move msg_head related to fifo.h

struct msg_head related are specific to fifo
so move them to fifo.h

Signed-off-by: sheeaza <winsdenny@outlook.com>

Author: sheeaza

src/fifo.h

@@ -4,6 +4,19 @@
 #include <stdatomic.h>
 #include <stdio.h>
 
+enum msg_head_flag {
+    MSG_HEAD_FLAG_RESERVED = 1,
+    MSG_HEAD_FLAG_COMMITED,
+    MSG_HEAD_FLAG_DISCARDED,
+};
+
+struct msg_head {
+    unsigned total_size;
+    atomic_uint flags;
+
+    char data[];
+};
+
 /* todo: optimize page size macro */
 #define PAGE_SIZE 4096
 
@@ -62,4 +75,9 @@ static inline unsigned int fifo_unused(struct fifo *fifo)
     return fifo_size(fifo) - fifo_used(fifo);
 }
 
+static inline unsigned int msg_head_size(void)
+{
+    return sizeof(struct msg_head);
+}
+
 #endif

src/misc.h

@@ -3,7 +3,6 @@
 
 #include <pthread.h>
 #include <stdalign.h>
-#include <stdatomic.h>
 #include <stddef.h>
 
 #define container_of(ptr, type, member) ((type *)((char *)(ptr) - offsetof(type, member)))
@@ -26,19 +25,6 @@ enum _msg_cmd {
     MSG_CMD_FLUSH,
 };
 
-enum msg_head_flag {
-    MSG_HEAD_FLAG_RESERVED = 1,
-    MSG_HEAD_FLAG_COMMITED,
-    MSG_HEAD_FLAG_DISCARDED,
-};
-
-struct msg_head {
-    unsigned total_size;
-    atomic_uint flags;
-
-    char data[];
-};
-
 struct msg_type {
     unsigned long val;
 };
@@ -83,11 +69,6 @@ struct zlog_output_data {
     } time_str;
 };
 
-static inline unsigned int msg_head_size(void)
-{
-    return sizeof(struct msg_head);
-}
-
 static inline unsigned int msg_usr_str_size(void)
 {
     return sizeof(struct msg_usr_str);