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https://github.com/mongodb/mongo.git
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99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
// debug_util.h
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/* Copyright 2009 10gen Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#ifndef _WIN32
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#include <signal.h>
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#endif
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namespace mongo {
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// for debugging
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typedef struct _Ints {
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int i[100];
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} *Ints;
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typedef struct _Chars {
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char c[200];
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} *Chars;
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typedef char CHARS[400];
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typedef struct _OWS {
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int size;
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char type;
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char string[400];
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} *OWS;
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#if defined(_DEBUG)
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# define MONGO_DEV if( 1 )
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#else
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# define MONGO_DEV if( 0 )
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#endif
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#define DEV MONGO_DEV
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#define MONGO_DEBUGGING if( 0 )
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#define DEBUGGING MONGO_DEBUGGING
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// The following declare one unique counter per enclosing function.
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// NOTE The implementation double-increments on a match, but we don't really care.
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#define MONGO_SOMETIMES( occasion, howOften ) for( static unsigned occasion = 0; ++occasion % howOften == 0; )
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#define SOMETIMES MONGO_SOMETIMES
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#define MONGO_OCCASIONALLY SOMETIMES( occasionally, 16 )
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#define OCCASIONALLY MONGO_OCCASIONALLY
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#define MONGO_RARELY SOMETIMES( rarely, 128 )
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#define RARELY MONGO_RARELY
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#define MONGO_ONCE for( static bool undone = true; undone; undone = false )
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#define ONCE MONGO_ONCE
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#if defined(_WIN32)
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inline int strcasecmp(const char* s1, const char* s2) {return _stricmp(s1, s2);}
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#endif
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// Sets SIGTRAP handler to launch GDB
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// Noop unless on *NIX and compiled with _DEBUG
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void setupSIGTRAPforGDB();
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#if defined(_WIN32)
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inline void breakpoint() {} //noop
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#else // defined(_WIN32)
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// code to raise a breakpoint in GDB
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inline void breakpoint(){
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ONCE {
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//prevent SIGTRAP from crashing the program if default action is specified and we are not in gdb
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struct sigaction current;
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sigaction(SIGTRAP, NULL, ¤t);
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if (current.sa_handler == SIG_DFL){
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signal(SIGTRAP, SIG_IGN);
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}
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}
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raise(SIGTRAP);
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}
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#endif // defined(_WIN32)
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// conditional breakpoint
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inline void breakif(bool test){
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if (test)
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breakpoint();
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}
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} // namespace mongo
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