added libunwind support

Author: samsk

ChangeLog

@@ -1,4 +1,8 @@
 
+0.4.0b Sun Aug  2 22:20:42 CEST 2015
+	- use libunwind for backtrace if available
+	- scripts modified to support decoding of libuwind based backtrace
+
 0.3.0 Sun Nov 23 21:12:54 CET 2014
 	- add manpages
 	- release

Makefile.in

@@ -200,6 +200,7 @@ LN_S = @LN_S@
 LOG_MALLOC2_API_VERSION = @LOG_MALLOC2_API_VERSION@
 LOG_MALLOC2_SO_VERSION = @LOG_MALLOC2_SO_VERSION@
 LTLIBOBJS = @LTLIBOBJS@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
 MAKEINFO = @MAKEINFO@
 MANIFEST_TOOL = @MANIFEST_TOOL@
 MKDIR_P = @MKDIR_P@

README

@@ -2,12 +2,12 @@
 ################################################################################
 
 Program : log-malloc2 (library)
-Version	: 0.3.0
+Version	: 0.4.0
 Purpose	: Malloc logging library with backtrace and byte-exact memory
 		tracking.
 License	: GNU GPL v3 (see file COPYING)
 	  GNU LGPL v3 (see file COPYING-LGPL)
-Author	: Samuel Behan <_samuel_._behan_(at)_dob_._sk> (c) 2011-2014
+Author	: Samuel Behan <_samuel_._behan_(at)_dob_._sk> (c) 2011-2015
 Web	: http://devel.dob.sk/log-malloc2
 	  http://blog.dob.sk/category/devel/log-malloc2 (howto, tutorial)
 
@@ -36,7 +36,7 @@ Web	: http://devel.dob.sk/log-malloc2
 ------------
 
      * logging to file descriptor 1022 (if opened)
-     * call stack backtrace (using GNU backtrace() if available)
+     * call stack backtrace (via GNU backtrace() or libunwind)
      * requested memory tracking (byte-exact)
      * allocated memory tracking (byte-exact - using malloc_usable_size())
      * process memory status tracking (from /proc/self/statm)
@@ -82,8 +82,8 @@ Web	: http://devel.dob.sk/log-malloc2
 	* log-malloc-trackusage
 		Script to track program memory usage over time.
 
-     This scripts can be also used as perl packages, because they export functions
-     to parse and analyse trace file or convert backtraces.
+     These scripts can be also used as perl packages, because they export functions
+     to parse and analyse trace file or convert backtraces (modulino concept).
 
 
 ---------
@@ -150,7 +150,7 @@ Web	: http://devel.dob.sk/log-malloc2
 	Pre-initializes backtrace() function, to avoid later memory alocations.
 	Use of this function is optional.
 
-    ssize_t log_malloc_backtrace(int fd)
+     ssize_t log_malloc_backtrace(int fd)
 
 	Generate current backtrace including process memory map (/proc/self/maps) to
 	make backtrace symbol conversion easier. Generated output can be directly
@@ -162,8 +162,9 @@ Web	: http://devel.dob.sk/log-malloc2
 --------------------
 
     * Log to tmpfs, or other FS that handles write operation effectively
+
         If traced application intensively allocates memory, consider logging to tmpf
-	because writting to trace fd is the slowest operation, that is in addition
+	because writting to trace fd is the slowest operation, that migbt be in addition
 	protected by a mutex, thus serializing multithreaded memory allocations.
 
 

README.md

@@ -6,10 +6,11 @@ produces simple text trace output, that makes it easy to find leaks and also ide
 
 [![Build Status](https://travis-ci.org/samsk/log-malloc2.svg)](https://travis-ci.org/samsk/log-malloc2)
 
+
 #Features
 
 - logging to file descriptor 1022 (if opened)
-- call stack **backtrace** (using GNU backtrace() if available)
+- call stack **backtrace** (via GNU backtrace() or libunwind)
 - **requested memory tracking** (byte-exact)
 - allocated memory tracking (byte-exact - using malloc_usable_size())
 - process memory status tracking (from /proc/self/statm)
@@ -26,6 +27,7 @@ OR
 
 `LD_PRELOAD=./liblog-malloc2.so command args ... 1022>/tmp/program.log`
 
+
 #Helper scripts
 
 - `backtrace2line`
@@ -39,7 +41,6 @@ OR
  - Script to track program memory usage over time.
 
 
-
 # C API
 
 - ```size_t log_malloc_get_usage(void)```
@@ -92,16 +93,19 @@ OR
  - **homepage**: [http://dob.sk](http://dob.sk?u=github)
  - **projects**: [http://devel.dob.sk](http://devel.dob.sk?u=github)
 
+
 # Licensing
 
 * [LGPLv3](https://www.gnu.org/licenses/lgpl.html) for C code (library)
 * [GPLv3](https://www.gnu.org/licenses/gpl.html) for Perl code (scripts)
 
+
 # See Also
 
 * More/Detailed info in project [README](README)
 * Project home: [http://devel.dob.sk/log-malloc2](http://devel.dob.sk/log-malloc2?u=github)
 
+
 #Examples
 
 ###Example Trace Output
@@ -176,7 +180,6 @@ OR
     7fffb54cf000-7fffb54d1000 r-xp 00000000 00:00 0                          [vdso]
     ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
 
-
 ###Example leak
 
     $ ./scripts/log-malloc-findleak.pl /tmp/lm2.trace