Logging: Introduce LS_NUM_TYPES and use it.

[libucw.git] / ucw / lib.h

diff --git a/ucw/lib.h b/ucw/lib.h
index 5167e24e05357ebab137ab15c2bfee94a796ee0f..0190c5a377c4cd2d02ed42c5f66874d65a0a1d1e 100644 (file)
--- a/ucw/lib.h
+++ b/ucw/lib.h
@@ -100,11 +100,16 @@ enum log_levels {                 /** The available log levels to pass to msg() and friends. *
   L_WARN_R,                            // 'w'   (e.g., a packet received via network)
   L_ERROR_R,                           // 'e'
   L_FATAL,                             // '!' - Fatal error
+  L_MAX
 };
 
 #define LOG_LEVEL_NAMES P(DEBUG) P(INFO) P(WARN) P(ERROR) P(INFO_R) P(WARN_R) P(ERROR_R) P(FATAL)
 
-#define L_SIGHANDLER 0x80000000                /** Avoid operations that are unsafe in signal handlers **/
+// Return the letter associated with a given severity level
+#define LS_LEVEL_LETTER(level) ("DIWEiwe!###"[( level )])
+
+#define L_SIGHANDLER   0x80000000      /** Avoid operations that are unsafe in signal handlers **/
+#define L_LOGGER_ERR   0x40000000      /** Used internally to avoid infinite reporting of logging errors **/
 
 /**
  * This is the basic printf-like function for logging a message.