Mirrors/libhermit
1
0
Fork 0
mirror of https://github.com/hermitcore/libhermit.git synced 2025-03-09 00:00:03 +01:00
Code Issues Releases Wiki Activity

hermit/spinlock: fix documentation

Browse source
This commit is contained in:
daniel-k 2016-08-29 16:20:35 +02:00
parent 321d86b466
commit df4f685b6c
1 changed files with 6 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
hermit/include/hermit/spinlock.h
View file

@ -173,13 +173,13 @@ inline static int spinlock_irqsave_destroy(spinlock_irqsave_t* s) {
return 0;
}
/** @brief Unlock an irqsave spinlock on exit of critical section
/** @brief Lock spinlock on entry of critical section and disable interrupts
* @return
* - 0 on success
* - -EINVAL (-22) on failure
*/
inline static int spinlock_irqsave_lock(spinlock_irqsave_t* s) {
uint32_t flags;
uint8_t flags;
int32_t ticket;
if (BUILTIN_EXPECT(!s, 0))
@ -191,14 +191,10 @@ inline static int spinlock_irqsave_lock(spinlock_irqsave_t* s) {
return 0;
}
#if 1
ticket = atomic_int32_inc(&s->queue);
while (atomic_int32_read(&s->dequeue) != ticket) {
PAUSE;
}
#else
while( atomic_int32_test_and_set(&s->dequeue,0) );
#endif
s->coreid = CORE_ID;
s->flags = flags;
@ -207,13 +203,13 @@ inline static int spinlock_irqsave_lock(spinlock_irqsave_t* s) {
return 0;
}
/** @brief Unlock irqsave spinlock on exit of critical section and re-enable interrupts
/** @brief Unlock spinlock on exit of critical section and re-enable interrupts
* @return
* - 0 on success
* - -EINVAL (-22) on failure
*/
inline static int spinlock_irqsave_unlock(spinlock_irqsave_t* s) {
uint32_t flags;
uint8_t flags;
if (BUILTIN_EXPECT(!s, 0))
return -EINVAL;
@ -223,11 +219,9 @@ inline static int spinlock_irqsave_unlock(spinlock_irqsave_t* s) {
flags = s->flags;
s->coreid = (uint32_t) -1;
s->flags = 0;
#if 1
atomic_int32_inc(&s->dequeue);
#else
atomic_int32_set(&s->dequeue,1);
#endif
irq_nested_enable(flags);
}