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Sometime you know a test is going to crash and produce a LOT of backtrace, and you already know what it will look like. For those times you can set PLEASE_NO_GDB_BACKTRACE=1 and there will be no backtrace, which can save quite a bit of time and thousands of lines of log file. (In particular, backtraces of Python programs can take over a minute to complete). Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: David Mulder <dmulder@suse.com>
148 lines
2.8 KiB
Bash
Executable File
148 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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BASENAME=`basename $0`
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unset LD_PRELOAD
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if [ -n "$VALGRIND" -o -n "$SMBD_VALGRIND" ]; then
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echo "${BASENAME}: Not running debugger under valgrind"
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exit 1
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fi
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if [ "x$PLEASE_NO_GDB_BACKTRACE" != "x" ]; then
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echo "${BASENAME}: Not running debugger because PLEASE_NO_GDB_BACKTRACE is set"
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exit 0
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fi
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# we want everything on stderr, so the program is not disturbed
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exec 1>&2
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BASENAME=`basename $0`
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UNAME=`uname`
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PID=$1
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BINARY=$2
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test x"${PID}" = x"" && {
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echo "Usage: ${BASENAME} <pid> [<binary>]"
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exit 1
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}
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DB_LIST="gdb"
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case "${UNAME}" in
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#
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# on Tru64 we need to try ladebug first
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# because gdb crashes itself...
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#
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OSF1)
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DB_LIST="ladebug ${DB_LIST}"
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;;
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#
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# On solaris dbx is working way more better than gdb
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# let's try it first
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#
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SunOS)
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DB_LIST="dbx ${DB_LIST}"
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;;
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#
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# FreeBSD comes with a flavor that works gdb66 and one that don't gdb
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# (gdb 6.1) let's try it first the one that works !
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#
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FreeBSD)
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DB_LIST="gdb66 ${DB_LIST}"
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;;
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esac
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for DB in ${DB_LIST}; do
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DB_BIN=`which ${DB} 2>/dev/null | grep '^/'`
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test x"${DB_BIN}" != x"" && {
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break
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}
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done
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test x"${DB_BIN}" = x"" && {
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echo "${BASENAME}: ERROR: No debugger found."
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exit 1
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}
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need_binary="no"
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case "${DB}" in
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# These debuggers need the process binary specified:
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ladebug)
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need_binary="yes"
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;;
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gdb66)
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need_binary="yes"
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;;
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dbx)
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need_binary="yes"
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;;
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esac
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test x"${need_binary}" = x"yes" && {
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# we first try to use /proc/${PID}/exe or /proc/{$PID}/path for solaris
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# then fallback to the binary from the commandline
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# then we search for the commandline argument with
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# 'which'
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#
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test -f "/proc/${PID}/exe" && BINARY="/proc/${PID}/exe"
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test -f "/proc/${PID}/path/a.out" && BINARY=`ls -l /proc/${PID}/path/a.out |sed 's/.*-> //'`
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test x"${BINARY}" = x"" && BINARY="/proc/${PID}/exe"
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test -f "${BINARY}" || BINARY=`which ${BINARY}`
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test -f "${BINARY}" || {
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echo "${BASENAME}: ERROR: Cannot find binary '${BINARY}'."
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exit 1
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}
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}
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BATCHFILE_PRE=`mktemp --tmpdir gdb_backtrace_pre.XXXXXXXXXX`
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test -n "${BATCHFILE_PRE}" || {
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echo "mktemp doesn't work" 1>&2
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exit 1
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}
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BATCHFILE_MAIN=`mktemp --tmpdir gdb_backtrace_main.XXXXXXXXXX`
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test -n "${BATCHFILE_MAIN}" || {
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echo "mktemp doesn't work" 1>&2
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exit 1
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}
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case "${DB}" in
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ladebug)
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cat << EOF > ${BATCHFILE_PRE}
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set \$stoponattach
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EOF
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cat << EOF > ${BATCHFILE_MAIN}
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where
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quit
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EOF
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${DB_BIN} -c "${BATCHFILE_MAIN}" -i "${BATCHFILE_PRE}" -pid "${PID}" "${BINARY}"
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;;
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gdb66)
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cat << EOF > ${BATCHFILE_MAIN}
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set height 1000
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bt full
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info locals
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kill
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quit
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EOF
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${DB_BIN} -x "${BATCHFILE_MAIN}" "${BINARY}" "${PID}"
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;;
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gdb)
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cat << EOF > ${BATCHFILE_MAIN}
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set height 0
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bt full
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thread apply all bt full
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info locals
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quit
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EOF
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${DB_BIN} -batch -x "${BATCHFILE_MAIN}" --pid "${PID}" < /dev/null
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;;
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dbx)
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${DB_BIN} "where;dump;kill;quit" "${BINARY}" "${PID}"
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;;
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esac
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/bin/rm -f ${BATCHFILE_PRE} ${BATCHFILE_MAIN}
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