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 information, 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>