109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2020 Intel Corporation.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <kernel.h>
|
|
#include <kernel_structs.h>
|
|
#include <toolchain.h>
|
|
#include <ksched.h>
|
|
#include <wait_q.h>
|
|
#include <syscall_handler.h>
|
|
|
|
static struct k_spinlock lock;
|
|
|
|
int z_impl_k_condvar_init(struct k_condvar *condvar)
|
|
{
|
|
z_waitq_init(&condvar->wait_q);
|
|
z_object_init(condvar);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_USERSPACE
|
|
int z_vrfy_k_condvar_init(struct k_condvar *condvar)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ_INIT(condvar, K_OBJ_CONDVAR));
|
|
return z_impl_k_condvar_init(condvar);
|
|
}
|
|
#include <syscalls/k_condvar_init_mrsh.c>
|
|
#endif
|
|
|
|
int z_impl_k_condvar_signal(struct k_condvar *condvar)
|
|
{
|
|
k_spinlock_key_t key = k_spin_lock(&lock);
|
|
struct k_thread *thread = z_unpend_first_thread(&condvar->wait_q);
|
|
|
|
if (thread != NULL) {
|
|
arch_thread_return_value_set(thread, 0);
|
|
z_ready_thread(thread);
|
|
z_reschedule(&lock, key);
|
|
} else {
|
|
k_spin_unlock(&lock, key);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_USERSPACE
|
|
int z_vrfy_k_condvar_signal(struct k_condvar *condvar)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(condvar, K_OBJ_CONDVAR));
|
|
return z_impl_k_condvar_signal(condvar);
|
|
}
|
|
#include <syscalls/k_condvar_signal_mrsh.c>
|
|
#endif
|
|
|
|
int z_impl_k_condvar_broadcast(struct k_condvar *condvar)
|
|
{
|
|
struct k_thread *pending_thread;
|
|
k_spinlock_key_t key;
|
|
int woken = 0;
|
|
|
|
key = k_spin_lock(&lock);
|
|
|
|
/* wake up any threads that are waiting to write */
|
|
while ((pending_thread = z_unpend_first_thread(&condvar->wait_q)) !=
|
|
NULL) {
|
|
arch_thread_return_value_set(pending_thread, 0);
|
|
z_ready_thread(pending_thread);
|
|
woken++;
|
|
}
|
|
|
|
z_reschedule(&lock, key);
|
|
|
|
return woken;
|
|
}
|
|
#ifdef CONFIG_USERSPACE
|
|
int z_vrfy_k_condvar_broadcast(struct k_condvar *condvar)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(condvar, K_OBJ_CONDVAR));
|
|
return z_impl_k_condvar_broadcast(condvar);
|
|
}
|
|
#include <syscalls/k_condvar_broadcast_mrsh.c>
|
|
#endif
|
|
|
|
int z_impl_k_condvar_wait(struct k_condvar *condvar, struct k_mutex *mutex,
|
|
k_timeout_t timeout)
|
|
{
|
|
k_spinlock_key_t key;
|
|
int ret;
|
|
|
|
key = k_spin_lock(&lock);
|
|
k_mutex_unlock(mutex);
|
|
|
|
ret = z_pend_curr(&lock, key, &condvar->wait_q, timeout);
|
|
k_mutex_lock(mutex, K_FOREVER);
|
|
|
|
return ret;
|
|
}
|
|
#ifdef CONFIG_USERSPACE
|
|
int z_vrfy_k_condvar_wait(struct k_condvar *condvar, struct k_mutex *mutex,
|
|
k_timeout_t timeout)
|
|
{
|
|
Z_OOPS(Z_SYSCALL_OBJ(condvar, K_OBJ_CONDVAR));
|
|
Z_OOPS(Z_SYSCALL_OBJ(mutex, K_OBJ_MUTEX));
|
|
return z_impl_k_condvar_wait(condvar, mutex, timeout);
|
|
}
|
|
#include <syscalls/k_condvar_wait_mrsh.c>
|
|
#endif
|