mzhaom / lightweight-java-profiler Goto Github PK

it would be very useful to start again from fresh every N seconds, and output 
to a different file.

That would allow timeseries analysis of long running processes.

What steps will reproduce the problem?
1. In globals.h, change the kNumInterrupts to 30, and the kMaxStackTraces to 
30000 (to make sure there will be enough space to record the whole execution)
2. Run the attached java file 
3. Look for all List1.writeInt stack traces. One of those comes from a 
computeList2 method, which should never happen. 
To spot it more easily, use the following command : 
$> pcregrep -Mn "List1\.writeInt(.*\n){5}.*List2" filename

What is the expected output? What do you see instead?
Expected : The List1.writeInt method is only called by the computeList1 method.
Actual : Some stacktraces show the computeList2 method as calling 
List1.writeInt.

What version of the product are you using? On what operating system?
openjdk7u25, on RedHat 6.4.


Additional informations:
I will be working on a simplier version of the java class that reproduces the 
bug, if possible.

Using Ubuntu 14.04 64-bit. Built from @12 with patch from #3 applied. In both 
JDK 7u55 and 6u45, when I run an application (Jenkins) with the agent loaded, 
`traces.txt` is created but has no content. When I interrupt the process with 
Ctrl-C, the following is printed:

{{{
One of your monitoring interfaces is having trouble resolving its stack traces. 
 GetMethodName on a jmethodID involved in a stacktrace resulted in an 
INVALID_METHODID error which usually indicates its declaring class has been 
unloaded.
}}}

Docs have the following:
  -agentpath:path/to/liblagent.so[:file=fname]

Should be: 
  -agentpath:path/to/liblagent.so[=file=fname]

What steps will reproduce the problem?
1. About JDK
$ java -version
java version "1.7.0_60"
Java(TM) SE Runtime Environment (build 1.7.0_60-b19)
Java HotSpot(TM) Server VM (build 24.60-b09, mixed mode)
$ ldd $(which java) # check if 32 or 64 bit version is in use
        libthread.so.1 =>        /lib/libthread.so.1
        libjli.so =>     /usr/jdk/instances/jdk1.7.0_60/bin/../lib/i386/jli/libjli.so
        libdl.so.1 =>    /lib/libdl.so.1
        libc.so.1 =>     /lib/libc.so.1
        libm.so.2 =>     /lib/libm.so.2

2. Prepare Make file
$ grep ^INCLUDES Makefile # added last 2 entries, JAVA_HOME=/usr/jdk/latest
INCLUDES=-I$(JAVA_HOME)/$(HEADERS) -I$(JAVA_HOME)/$(HEADERS)/$(UNAME) 
-I/usr/jdk/latest/include -I/usr/jdk/latest/include/solaris

3. Compile (tried with gcc from distribution and):
$ CC=/usr/gcc/4.7/bin/gcc gmake all
/usr/gcc/4.7/bin/gcc -I/usr/jdk/latest/ -I/usr/jdk/latest//sunos 
-I/usr/jdk/latest/include -I/usr/jdk/latest/include/solaris  
-fdiagnostics-show-option -fno-exceptions -fno-omit-frame-pointer 
-fno-strict-aliasing -funsigned-char -fno-asynchronous-unwind-tables -m32 
-msse2 -g -D__STDC_FORMAT_MACROS  -Wall -Werror -Wformat-security 
-Wno-char-subscripts -Wno-sign-compare -Wno-strict-overflow -Wwrite-strings 
-Wnon-virtual-dtor -Woverloaded-virtual -O2 -Fvisibility=hidden -fPIC -c 
/export/NoBackup/Downloads/lightweight-java-profiler-read-only/src/entry.cc -o 
build-32/entry.pic.o
/export/NoBackup/Downloads/lightweight-java-profiler-read-only/src/entry.cc: In 
function ‘void SetFileFromOption(char*)’:
/export/NoBackup/Downloads/lightweight-java-profiler-read-only/src/entry.cc:185:
13: error: ‘exit’ was not declared in this scope
/export/NoBackup/Downloads/lightweight-java-profiler-read-only/src/entry.cc: In 
function ‘void ParseArguments(char*)’:
/export/NoBackup/Downloads/lightweight-java-profiler-read-only/src/entry.cc:210:
13: error: ‘exit’ was not declared in this scope
gmake: *** [build-32/entry.pic.o] Error 1


3. Failed

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?
Version from SVN:
$ [2014-06-17 10:37:29] svn checkout 
http://lightweight-java-profiler.googlecode.com/svn/trunk/ 
lightweight-java-profiler-read-only

OS is OpenIndiana (/hipster release):
$ head -1 /etc/release
             OpenIndiana Development oi_151.1.8 X86 (powered by illumos)
$ uname -rosv
SunOS 5.11 illumos-3339235 Solaris

Please provide any additional information below.

There is enough support currently in head to compile without complaint for OS X 
and do nothing.

The problem is relatively clear.  setitimer(SIGPROF) on OS X seems to be 
delivered to the first thread that doesn't mask it.  This is always the main 
thread, which isn't a Java thread.

A solution is to have a separate thread that wakes up at intervals, suspends a 
random application thread, and profiles it.  This seems to be possible using 
thread_suspend and thread_get_state (in the /usr/include/mach directories).  
I've run out of time to do this today, though, so I'm filing a bug to remind 
myself to do it at some later date.

I use Mac OS X Yosemite and had problems with compiling the project.

I attach the changes I needed to get it build.

What steps will reproduce the problem?
1. svn chekcout code 
2. vi MAKE file change BITS?=32 to BITS?=64
3. make all

What is the expected output? What do you see instead?

cc1plus: error: unrecognized command line option "-Wframe-larger-than=16384"
cc1plus: error: unrecognized command line option "-Wno-unused-but-set-variable"
cc1plus: error: unrecognized command line option "-Wunused-but-set-parameter"
cc1plus: error: unrecognized command line option "-Wvla"
cc1plus: error: unrecognized command line option "-Wno-conversion-null"
cc1plus: error: unrecognized command line option "-Wno-builtin-macro-redefined"
cc1plus: error: unrecognized command line option "-Wno-strict-overflow"
cc1plus: error: unrecognized command line option "-std=gnu++0x"


gcc version 

Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man 
--infodir=/usr/share/info --enable-shared --enable-threads=posix 
--enable-checking=release --with-system-zlib --enable-__cxa_atexit 
--disable-libunwind-exceptions --enable-libgcj-multifile 
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk 
--disable-dssi --disable-plugin 
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic 
--host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.2 20080704 (Red Hat 4.1.2-51)

display.cc:23:22: warning: invalid suffix on literal; C++11 requires a space 
between literal and identifier [-Wliteral-suffix]
       fprintf(file_, "%"PRIdPTR" ", traces[i].count);

lightweight-java-profiler fails to build on Ubuntu 13.10 (Saucy):

/home/adam/src/lightweight-java-profiler/src/display.cc:23:22: error: invalid 
suffix on literal; C++11 requires a space between literal and identifier 
[-Werror=literal-suffix]
       fprintf(file_, "%"PRIdPTR" ", traces[i].count);

The fix is trivial; patch attached.