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119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
// lasterror.h
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/**
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* Copyright (C) 2009 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <boost/thread/tss.hpp>
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#undef assert
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#define assert xassert
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namespace mongo {
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class BSONObjBuilder;
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class Message;
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struct LastError {
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string msg;
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enum UpdatedExistingType { NotUpdate, True, False } updatedExisting;
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int nObjects;
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int nPrev;
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bool valid;
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bool overridenById;
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void raiseError(const char *_msg) {
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reset( true );
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msg = _msg;
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}
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void recordUpdate( bool _updatedExisting, int nChanged ) {
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reset( true );
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nObjects = nChanged;
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updatedExisting = _updatedExisting ? True : False;
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}
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void recordDelete( int nDeleted ) {
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reset( true );
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nObjects = nDeleted;
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}
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LastError() {
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overridenById = false;
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reset();
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}
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void reset( bool _valid = false ) {
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msg.clear();
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updatedExisting = NotUpdate;
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nObjects = 0;
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nPrev = 1;
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valid = _valid;
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}
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void appendSelf( BSONObjBuilder &b );
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static LastError noError;
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};
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extern class LastErrorHolder {
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public:
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LastErrorHolder() : _id( 0 ){}
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LastError * get( bool create = false );
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void reset( LastError * le );
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/**
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* id of 0 means should use thread local management
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*/
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void setID( int id );
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int getID();
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void remove( int id );
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void release();
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/** when db receives a message/request, call this */
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void startRequest( Message& m , LastError * connectionOwned );
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void startRequest( Message& m );
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private:
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ThreadLocalValue<int> _id;
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boost::thread_specific_ptr<LastError> _tl;
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struct Status {
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time_t time;
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LastError *lerr;
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};
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static boost::mutex _idsmutex;
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map<int,Status> _ids;
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} lastError;
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inline void raiseError(const char *msg) {
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LastError *le = lastError.get();
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if ( le == 0 ) {
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DEV log() << "warning: lastError==0 can't report:" << msg << '\n';
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return;
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}
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le->raiseError(msg);
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}
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inline void recordUpdate( bool updatedExisting, int nChanged ) {
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LastError *le = lastError.get();
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if ( le )
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le->recordUpdate( updatedExisting, nChanged );
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}
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inline void recordDelete( int nDeleted ) {
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LastError *le = lastError.get();
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if ( le )
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le->recordDelete( nDeleted );
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}
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} // namespace mongo
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