X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=share%2Fusterr.h;h=93333e557ca6edca06d4975ad9694aeeacf1495b;hb=d61bfa72a22d7faf64c1babe1bc663aeb280717b;hp=a2f915bdad41139a3765ff6c3c2662289bf08cb7;hpb=5f54827b88b093974e4bf58f67490036718644c7;p=lttng-ust.git

diff --git a/share/usterr.h b/share/usterr.h
index a2f915bd..93333e55 100644
--- a/share/usterr.h
+++ b/share/usterr.h
@@ -1,10 +1,45 @@
 #ifndef USTERR_H
 #define USTERR_H
 
-#define DBG(fmt, args...) fprintf(stderr, fmt "\n", ## args)
-#define WARN(fmt, args...) fprintf(stderr, "usertrace: WARNING: " fmt "\n", ## args)
-#define ERR(fmt, args...) fprintf(stderr, "usertrace: ERROR: " fmt "\n", ## args)
-#define PERROR(call) perror("usertrace: ERROR: " call)
+#include <string.h>
+
+#ifndef UST_COMPONENT
+//#error UST_COMPONENT is undefined
+#define UST_COMPONENT libust
+#endif
+
+/* To stringify the expansion of a define */
+#define XSTR(d) STR(d)
+#define STR(s) #s
+
+#define UST_STR_COMPONENT XSTR(UST_COMPONENT)
+
+#define DEBUG
+#ifdef DEBUG
+# define DBG(fmt, args...) do { fprintf(stderr, UST_STR_COMPONENT ": " fmt " (" __FILE__ ":" XSTR(__LINE__) ")\n", ## args); fflush(stderr); } while(0)
+#else
+# define DBG(fmt, args...) do {} while(0)
+#endif
+#define WARN(fmt, args...) fprintf(stderr, UST_STR_COMPONENT ": Warning: " fmt "\n", ## args); fflush(stderr)
+#define ERR(fmt, args...) fprintf(stderr, UST_STR_COMPONENT ": Error: " fmt "\n", ## args); fflush(stderr)
+#define BUG(fmt, args...) fprintf(stderr, UST_STR_COMPONENT ": BUG: " fmt "\n", ## args); fflush(stderr)
+
+#if (_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !defined(_GNU_SOURCE)
+#define PERROR(call, args...)\
+	do { \
+		char buf[200] = "Error in strerror_r()"; \
+		strerror_r(errno, buf, sizeof(buf)); \
+		fprintf(stderr, UST_STR_COMPONENT ": Error: " call ": %s\n", ## args, buf); fflush(stderr); \
+	} while(0);
+#else
+#define PERROR(call, args...)\
+	do { \
+		char *buf; \
+		char tmp[200]; \
+		buf = strerror_r(errno, tmp, sizeof(tmp)); \
+		fprintf(stderr, UST_STR_COMPONENT ": Error: " call ": %s\n", ## args, buf); fflush(stderr); \
+	} while(0);
+#endif
 
 #define BUG_ON(condition) do { if (unlikely(condition)) ERR("condition not respected (BUG)"); } while(0)
 #define WARN_ON(condition) do { if (unlikely(condition)) WARN("condition not respected on line %s:%d", __FILE__, __LINE__); } while(0)