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63 lines
1.5 KiB
Text
63 lines
1.5 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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* showerror.stp - Capture context about certain DB errors.
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*
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* This shows the stack when a variant of DB->err() is called.
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* Specify the target process on the command line as
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* -p <pid> or
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* -c "<program> [<args>..]"
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*
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* This script does not require DWARF symbols in libdb.
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*/
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global errors, errorcount, maxlimit;
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probe begin
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{
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errorcount = 0;
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maxlimit = -1;
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%( $# >= 2 %? maxlimit = $2 %)
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printf("Display DB stack when ");
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if (pid() == 0)
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printf("an application using %s", @1)
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else
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printf("process %d", pid());
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printf(" prints a DB internal error message: limit %d\n", maxlimit);
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}
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/* __db_err(ENV *, int errorcode, char *message, ...) */
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probe process(@1).function("__db_err").call
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{
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message = user_string(pointer_arg(3));
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printf("DB error %d message \"%s\"(%x,...) from:\n",
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int_arg(2), message, ulong_arg(4));
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print_backtrace();
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errors[message, backtrace()] <<< 1;
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if (++errorcount == maxlimit)
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exit();
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}
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/* __db_errx(ENV *, char *message, ...) */
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probe process(@1).function("__db_errx").call
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{
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message = user_string(pointer_arg(2));
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printf("DB error message \"%s\"(%x,...) parms %s from:\n", message,
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int_arg(3), $$parms);
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print_backtrace();
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errors[message, backtrace()] <<< 1;
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if (++errorcount == maxlimit)
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exit();
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}
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/* __env_panic(ENV *, int errorcode) */
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probe process(@1).function("__env_panic").call
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{
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printf("DB panic with error code %d from:\n", int_arg(2));
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print_backtrace();
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if (++errorcount == maxlimit)
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exit();
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}
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