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Diffstat (limited to 'cddl/contrib/dtracetoolkit/Proc/lastwords')
-rwxr-xr-x | cddl/contrib/dtracetoolkit/Proc/lastwords | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/cddl/contrib/dtracetoolkit/Proc/lastwords b/cddl/contrib/dtracetoolkit/Proc/lastwords new file mode 100755 index 0000000..1258cc9 --- /dev/null +++ b/cddl/contrib/dtracetoolkit/Proc/lastwords @@ -0,0 +1,90 @@ +#!/usr/bin/ksh +# +# lastwords - print last few syscalls for dying processes. +# Written using DTrace (Solaris 10 3/05). +# +# $Id: lastwords 3 2007-08-01 10:50:08Z brendan $ +# +# This prints the last few system calls for processes matching +# the given name, when they exit. This makes use of a ring buffer +# so that the impact on the system is minimised. +# +# USAGE: lastwords command +# eg, +# lastwords netscape +# +# FIELDS: +# TIME Time of syscall return, ns +# PID Process ID +# EXEC Process name (execname) +# SYSCALL System call +# RETURN Return value for system call +# ERR errno for system call +# +# BASED ON: /usr/demo/dtrace/ring.d +# +# SEE ALSO: DTrace Guide "Buffers and Buffering" chapter (docs.sun.com) +# dtruss (DTraceToolkit) +# +# PORTIONS: Copyright (c) 2005, 2006 Brendan Gregg. +# +# CDDL HEADER START +# +# The contents of this file are subject to the terms of the +# Common Development and Distribution License, Version 1.0 only +# (the "License"). You may not use this file except in compliance +# with the License. +# +# You can obtain a copy of the license at Docs/cddl1.txt +# or http://www.opensolaris.org/os/licensing. +# See the License for the specific language governing permissions +# and limitations under the License. +# +# CDDL HEADER END +# +# 09-Jun-2005 Brendan Gregg Created this. +# 20-Apr-2006 " " Last update. +# + +### Usage +function usage +{ + cat <<-END >&2 + USAGE: lastwords command + eg, + lastwords netscape + END + exit 1 +} + +### Process arguments +if (( $# != 1 )); then + usage +fi +command=$1 + +print "Tracing... Waiting for $command to exit..." + +### Run DTrace +/usr/sbin/dtrace -n ' + #pragma D option quiet + #pragma D option bufpolicy=ring + #pragma D option bufsize=16k + + syscall:::return + /execname == $$1/ + { + /* buffer syscall details */ + printf("%-18d %5d %12s %12s %10x %3d\n", + timestamp,pid,execname,probefunc,(int)arg0,errno); + } + + proc::proc_exit:exit + /execname == $$1/ + { + /* print, erm, footer */ + printf("%-18s %5s %12s %12s %10s %3s\n", + "TIME","PID","EXEC","SYSCALL","RETURN","ERR"); + exit(0); + } +' "$command" |