gstack查看线程信息

1.查看线程信息

[upchina@iZbp14z6qodocy209yj5c8Z PriceAlarmServerGnn]$ ps  -ef  |  grep "PriceAlarm"
upchina  21261 19389  5 Apr15 ?        03:56:48 /usr/local/app/taf/tafnode/data/HQExtend.PriceAlarmServerGnn/bin/PriceAlarmServerGnn --config=/usr/local/app/taf/tafnode/data/HQExtend.PriceAlarmServerGnn/conf/HQExtend.PriceAlarmServerGnn.config.conf
upchina  31896 28186  0 11:47 pts/2    00:00:00 grep --color=auto PriceAlarm

2.编写脚本 gstack.sh ，脚本内容如下：

#!/bin/sh

if test $# -ne 1; then
    echo "Usage: `basename $0 .sh` <process-id>" 1>&2
    exit 1
fi

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

# GDB doesn't allow "thread apply all bt" when the process isn't
# threaded; need to peek at the process to determine if that or the
# simpler "bt" should be used.

backtrace="bt"
if test -d /proc/$1/task ; then
    # Newer kernel; has a task/ directory.
    if test `/bin/ls /proc/$1/task | /usr/bin/wc -l` -gt 1 2>/dev/null ; then
        backtrace="thread apply all bt"
    fi
elif test -f /proc/$1/maps ; then
    # Older kernel; go by it loading libpthread.
    if /bin/grep -e libpthread /proc/$1/maps > /dev/null 2>&1 ; then
        backtrace="thread apply all bt"
    fi
fi

GDB=${GDB:-/usr/bin/gdb}

# Run GDB, strip out unwanted noise.
# --readnever is no longer used since .gdb_index is now in use.
$GDB --quiet -nx $GDBARGS /proc/$1/exe $1 <<EOF 2>&1 | 
set width 0
set height 0
set pagination no
$backtrace
EOF
/bin/sed -n \
    -e 's/^\((gdb) \)*//' \
    -e '/^#/p' \
    -e '/^Thread/p'