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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/db/malloc_stats.cc | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/db/malloc_stats.cc | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/rocksdb/db/malloc_stats.cc b/src/rocksdb/db/malloc_stats.cc new file mode 100644 index 000000000..52f2e6e0f --- /dev/null +++ b/src/rocksdb/db/malloc_stats.cc @@ -0,0 +1,55 @@ +// 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 <string.h> + +#include <memory> + +#include "port/jemalloc_helper.h" + +namespace ROCKSDB_NAMESPACE { + +#ifdef ROCKSDB_JEMALLOC + +struct MallocStatus { + char* cur; + char* end; +}; + +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; +} +void DumpMallocStats(std::string* stats) { + if (!HasJemalloc()) { + return; + } + 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; + malloc_stats_print(GetJemallocStatus, &mstat, ""); + stats->append(buf.get()); +} +#else +void DumpMallocStats(std::string*) {} +#endif // ROCKSDB_JEMALLOC +} // namespace ROCKSDB_NAMESPACE +#endif // !ROCKSDB_LITE |