Logging: Introduce LS_NUM_TYPES and use it.

[libucw.git] / ucw / lib.h

diff --git a/ucw/lib.h b/ucw/lib.h
index a62281327f4214a294ef506043b227f4af1620ac..0190c5a377c4cd2d02ed42c5f66874d65a0a1d1e 100644 (file)
--- a/ucw/lib.h
+++ b/ucw/lib.h
@@ -23,14 +23,10 @@
 #define OFFSETOF(s, i) ((unsigned int) (uintptr_t) PTR_TO(s, i))       /** Offset of item @i from the start of structure @s **/
 #define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))         /** Given a pointer @p to item @i of structure @s, return a pointer to the start of the struct. **/
 
-/**
- * Align an integer @s to the nearest higher multiple of @a (which should be a power of two)
- **/
+/** Align an integer @s to the nearest higher multiple of @a (which should be a power of two) **/
 #define ALIGN_TO(s, a) (((s)+a-1)&~(a-1))
 
-/**
- * Align a pointer @p to the nearest higher multiple of @s.
- **/
+/** Align a pointer @p to the nearest higher multiple of @s. **/
 #define ALIGN_PTR(p, s) ((uintptr_t)(p) % (s) ? (typeof(p))((uintptr_t)(p) + (s) - (uintptr_t)(p) % (s)) : (p))
 
 #define UNALIGNED_PART(ptr, type) (((uintptr_t) (ptr)) % sizeof(type))
@@ -104,9 +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 L_SIGHANDLER 0x80000000                /** Avoid operations that are unsafe in signal handlers **/
+#define LOG_LEVEL_NAMES P(DEBUG) P(INFO) P(WARN) P(ERROR) P(INFO_R) P(WARN_R) P(ERROR_R) P(FATAL)
+
+// 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.