Created
April 25, 2022 13:00
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| #!/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' |
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