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51 lines
1.3 KiB
Text
Executable file
51 lines
1.3 KiB
Text
Executable file
#!/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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* apicalls - Summarize DB API call count grouped by thread.
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*
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* This summarizes the count of DB apicalls grouped by thread or process.
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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 calls
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probe begin
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{
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printf("DB API call counts of ");
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if (target() == 0)
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printf("processes using \"%s\"", @1)
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else
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printf("process %d", target());
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printf("; interrupt to display summary\n")
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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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calls[(target() == 0 ? pid() : tid()), probefunc()] <<< 1;
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}
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probe end
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{
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any_seen = 0;
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/* Display counts grouped by process, or by thread. */
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if (target() == 0)
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printf("%-20s %7s %9s\n",
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"Function", "process", "callcount")
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else
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printf("%-20s %7s %9s for process %d\n",
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"Function", "thread", "callcount", target());
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foreach ([a,b] in calls+) {
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printf("%-20s %7d %9d\n", b, a, @count(calls[a,b]));
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any_seen = 1;
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}
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if (!any_seen)
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printf("No probes were triggered in %s; it might not be the correct library\n", @1);
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}
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