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Matheus
28 lines
773 B
C
28 lines
773 B
C
#ifndef _RESOURCE_ALLOCATOR_H
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#define _RESOURCE_ALLOCATOR_H
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// simple FIFO allocator for an arbritary resource
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#include <kernel/scheduler.h>
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#include <list.h>
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#include <spinlock.h>
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typedef struct resource_allocator_waiter_t {
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size_t requested;
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thread_t *thread;
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list_node_t list_node;
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} resource_allocator_waiter_t;
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typedef struct {
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spinlock_t spinlock; // a spinlock is used to allow freeing in an interrupt context
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list_node_t queue;
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size_t resource_current;
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size_t allocate_max;
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} resource_allocator_t;
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void resource_allocator_init(resource_allocator_t *allocator, size_t resource_total, size_t allocate_max);
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size_t resource_allocate(resource_allocator_t *allocator, size_t count);
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void resource_free(resource_allocator_t *allocator, size_t count);
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#endif
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