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// background.cpp
/**
* Copyright (C) 2010 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mongo/db/background.h"
namespace mongo {
SimpleMutex BackgroundOperation::m("bg");
std::map<std::string, unsigned> BackgroundOperation::dbsInProg;
std::set<std::string> BackgroundOperation::nsInProg;
bool BackgroundOperation::inProgForDb(const StringData& db) {
SimpleMutex::scoped_lock lk(m);
return dbsInProg[db.toString()] > 0;
}
bool BackgroundOperation::inProgForNs(const StringData& ns) {
SimpleMutex::scoped_lock lk(m);
return nsInProg.count(ns.toString()) > 0;
}
void BackgroundOperation::assertNoBgOpInProgForDb(const StringData& db) {
uassert(12586,
"cannot perform operation: a background operation is currently running for this database",
!inProgForDb(db));
}
void BackgroundOperation::assertNoBgOpInProgForNs(const StringData& ns) {
uassert(12587,
"cannot perform operation: a background operation is currently running for this collection",
!inProgForNs(ns));
}
BackgroundOperation::BackgroundOperation(const StringData& ns) : _ns(ns) {
SimpleMutex::scoped_lock lk(m);
dbsInProg[_ns.db().toString()]++;
nsInProg.insert(_ns.ns());
}
BackgroundOperation::~BackgroundOperation() {
SimpleMutex::scoped_lock lk(m);
dbsInProg[_ns.db().toString()]--;
nsInProg.erase(_ns.ns());
}
void BackgroundOperation::dump(std::stringstream& ss) {
SimpleMutex::scoped_lock lk(m);
if( nsInProg.size() ) {
ss << "\n<b>Background Jobs in Progress</b>\n";
for( std::set<std::string>::iterator i = nsInProg.begin(); i != nsInProg.end(); i++ )
ss << " " << *i << '\n';
}
for( std::map<std::string,unsigned>::iterator i = dbsInProg.begin(); i != dbsInProg.end(); i++ ) {
if( i->second )
ss << "database " << i->first << ": " << i->second << '\n';
}
}
} // namespace mongo
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