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Merge pull request #2680 from BernardXiong/pthreads 

[pthreads] Change the pthreads management.
This commit is contained in:
Bernard Xiong 2019-05-13 12:12:50 +08:00 committed by GitHub
parent 91f6abb765 ab595cc864
commit 9f7cc78b06
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 237 additions and 103 deletions
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6
components/libc/Kconfig
View File

@ -8,6 +8,12 @@ config RT_USING_PTHREADS
bool "Enable pthreads APIs"
default n
if RT_USING_PTHREADS
config PTHREAD_NUM_MAX
int "Maximum number of pthreads"
default 8
endif
if RT_USING_LIBC && RT_USING_DFS
config RT_USING_POSIX
bool "Enable POSIX layer for poll/select, stdin etc"

291
components/libc/pthreads/pthread.c
View File

@ -10,10 +10,121 @@
* 2019-02-07 Bernard Add _pthread_destroy to release pthread resource.
*/
#include <rthw.h>
#include <pthread.h>
#include <sched.h>
#include "pthread_internal.h"
RT_DEFINE_SPINLOCK(pth_lock);
_pthread_data_t *pth_table[PTHREAD_NUM_MAX] = {NULL};
_pthread_data_t *_pthread_get_data(pthread_t thread)
{
RT_DECLARE_SPINLOCK(pth_lock);
_pthread_data_t *ptd;
if (thread >= PTHREAD_NUM_MAX) return NULL;
rt_hw_spin_lock(&pth_lock);
ptd = pth_table[thread];
rt_hw_spin_unlock(&pth_lock);
if (ptd && ptd->magic == PTHREAD_MAGIC) return ptd;
return NULL;
}
pthread_t _pthread_data_get_pth(_pthread_data_t *ptd)
{
int index;
RT_DECLARE_SPINLOCK(pth_lock);
rt_hw_spin_lock(&pth_lock);
for (index = 0; index < PTHREAD_NUM_MAX; index ++)
{
if (pth_table[index] == ptd) break;
}
rt_hw_spin_unlock(&pth_lock);
return index;
}
pthread_t _pthread_data_create(void)
{
int index;
_pthread_data_t *ptd = NULL;
RT_DECLARE_SPINLOCK(pth_lock);
ptd = (_pthread_data_t*)rt_malloc(sizeof(_pthread_data_t));
if (!ptd) return PTHREAD_NUM_MAX;
memset(ptd, 0x0, sizeof(_pthread_data_t));
ptd->canceled = 0;
ptd->cancelstate = PTHREAD_CANCEL_DISABLE;
ptd->canceltype = PTHREAD_CANCEL_DEFERRED;
ptd->magic = PTHREAD_MAGIC;
rt_hw_spin_lock(&pth_lock);
for (index = 0; index < PTHREAD_NUM_MAX; index ++)
{
if (pth_table[index] == NULL)
{
pth_table[index] = ptd;
break;
}
}
rt_hw_spin_unlock(&pth_lock);
/* full of pthreads, clean magic and release ptd */
if (index == PTHREAD_NUM_MAX)
{
ptd->magic = 0x0;
rt_free(ptd);
}
return index;
}
void _pthread_data_destroy(pthread_t pth)
{
RT_DECLARE_SPINLOCK(pth_lock);
_pthread_data_t *ptd = _pthread_get_data(pth);
if (ptd)
{
/* remove from pthread table */
rt_hw_spin_lock(&pth_lock);
pth_table[pth] = NULL;
rt_hw_spin_unlock(&pth_lock);
/* delete joinable semaphore */
if (ptd->joinable_sem != RT_NULL)
rt_sem_delete(ptd->joinable_sem);
/* release thread resource */
if (ptd->attr.stackaddr == RT_NULL)
{
/* release thread allocated stack */
rt_free(ptd->tid->stack_addr);
}
/* clean stack addr pointer */
ptd->tid->stack_addr = RT_NULL;
/*
* if this thread create the local thread data,
* delete it
*/
if (ptd->tls != RT_NULL) rt_free(ptd->tls);
rt_free(ptd->tid);
/* clean magic */
ptd->magic = 0x0;
/* free ptd */
rt_free(ptd);
}
}
int pthread_system_init(void)
{
/* initialize key area */
@ -29,26 +140,11 @@ INIT_COMPONENT_EXPORT(pthread_system_init);
static void _pthread_destroy(_pthread_data_t *ptd)
{
/* delete joinable semaphore */
if (ptd->joinable_sem != RT_NULL)
rt_sem_delete(ptd->joinable_sem);
/* release thread resource */
if (ptd->attr.stackaddr == RT_NULL)
pthread_t pth = _pthread_data_get_pth(ptd);
if (pth != PTHREAD_NUM_MAX)
