/usr/include/mongo/util/assert_util.h is in mongodb-dev 1:2.4.9-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* 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
#include <iostream>
#include <typeinfo>
#include <string>
#include "mongo/base/status.h" // NOTE: This is safe as utils depend on base
#include "mongo/bson/inline_decls.h"
#include "mongo/platform/compiler.h"
namespace mongo {
enum CommonErrorCodes {
OkCode = 0,
DatabaseDifferCaseCode = 13297 , // uassert( 13297 )
SendStaleConfigCode = 13388 , // uassert( 13388 )
RecvStaleConfigCode = 9996, // uassert( 9996 )
PrepareConfigsFailedCode = 13104 // uassert( 13104 )
};
class AssertionCount {
public:
AssertionCount();
void rollover();
void condrollover( int newValue );
int regular;
int warning;
int msg;
int user;
int rollovers;
};
extern AssertionCount assertionCount;
class BSONObjBuilder;
struct ExceptionInfo {
ExceptionInfo() : msg(""),code(-1) {}
ExceptionInfo( const char * m , int c )
: msg( m ) , code( c ) {
}
ExceptionInfo( const std::string& m , int c )
: msg( m ) , code( c ) {
}
void append( BSONObjBuilder& b , const char * m = "$err" , const char * c = "code" ) const ;
std::string toString() const;
bool empty() const { return msg.empty(); }
void reset(){ msg = ""; code=-1; }
std::string msg;
int code;
};
/** helper class that builds error strings. lighter weight than a StringBuilder, albeit less flexible.
NOINLINE_DECL used in the constructor implementations as we are assuming this is a cold code path when used.
example:
throw UserException(123, ErrorMsg("blah", num_val));
*/
class ErrorMsg {
public:
ErrorMsg(const char *msg, char ch);
ErrorMsg(const char *msg, unsigned val);
operator std::string() const { return buf; }
private:
char buf[256];
};
class DBException;
std::string causedBy( const DBException& e );
std::string causedBy( const std::string& e );
bool inShutdown();
/** Most mongo exceptions inherit from this; this is commonly caught in most threads */
class DBException : public std::exception {
public:
DBException( const ExceptionInfo& ei ) : _ei(ei) { traceIfNeeded(*this); }
DBException( const char * msg , int code ) : _ei(msg,code) { traceIfNeeded(*this); }
DBException( const std::string& msg , int code ) : _ei(msg,code) { traceIfNeeded(*this); }
virtual ~DBException() throw() { }
virtual const char* what() const throw() { return _ei.msg.c_str(); }
virtual int getCode() const { return _ei.code; }
virtual void appendPrefix( std::stringstream& ss ) const { }
virtual void addContext( const std::string& str ) {
_ei.msg = str + causedBy( _ei.msg );
}
// Utilities for the migration to Status objects
static ErrorCodes::Error convertExceptionCode(int exCode);
Status toStatus(const std::string& context) const {
return Status(convertExceptionCode(getCode()), context + causedBy(*this));
}
Status toStatus() const {
return Status(convertExceptionCode(getCode()), this->toString());
}
// context when applicable. otherwise ""
std::string _shard;
virtual std::string toString() const;
const ExceptionInfo& getInfo() const { return _ei; }
private:
static void traceIfNeeded( const DBException& e );
public:
static bool traceExceptions;
protected:
ExceptionInfo _ei;
};
class AssertionException : public DBException {
public:
AssertionException( const ExceptionInfo& ei ) : DBException(ei) {}
AssertionException( const char * msg , int code ) : DBException(msg,code) {}
AssertionException( const std::string& msg , int code ) : DBException(msg,code) {}
virtual ~AssertionException() throw() { }
virtual bool severe() { return true; }
virtual bool isUserAssertion() { return false; }
/* true if an interrupted exception - see KillCurrentOp */
bool interrupted() {
return _ei.code == 11600 || _ei.code == 11601;
}
};
/* UserExceptions are valid errors that a user can cause, like out of disk space or duplicate key */
class UserException : public AssertionException {
public:
UserException(int c , const std::string& m) : AssertionException( m , c ) {}
virtual bool severe() { return false; }
virtual bool isUserAssertion() { return true; }
virtual void appendPrefix( std::stringstream& ss ) const;
};
class MsgAssertionException : public AssertionException {
public:
MsgAssertionException( const ExceptionInfo& ei ) : AssertionException( ei ) {}
MsgAssertionException(int c, const std::string& m) : AssertionException( m , c ) {}
virtual bool severe() { return false; }
virtual void appendPrefix( std::stringstream& ss ) const;
};
MONGO_COMPILER_NORETURN void verifyFailed(const char *msg, const char *file, unsigned line);
void wasserted(const char *msg, const char *file, unsigned line);
MONGO_COMPILER_NORETURN void fassertFailed( int msgid );
/** a "user assertion". throws UserAssertion. logs. typically used for errors that a user
could cause, such as duplicate key, disk full, etc.
*/
MONGO_COMPILER_NORETURN void uasserted(int msgid, const char *msg);
MONGO_COMPILER_NORETURN void uasserted(int msgid , const std::string &msg);
/** msgassert and massert are for errors that are internal but have a well defined error text std::string.
a stack trace is logged.
