1 files changed, 96 insertions, 0 deletions
diff --git a/common/collection/trace.h b/common/collection/trace.h
new file mode 100644
index 000000000..9211e20d6
--- /dev/null
+++ b/common/collection/trace.h
@@ -0,0 +1,96 @@
+/*
+    COMMON TRACE
+
+    Common header file for tracing.
+
+    Copyright (C) Dmitri Pal <dpal@redhat.com> 2009
+
+    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; either version 3 of the License, or
+    (at your option) any later version.
+    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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef COMMON_TRACE_H
+#define COMMON_TRACE_H
+
+#ifdef TRACE_LEVEL
+#define HAVE_TRACE
+#include <stdio.h>
+
+/* The trace level is a bit mask */
+#define TRACE_FLOW      0x0000001  /* - trace messages that are entry exit into functions */
+#define TRACE_ERROR     0x0000002  /* - trace messages that are errors */
+#define TRACE_INFO      0x0000004  /* - trace things that are informational */
+
+
+#ifdef TRACE_HOME           /* Define this in the module that contains main */
+unsigned trace_level = TRACE_LEVEL;
+#else
+extern unsigned trace_level;
+#endif /* TRACE_HOME */
+#endif /* TRACE_LEVEL */
+
+
+
+#ifdef HAVE_TRACE
+/* Tracing strings */
+#define TRACE_STRING(level, msg, str) \
+    do { \
+        if (level & trace_level) { \
+            printf("[DEBUG] %23s (%4d) %s %s\n", \
+                   __FILE__, __LINE__, msg, str); \
+        } \
+    } while(0)
+
+/* Tracing numbers */
+#define TRACE_NUMBER(level, msg, num) \
+    do { \
+        if (level & trace_level) { \
+            printf("[DEBUG] %23s (%4d) %s %lu\n", \
+                   __FILE__, __LINE__, msg, (unsigned long int)(num)); \
+        } \
+    } while(0)
+
+/* Tracing doubles */
+#define TRACE_DOUBLE(level, msg, num) \
+    do { \
+        if (level & trace_level) { \
+            printf("[DEBUG] %23s (%4d) %s %e\n", \
+                   __FILE__, __LINE__, msg, (double)(num)); \
+        } \
+    } while(0)
+
+/* Assertion */
+#define TRACE_ASSERT(expression) expression ? : printf("ASSERTION FAILED\n")
+#else /* HAVE_TRACE */
+
+/* Noop in case the tracing is disabled */
+#define TRACE_STRING(level, msg, str)
+#define TRACE_NUMBER(level, msg, num)
+#define TRACE_DOUBLE(level, msg, num)
+#endif /* HAVE_TRACE */
+
+
+/* Convenience wrappers for strings */
+#define TRACE_FLOW_STRING(msg, str)  TRACE_STRING(TRACE_FLOW, msg, str)
+#define TRACE_ERROR_STRING(msg, str) TRACE_STRING(TRACE_ERROR, msg, str)
+#define TRACE_INFO_STRING(msg, str)  TRACE_STRING(TRACE_INFO, msg, str)
+
+/* Convenience wrappers for numbers */
+#define TRACE_FLOW_NUMBER(msg, num)  TRACE_NUMBER(TRACE_FLOW, msg, num)
+#define TRACE_ERROR_NUMBER(msg, num) TRACE_NUMBER(TRACE_ERROR, msg, num)
+#define TRACE_INFO_NUMBER(msg, num)  TRACE_NUMBER(TRACE_INFO, msg, num)
+
+/* Convenience wrappers for numbers */
+#define TRACE_FLOW_DOUBLE(msg, num)  TRACE_DOUBLE(TRACE_FLOW, msg, num)
+#define TRACE_ERROR_DOUBLE(msg, num) TRACE_DOUBLE(TRACE_ERROR, msg, num)
+#define TRACE_INFO_DOUBLE(msg, num)  TRACE_DOUBLE(TRACE_INFO, msg, num)
+
+#endif /* COMMON_TRACE_H */