Spinlock

The spinlock in Melon will use different implementations according to different compilers and different CPU architectures.

This module is not supported in the MSVC.

Header file

#include "mln_utils.h"
#include "mln_types.h"

Module

utils

Functions/Macros

The lock_ptr in the following functions are of type mln_spin_t, which is defined in mln_types.h.

mln_spin_init

mln_spin_init(lock_ptr)

Description: Initialize lock lock_ptr.

Return value: return 0 on success, otherwise return not 0

mln_spin_destroy

mln_spin_destroy(lock_ptr)

Description: Destroy the lock lock_ptr.

Return value: return 0 on success, otherwise return not 0

mln_spin_trylock

 mln_spin_trylock(lock_ptr)

Description: Attempt to lock a spinlock. If the lock resource is occupied, it will return immediately.

Return value: return 0 if the lock is successful, otherwise return non-0

mln_spin_lock

mln_spin_lock(lock_ptr)

Description: Lock the lock resource. If the lock resource is occupied, wait for it to become available and lock it.

Return value: none

mln_spin_unlock

mln_spin_unlock(lock_ptr)

Description: Release the lock.

Return value: none

Example

his is only to show the use, and the rationality of the example single thread is not considered for the time being.

#include "mln_utils.h"
#include "mln_types.h"

int main(int argc, char *argv[])
{
    mln_spin_t lock;

    mln_spin_init(&lock);
    mln_spin_lock(&lock);
    mln_spin_unlock(&lock);
    mln_spin_destroy(&lock);
    return 0;
}