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kernel: spinlocks

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Matheus
2023-04-23 17:12:05 -03:00
parent f16091656a
commit 0394165361
8 changed files with 59 additions and 30 deletions
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kernel-src/mm/slab.c
+6 -8
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@@ -125,7 +125,7 @@ static slab_t *returnobject(scache_t *cache, void *obj) {
}
void *slab_allocate(scache_t *cache) {
// TODO lock
spinlock_acquire(&cache->lock);
slab_t *slab = NULL;
if (cache->partial != NULL)
slab = cache->partial;
@@ -170,12 +170,12 @@ void *slab_allocate(scache_t *cache) {
}
cleanup:
// TODO unlock
spinlock_release(&cache->lock);
return ret;
}
void slab_free(scache_t *cache, void *addr) {
// TODO lock
spinlock_acquire(&cache->lock);
slab_t *slab = returnobject(cache, addr);
__assert(slab);
@@ -205,8 +205,7 @@ void slab_free(scache_t *cache, void *addr) {
slab->prev = NULL;
cache->partial = slab;
}
// TODO unlock
spinlock_release(&cache->lock);
}
scache_t *slab_newcache(size_t size, size_t alignment, void (*ctor)(scache_t *, void *), void (*dtor)(scache_t *, void *)) {
@@ -227,6 +226,7 @@ scache_t *slab_newcache(size_t size, size_t alignment, void (*ctor)(scache_t *,
cache->full = NULL;
cache->empty = NULL;
cache->partial = NULL;
SPINLOCK_INIT(cache->lock);
printf("slab: new cache: size %lu align %lu truesize %lu objcount %lu\n", cache->size, cache->alignment, cache->truesize, cache->slabobjcount);
@@ -256,13 +256,11 @@ static size_t purge(scache_t *cache, size_t maxcount){
}
void slab_freecache(scache_t *cache) {
// TODO lock
spinlock_acquire(&cache->lock);
__assert(cache->partial == NULL);
__assert(cache->full == NULL);
purge(cache, (size_t)-1);
slab_free(&selfcache, cache);
// TODO unlock
}