Initial revision

1 files changed, 122 insertions, 0 deletions

diff --git a/rsync/trace.h b/rsync/trace.h
new file mode 100644
index 0000000..60a6477
--- a/dev/null
+++ b/rsync/trace.h
@@ -0,0 +1,122 @@
+/*= -*- c-basic-offset: 4; indent-tabs-mode: nil; -*-
+ *
+ * librsync -- generate and apply network deltas
+ * $Id$
+ * 
+ * Copyright (C) 2000, 2001 by Martin Pool <mbp@samba.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+/*
+ * TODO: A function like perror that includes strerror output.  Apache
+ * does this by adding flags as well as the severity level which say
+ * whether such information should be included.
+ */
+
+
+/*
+ * trace may be turned off.
+ *
+ * error is always on, but you can return and continue in some way
+ *
+ * fatal terminates the whole process
+ */
+
+void rs_fatal0(char const *s, ...);
+void rs_error0(char const *s, ...);
+void rs_trace0(char const *s, ...);
+
+void rs_log0_nofn(int level, char const *fmt, ...);
+
+#ifdef __GNUC__
+
+void rs_log0(int level, char const *fn, char const *fmt, ...)
+    __attribute__ ((format(printf, 3, 4)));
+
+#ifdef DO_RS_TRACE
+#  define rs_trace(fmt, arg...)                            \
+    do { rs_log0(RS_LOG_DEBUG, __FUNCTION__, fmt , ##arg);  \
+    } while (0)
+#else
+#  define rs_trace(s, str...)
+        #endif/* !DO_RS_TRACE */
+
+/*
+ * TODO: Don't assume this is a gcc thing; rather test in autoconf for
+ * support for __FUNCTION__ and varargs macros.  One simple way might
+ * just be to try compiling the definition of one of these functions!
+ *
+ * TODO: Also look for the C9X predefined identifier `_function', or
+ * whatever it's called.
+ */
+
+#define rs_log(l, s, str...) do {              \
+     rs_log0((l), __FUNCTION__, (s) , ##str);  \
+     } while (0)
+
+
+#define rs_error(s, str...) do {                       \
+     rs_log0(RS_LOG_ERR,  __FUNCTION__, (s) , ##str);  \
+     } while (0)
+
+
+#define rs_fatal(s, str...) do {               \
+     rs_log0(RS_LOG_CRIT,  __FUNCTION__,       \
+              (s) , ##str);                    \
+     abort();                                  \
+     } while (0)
+
+
+#else /************************* ! __GNUC__ */
+
+#  define rs_fatal rs_fatal0
+#  define rs_error rs_error0
+#  define rs_log   rs_log0_nofn
+
+#  ifdef DO_RS_TRACE
+#    define rs_trace rs_trace0
+        #  endif                /* DO_RS_TRACE */
+        #endif                  /* ! __GNUC__ */
+
+
+void rs_log0(int level, char const *fn, char const *fmt, ...);
+
+
+enum {
+    RS_LOG_PRIMASK       = 7,   /**< Mask to extract priority
+                                   part. \internal */
+
+    RS_LOG_NONAME        = 8    /**< \b Don't show function name in
+                                   message. */
+};
+
+
+
+/**
+ * \macro rs_trace_enabled()
+ *
+ * Call this before putting too much effort into generating trace
+ * messages.
+ */
+
+extern int rs_trace_level;
+
+#ifdef DO_RS_TRACE
+#  define rs_trace_enabled() ((rs_trace_level & RS_LOG_PRIMASK) >= RS_LOG_DEBUG)
+#else
+#  define rs_trace_enabled() 0
+#endif