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Full Discussion: Tracing Function Calls in a program
Top Forums Programming Tracing Function Calls in a program Post 302277644 by uunniixx on Saturday 17th of January 2009 05:55:40 AM
Old 01-17-2009
Tracing Function Calls in a program
Apart from writing debug and statements in constructors is there any way by which we can trace the function call stack at any depth?

The issue that we always face is that when program crashes (Web Server running on Linux) we have no idea where it crashes and we have to do the hard way of debugging.

Is there any library / extra code that we can include and that can output the function flow in a program given a scenario.

Sorry I tired a lot of programs but without extra debugging (followed by compilation) we are not sure where the code flows. If it gives us the line number that would be more perfect.

Thanks in advance
 

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LEARN ABOUT DEBIAN

pstack

PSTACK(1)						     Linux Programmer's Manual							 PSTACK(1)

NAME

       pstack - print a stack trace of running processes

SYNOPSIS

       pstack pid [...]

DESCRIPTION

       pstack attaches to the active processes named by the pids on the command line, and prints out an execution stack trace, including a hint at
       what the function arguments are.  If symbols exist in the binary (usually the case unless you have run strip(1)), then  symbolic  addresses
       are printed as well.

       If the process is part of a thread group, then pstack will print out a stack trace for each of the threads in the group.

RESTRICTIONS

       pstack currently works only on Linux, only on an x86 machine running 32 bit ELF binaries (64 bit not supported).  Also, for symbolic infor-
       mation, you need to use a GNU compiler to generate your program, and you can't strip symbols from the binaries.	For thread information	to
       be  dumped,  you  have  to  use	the  debug-aware version of the LinuxThreads libpthread.so library.  (To check, run nm(1) on your pthreads
       library, and make sure that the symbol "__pthread_threads_debug" is defined.)  Threads are not supported with the newer NPTL  libpthread.so
       library.

SEE ALSO

       nm(1), ptrace(2)

AUTHORS

       Ross Thompson <ross@whatsis.com>

       Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>

Red Hat Linux							    Feb 25 2002 							 PSTACK(1)
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