pthread_cond_wait
can be taken directly, as signature and semantic are right, but
without error check then!!!!, we might want to change this
- therfore. */
+ therefore. */
#define G_NSEC_PER_SEC 1000000000
if (!abs_time)
{
- g_cond_wait (cond, entered_mutex);
- return TRUE;
+ result = pthread_cond_wait ((pthread_cond_t *)cond,
+ (pthread_mutex_t *) entered_mutex);
+ timed_out = FALSE;
}
+ else
+ {
+ end_time.tv_sec = abs_time->tv_sec;
+ end_time.tv_nsec = abs_time->tv_usec * (G_NSEC_PER_SEC / G_USEC_PER_SEC);
- end_time.tv_sec = abs_time->tv_sec;
- end_time.tv_nsec = abs_time->tv_usec * (G_NSEC_PER_SEC / G_USEC_PER_SEC);
- g_assert (end_time.tv_nsec < G_NSEC_PER_SEC);
- result = pthread_cond_timedwait ((pthread_cond_t *) cond,
- (pthread_mutex_t *) entered_mutex,
- &end_time);
+ g_return_val_if_fail (end_time.tv_nsec < G_NSEC_PER_SEC, TRUE);
+ result = pthread_cond_timedwait ((pthread_cond_t *) cond,
+ (pthread_mutex_t *) entered_mutex,
+ &end_time);
#ifdef G_THREADS_IMPL_POSIX
- timed_out = (result == ETIMEDOUT);
+ timed_out = (result == ETIMEDOUT);
#else /* G_THREADS_IMPL_DCE */
- timed_out = (result == -1) && (errno = EAGAIN);
+ timed_out = (result == -1) && (errno == EAGAIN);
#endif
+ }
if (!timed_out)
posix_check_err (posix_error (result), "pthread_cond_timedwait");
+
return !timed_out;
}
#else /* G_THREADS_IMPL_DCE */
{
void* data;
- posix_check_cmd (pthread_getspecific (*(pthread_key_t *) private_key,
+ posix_check_cmd (pthread_getspecific (*(pthread_key_t *) private_key,
&data));
return data;
}
}
static void
-g_thread_create_posix_impl (GThreadFunc thread_func,
- gpointer arg,
+g_thread_create_posix_impl (GThreadFunc thread_func,
+ gpointer arg,
gulong stack_size,
gboolean joinable,
gboolean bound,
gint ret;
g_return_if_fail (thread_func);
+ g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
+ g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
posix_check_cmd (pthread_attr_init (&attr));
-
+
#ifdef HAVE_PTHREAD_ATTR_SETSTACKSIZE
if (stack_size)
{
stack_size = MAX (g_thread_min_stack_size, stack_size);
- posix_check_cmd (pthread_attr_setstacksize (&attr, stack_size));
+ /* No error check here, because some systems can't do it and
+ * we simply don't want threads to fail because of that. */
+ pthread_attr_setstacksize (&attr, stack_size);
}
#endif /* HAVE_PTHREAD_ATTR_SETSTACKSIZE */
posix_check_cmd (pthread_attr_setdetachstate (&attr,
joinable ? PTHREAD_CREATE_JOINABLE : PTHREAD_CREATE_DETACHED));
#endif /* G_THREADS_IMPL_POSIX */
-
+
#ifdef HAVE_PRIORITIES
# ifdef G_THREADS_IMPL_POSIX
{
struct sched_param sched;
posix_check_cmd (pthread_attr_getschedparam (&attr, &sched));
- sched.sched_priority = g_thread_map_priority (priority);
+ sched.sched_priority = g_thread_priority_map [priority];
posix_check_cmd_prio (pthread_attr_setschedparam (&attr, &sched));
}
# else /* G_THREADS_IMPL_DCE */
- posix_check_cmd_prio
- (pthread_attr_setprio (&attr, g_thread_map_priority (priority)));
+ posix_check_cmd_prio
+ (pthread_attr_setprio (&attr, g_thread_priority_map [priority]));
# endif /* G_THREADS_IMPL_DCE */
#endif /* HAVE_PRIORITIES */
-
- ret = posix_error (pthread_create (thread, &attr,
+ ret = posix_error (pthread_create (thread, &attr,
(void* (*)(void*))thread_func, arg));
-
+
posix_check_cmd (pthread_attr_destroy (&attr));
if (ret == EAGAIN)
#endif /* G_THREADS_IMPL_DCE */
}
-static void
+static void
g_thread_yield_posix_impl (void)
{
POSIX_YIELD_FUNC;
static void
g_thread_join_posix_impl (gpointer thread)
-{
+{
gpointer ignore;
posix_check_cmd (pthread_join (*(pthread_t*)thread, &ignore));
}
-static void
-g_thread_exit_posix_impl (void)
+static void
+g_thread_exit_posix_impl (void)
{
pthread_exit (NULL);
}
static void
g_thread_set_priority_posix_impl (gpointer thread, GThreadPriority priority)
{
+ g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
+ g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
#ifdef HAVE_PRIORITIES
# ifdef G_THREADS_IMPL_POSIX
- struct sched_param sched;
- int policy;
- posix_check_cmd (pthread_getschedparam (*(pthread_t*)thread, &policy,
- &sched));
- sched.sched_priority = g_thread_map_priority (priority);
- posix_check_cmd_prio (pthread_setschedparam (*(pthread_t*)thread, policy,
- &sched));
+ {
+ struct sched_param sched;
+ int policy;
+ posix_check_cmd (pthread_getschedparam (*(pthread_t*)thread, &policy,
+ &sched));
+ sched.sched_priority = g_thread_priority_map [priority];
+ posix_check_cmd_prio (pthread_setschedparam (*(pthread_t*)thread, policy,
+ &sched));
+ }
# else /* G_THREADS_IMPL_DCE */
- posix_check_cmd_prio (pthread_setprio (*(pthread_t*)thread,
- g_thread_map_priority (priority)));
+ posix_check_cmd_prio (pthread_setprio (*(pthread_t*)thread,
+ g_thread_priority_map [priority]));
# endif
#endif /* HAVE_PRIORITIES */
}
*(pthread_t*)thread = pthread_self();
}
+static gboolean
+g_thread_equal_posix_impl (gpointer thread1, gpointer thread2)
+{
+ return (pthread_equal (*(pthread_t*)thread1, *(pthread_t*)thread2) != 0);
+}
+
static GThreadFunctions g_thread_functions_for_glib_use_default =
{
g_mutex_new_posix_impl,
g_thread_join_posix_impl,
g_thread_exit_posix_impl,
g_thread_set_priority_posix_impl,
- g_thread_self_posix_impl
+ g_thread_self_posix_impl,
+ g_thread_equal_posix_impl
};