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35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
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#pragma once
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#include "nu/queue_node.h"
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#include <windows.h>
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#include <malloc.h>
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/* lock free stack object
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multiple threads can push and pop without locking
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note that order is not guaranteed. that is, if Thread 1 calls Insert before Thread 2, Thread 2's item might still make it in before.
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*/
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#ifdef __cplusplus
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#define NU_LIFO_INLINE inline
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extern "C" {
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#else
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#define NX_ATOMIC_INLINE
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#endif
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typedef SLIST_HEADER lifo_t;
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/* use this to allocate an object that will go into this */
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NU_LIFO_INLINE static queue_node_t *lifo_malloc(size_t bytes) { return (queue_node_t *)_aligned_malloc(bytes, MEMORY_ALLOCATION_ALIGNMENT); }
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NU_LIFO_INLINE static void lifo_free(queue_node_t *ptr) { _aligned_free(ptr); }
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NU_LIFO_INLINE static lifo_t *lifo_create() { return (lifo_t *)_aligned_malloc(sizeof(SLIST_HEADER), MEMORY_ALLOCATION_ALIGNMENT); }
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NU_LIFO_INLINE static void lifo_destroy(lifo_t *lifo) { _aligned_free(lifo); }
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NU_LIFO_INLINE static void lifo_init(lifo_t *lifo) { InitializeSListHead(lifo); }
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NU_LIFO_INLINE static void lifo_push(lifo_t *lifo, queue_node_t *cl) { InterlockedPushEntrySList(lifo, cl); }
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NU_LIFO_INLINE static queue_node_t *lifo_pop(lifo_t *lifo) { return InterlockedPopEntrySList(lifo); }
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#ifdef __cplusplus
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}
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#endif
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