winamp/Src/replicant/nu/lfmpscq.h

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2024-09-24 13:54:57 +01:00
#pragma once
#include "queue_node.h"
/* lock free unbounded multiple producer, single consumer queue */
#ifdef __cplusplus
extern "C" {
#endif
typedef struct mpscq_struct_t
{
queue_node_t * volatile head;
queue_node_t *tail;
queue_node_t stub;
} mpscq_t;
#define MPSCQ_STATIC_INIT(self) {&self.stub, &self.stub, {0}}
void mpscq_init(mpscq_t* self);
int mpscq_push(mpscq_t *self, queue_node_t *n);
queue_node_t *mpscq_pop(mpscq_t *self); /* returns (queue_node_t *)1 if the queue is busy */
#ifdef __cplusplus
}
#endif