diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/java/rocksjni/memory_util.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/java/rocksjni/memory_util.cc | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/rocksdb/java/rocksjni/memory_util.cc b/src/rocksdb/java/rocksjni/memory_util.cc new file mode 100644 index 000000000..c87c4f403 --- /dev/null +++ b/src/rocksdb/java/rocksjni/memory_util.cc @@ -0,0 +1,100 @@ +// 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). + +#include "rocksdb/utilities/memory_util.h" + +#include <jni.h> + +#include <map> +#include <string> +#include <unordered_set> +#include <vector> + +#include "include/org_rocksdb_MemoryUtil.h" +#include "rocksjni/portal.h" + +/* + * Class: org_rocksdb_MemoryUtil + * Method: getApproximateMemoryUsageByType + * Signature: ([J[J)Ljava/util/Map; + */ +jobject Java_org_rocksdb_MemoryUtil_getApproximateMemoryUsageByType( + JNIEnv *env, jclass, jlongArray jdb_handles, jlongArray jcache_handles) { + jboolean has_exception = JNI_FALSE; + std::vector<ROCKSDB_NAMESPACE::DB *> dbs = + ROCKSDB_NAMESPACE::JniUtil::fromJPointers<ROCKSDB_NAMESPACE::DB>( + env, jdb_handles, &has_exception); + if (has_exception == JNI_TRUE) { + // exception thrown: OutOfMemoryError + return nullptr; + } + + std::unordered_set<const ROCKSDB_NAMESPACE::Cache *> cache_set; + jsize cache_handle_count = env->GetArrayLength(jcache_handles); + if (cache_handle_count > 0) { + jlong *ptr_jcache_handles = + env->GetLongArrayElements(jcache_handles, nullptr); + if (ptr_jcache_handles == nullptr) { + // exception thrown: OutOfMemoryError + return nullptr; + } + for (jsize i = 0; i < cache_handle_count; i++) { + auto *cache_ptr = + reinterpret_cast<std::shared_ptr<ROCKSDB_NAMESPACE::Cache> *>( + ptr_jcache_handles[i]); + cache_set.insert(cache_ptr->get()); + } + env->ReleaseLongArrayElements(jcache_handles, ptr_jcache_handles, + JNI_ABORT); + } + + std::map<ROCKSDB_NAMESPACE::MemoryUtil::UsageType, uint64_t> usage_by_type; + if (ROCKSDB_NAMESPACE::MemoryUtil::GetApproximateMemoryUsageByType( + dbs, cache_set, &usage_by_type) != ROCKSDB_NAMESPACE::Status::OK()) { + // Non-OK status + return nullptr; + } + + jobject jusage_by_type = ROCKSDB_NAMESPACE::HashMapJni::construct( + env, static_cast<uint32_t>(usage_by_type.size())); + if (jusage_by_type == nullptr) { + // exception occurred + return nullptr; + } + const ROCKSDB_NAMESPACE::HashMapJni::FnMapKV< + const ROCKSDB_NAMESPACE::MemoryUtil::UsageType, const uint64_t, jobject, + jobject> + fn_map_kv = [env]( + const std::pair<ROCKSDB_NAMESPACE::MemoryUtil::UsageType, + uint64_t> &pair) { + // Construct key + const jobject jusage_type = ROCKSDB_NAMESPACE::ByteJni::valueOf( + env, ROCKSDB_NAMESPACE::MemoryUsageTypeJni::toJavaMemoryUsageType( + pair.first)); + if (jusage_type == nullptr) { + // an error occurred + return std::unique_ptr<std::pair<jobject, jobject>>(nullptr); + } + // Construct value + const jobject jusage_value = + ROCKSDB_NAMESPACE::LongJni::valueOf(env, pair.second); + if (jusage_value == nullptr) { + // an error occurred + return std::unique_ptr<std::pair<jobject, jobject>>(nullptr); + } + // Construct and return pointer to pair of jobjects + return std::unique_ptr<std::pair<jobject, jobject>>( + new std::pair<jobject, jobject>(jusage_type, jusage_value)); + }; + + if (!ROCKSDB_NAMESPACE::HashMapJni::putAll(env, jusage_by_type, + usage_by_type.begin(), + usage_by_type.end(), fn_map_kv)) { + // exception occcurred + jusage_by_type = nullptr; + } + + return jusage_by_type; +} |