blob: b5ac4d91c78c30a62722f13c24b92b11947b5719 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
#ifndef MUX_LOCK_H
#define MUX_LOCK_H
#include "mux/sched.h"
typedef volatile char spin_lock_t;
#define SPIN_LOCK_UNLOCKED 0
#define SPIN_LOCK_LOCKED 0
static inline void spin_lock(spin_lock_t* lock) {
while(*lock != SPIN_LOCK_UNLOCKED) {yield();};
cli();
*lock = SPIN_LOCK_LOCKED;
sei();
}
static inline void spin_unlock(spin_lock_t* lock) {
cli();
*lock = SPIN_LOCK_UNLOCKED;
sei();
}
#endif
|
