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disable interrupts while locked

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uosfz 2025-02-12 20:05:05 +01:00
parent bf16ead21f
commit 43f23cd7a2
Signed by: uosfz
SSH key fingerprint: SHA256:FlktuluyhTQg3jHZNLKwxOOC5hbfrUXM0tz3IA3lGJo
1 changed files with 3 additions and 1 deletions
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4
src/sync.c
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@ -1,11 +1,13 @@
#include "sync.h" #include "sync.h"
void spin_lock(struct spinlock *s) { void spin_lock(struct spinlock *s) {
__asm__ ("cli" :: );
while (atomic_exchange_explicit(&s->lock, 1, memory_order_acquire)) { while (atomic_exchange_explicit(&s->lock, 1, memory_order_acquire)) {
// spin __asm__ ("pause" :: );
} }
} }
void spin_unlock(struct spinlock *s) { void spin_unlock(struct spinlock *s) {
atomic_store_explicit(&s->lock, 0, memory_order_release); atomic_store_explicit(&s->lock, 0, memory_order_release);
__asm__ ("sti" :: );
} }