0843fb2c079566c9ec74d3e69bfa064b344e661c
3 # usttrace by Pierre-Marc Fournier 2009
4 # Distributed under the GPLv2.
6 USTTRACE_DIR
="$(dirname $0)"
7 if [ -x "${USTTRACE_DIR}/ustd/ustd" ] ; then
8 # Use the not installed libraries instead
9 USTD
="${USTTRACE_DIR}/ustd/ustd"
10 LIBINTERFORK_PATH
="${USTTRACE_DIR}/libinterfork/.libs/libinterfork.so"
11 LIBMALLOCWRAP_PATH
="${USTTRACE_DIR}/libmallocwrap/.libs/libmallocwrap.so"
12 LIBUST_PATH
="${USTTRACE_DIR}/libust/.libs/libust.so"
14 # Use the libraries that the dynamic link finds
16 LIBINTERFORK_PATH
="libinterfork.so"
17 LIBMALLOCWRAP_PATH
="libmallocwrap.so"
18 LIBUST_PATH
="libust.so"
21 BASE_TRACE_DIR
="${HOME}/.usttraces"
24 echo "usage: $0 OPTIONS COMMAND" 2>/dev
/stderr
26 echo "Options:" 2>/dev
/stderr
27 echo " -l Runtime link with UST library." 2>/dev
/stderr
28 echo " (Needed only if program was not linked at compile time with libust.)" 2>/dev
/stderr
29 echo " -L Add path to ust libraries to LD_LIBRARY_PATH." 2>/dev
/stderr
30 echo " -m Instrument malloc calls." 2>/dev
/stderr
31 echo " -f Also trace forked processes." 2>/dev
/stderr
32 echo " -s Use system-wide daemon instead of creating one for this session." 2>/dev
/stderr
36 echo "$0: error: $1" 2>/dev
/stderr
39 while getopts ":hlLmfs" options
; do
41 l
) arg_preload_libust
=1;;
43 m
) arg_preload_malloc
=1;;
44 f
) arg_preload_fork
=1;;
45 s
) arg_syswide_daemon
=1;;
54 shift $
(($OPTIND - 1))
56 if [ ! -x "$USTD" -a ! -x "$(which ustd 2>/dev/null)" ];
58 error
"specified path to ustd not executable ($USTD)"
68 error
"no home specified"
73 error
"no command specified"
78 # Create directory for trace output
79 DATESTRING
="$(hostname)-$(date +%Y%m%d%H%M%S)"
80 OUTDIR
="$BASE_TRACE_DIR/$DATESTRING"
84 SOCKPATH
="/tmp/ust-sock-$$"
86 if [ "$arg_syswide_daemon" != "1" ];
88 pidfilepath
="/tmp/usttrace-$USER-$(date +%Y%m%d%H%M%S%N)-ustd-pid"
89 mkfifo -m 0600 "$pidfilepath"
91 $USTD --pidfile "$pidfilepath" -s "$SOCKPATH" -o "$OUTDIR" >"$OUTDIR/ustd.log" 2>&1 &
92 USTDPID
="$(<$pidfilepath)"
93 export UST_DAEMON_SOCKET
="$SOCKPATH"
96 # Establish the environment for the command
99 export UST_AUTOPROBE
=1
101 if [ "$arg_preload_libust" = "1" ];
103 if [ -n "${LIBUST_PATH%libust.so}" ] ; then
104 export LD_LIBRARY_PATH
="$LD_LIBRARY_PATH:${LIBUST_PATH%libust.so}"
106 export LD_PRELOAD
="$LD_PRELOAD:$LIBUST_PATH"
109 if [ "$arg_ld_std_ust" = "1" ];
111 if [ -n "$${LIBUST_PATH%libust.so}" ] ; then
112 export LD_LIBRARY_PATH
="$LD_LIBRARY_PATH:${LIBUST_PATH%libust.so}"
116 if [ "$arg_preload_malloc" = "1" ];
118 export LD_PRELOAD
="$LD_PRELOAD:$LIBMALLOCWRAP_PATH"
121 if [ "$arg_preload_fork" = "1" ];
123 export LD_PRELOAD
="$LD_PRELOAD:$LIBINTERFORK_PATH"
126 # Install a handler for SIGIO. This is the signal that will be sent by ustd to
127 # the traced program to trigger the creation of its listener thread. However,
128 # it is possible that the SIGIO will be sent after the shell fork, but before
129 # the exec of the command. If this handler isn't there, bash might terminate
130 # because of a unhandled signal.
132 # Execute the command
134 ) |
tee "$OUTDIR/app.log"
136 ## Because of the keepalive mechanism, we're sure that by the time
137 ## we get here, the daemon is connected to all the buffers that still exist.
138 ## Therefore we can politely ask it to die when it's done.
140 if [ "$arg_syswide_daemon" != "1" ];
142 # Tell the daemon to die
143 kill -SIGTERM "$USTDPID"
145 echo "Waiting for ustd to shutdown..."
151 echo "Trace was output in: " $OUTDIR
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