ecf2d82159
* Synchronize the code of the rt mart branch to the master branch.
* TTY device
* Add lwP code from rt-smart
* Add vnode in DFS, but DFS will be re-write for rt-smart
* There are three libcpu for rt-smart:
* arm/cortex-a, arm/aarch64
* riscv64
Co-authored-by: Rbb666 <zhangbingru@rt-thread.com>
Co-authored-by: zhkag <zhkag@foxmail.com>
41 lines
668 B
C
41 lines
668 B
C
/*
|
|
* Copyright (c) 2006-2018, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
*/
|
|
|
|
#include <rthw.h>
|
|
#include <rtthread.h>
|
|
#include "lwp_mm.h"
|
|
|
|
static rt_mutex_t mm_lock;
|
|
|
|
void rt_mm_lock(void)
|
|
{
|
|
if (rt_thread_self())
|
|
{
|
|
if (!mm_lock)
|
|
{
|
|
mm_lock = rt_mutex_create("mm_lock", RT_IPC_FLAG_FIFO);
|
|
}
|
|
if (mm_lock)
|
|
{
|
|
rt_mutex_take(mm_lock, RT_WAITING_FOREVER);
|
|
}
|
|
}
|
|
}
|
|
|
|
void rt_mm_unlock(void)
|
|
{
|
|
if (rt_thread_self())
|
|
{
|
|
if (mm_lock)
|
|
{
|
|
rt_mutex_release(mm_lock);
|
|
}
|
|
}
|
|
}
|