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// debug_util.h
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#ifndef _WIN32
#include <signal.h>
#endif // ndef _WIN32
namespace mongo {
// for debugging
typedef struct _Ints {
int i[100];
} *Ints;
typedef struct _Chars {
char c[200];
} *Chars;
typedef char CHARS[400];
typedef struct _OWS {
int size;
char type;
char string[400];
} *OWS;
// for now, running on win32 means development not production --
// use this to log things just there.
#if defined(_WIN32)
#define WIN if( 1 )
#else
#define WIN if( 0 )
#endif
#if defined(_DEBUG)
#define DEV if( 1 )
#else
#define DEV if( 0 )
#endif
#define DEBUGGING if( 0 )
// The following declare one unique counter per enclosing function.
// NOTE The implementation double-increments on a match, but we don't really care.
#define SOMETIMES( occasion, howOften ) for( static unsigned occasion = 0; ++occasion % howOften == 0; )
#define OCCASIONALLY SOMETIMES( occasionally, 16 )
#define RARELY SOMETIMES( rarely, 128 )
#define ONCE for( static bool undone = true; undone; undone = false )
#if defined(_WIN32)
#define strcasecmp _stricmp
#endif
// Sets SIGTRAP handler to launch GDB
// Noop unless on *NIX and compiled with _DEBUG
void setupSIGTRAPforGDB();
#if defined(_WIN32)
inline void breakpoint() {} //noop
#else // defined(_WIN32)
// code to raise a breakpoint in GDB
inline void breakpoint(){
ONCE {
//prevent SIGTRAP from crashing the program if default action is specified and we are not in gdb
struct sigaction current;
sigaction(SIGTRAP, NULL, ¤t);
if (current.sa_handler == SIG_DFL){
signal(SIGTRAP, SIG_IGN);
}
}
raise(SIGTRAP);
}
#endif // defined(_WIN32)
// conditional breakpoint
inline void breakif(bool test){
if (test)
breakpoint();
}
} // namespace mongo
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