-/* $Id$ */
-
/***
This file is part of PulseAudio.
+ Copyright 2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
- by the Free Software Foundation; either version 2 of the License,
+ by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
#include <config.h>
#endif
-#include <assert.h>
#include <pthread.h>
#include <sched.h>
#include <errno.h>
+#ifdef __linux__
+#include <sys/prctl.h>
+#endif
+
#include <pulse/xmalloc.h>
-#include <pulsecore/mutex.h>
-#include <pulsecore/once.h>
#include <pulsecore/atomic.h>
+#include <pulsecore/macro.h>
#include "thread.h"
-#define ASSERT_SUCCESS(x) do { \
- int _r = (x); \
- assert(_r == 0); \
-} while(0)
-
struct pa_thread {
pthread_t id;
pa_thread_func_t thread_func;
void *userdata;
- pa_atomic_int_t running;
+ pa_atomic_t running;
+ bool joined;
+ char *name;
};
struct pa_tls {
pthread_key_t key;
};
-static pa_tls *thread_tls;
-static pa_once_t thread_tls_once = PA_ONCE_INIT;
-
-static void tls_free_cb(void *p) {
+static void thread_free_cb(void *p) {
pa_thread *t = p;
- assert(t);
+ pa_assert(t);
- if (!t->thread_func)
+ if (!t->thread_func) {
/* This is a foreign thread, we need to free the struct */
+ pa_xfree(t->name);
pa_xfree(t);
+ }
}
-static void thread_tls_once_func(void) {
- thread_tls = pa_tls_new(tls_free_cb);
- assert(thread_tls);
-}
+PA_STATIC_TLS_DECLARE(current_thread, thread_free_cb);
static void* internal_thread_func(void *userdata) {
pa_thread *t = userdata;
- assert(t);
+ pa_assert(t);
- t->id = pthread_self();
+#ifdef __linux__
+ prctl(PR_SET_NAME, t->name);
+#elif defined(HAVE_PTHREAD_SETNAME_NP) && defined(OS_IS_DARWIN)
+ pthread_setname_np(t->name);
+#endif
- pa_once(&thread_tls_once, thread_tls_once_func);
+ t->id = pthread_self();
- pa_tls_set(thread_tls, t);
+ PA_STATIC_TLS_SET(current_thread, t);
pa_atomic_inc(&t->running);
t->thread_func(t->userdata);
- pa_atomic_add(&t->running, -2);
+ pa_atomic_sub(&t->running, 2);
return NULL;
}
-pa_thread* pa_thread_new(pa_thread_func_t thread_func, void *userdata) {
+pa_thread* pa_thread_new(const char *name, pa_thread_func_t thread_func, void *userdata) {
pa_thread *t;
- assert(thread_func);
+ pa_assert(thread_func);
- t = pa_xnew(pa_thread, 1);
+ t = pa_xnew0(pa_thread, 1);
+ t->name = pa_xstrdup(name);
t->thread_func = thread_func;
t->userdata = userdata;
- pa_atomic_store(&t->running, 0);
if (pthread_create(&t->id, NULL, internal_thread_func, t) < 0) {
pa_xfree(t);
}
int pa_thread_is_running(pa_thread *t) {
- assert(t);
+ pa_assert(t);
- if (!t->thread_func) {
- /* Mhmm, this is a foreign thread, t->running is not
- * necessarily valid. We misuse pthread_getschedparam() to
- * check if the thread is valid. This might not be portable. */
-
- int policy;
- struct sched_param param;
-
- return pthread_getschedparam(t->id, &policy, ¶m) >= 0 || errno != ESRCH;
- }
+ /* Unfortunately there is no way to tell whether a "foreign"
+ * thread is still running. See
+ * http://udrepper.livejournal.com/16844.html for more
+ * information */
+ pa_assert(t->thread_func);
return pa_atomic_load(&t->running) > 0;
}
void pa_thread_free(pa_thread *t) {
- assert(t);
+ pa_assert(t);
pa_thread_join(t);
+
+ pa_xfree(t->name);
+ pa_xfree(t);
+}
+
+void pa_thread_free_nojoin(pa_thread *t) {
+ pa_assert(t);
+
+ pa_xfree(t->name);
pa_xfree(t);
}
int pa_thread_join(pa_thread *t) {
- assert(t);
+ pa_assert(t);
+ pa_assert(t->thread_func);
+
+ if (t->joined)
+ return -1;
+ t->joined = true;
return pthread_join(t->id, NULL);
}
pa_thread* pa_thread_self(void) {
pa_thread *t;
- pa_once(&thread_tls_once, thread_tls_once_func);
-
- if ((t = pa_tls_get(thread_tls)))
+ if ((t = PA_STATIC_TLS_GET(current_thread)))
return t;
/* This is a foreign thread, let's create a pthread structure to
* make sure that we can always return a sensible pointer */
- t = pa_xnew(pa_thread, 1);
+ t = pa_xnew0(pa_thread, 1);
t->id = pthread_self();
- t->thread_func = NULL;
- t->userdata = NULL;
+ t->joined = true;
pa_atomic_store(&t->running, 2);
- pa_tls_set(thread_tls, t);
+ PA_STATIC_TLS_SET(current_thread, t);
return t;
}
void* pa_thread_get_data(pa_thread *t) {
- assert(t);
+ pa_assert(t);
return t->userdata;
}
void pa_thread_set_data(pa_thread *t, void *userdata) {
- assert(t);
+ pa_assert(t);
t->userdata = userdata;
}
+void pa_thread_set_name(pa_thread *t, const char *name) {
+ pa_assert(t);
+
+ pa_xfree(t->name);
+ t->name = pa_xstrdup(name);
+
+#ifdef __linux__
+ prctl(PR_SET_NAME, name);
+#elif defined(HAVE_PTHREAD_SETNAME_NP) && defined(OS_IS_DARWIN)
+ pthread_setname_np(name);
+#endif
+}
+
+const char *pa_thread_get_name(pa_thread *t) {
+ pa_assert(t);
+
+#ifdef __linux__
+ if (!t->name) {
+ t->name = pa_xmalloc(17);
+
+ if (prctl(PR_GET_NAME, t->name) >= 0)
+ t->name[16] = 0;
+ else {
+ pa_xfree(t->name);
+ t->name = NULL;
+ }
+ }
+#elif defined(HAVE_PTHREAD_GETNAME_NP) && defined(OS_IS_DARWIN)
+ if (!t->name) {
+ t->name = pa_xmalloc0(17);
+ pthread_getname_np(t->id, t->name, 16);
+ }
+#endif
+
+ return t->name;
+}
+
void pa_thread_yield(void) {
#ifdef HAVE_PTHREAD_YIELD
pthread_yield();
#else
- ASSERT_SUCCESS(sched_yield());
+ pa_assert_se(sched_yield() == 0);
#endif
}
}
void pa_tls_free(pa_tls *t) {
- assert(t);
+ pa_assert(t);
- ASSERT_SUCCESS(pthread_key_delete(t->key));
+ pa_assert_se(pthread_key_delete(t->key) == 0);
pa_xfree(t);
}
void *pa_tls_get(pa_tls *t) {
- assert(t);
+ pa_assert(t);
return pthread_getspecific(t->key);
}
void *r;
r = pthread_getspecific(t->key);
- ASSERT_SUCCESS(pthread_setspecific(t->key, userdata));
+ pa_assert_se(pthread_setspecific(t->key, userdata) == 0);
return r;
}
-