71 lines
1.7 KiB
Awk
71 lines
1.7 KiB
Awk
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#!/bin/sh
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#
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# trace.awk - Fast trace symbol resolver - w@1wt.eu - 2012/05/25
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#
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# Principle: this program launches reads pointers from a trace file and if not
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# found in its cache, it passes them over a pipe to addr2line which is forked
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# in a coprocess, then stores the result in the cache.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version
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# 2 of the License, or (at your option) any later version.
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#
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# usage: $0 exec_file < trace.out
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#
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if [ $# -lt 1 ]; then
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echo "Usage: ${0##*/} exec_file < trace.out"
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echo "Example: ${0##*/} ./haproxy < trace.out"
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echo "Example: HAPROXY_TRACE=/dev/stdout ./haproxy -f cfg | ${0##*/} ./haproxy"
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exit 1
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fi
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if [ ! -s "$1" ]; then
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echo "$1 is not a valid executable file"
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exit 1
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fi
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exec awk -v prog="$1" \
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'
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BEGIN {
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if (cmd == "")
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cmd=ENVIRON["ADDR2LINE"];
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if (cmd == "")
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cmd="addr2line";
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if (prog == "")
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prog=ENVIRON["PROG"];
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cmd=cmd " -f -e " prog;
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for (i = 1; i < 100; i++) {
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indents[">",i] = indents[">",i-1] "->"
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indents[">",i-1] = indents[">",i-1] " "
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indents["<",i] = indents["<",i-1] " "
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indents["<",i-1] = indents["<",i-1] " "
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}
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}
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function getptr(ptr)
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{
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loc=locs[ptr];
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name=names[ptr];
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if (loc == "" || name == "") {
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print ptr |& cmd;
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cmd |& getline name;
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cmd |& getline loc;
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names[ptr]=name
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locs[ptr]=loc
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}
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}
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{
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# input format: <timestamp> <level> <caller> <dir> <callee>
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getptr($3); caller_loc=loc; caller_name=name
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getptr($5); callee_loc=loc; callee_name=name
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printf "%s %s %s %s %s [%s:%s] %s [%s:%s]\n",
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$1, indents[$4,$2], caller_name, $4, callee_name, caller_loc, $3, $4, callee_loc, $5
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}
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'
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