主从同步性能优化，主从同步性能测试。

diskuring/diskuring.h.nothread

@@ -0,0 +1,50 @@
+#ifndef __DISK_IOURING_H__
+#define __DISK_IOURING_H__
+
+#include <liburing.h>
+#include <pthread.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+
+#define BATCH_SIZE  256
+typedef enum { TASK_READ, TASK_WRITE } task_op_t;
+
+typedef struct task {
+    task_op_t op;
+    int fd;
+    off_t off;
+
+    int res;          // cqe->res
+    int done;         // 0/1
+
+    struct iovec *iovs;  // iovec 数组
+    int iovcnt;          // iovec 数量
+
+    struct task *next;
+} task_t;
+
+typedef struct {
+    struct io_uring ring;
+    int pending_count;
+
+    task_t *head;
+    task_t *tail;
+} iouring_ctx_t;
+
+void task_init(task_t *t);
+void task_finish(task_t *t, int res);
+void task_destroy(task_t *t);
+
+int iouring_init(iouring_ctx_t *ctx, unsigned entries);
+void iouring_shutdown(iouring_ctx_t *ctx);
+
+task_t* submit_write(iouring_ctx_t *ctx, int fd, void **bufs, size_t *lens, int count, off_t off);
+void iouring_tick(iouring_ctx_t *ctx);
+
+extern iouring_ctx_t global_uring_ctx;
+
+#endif