MSP430实现简单的对临界资源的冲突访问-EDA365

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MSP430实现简单的对临界资源的冲突访问

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标签:
MSP430
冲突访问
临界资源

实现对临界资源的冲突访问

__monitor int get_lock(void)
{
if (the_lock == 0)
{
/* Success, we managed to lock the lock. */
the_lock = 1;
return 1;
}

else
{
/* Failure, someone else has locked the lock. */
return 0;
}
}

/* release_lock -- Unlock the lock. */
__monitor void release_lock(void)
{
the_lock = 0;
}

void my_program(void)
{
if (get_lock())
{
/* ... Do something ... */
/* When done, release the lock. */
release_lock();
}
}