/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#ifdef HAVE_PTHREAD_NP_H
# include <pthread_np.h>
#endif
#import "macros.h"
#ifdef OF_HAIKU
# include <kernel/OS.h>
#endif
static int minPrio, maxPrio, normalPrio;
struct thread_ctx {
void (*function)(id object);
id object;
};
/*
* This is done here to make sure this is done as early as possible in the main
* thread.
*/
OF_CONSTRUCTOR()
{
pthread_attr_t pattr;
#ifdef HAVE_PTHREAD_ATTR_GETSCHEDPOLICY
int policy;
#endif
struct sched_param param;
OF_ENSURE(pthread_attr_init(&pattr) == 0);
#ifdef HAVE_PTHREAD_ATTR_GETSCHEDPOLICY
OF_ENSURE(pthread_attr_getschedpolicy(&pattr, &policy) == 0);
OF_ENSURE((minPrio = sched_get_priority_min(policy)) != -1);
OF_ENSURE((maxPrio = sched_get_priority_max(policy)) != -1);
#endif
OF_ENSURE(pthread_attr_getschedparam(&pattr, ¶m) == 0);
normalPrio = param.sched_priority;
pthread_attr_destroy(&pattr);
}
static void *
function_wrapper(void *data)
{
struct thread_ctx *ctx = data;
pthread_cleanup_push(free, data);
ctx->function(ctx->object);
pthread_cleanup_pop(1);
return NULL;
}
bool
of_thread_attr_init(of_thread_attr_t *attr)
{
pthread_attr_t pattr;
if (pthread_attr_init(&pattr) != 0)
return false;
@try {
attr->priority = 0;
if (pthread_attr_getstacksize(&pattr, &attr->stackSize) != 0)
return false;
} @finally {
pthread_attr_destroy(&pattr);
}
return true;
}
bool
of_thread_new(of_thread_t *thread, void (*function)(id), id object,
const of_thread_attr_t *attr)
{
bool ret;
pthread_attr_t pattr;
if (pthread_attr_init(&pattr) != 0)
return false;
@try {
struct thread_ctx *ctx;
if (attr != NULL) {
struct sched_param param;
if (attr->priority < -1 || attr->priority > 1)
return false;
#ifdef HAVE_PTHREAD_ATTR_SETINHERITSCHED
if (pthread_attr_setinheritsched(&pattr,
PTHREAD_EXPLICIT_SCHED) != 0)
return false;
#endif
if (attr->priority < 0) {
param.sched_priority = minPrio +
(1.0f + attr->priority) *
(normalPrio - minPrio);
} else
param.sched_priority = normalPrio +
attr->priority * (maxPrio - normalPrio);
if (pthread_attr_setschedparam(&pattr, ¶m) != 0)
return false;
if (attr->stackSize > 0) {
if (pthread_attr_setstacksize(&pattr,
attr->stackSize) != 0)
return false;
}
}
if ((ctx = malloc(sizeof(*ctx))) == NULL)
return false;
ctx->function = function;
ctx->object = object;
ret = (pthread_create(thread, &pattr,
function_wrapper, ctx) == 0);
} @finally {
pthread_attr_destroy(&pattr);
}
return ret;
}
bool
of_thread_join(of_thread_t thread)
{
void *ret;
if (pthread_join(thread, &ret) != 0)
return false;
#ifdef PTHREAD_CANCELED
return (ret != PTHREAD_CANCELED);
#else
return true;
#endif
}
bool
of_thread_detach(of_thread_t thread)
{
return (pthread_detach(thread) == 0);
}
void OF_NO_RETURN_FUNC
of_thread_exit(void)
{
pthread_exit(NULL);
OF_UNREACHABLE
}
void
of_thread_set_name(const char *name)
{
#if defined(OF_HAIKU)
rename_thread(find_thread(NULL), name);
#elif defined(HAVE_PTHREAD_SET_NAME_NP)
pthread_set_name_np(pthread_self(), name);
#elif defined(HAVE_PTHREAD_SETNAME_NP)
# if defined(OF_MACOS) || defined(OF_IOS)
pthread_setname_np(name);
# elif defined(__GLIBC__)
char buffer[16];
strncpy(buffer, name, 15);
buffer[15] = 0;
pthread_setname_np(pthread_self(), buffer);
# endif
#endif
}
void
of_once(of_once_t *control, void (*func)(void))
{
pthread_once(control, func);
}
bool
of_tlskey_new(of_tlskey_t *key)
{
return (pthread_key_create(key, NULL) == 0);
}
bool
of_tlskey_free(of_tlskey_t key)
{
return (pthread_key_delete(key) == 0);
}
bool
of_mutex_new(of_mutex_t *mutex)
{
return (pthread_mutex_init(mutex, NULL) == 0);
}
bool
of_mutex_lock(of_mutex_t *mutex)
{
return (pthread_mutex_lock(mutex) == 0);
}
bool
of_mutex_trylock(of_mutex_t *mutex)
{
return (pthread_mutex_trylock(mutex) == 0);
}
bool
of_mutex_unlock(of_mutex_t *mutex)
{
return (pthread_mutex_unlock(mutex) == 0);
}
bool
of_mutex_free(of_mutex_t *mutex)
{
return (pthread_mutex_destroy(mutex) == 0);
}
#ifdef OF_HAVE_RECURSIVE_PTHREAD_MUTEXES
bool
of_rmutex_new(of_rmutex_t *rmutex)
{
pthread_mutexattr_t attr;
if (pthread_mutexattr_init(&attr) != 0)
return false;
if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE) != 0)
return false;
if (pthread_mutex_init(rmutex, &attr) != 0)
return false;
if (pthread_mutexattr_destroy(&attr) != 0)
return false;
return true;
}
bool
of_rmutex_lock(of_rmutex_t *rmutex)
{
return of_mutex_lock(rmutex);
}
bool
of_rmutex_trylock(of_rmutex_t *rmutex)
{
return of_mutex_trylock(rmutex);
}
bool
of_rmutex_unlock(of_rmutex_t *rmutex)
{
return of_mutex_unlock(rmutex);
}
bool
of_rmutex_free(of_rmutex_t *rmutex)
{
return of_mutex_free(rmutex);
}
#endif
bool
of_condition_new(of_condition_t *condition)
{
return (pthread_cond_init(condition, NULL) == 0);
}
bool
of_condition_signal(of_condition_t *condition)
{
return (pthread_cond_signal(condition) == 0);
}
bool
of_condition_broadcast(of_condition_t *condition)
{
return (pthread_cond_broadcast(condition) == 0);
}
bool
of_condition_wait(of_condition_t *condition, of_mutex_t *mutex)
{
return (pthread_cond_wait(condition, mutex) == 0);
}
bool
of_condition_timed_wait(of_condition_t *condition, of_mutex_t *mutex,
of_time_interval_t timeout)
{
struct timespec ts;
ts.tv_sec = (time_t)timeout;
ts.tv_nsec = lrint((timeout - ts.tv_sec) * 1000000000);
return (pthread_cond_timedwait(condition, mutex, &ts) == 0);
}
bool
of_condition_free(of_condition_t *condition)
{
return (pthread_cond_destroy(condition) == 0);
}