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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <config.h>
#include <signal.h>
#include <drizzled/function/func.h>
#include <drizzled/item/cmpfunc.h>
#include <drizzled/item/function/boolean.h>
#include <drizzled/plugin/function.h>
#include <drizzled/util/backtrace.h>
using namespace drizzled;
namespace debug {
class Assert :public item::function::Boolean
{
public:
Assert() :
item::function::Boolean()
{
unsigned_flag= true;
}
const char *func_name() const { return "assert_and_crash"; }
const char *fully_qualified_func_name() const { return "assert_and_crash()"; }
bool val_bool()
{
String _res;
String *res= args[0]->val_str(&_res);
null_value= false;
if (not res or not res->length())
{
assert(0);
return true;
}
return false;
}
int64_t val_int()
{
return val_bool();
}
bool check_argument_count(int n)
{
return (n == 1);
}
};
class Backtrace :public item::function::Boolean
{
public:
Backtrace() :
item::function::Boolean()
{
unsigned_flag= true;
}
const char *func_name() const { return "backtrace"; }
const char *fully_qualified_func_name() const { return "backtrace()"; }
bool val_bool()
{
call_backtrace();
return true;
}
int64_t val_int()
{
return val_bool();
}
};
class Crash :public item::function::Boolean
{
public:
Crash() :
item::function::Boolean()
{ }
const char *func_name() const { return "crash"; }
const char *fully_qualified_func_name() const { return "crash()"; }
bool val_bool()
{
raise(SIGSEGV);
return true;
}
int64_t val_int()
{
return val_bool();
}
};
} // namespace debug
static int initialize(drizzled::module::Context &context)
{
context.add(new drizzled::plugin::Create_function<debug::Assert>("assert_and_crash"));
context.add(new drizzled::plugin::Create_function<debug::Backtrace>("backtrace"));
context.add(new drizzled::plugin::Create_function<debug::Crash>("crash"));
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"debug",
"1.1",
"Brian Aker",
"Useful functions for programmers to debug the server.",
PLUGIN_LICENSE_BSD,
initialize, /* Plugin Init */
NULL, /* depends */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
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