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// assert_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
#include "../db/lasterror.h"
namespace mongo {
enum CommonErrorCodes {
DatabaseDifferCaseCode = 13297 ,
StaleConfigInContextCode = 13388
};
/* these are manipulated outside of mutexes, so be careful */
struct Assertion {
Assertion() {
msg[0] = msg[127] = 0;
context[0] = context[127] = 0;
file = "";
line = 0;
when = 0;
}
private:
static mongo::mutex *_mutex;
char msg[128];
char context[128];
const char *file;
unsigned line;
time_t when;
public:
void set(const char *m, const char *ctxt, const char *f, unsigned l) {
if( _mutex == 0 ) {
/* asserted during global variable initialization */
return;
}
scoped_lock lk(*_mutex);
strncpy(msg, m, 127);
strncpy(context, ctxt, 127);
file = f;
line = l;
when = time(0);
}
std::string toString();
bool isSet() {
return when != 0;
}
};
enum {
AssertRegular = 0,
AssertW = 1,
AssertMsg = 2,
AssertUser = 3
};
/* last assert of diff types: regular, wassert, msgassert, uassert: */
extern Assertion lastAssert[4];
class AssertionCount {
public:
AssertionCount();
void rollover();
void condrollover( int newValue );
int regular;
int warning;
int msg;
int user;
int rollovers;
};
extern AssertionCount assertionCount;
struct ExceptionInfo {
ExceptionInfo() : msg(""),code(-1){}
ExceptionInfo( const char * m , int c )
: msg( m ) , code( c ){
}
ExceptionInfo( const string& m , int c )
: msg( m ) , code( c ){
}
void append( BSONObjBuilder& b , const char * m = "$err" , const char * c = "code" ) const ;
string toString() const { stringstream ss; ss << "exception: " << code << " " << msg; return ss.str(); }
bool empty() const { return msg.empty(); }
string msg;
int code;
};
class DBException : public std::exception {
public:
DBException( const ExceptionInfo& ei ) : _ei(ei){}
DBException( const char * msg , int code ) : _ei(msg,code){}
DBException( const string& msg , int code ) : _ei(msg,code){}
virtual ~DBException() throw() { }
virtual const char* what() const throw(){ return _ei.msg.c_str(); }
virtual int getCode() const { return _ei.code; }
virtual void appendPrefix( stringstream& ss ) const { }
virtual string toString() const {
stringstream ss; ss << getCode() << " " << what(); return ss.str();
return ss.str();
}
const ExceptionInfo& getInfo() const { return _ei; }
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 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 string& m) : AssertionException( m , c ){}
virtual bool severe() { return false; }
virtual bool isUserAssertion() { return true; }
virtual void appendPrefix( stringstream& ss ) const { ss << "userassert:"; }
};
class MsgAssertionException : public AssertionException {
public:
MsgAssertionException( const ExceptionInfo& ei ) : AssertionException( ei ){}
MsgAssertionException(int c, const string& m) : AssertionException( m , c ){}
virtual bool severe() { return false; }
virtual void appendPrefix( stringstream& ss ) const { ss << "massert:"; }
};
void asserted(const char *msg, const char *file, unsigned line);
void wasserted(const char *msg, const char *file, unsigned line);
void uasserted(int msgid, const char *msg);
inline void uasserted(int msgid , string msg) { uasserted(msgid, msg.c_str()); }
void uassert_nothrow(const char *msg); // reported via lasterror, but don't throw exception
void msgassertedNoTrace(int msgid, const char *msg);
void msgasserted(int msgid, const char *msg);
inline void msgasserted(int msgid, string msg) { msgasserted(msgid, msg.c_str()); }
#ifdef assert
#undef assert
#endif
#define MONGO_assert(_Expression) (void)( (!!(_Expression)) || (mongo::asserted(#_Expression, __FILE__, __LINE__), 0) )
#define assert MONGO_assert
/* "user assert". if asserts, user did something wrong, not our code */
#define MONGO_uassert(msgid, msg, expr) (void)( (!!(expr)) || (mongo::uasserted(msgid, msg), 0) )
#define uassert MONGO_uassert
/* warning only - keeps going */
#define MONGO_wassert(_Expression) (void)( (!!(_Expression)) || (mongo::wasserted(#_Expression, __FILE__, __LINE__), 0) )
#define wassert MONGO_wassert
/* 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)( (!!(expr)) || (mongo::msgasserted(msgid, msg), 0) )
#define massert MONGO_massert
/* dassert is 'debug assert' -- might want to turn off for production as these
could be slow.
*/
#if defined(_DEBUG)
# define MONGO_dassert assert
#else
# define MONGO_dassert(x)
#endif
#define dassert MONGO_dassert
// some special ids that we want to duplicate
// > 10000 asserts
// < 10000 UserException
enum { ASSERT_ID_DUPKEY = 11000 };
/* throws a uassertion with an appropriate msg */
void streamNotGood( int code , string msg , std::ios& myios );
inline void assertStreamGood(unsigned msgid, string msg, std::ios& myios) {
if( !myios.good() ) streamNotGood(msgid, msg, myios);
}
string demangleName( const type_info& typeinfo );
} // namespace mongo
#define BOOST_CHECK_EXCEPTION MONGO_BOOST_CHECK_EXCEPTION
#define MONGO_BOOST_CHECK_EXCEPTION( expression ) \
try { \
expression; \
} catch ( const std::exception &e ) { \
stringstream ss; \
ss << "caught boost exception: " << e.what(); \
msgasserted( 13294 , ss.str() ); \
} catch ( ... ) { \
massert( 10437 , "unknown boost failed" , false ); \
}
#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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