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46 lines
1 KiB
Text
46 lines
1 KiB
Text
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#!/usr/bin/stap
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/*
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* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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*
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* apitrace - Display DB API calls and return values
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*
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* The path to the DB library is required to be the first argument.
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*
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* To limit tracing to a particular process use one of the stap options:
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* -x <pid> or
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* -c "<program> [<program arguments>..]"
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*
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*/
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global tracecount, maxlimit;
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probe begin
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{
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printf("DB API call trace of ");
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if (target() == 0)
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printf("processes using \"%s\"\n", @1);
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else
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printf("process %d\n", target());
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printf("Interrupt to display summary\n");
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maxlimit = -1;
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%( $# >= 2 %? maxlimit = $2 %)
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tracecount = 0;
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}
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probe process(@1).function("db_*create").call,
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process(@1).function("__*_*pp").call
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{
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printf("%s -> %s called with (%s)\n",
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thread_indent(1), probefunc(), $$parms);
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}
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probe process(@1).function("db*_create").return,
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process(@1).function("__*_*pp").return
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{
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printf("%s <- %s returns %d\n", thread_indent(-1),
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probefunc(), $return)
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if (++tracecount == maxlimit)
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exit();
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}
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