* 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>
#include <sched.h>
#endif
-#ifdef G_THREAD_USE_PID_SURROGATE
-# include <sys/resource.h>
-# define PID_IN_THREAD(thread) (*(pid_t*)(((gchar*)thread)+sizeof(pthread_t)))
-# define SET_PRIO(pid, prio) \
- posix_check_cmd_prio ((setpriority (PRIO_PROCESS, (pid), \
- g_thread_priority_map [prio]) == -1) ? \
- (errno == EACCES ? EPERM : errno ): 0)
-#endif /* G_THREAD_USE_PID_SURROGATE */
-
#define posix_check_err(err, name) G_STMT_START{ \
int error = (err); \
if (error) \
# 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 */
# error This should not happen. Contact the GLib team.
#endif
-#ifdef G_THREAD_USE_PID_SURROGATE
-# define PRIORITY_LOW_VALUE 15
-# define PRIORITY_NORMAL_VALUE 0
-# define PRIORITY_HIGH_VALUE -15
-# define PRIORITY_URGENT_VALUE -20
-#elif defined (POSIX_MIN_PRIORITY) && defined (POSIX_MAX_PRIORITY)
+#if defined (POSIX_MIN_PRIORITY) && defined (POSIX_MAX_PRIORITY)
# define HAVE_PRIORITIES 1
-# define PRIORITY_LOW_VALUE POSIX_MIN_PRIORITY
-# define PRIORITY_URGENT_VALUE POSIX_MAX_PRIORITY
+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 */
-gulong g_thread_min_stack_size = 0;
+static gulong g_thread_min_stack_size = 0;
#define G_MUTEX_SIZE (sizeof (pthread_mutex_t))
-#ifdef _SC_THREAD_STACK_MIN
+#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 _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;
}
#endif
}
-#ifdef G_THREAD_USE_PID_SURROGATE
-struct proxy_data
-{
- GThreadFunc thread_func;
- gpointer arg;
- gpointer thread;
- GThreadPriority priority;
-};
-
-static void
-g_thread_create_posix_impl_proxy (struct proxy_data *data)
-{
- GThreadFunc thread_func = data->thread_func;
- GThreadFunc arg = data->arg;
- PID_IN_THREAD (data->thread) = getpid();
- SET_PRIO (PID_IN_THREAD (data->thread), data->priority);
- g_free (data);
- thread_func (arg);
-}
-#endif /* G_THREAD_USE_PID_SURROGATE */
-
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,
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 G_THREAD_USE_PID_SURROGATE
- {
- struct proxy_data *data = g_new (struct proxy_data, 1);
- data->thread_func = thread_func;
- data->arg = arg;
- data->thread = thread;
- data->priority = priority;
- PID_IN_THREAD (thread) = 0;
- ret = posix_error (pthread_create (thread, &attr, (void* (*)(void*))
- g_thread_create_posix_impl_proxy,
- data));
- }
-#else /* G_THREAD_USE_PID_SURROGATE */
-# ifdef HAVE_PRIORITIES
-# ifdef 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_priority_map [priority];
posix_check_cmd_prio (pthread_attr_setschedparam (&attr, &sched));
}
-# else /* G_THREADS_IMPL_DCE */
- posix_check_cmd_prio
+# else /* G_THREADS_IMPL_DCE */
+ 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,
+# endif /* G_THREADS_IMPL_DCE */
+#endif /* HAVE_PRIORITIES */
+ ret = posix_error (pthread_create (thread, &attr,
(void* (*)(void*))thread_func, arg));
-#endif /* !G_THREAD_USE_PID_SURROGATE */
posix_check_cmd (pthread_attr_destroy (&attr));
#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);
}
{
struct sched_param sched;
int policy;
- posix_check_cmd (pthread_getschedparam (*(pthread_t*)thread, &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,
+ 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,
+ posix_check_cmd_prio (pthread_setprio (*(pthread_t*)thread,
g_thread_priority_map [priority]));
# endif
-#elif defined (G_THREAD_USE_PID_SURROGATE)
- /* If the addressed thread hasn't yet been able to provide it's pid,
- * we ignore the request. Should be more than rare */
- if (PID_IN_THREAD (thread) != 0)
- SET_PRIO (PID_IN_THREAD (thread), priority);
-#endif /* G_THREAD_USE_PID_SURROGATE */
+#endif /* HAVE_PRIORITIES */
}
static void
g_thread_self_posix_impl (gpointer thread)
{
*(pthread_t*)thread = pthread_self();
-#ifdef G_THREAD_USE_PID_SURROGATE
- PID_IN_THREAD (thread) = getpid();
-#endif /* G_THREAD_USE_PID_SURROGATE */
+}
+
+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_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
};
projects / platform / upstream / glib.git / blobdiff