X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=usttrace;h=b28a8d018609e4a80bec867afac0e34c6d81a7f7;hb=6c42ce2c7f9c9f2c91170e87029c9c2702a76c6e;hp=4f6f1f26bf9241d67f8c0f8647e9be05ad03887c;hpb=87d40fcfac1d133efc27f9bd32a7509f586f358a;p=ust.git

diff --git a/usttrace b/usttrace
index 4f6f1f2..b28a8d0 100755
--- a/usttrace
+++ b/usttrace
@@ -56,13 +56,14 @@ function usage () {
 	echo "    -s    Use system-wide daemon instead of creating one for this session." 2>/dev/stderr
 }
 
-while getopts ":hlLmfs" options; do
+while getopts ":hlLmfsW" options; do
 	case $options in
 		l) arg_preload_libust=1;;
 		L) arg_ld_std_ust=1;;
 		m) arg_preload_malloc=1;;
 		f) arg_preload_fork=1;;
 		s) arg_syswide_daemon=1;;
+		W) where=1;;
 		h) usage;
 		   exit 0;;
 		\?) usage
@@ -73,6 +74,11 @@ while getopts ":hlLmfs" options; do
 done
 shift $(($OPTIND - 1))
 
+if [ -n "$where" ]; then
+	echo $BASE_TRACE_DIR/$(ls "$BASE_TRACE_DIR" | tail -n 1)
+	exit 0
+fi
+
 # Prepare vars
 CMD=$*
 
@@ -90,7 +96,7 @@ then
 fi
 
 # Create directory for trace output
-DATESTRING="$(hostname)-$(date +%Y%m%d%H%M%S)"
+DATESTRING="$(hostname)-$(date +%Y%m%d%H%M%S%N)"
 OUTDIR="$BASE_TRACE_DIR/$DATESTRING"
 mkdir -p "$OUTDIR"
 
@@ -145,12 +151,6 @@ fi
 	export LD_PRELOAD="$LD_PRELOAD:$LIBINTERFORK_PATH"
     fi
 
-# Install a handler for SIGIO. This is the signal that will be sent by ustd to
-# the traced program to trigger the creation of its listener thread. However,
-# it is possible that the SIGIO will be sent after the shell fork, but before
-# the exec of the command. If this handler isn't there, bash might terminate
-# because of a unhandled signal.
-
 # Execute the command
     $CMD 2>&1
 ) | tee "$OUTDIR/app.log"