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/**
* Copyright (C) 2015 MongoDB 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/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kQuery
#include "mongo/platform/basic.h"
#include "mongo/scripting/mozjs/engine.h"
#include "mongo/db/operation_context.h"
#include "mongo/scripting/mozjs/implscope.h"
#include "mongo/scripting/mozjs/proxyscope.h"
#include "mongo/util/log.h"
namespace mongo {
void ScriptEngine::setup() {
if (!globalScriptEngine) {
globalScriptEngine = new mozjs::MozJSScriptEngine();
if (hasGlobalServiceContext()) {
getGlobalServiceContext()->registerKillOpListener(globalScriptEngine);
}
}
}
std::string ScriptEngine::getInterpreterVersionString() {
return "MozJS-38";
}
namespace mozjs {
MozJSScriptEngine::MozJSScriptEngine() {
uassert(ErrorCodes::JSInterpreterFailure, "Failed to JS_Init()", JS_Init());
}
MozJSScriptEngine::~MozJSScriptEngine() {
JS_ShutDown();
}
mongo::Scope* MozJSScriptEngine::createScope() {
return new MozJSProxyScope(this);
}
void MozJSScriptEngine::interrupt(unsigned opId) {
stdx::lock_guard<stdx::mutex> intLock(_globalInterruptLock);
OpIdToScopeMap::iterator iScope = _opToScopeMap.find(opId);
if (iScope == _opToScopeMap.end()) {
// got interrupt request for a scope that no longer exists
LOG(1) << "received interrupt request for unknown op: " << opId << printKnownOps_inlock();
return;
}
LOG(1) << "interrupting op: " << opId << printKnownOps_inlock();
iScope->second->kill();
}
std::string MozJSScriptEngine::printKnownOps_inlock() {
str::stream out;
if (shouldLog(logger::LogSeverity::Debug(2))) {
out << " known ops: \n";
for (auto&& iSc : _opToScopeMap) {
out << " " << iSc.first << "\n";
}
}
return out;
}
void MozJSScriptEngine::interruptAll() {
stdx::lock_guard<stdx::mutex> interruptLock(_globalInterruptLock);
for (auto&& iScope : _opToScopeMap) {
iScope.second->kill();
}
}
void MozJSScriptEngine::registerOperation(OperationContext* txn, MozJSImplScope* scope) {
stdx::lock_guard<stdx::mutex> giLock(_globalInterruptLock);
auto opId = txn->getOpID();
_opToScopeMap[opId] = scope;
LOG(2) << "SMScope " << static_cast<const void*>(scope) << " registered for op " << opId;
Status status = txn->checkForInterruptNoAssert();
if (!status.isOK()) {
scope->kill();
}
}
void MozJSScriptEngine::unregisterOperation(unsigned int opId) {
stdx::lock_guard<stdx::mutex> giLock(_globalInterruptLock);
LOG(2) << "ImplScope " << static_cast<const void*>(this) << " unregistered for op " << opId;
if (opId != 0) {
// scope is currently associated with an operation id
auto it = _opToScopeMap.find(opId);
if (it != _opToScopeMap.end())
_opToScopeMap.erase(it);
}
}
} // namespace mozjs
} // namespace mongo
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