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resource allocator: make interrupt safe

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Matheus
2026-02-12 16:31:07 -03:00
parent b3d5bf5586
commit 03b3ef8377
2 changed files with 13 additions and 12 deletions
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kernel-src/include/resource_allocator.h
+3 -3
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@@ -4,7 +4,7 @@
// simple FIFO allocator for an arbritary resource
#include <kernel/scheduler.h>
#include <mutex.h>
#include <spinlock.h>
// TODO move this to a proper dequeue abstraction
typedef struct resource_allocator_waiter_t {
@@ -14,7 +14,7 @@ typedef struct resource_allocator_waiter_t {
} resource_allocator_waiter_t;
typedef struct {
mutex_t mutex;
spinlock_t spinlock; // a spinlock is used to allow freeing in an interrupt context
resource_allocator_waiter_t *queue;
resource_allocator_waiter_t *tail;
size_t resource_current;
@@ -22,7 +22,7 @@ typedef struct {
} resource_allocator_t;
void resource_allocator_init(resource_allocator_t *allocator, size_t resource_total, size_t allocate_max);
void resource_allocate(resource_allocator_t *allocator, size_t count);
size_t resource_allocate(resource_allocator_t *allocator, size_t count);
void resource_free(resource_allocator_t *allocator, size_t count);
#endif