use std::unique_ptr

selfdrive/logcatd/logcatd_android.cc

@@ -1,6 +1,8 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 
+#include <memory>
+
 #include <android/log.h>
 #include <log/logger.h>
 #include <log/logprint.h>
@@ -17,29 +19,28 @@ int main() {
   struct timespec cur_time;
   clock_gettime(CLOCK_REALTIME, &cur_time);
   log_time last_log_time(cur_time);
-  logger_list *logger_list = nullptr;
 
   while (!do_exit) {
     // setup android logging
-    if (!logger_list) {
+    std::unique_ptr<logger_list, decltype(&android_logger_list_free)> logger_list(
-      logger_list = android_logger_list_alloc_time(ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, last_log_time, 0);
+        android_logger_list_alloc_time(ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, last_log_time, 0),
-    }
+        &android_logger_list_free);
     assert(logger_list);
 
-    struct logger *main_logger = android_logger_open(logger_list, LOG_ID_MAIN);
+    struct logger *main_logger = android_logger_open(logger_list.get(), LOG_ID_MAIN);
     assert(main_logger);
-    struct logger *radio_logger = android_logger_open(logger_list, LOG_ID_RADIO);
+    struct logger *radio_logger = android_logger_open(logger_list.get(), LOG_ID_RADIO);
     assert(radio_logger);
-    struct logger *system_logger = android_logger_open(logger_list, LOG_ID_SYSTEM);
+    struct logger *system_logger = android_logger_open(logger_list.get(), LOG_ID_SYSTEM);
     assert(system_logger);
-    struct logger *crash_logger = android_logger_open(logger_list, LOG_ID_CRASH);
+    struct logger *crash_logger = android_logger_open(logger_list.get(), LOG_ID_CRASH);
     assert(crash_logger);
-    struct logger *kernel_logger = android_logger_open(logger_list, (log_id_t)5); // LOG_ID_KERNEL
+    struct logger *kernel_logger = android_logger_open(logger_list.get(), (log_id_t)5); // LOG_ID_KERNEL
     assert(kernel_logger);
 
     while (!do_exit) {
       log_msg log_msg;
-      int err = android_logger_list_read(logger_list, &log_msg);
+      int err = android_logger_list_read(logger_list.get(), &log_msg);
       if (err <= 0) break;
 
       AndroidLogEntry entry;
@@ -61,14 +62,8 @@ int main() {
       pm.send("androidLog", msg);
     }
 
-    android_logger_list_free(logger_list);
-    logger_list = NULL;
     util::sleep_for(500);
   }
 
-  if (logger_list) {
-    android_logger_list_free(logger_list);
-  }
-
   return 0;
 }