{
/* release thread allocated stack */
rt_free(ptd->tid->stack_addr);
_pthread_data_destroy(pth);
}
/* clean stack addr pointer */
ptd->tid->stack_addr = RT_NULL;
/*
* if this thread create the local thread data,
* delete it
*/
if (ptd->tls != RT_NULL) rt_free(ptd->tls);
rt_free(ptd->tid);
rt_free(ptd);
return;
}
@ -56,7 +152,10 @@ static void _pthread_destroy(_pthread_data_t *ptd)
static void _pthread_cleanup(rt_thread_t tid)
{
_pthread_data_t *ptd;
ptd = _pthread_get_data(tid);
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)tid->user_data;
RT_ASSERT(ptd != RT_NULL);
/* clear cleanup function */
tid->cleanup = RT_NULL;
@ -84,29 +183,30 @@ static void pthread_entry_stub(void *parameter)
ptd->return_value = value;
}
int pthread_create(pthread_t *tid,
int pthread_create(pthread_t *pid,
const pthread_attr_t *attr,
void *(*start)(void *), void *parameter)
{
int result;
int ret = 0;
void *stack;
char name[RT_NAME_MAX];
static rt_uint16_t pthread_number = 0;
pthread_t pth_id;
_pthread_data_t *ptd;
/* tid shall be provided */
RT_ASSERT(tid != RT_NULL);
/* pid shall be provided */
RT_ASSERT(pid != RT_NULL);
/* allocate posix thread data */
ptd = (_pthread_data_t *)rt_malloc(sizeof(_pthread_data_t));
if (ptd == RT_NULL)
return ENOMEM;
/* clean posix thread data memory */
rt_memset(ptd, 0, sizeof(_pthread_data_t));
ptd->canceled = 0;
ptd->cancelstate = PTHREAD_CANCEL_DISABLE;
ptd->canceltype = PTHREAD_CANCEL_DEFERRED;
ptd->magic = PTHREAD_MAGIC;
pth_id = _pthread_data_create();
if (pth_id == PTHREAD_NUM_MAX)
{
ret = ENOMEM;
goto __exit;
}
/* get pthread data */
ptd = _pthread_get_data(pth_id);
if (attr != RT_NULL)
{
@ -130,20 +230,16 @@ int pthread_create(pthread_t *tid,
if (stack == RT_NULL)
{
rt_free(ptd);
return ENOMEM;
ret = ENOMEM;
goto __exit;
}
/* pthread is a static thread object */
ptd->tid = (rt_thread_t) rt_malloc(sizeof(struct rt_thread));
if (ptd->tid == RT_NULL)
{
if (ptd->attr.stackaddr == 0)
rt_free(stack);
rt_free(ptd);
return ENOMEM;
ret = ENOMEM;
goto __exit;
}
if (ptd->attr.detachstate == PTHREAD_CREATE_JOINABLE)
@ -151,11 +247,8 @@ int pthread_create(pthread_t *tid,
ptd->joinable_sem = rt_sem_create(name, 0, RT_IPC_FLAG_FIFO);
if (ptd->joinable_sem == RT_NULL)
{
if (ptd->attr.stackaddr != 0)
rt_free(stack);
rt_free(ptd);
return ENOMEM;
ret = ENOMEM;
goto __exit;
}
}
else
@ -172,37 +265,29 @@ int pthread_create(pthread_t *tid,
stack, ptd->attr.stacksize,
ptd->attr.schedparam.sched_priority, 5) != RT_EOK)
{
if (ptd->attr.stackaddr == 0)
rt_free(stack);
if (ptd->joinable_sem != RT_NULL)
rt_sem_delete(ptd->joinable_sem);
rt_free(ptd);
return EINVAL;
ret = EINVAL;
goto __exit;
}
/* set pthread id */
*tid = ptd->tid;
*pid = pth_id;
/* set pthread cleanup function and ptd data */
(*tid)->cleanup = _pthread_cleanup;
(*tid)->user_data = (rt_uint32_t)ptd;
ptd->tid->cleanup = _pthread_cleanup;
ptd->tid->user_data = (rt_uint32_t)ptd;
/* start thread */
result = rt_thread_startup(*tid);
if (result == RT_EOK)
if (rt_thread_startup(ptd->tid) == RT_EOK)
return 0;
/* start thread failed */
rt_thread_detach(ptd->tid);
if (ptd->attr.stackaddr == 0)
rt_free(stack);
if (ptd->joinable_sem != RT_NULL)
rt_sem_delete(ptd->joinable_sem);
ret = EINVAL;
rt_free(ptd);
return EINVAL;
__exit:
if (pth_id != PTHREAD_NUM_MAX)
_pthread_data_destroy(pth_id);
return ret;
}
RTM_EXPORT(pthread_create);
@ -221,7 +306,7 @@ int pthread_detach(pthread_t thread)
goto __exit;
}
if ((thread->stat & RT_THREAD_STAT_MASK) == RT_THREAD_CLOSE)
