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/**
* Copyright (C) 2014 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.
*/
#ifdef _WIN32
#define NVALGRIND
#endif
#include "mongo/platform/basic.h"
#include <algorithm>
#include <gperftools/malloc_extension.h>
#include <valgrind/valgrind.h>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/init.h"
#include "mongo/base/parse_number.h"
#include "mongo/base/status.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/server_parameters.h"
#include "mongo/util/mongoutils/str.h"
#include "mongo/util/processinfo.h"
namespace mongo {
namespace {
class TcmallocNumericPropertyServerParameter : public ServerParameter {
MONGO_DISALLOW_COPYING(TcmallocNumericPropertyServerParameter);
public:
explicit TcmallocNumericPropertyServerParameter(const std::string& serverParameterName,
const std::string& tcmallocPropertyName);
virtual void append(OperationContext* txn, BSONObjBuilder& b, const std::string& name);
virtual Status set(const BSONElement& newValueElement);
virtual Status setFromString(const std::string& str);
private:
const std::string _tcmallocPropertyName;
};
TcmallocNumericPropertyServerParameter::TcmallocNumericPropertyServerParameter(
const std::string& serverParameterName, const std::string& tcmallocPropertyName)
: ServerParameter(ServerParameterSet::getGlobal(),
serverParameterName,
true /* change at startup */,
true /* change at runtime */),
_tcmallocPropertyName(tcmallocPropertyName) {}
void TcmallocNumericPropertyServerParameter::append(OperationContext* txn,
BSONObjBuilder& b,
const std::string& name) {
size_t value;
if (MallocExtension::instance()->GetNumericProperty(_tcmallocPropertyName.c_str(), &value)) {
b.appendNumber(name, value);
}
}
Status TcmallocNumericPropertyServerParameter::set(const BSONElement& newValueElement) {
if (!newValueElement.isNumber()) {
return Status(ErrorCodes::TypeMismatch,
str::stream() << "Expected server parameter " << newValueElement.fieldName()
<< " to have numeric type, but found "
<< newValueElement.toString(false) << " of type "
<< typeName(newValueElement.type()));
}
long long valueAsLongLong = newValueElement.safeNumberLong();
if (valueAsLongLong < 0 ||
static_cast<unsigned long long>(valueAsLongLong) > std::numeric_limits<size_t>::max()) {
return Status(ErrorCodes::BadValue,
str::stream()
<< "Value " << newValueElement.toString(false) << " is out of range for "
<< newValueElement.fieldName() << "; expected a value between 0 and "
<< std::min<unsigned long long>(std::numeric_limits<size_t>::max(),
std::numeric_limits<long long>::max()));
}
if (!RUNNING_ON_VALGRIND) {
if (!MallocExtension::instance()->SetNumericProperty(
_tcmallocPropertyName.c_str(), static_cast<size_t>(valueAsLongLong))) {
return Status(ErrorCodes::InternalError,
str::stream() << "Failed to set internal tcmalloc property "
<< _tcmallocPropertyName);
}
}
return Status::OK();
}
Status TcmallocNumericPropertyServerParameter::setFromString(const std::string& str) {
long long valueAsLongLong;
Status status = parseNumberFromString(str, &valueAsLongLong);
if (!status.isOK()) {
return status;
}
BSONObjBuilder builder;
builder.append(name(), valueAsLongLong);
return set(builder.done().firstElement());
}
TcmallocNumericPropertyServerParameter tcmallocMaxTotalThreadCacheBytesParameter(
"tcmallocMaxTotalThreadCacheBytes", "tcmalloc.max_total_thread_cache_bytes");
TcmallocNumericPropertyServerParameter tcmallocAggressiveMemoryDecommit(
"tcmallocAggressiveMemoryDecommit", "tcmalloc.aggressive_memory_decommit");
MONGO_INITIALIZER_GENERAL(TcmallocConfigurationDefaults,
("SystemInfo"),
("BeginStartupOptionHandling"))(InitializerContext*) {
// Before processing the command line options, if the user has not specified a value in via
// the environment, set tcmalloc.max_total_thread_cache_bytes to its default value.
if (getenv("TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES")) {
return Status::OK();
}
ProcessInfo pi;
size_t systemMemorySizeMB = pi.getMemSizeMB();
size_t defaultTcMallocCacheSize = 1024 * 1024 * 1024; // 1024MB in bytes
size_t derivedTcMallocCacheSize =
(systemMemorySizeMB / 8) * 1024 * 1024; // 1/8 of system memory in bytes
size_t cacheSize = std::min(defaultTcMallocCacheSize, derivedTcMallocCacheSize);
return tcmallocMaxTotalThreadCacheBytesParameter.setFromString(std::to_string(cacheSize));
}
} // namespace
} // namespace mongo
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