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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kDefault
#ifdef _WIN32
#define NVALGRIND
#endif
#include "mongo/platform/basic.h"
#include <gperftools/malloc_extension.h>
#include <valgrind/valgrind.h>
#include "mongo/base/init.h"
#include "mongo/db/commands/server_status.h"
#include "mongo/db/service_context.h"
#include "mongo/transport/service_entry_point.h"
#include "mongo/util/tcmalloc_parameters_gen.h"
namespace mongo {
// TODO: Remove these implementations and the associated IDL definition in 4.3.
void TCMallocEnableMarkThreadTemporarilyIdle::append(OperationContext*,
BSONObjBuilder&,
const std::string&) {}
Status TCMallocEnableMarkThreadTemporarilyIdle::setFromString(const std::string&) {
return Status(ErrorCodes::BadValue,
"tcmallocEnableMarkThreadTemporarilyIdle has been removed. Setting this "
"parameter has no effect and it will be removed in a future version of "
"MongoDB.");
}
namespace {
class TCMallocServerStatusSection : public ServerStatusSection {
public:
TCMallocServerStatusSection() : ServerStatusSection("tcmalloc") {}
bool includeByDefault() const override {
return true;
}
BSONObj generateSection(OperationContext* opCtx,
const BSONElement& configElement) const override {
long long verbosity = 1;
if (configElement) {
// Relies on the fact that safeNumberLong turns non-numbers into 0.
long long configValue = configElement.safeNumberLong();
if (configValue) {
verbosity = configValue;
}
}
BSONObjBuilder builder;
// For a list of properties see the "Generic Tcmalloc Status" section of
// http://google-perftools.googlecode.com/svn/trunk/doc/tcmalloc.html and
// http://code.google.com/p/gperftools/source/browse/src/gperftools/malloc_extension.h
{
BSONObjBuilder sub(builder.subobjStart("generic"));
appendNumericPropertyIfAvailable(
sub, "current_allocated_bytes", "generic.current_allocated_bytes");
appendNumericPropertyIfAvailable(sub, "heap_size", "generic.heap_size");
}
{
BSONObjBuilder sub(builder.subobjStart("tcmalloc"));
appendNumericPropertyIfAvailable(
sub, "pageheap_free_bytes", "tcmalloc.pageheap_free_bytes");
appendNumericPropertyIfAvailable(
sub, "pageheap_unmapped_bytes", "tcmalloc.pageheap_unmapped_bytes");
appendNumericPropertyIfAvailable(
sub, "max_total_thread_cache_bytes", "tcmalloc.max_total_thread_cache_bytes");
appendNumericPropertyIfAvailable(sub,
"current_total_thread_cache_bytes",
"tcmalloc.current_total_thread_cache_bytes");
// Not including tcmalloc.slack_bytes since it is deprecated.
// Calculate total free bytes, *excluding the page heap*
size_t central;
size_t transfer;
size_t thread;
if (MallocExtension::instance()->GetNumericProperty("tcmalloc.central_cache_free_bytes",
¢ral) &&
MallocExtension::instance()->GetNumericProperty(
"tcmalloc.transfer_cache_free_bytes", &transfer) &&
MallocExtension::instance()->GetNumericProperty("tcmalloc.thread_cache_free_bytes",
&thread)) {
sub.appendNumber("total_free_bytes",
static_cast<long long>(central + transfer + thread));
}
appendNumericPropertyIfAvailable(
sub, "central_cache_free_bytes", "tcmalloc.central_cache_free_bytes");
appendNumericPropertyIfAvailable(
sub, "transfer_cache_free_bytes", "tcmalloc.transfer_cache_free_bytes");
appendNumericPropertyIfAvailable(
sub, "thread_cache_free_bytes", "tcmalloc.thread_cache_free_bytes");
appendNumericPropertyIfAvailable(
sub, "aggressive_memory_decommit", "tcmalloc.aggressive_memory_decommit");
appendNumericPropertyIfAvailable(
sub, "pageheap_committed_bytes", "tcmalloc.pageheap_committed_bytes");
appendNumericPropertyIfAvailable(
