How is gdb used to debug Java programs? - Stack Overflow
2011年2月23日 · GDB is 99% of the time is not useful for debugging Java, but it can help you find native memory leaks which the java debuggers can't. gdb can be useful to take heap dumps fast. Normally one would dump the heap by using jmap or similar tools. But when using this tools, the JVM performs garbage collection before dumping, which can take hours on a ...
How to Debug Java -JNI using GDB on linux ? - Stack Overflow
2012年2月13日 · 3. I found the following way really interesting. By linking the file below to the jni library you want to debug, when the library get loaded by the dynamic linker it automatically starts a gdbserver for the current jvm, thanks to the gcc constructor attribute. Simply using remote gdb from command line or from eclipse make it easy to debug then.
Is it possible to debug core dumps when using Java JNI?
2009年11月19日 · To get the core file read into gdb you have to add the java virtual machine to it. That is. gdb /usr/local/jdk1.8.0_66/bin/java core. it will very likely tell you that a ton of symbols are not found (which is normal, these are the JVM symbols). However, the JNI call that crashed might appear in your stacktrace if you type 'bt'.
java - How to Debug openjdk using gdb? - Stack Overflow
I will answer this for other people, after you get the sources Follow the steps: bash ./configure --with-debug-level=slowdebug --with-target-bits=64 --disable-zip-debug-info. make all. An information worth mentioning that finally when you start the debugging session with gdb and you run the program you may see a SEGFAULT ignore it and continue ...
Programmatically interacting with gdb using java - Stack Overflow
2011年8月22日 · Using Runtime.getRuntime.exec, I'm able to attach GDB to any processes. The problem is that I am unable to send inputs to GDB after it has been started. **EDIT (19/8/2011): At the line "out.println(gdbcommand)", gdb is started. How do I get the stdout of the newly spawned gdb, write inputs to it and then read the stdin.
gdb - Core dump file analysis - Stack Overflow
2011年2月25日 · gdb program core debug coredump core produced by program. gdb --help describe command line options. First of all, find the directory where the corefile is generated. Then use ls -ltr command in the directory to find the latest generated corefile. To load the corefile use. gdb binary path of corefile.
emacs - invoke gdb to debug java programs - Stack Overflow
2014年12月23日 · gdb cannot debug Java directly. gdb cannot be used to debug Java programs in general, it can only be used to debug Java programs that were compiled into binaries using gcj. See also Java Debugging with gdb from its manual. You may want to go for jdb instead, which is the Java Debugger that comes with a JDK. Emacs for Java? Use an IDE instead
How to do gdb with java -cp myjar.jar class.myclass
2012年3月20日 · How to tell gdb run this way: gdb java -cp /var/tmp/Test.jar myjava.class. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying". and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu".
How do I print a Java array in gdb? - Stack Overflow
2011年1月31日 · 1. p *array-variable@length should work. Works fine for me, this is straight out of the doco "p *array-variable@length Print first # values of array specified by length. Good for pointers to dynamicaly allocated memory." You may need to set print array on before this works.
java - How do I debug Segfaults occurring in the JVM when it runs …
My Java application has started to crash regularly with a SIGSEGV and a dump of stack data and a load of information in a text file. I have debugged C programs in gdb and I have debugged Java code from my IDE. I'm not sure how to approach C-like crashes in a running Java program. I'm assuming I'm not looking at a JVM bug here.