rocksdb/db/malloc_stats.cc
Sagar Vemuri 72502cf227 Revert "comment out unused parameters"
Summary:
This reverts the previous commit 1d7048c598, which broke the build.

Did a `git revert 1d7048c`.
Closes https://github.com/facebook/rocksdb/pull/2627

Differential Revision: D5476473

Pulled By: sagar0

fbshipit-source-id: 4756ff5c0dfc88c17eceb00e02c36176de728d06
2017-07-21 18:26:26 -07:00

53 lines
1.5 KiB
C++

// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "db/malloc_stats.h"
#ifndef ROCKSDB_LITE
#include <memory>
#include <string.h>
namespace rocksdb {
#ifdef ROCKSDB_JEMALLOC
#include "jemalloc/jemalloc.h"
typedef struct {
char* cur;
char* end;
} MallocStatus;
static void GetJemallocStatus(void* mstat_arg, const char* status) {
MallocStatus* mstat = reinterpret_cast<MallocStatus*>(mstat_arg);
size_t status_len = status ? strlen(status) : 0;
size_t buf_size = (size_t)(mstat->end - mstat->cur);
if (!status_len || status_len > buf_size) {
return;
}
snprintf(mstat->cur, buf_size, "%s", status);
mstat->cur += status_len;
}
#endif // ROCKSDB_JEMALLOC
void DumpMallocStats(std::string* stats) {
#ifdef ROCKSDB_JEMALLOC
MallocStatus mstat;
const unsigned int kMallocStatusLen = 1000000;
std::unique_ptr<char[]> buf{new char[kMallocStatusLen + 1]};
mstat.cur = buf.get();
mstat.end = buf.get() + kMallocStatusLen;
je_malloc_stats_print(GetJemallocStatus, &mstat, "");
stats->append(buf.get());
#endif // ROCKSDB_JEMALLOC
}
}
#endif // !ROCKSDB_LITE