sub, "pageheap_scavenge_count", "tcmalloc.pageheap_scavenge_count");
appendNumericPropertyIfAvailable(
sub, "pageheap_commit_count", "tcmalloc.pageheap_commit_count");
appendNumericPropertyIfAvailable(
sub, "pageheap_total_commit_bytes", "tcmalloc.pageheap_total_commit_bytes");
appendNumericPropertyIfAvailable(
sub, "pageheap_decommit_count", "tcmalloc.pageheap_decommit_count");
appendNumericPropertyIfAvailable(
sub, "pageheap_total_decommit_bytes", "tcmalloc.pageheap_total_decommit_bytes");
appendNumericPropertyIfAvailable(
sub, "pageheap_reserve_count", "tcmalloc.pageheap_reserve_count");
appendNumericPropertyIfAvailable(
sub, "pageheap_total_reserve_bytes", "tcmalloc.pageheap_total_reserve_bytes");
appendNumericPropertyIfAvailable(
sub, "spinlock_total_delay_ns", "tcmalloc.spinlock_total_delay_ns");
auto tcmallocReleaseRate = MallocExtension::instance()->GetMemoryReleaseRate();
sub.appendNumber("release_rate", tcmallocReleaseRate);
#if MONGO_HAVE_GPERFTOOLS_SIZE_CLASS_STATS
if (verbosity >= 2) {
// Size class information
std::pair<BSONArrayBuilder, BSONArrayBuilder> builders(
builder.subarrayStart("size_classes"), BSONArrayBuilder());
// Size classes and page heap info is dumped in 1 call so that the performance
// sensitive tcmalloc page heap lock is only taken once
MallocExtension::instance()->SizeClasses(
&builders, appendSizeClassInfo, appendPageHeapInfo);
builders.first.done();
builder.append("page_heap", builders.second.arr());
}
#endif
char buffer[4096];
MallocExtension::instance()->GetStats(buffer, sizeof buffer);
builder.append("formattedString", buffer);
}
return builder.obj();
}
private:
static void appendNumericPropertyIfAvailable(BSONObjBuilder& builder,
StringData bsonName,
const char* property) {
size_t value;
if (MallocExtension::instance()->GetNumericProperty(property, &value))
builder.appendNumber(bsonName, static_cast<long long>(value));
}
#if MONGO_HAVE_GPERFTOOLS_SIZE_CLASS_STATS
static void appendSizeClassInfo(void* bsonarr_builder, const base::MallocSizeClass* stats) {
BSONArrayBuilder& builder =
reinterpret_cast<std::pair<BSONArrayBuilder, BSONArrayBuilder>*>(bsonarr_builder)
->first;
BSONObjBuilder doc;
doc.appendNumber("bytes_per_object", static_cast<long long>(stats->bytes_per_obj));
doc.appendNumber("pages_per_span", static_cast<long long>(stats->pages_per_span));
doc.appendNumber("num_spans", static_cast<long long>(stats->num_spans));
doc.appendNumber("num_thread_objs", static_cast<long long>(stats->num_thread_objs));
doc.appendNumber("num_central_objs", static_cast<long long>(stats->num_central_objs));
doc.appendNumber("num_transfer_objs", static_cast<long long>(stats->num_transfer_objs));
doc.appendNumber("free_bytes", static_cast<long long>(stats->free_bytes));
doc.appendNumber("allocated_bytes", static_cast<long long>(stats->alloc_bytes));
builder.append(doc.obj());
}
static void appendPageHeapInfo(void* bsonarr_builder, const base::PageHeapSizeClass* stats) {
BSONArrayBuilder& builder =
reinterpret_cast<std::pair<BSONArrayBuilder, BSONArrayBuilder>*>(bsonarr_builder)
->second;
BSONObjBuilder doc;
doc.appendNumber("pages", static_cast<long long>(stats->pages));
doc.appendNumber("normal_spans", static_cast<long long>(stats->normal_spans));
doc.appendNumber("unmapped_spans", static_cast<long long>(stats->unmapped_spans));
doc.appendNumber("normal_bytes", static_cast<long long>(stats->normal_bytes));
doc.appendNumber("unmapped_bytes", static_cast<long long>(stats->unmapped_bytes));
builder.append(doc.obj());
}
#endif
} tcmallocServerStatusSection;
} // namespace
} // namespace mongo
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