完善日志系统，修复读取配置文件时的内存泄漏，初步添加熔断机制与指数退避机制

c/tools/log/log.c

@@ -6,6 +6,8 @@
 #include <unistd.h>
 #include <time.h>
 #include <errno.h>
+#include <fcntl.h>
+#include <string.h>
 
 int in_log(logs *log,log_manager *self)
 {
@@ -81,15 +83,21 @@ int cleanup(log_manager *self)
     if(self->log ==NULL)
         return 1;
     logs *tobeclean,*loc;
-    sem_wait(&self->log_sem);
+    sem_wait(&self->log_sem);//获取信号量
     loc = self->log;
     self->log = NULL;
-    self->count = 0;
+    self->count = 0;//摘取log链
     sem_post(&self->log_sem);
+    //释放信号量
     while(loc->next !=NULL)
     {
         tobeclean = loc;
         loc = loc->next;
+        int fd = open("log.txt",O_CREAT | O_WRONLY | O_APPEND, 0777);
+        if(fd == -1)
+            perror("file:");
+        write(fd,loc->log,strlen(loc->log));
+        close(fd);
         free(tobeclean);
     }
     free(loc);