if ((ptd->tid->stat & RT_THREAD_STAT_MASK) == RT_THREAD_CLOSE)
{
/* this defunct pthread is not handled by idle */
if (rt_sem_trytake(ptd->joinable_sem) != RT_EOK)
@ -270,13 +355,13 @@ int pthread_join(pthread_t thread, void **value_ptr)
_pthread_data_t *ptd;
rt_err_t result;
if (thread == rt_thread_self())
ptd = _pthread_get_data(thread);
if (ptd && ptd->tid == rt_thread_self())
{
/* join self */
return EDEADLK;
}
ptd = _pthread_get_data(thread);
if (ptd->attr.detachstate == PTHREAD_CREATE_DETACHED)
return EINVAL; /* join on a detached pthread */
@ -299,13 +384,32 @@ int pthread_join(pthread_t thread, void **value_ptr)
}
RTM_EXPORT(pthread_join);
pthread_t pthread_self (void)
{
rt_thread_t tid;
_pthread_data_t *ptd;
tid = rt_thread_self();
if (tid == NULL) return PTHREAD_NUM_MAX;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
return _pthread_data_get_pth(ptd);
}
RTM_EXPORT(pthread_self);
void pthread_exit(void *value)
{
_pthread_data_t *ptd;
_pthread_cleanup_t *cleanup;
extern _pthread_key_data_t _thread_keys[PTHREAD_KEY_MAX];
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
rt_enter_critical();
/* disable cancel */
@ -382,7 +486,15 @@ RTM_EXPORT(pthread_atfork);
int pthread_kill(pthread_t thread, int sig)
{
#ifdef RT_USING_SIGNALS
return rt_thread_kill(thread, sig);
_pthread_data_t *ptd;
ptd = _pthread_get_data(thread);
if (ptd)
{
return rt_thread_kill(ptd->tid, sig);
}
return EINVAL;
#else
return ENOSYS;
#endif
@ -401,8 +513,10 @@ void pthread_cleanup_pop(int execute)
_pthread_data_t *ptd;
_pthread_cleanup_t *cleanup;
/* get posix thread data */
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
if (execute)
@ -428,8 +542,10 @@ void pthread_cleanup_push(void (*routine)(void *), void *arg)
_pthread_data_t *ptd;
_pthread_cleanup_t *cleanup;
/* get posix thread data */
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
cleanup = (_pthread_cleanup_t *)rt_malloc(sizeof(_pthread_cleanup_t));
@ -478,8 +594,10 @@ int pthread_setcancelstate(int state, int *oldstate)
{
_pthread_data_t *ptd;
/* get posix thread data */
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return EINVAL;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
if ((state == PTHREAD_CANCEL_ENABLE) || (state == PTHREAD_CANCEL_DISABLE))
@ -499,8 +617,10 @@ int pthread_setcanceltype(int type, int *oldtype)
{
_pthread_data_t *ptd;
/* get posix thread data */
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return EINVAL;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
if ((type != PTHREAD_CANCEL_DEFERRED) && (type != PTHREAD_CANCEL_ASYNCHRONOUS))
@ -519,8 +639,10 @@ void pthread_testcancel(void)
int cancel = 0;
_pthread_data_t *ptd;
/* get posix thread data */
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != RT_NULL);
if (ptd->cancelstate == PTHREAD_CANCEL_ENABLE)
@ -534,14 +656,14 @@ int pthread_cancel(pthread_t thread)
{
_pthread_data_t *ptd;
/* cancel self */
if (thread == rt_thread_self())
return 0;
/* get posix thread data */
ptd = _pthread_get_data(thread);
RT_ASSERT(ptd != RT_NULL);
/* cancel self */
if (ptd->tid == rt_thread_self())
return 0;
/* set canceled */
if (ptd->cancelstate == PTHREAD_CANCEL_ENABLE)
{
@ -555,10 +677,11 @@ int pthread_cancel(pthread_t thread)
* thread (pthread_cleanup), it will move to defunct
* thread list and wait for handling in idle thread.
*/
rt_thread_detach(thread);
rt_thread_detach(ptd->tid);
}
}
return 0;
}
RTM_EXPORT(pthread_cancel);

