Complete change of the source directory tree

[lttng-tools.git] / src / common / lttngerr.h

diff --git a/src/common/lttngerr.h b/src/common/lttngerr.h
new file mode 100644 (file)
index 0000000..b14f232
--- /dev/null
+++ b/src/common/lttngerr.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C)  2011 - David Goulet <david.goulet@polymtl.ca>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; only version 2
+ * of the License.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef _LTTNGERR_H
+#define _LTTNGERR_H
+
+#include <errno.h>
+#include <stdio.h>
+
+/* Stringify the expansion of a define */
+#define XSTR(d) STR(d)
+#define STR(s) #s
+
+extern int opt_quiet;
+extern int opt_verbose;
+
+#define PRINT_ERR   0x1
+#define PRINT_WARN  0x2
+#define PRINT_BUG   0x3
+#define PRINT_MSG   0x4
+#define PRINT_DBG   0x10
+#define PRINT_DBG2  0x20
+#define PRINT_DBG3  0x30
+
+/*
+ * Macro for printing message depending on command line option and verbosity.
+ */
+#define __lttng_print(type, fmt, args...)                                 \
+       do {                                                                  \
+               if (opt_quiet == 0) {                                             \
+                       if (type == PRINT_MSG) {                                      \
+                               fprintf(stdout, fmt, ## args);                            \
+                       } else if (((type & PRINT_DBG) && opt_verbose == 1) ||        \
+                                       ((type & (PRINT_DBG | PRINT_DBG2)) &&                 \
+                                               opt_verbose == 2) ||                              \
+                                       ((type & (PRINT_DBG | PRINT_DBG2 | PRINT_DBG3)) &&    \
+                                               opt_verbose == 3)) {                              \
+                               fprintf(stderr, fmt, ## args);                            \
+                       } else if (type & (PRINT_ERR | PRINT_WARN | PRINT_BUG)) {     \
+                               fprintf(stderr, fmt, ## args);                            \
+                       }                                                             \
+               }                                                                 \
+       } while (0);
+
+#define MSG(fmt, args...) \
+       __lttng_print(PRINT_MSG, fmt "\n", ## args)
+#define ERR(fmt, args...) \
+       __lttng_print(PRINT_ERR, "Error: " fmt "\n", ## args)
+#define WARN(fmt, args...) \
+       __lttng_print(PRINT_WARN, "Warning: " fmt "\n", ## args)
+#define BUG(fmt, args...) \
+       __lttng_print(PRINT_BUG, "BUG: " fmt "\n", ## args)
+
+/* Three level of debug. Use -v, -vv or -vvv for the levels */
+#define DBG(fmt, args...) __lttng_print(PRINT_DBG, "DEBUG1: " fmt \
+               " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
+#define DBG2(fmt, args...) __lttng_print(PRINT_DBG2, "DEBUG2: " fmt \
+               " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
+#define DBG3(fmt, args...) __lttng_print(PRINT_DBG3, "DEBUG3: " fmt \
+               " [in %s() at " __FILE__ ":" XSTR(__LINE__) "]\n", ## args, __func__)
+
+#define _PERROR(fmt, args...) \
+       __lttng_print(PRINT_ERR, "perror " fmt "\n", ## args)
+
+#define PERROR(call, args...) \
+    do { \
+               char *buf; \
+               char tmp[200]; \
+               buf = strerror_r(errno, tmp, sizeof(tmp)); \
+               _PERROR(call ": %s", ## args, buf); \
+       } while(0);
+
+#endif /* _LTTNGERR_H */