*/
MONGO_COMPILER_NORETURN void msgassertedNoTrace(int msgid, const char *msg);
MONGO_COMPILER_NORETURN inline void msgassertedNoTrace(int msgid, const std::string& msg) {
msgassertedNoTrace( msgid , msg.c_str() );
}
MONGO_COMPILER_NORETURN void msgasserted(int msgid, const char *msg);
MONGO_COMPILER_NORETURN void msgasserted(int msgid, const std::string &msg);
/* convert various types of exceptions to strings */
inline std::string causedBy( const char* e ){ return (std::string)" :: caused by :: " + e; }
inline std::string causedBy( const DBException& e ){ return causedBy( e.toString().c_str() ); }
inline std::string causedBy( const std::exception& e ){ return causedBy( e.what() ); }
inline std::string causedBy( const std::string& e ){ return causedBy( e.c_str() ); }
inline std::string causedBy( const std::string* e ){
return (e && *e != "") ? causedBy(*e) : "";
}
inline std::string causedBy( const Status& e ){ return causedBy( e.reason() ); }
/** aborts on condition failure */
inline void fassert(int msgid, bool testOK) {if (MONGO_unlikely(!testOK)) fassertFailed(msgid);}
/* "user assert". if asserts, user did something wrong, not our code */
#define MONGO_uassert(msgid, msg, expr) (void)( MONGO_likely(!!(expr)) || (mongo::uasserted(msgid, msg), 0) )
#define MONGO_uassertStatusOK(expr) do { \
Status status = (expr); \
if (!status.isOK()) \
uasserted(status.location() != 0 ? status.location() : status.code(), \
status.reason()); \
} while(0)
/* warning only - keeps going */
#define MONGO_wassert(_Expression) (void)( MONGO_likely(!!(_Expression)) || (mongo::wasserted(#_Expression, __FILE__, __LINE__), 0) )
/* display a message, no context, and throw assertionexception
easy way to throw an exception and log something without our stack trace
display happening.
*/
#define MONGO_massert(msgid, msg, expr) (void)( MONGO_likely(!!(expr)) || (mongo::msgasserted(msgid, msg), 0) )
/* same as massert except no msgid */
#define MONGO_verify(_Expression) (void)( MONGO_likely(!!(_Expression)) || (mongo::verifyFailed(#_Expression, __FILE__, __LINE__), 0) )
/* dassert is 'debug assert' -- might want to turn off for production as these
could be slow.
*/
#if defined(_DEBUG)
# define MONGO_dassert(x) fassert(16199, (x))
#else
# define MONGO_dassert(x)
#endif
/** Allows to jump code during exeuction. */
inline bool debugCompare(bool inDebug, bool condition) { return inDebug && condition; }
#if defined(_DEBUG)
# define MONGO_debug_and(x) debugCompare(true, (x))
#else
# define MONGO_debug_and(x) debugCompare(false, (x))
#endif
#ifdef MONGO_EXPOSE_MACROS
# define dcompare MONGO_debug_and
# define dassert MONGO_dassert
# define verify MONGO_verify
# define uassert MONGO_uassert
# define uassertStatusOK MONGO_uassertStatusOK
# define wassert MONGO_wassert
# define massert MONGO_massert
#endif
// some special ids that we want to duplicate
// > 10000 asserts
// < 10000 UserException
enum { ASSERT_ID_DUPKEY = 11000 };
/* throws a uassertion with an appropriate msg */
MONGO_COMPILER_NORETURN void streamNotGood( int code, const std::string& msg, std::ios& myios );
inline void assertStreamGood(unsigned msgid, const std::string& msg, std::ios& myios) {
if( !myios.good() ) streamNotGood(msgid, msg, myios);
}
std::string demangleName( const std::type_info& typeinfo );
} // namespace mongo
#define MONGO_ASSERT_ON_EXCEPTION( expression ) \
try { \
expression; \
} catch ( const std::exception &e ) { \
stringstream ss; \
ss << "caught exception: " << e.what() << ' ' << __FILE__ << ' ' << __LINE__; \
msgasserted( 13294 , ss.str() ); \
} catch ( ... ) { \
massert( 10437 , "unknown exception" , false ); \
}
#define MONGO_ASSERT_ON_EXCEPTION_WITH_MSG( expression, msg ) \
try { \
expression; \
} catch ( const std::exception &e ) { \
stringstream ss; \
ss << msg << " caught exception exception: " << e.what(); \
msgasserted( 14043 , ss.str() ); \
} catch ( ... ) { \
msgasserted( 14044 , std::string("unknown exception") + msg ); \
}
#define DESTRUCTOR_GUARD MONGO_DESTRUCTOR_GUARD
#define MONGO_DESTRUCTOR_GUARD( expression ) \
try { \
expression; \
} catch ( const std::exception &e ) { \
problem() << "caught exception (" << e.what() << ") in destructor (" << __FUNCTION__ << ")" << endl; \
} catch ( ... ) { \
problem() << "caught unknown exception in destructor (" << __FUNCTION__ << ")" << endl; \
}
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