7
components/libc/pthreads/pthread.h
View File

@ -32,7 +32,7 @@ extern "C" {
#define PTHREAD_EXPLICIT_SCHED 0
#define PTHREAD_INHERIT_SCHED 1
typedef rt_thread_t pthread_t;
typedef long pthread_t;
typedef long pthread_condattr_t;
typedef long pthread_rwlockattr_t;
typedef long pthread_mutexattr_t;
@ -172,10 +172,7 @@ rt_inline int pthread_equal (pthread_t t1, pthread_t t2)
return t1 == t2;
}
rt_inline pthread_t pthread_self (void)
{
return rt_thread_self();
}
pthread_t pthread_self (void);
void pthread_exit (void *value_ptr);
int pthread_once(pthread_once_t * once_control, void (*init_routine) (void));

2
components/libc/pthreads/pthread_cond.c
View File

@ -189,7 +189,7 @@ rt_err_t _pthread_cond_timedwait(pthread_cond_t *cond,
pthread_cond_init(cond, RT_NULL);
/* The mutex was not owned by the current thread at the time of the call. */
if (mutex->lock.owner != pthread_self())
if (mutex->lock.owner != rt_thread_self())
return -RT_ERROR;
/* unlock a mutex failed */
if (pthread_mutex_unlock(mutex) != 0)

16
components/libc/pthreads/pthread_internal.h
View File

@ -30,6 +30,10 @@ struct _pthread_key_data
};
typedef struct _pthread_key_data _pthread_key_data_t;
#ifndef PTHREAD_NUM_MAX
#define PTHREAD_NUM_MAX 32
#endif
#define PTHREAD_MAGIC 0x70746873
struct _pthread_data
{
@ -56,17 +60,7 @@ struct _pthread_data
};
typedef struct _pthread_data _pthread_data_t;
rt_inline _pthread_data_t *_pthread_get_data(pthread_t thread)
{
_pthread_data_t *ptd;
RT_ASSERT(thread != RT_NULL);
ptd = (_pthread_data_t *)thread->user_data;
RT_ASSERT(ptd != RT_NULL);
RT_ASSERT(ptd->magic == PTHREAD_MAGIC);
return ptd;
}
_pthread_data_t *_pthread_get_data(pthread_t thread);
int clock_time_to_tick(const struct timespec *time);

10
components/libc/pthreads/pthread_tls.c
View File

@ -22,7 +22,10 @@ void *pthread_getspecific(pthread_key_t key)
{
struct _pthread_data* ptd;
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return NULL;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != NULL);
if (ptd->tls == NULL)
@ -39,7 +42,10 @@ int pthread_setspecific(pthread_key_t key, const void *value)
{
struct _pthread_data* ptd;
ptd = _pthread_get_data(rt_thread_self());
if (rt_thread_self() == NULL) return EINVAL;
/* get pthread data from user data of thread */
ptd = (_pthread_data_t *)rt_thread_self()->user_data;
RT_ASSERT(ptd != NULL);
/* check tls area */

8
include/rthw.h
View File

@ -157,6 +157,7 @@ extern rt_hw_spinlock_t _rt_critical_lock;
(rt_hw_spinlock_t) __RT_HW_SPIN_LOCK_INITIALIZER(lockname)
#define RT_DEFINE_SPINLOCK(x) rt_hw_spinlock_t x = __RT_HW_SPIN_LOCK_UNLOCKED(x)
#define RT_DECLARE_SPINLOCK(x)
/**
* ipi function
@ -172,6 +173,13 @@ void rt_hw_secondary_cpu_up(void);
* secondary cpu idle function
*/
void rt_hw_secondary_cpu_idle_exec(void);
#else
#define RT_DEFINE_SPINLOCK(x)
#define RT_DECLARE_SPINLOCK(x) rt_ubase_t x
#define rt_hw_spin_lock(lock) *(lock) = rt_hw_interrupt_disable()
#define rt_hw_spin_unlock(lock) rt_hw_interrupt_enable(*(lock))
#endif