pstack.sh 查看进程堆栈

#!/bin/bash
if (( $# < 1 ))
then
    echo "usage: `basename $0` pid" 1>&2
    exit 1
fi

if [[ ! -r /proc/$1 ]]
then
    echo "Process $1 not found." 1>&2
    exit 1
fi

backtrace="bt"
if [[ -d /proc/$1/task ]]
then
    if [[ `ls /proc/$1/task 2>/dev/null | wc -l` > 1 ]]
    then
        backtrace="thread apply all bt"
    fi  ;
elif [[ -f /proc/$1/maps ]]
then
    if grep -e libpthread /proc/$1/maps > /dev/null 2>&1
    then
        backtrace="thread apply all bt"
    fi
fi

GDB=gdb

$GDB -quiet -nx /proc/$1/exe -p $1 <<<"$backtrace" |
    sed -n  \
    -e 's/^(gdb) //' \
    -e '/^#/p' \
    -e '/^Thread/p'

使用方法:

pstack.sh pid