uring落盘的无锁队列修改

diskuring/diskuring.h

@@ -9,7 +9,7 @@
 #include <errno.h>
 #include <string.h>
 #include <stdio.h>
-
+#include <stdatomic.h>
 
 typedef enum { TASK_READ, TASK_WRITE } task_op_t;
 
@@ -24,30 +24,28 @@ typedef struct task {
     struct iovec *iovs;  // iovec 数组
     int iovcnt;          // iovec 数量
 
-    pthread_mutex_t m;
-    pthread_cond_t  cv;
-
     struct task *next;
 } task_t;
 
+typedef struct {
+    _Atomic(task_t *) head;
+} task_stack_t;
+
+typedef struct {
+    _Atomic(task_t *) head;
+} destroy_queue_t;
+
 typedef struct {
     struct io_uring ring;
     pthread_t th;
 
-    pthread_mutex_t q_m;
-    pthread_cond_t  q_cv;
-    task_t *q_head, *q_tail;
+    int event_fd;
     
     int stop;
-    atomic_int in_flight;
+    _Atomic int in_flight;
     int max_in_flight; 
 } iouring_ctx_t;
 
-typedef struct {
-    task_t *head;
-    pthread_mutex_t lock;
-} destroy_queue_t;
-
 
 void task_init(task_t *t);
 void task_finish(task_t *t, int res);