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Use a new approach to completely avoid memory leaks

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Andrea Cavalli 2021-08-16 10:27:47 +02:00
parent 9d326f5a8b
commit 435e7d4886
2 changed files with 983 additions and 1099 deletions
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48
src/main/java/it/cavallium/dbengine/database/LLDictionary.java
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@ -23,17 +23,17 @@ public interface LLDictionary extends LLKeyValueDatabaseStructure {
ByteBufAllocator getAllocator(); ByteBufAllocator getAllocator();
Mono<ByteBuf> get(@Nullable LLSnapshot snapshot, ByteBuf key, boolean existsAlmostCertainly); Mono<ByteBuf> get(@Nullable LLSnapshot snapshot, Mono<ByteBuf> key, boolean existsAlmostCertainly);
default Mono<ByteBuf> get(@Nullable LLSnapshot snapshot, ByteBuf key) { default Mono<ByteBuf> get(@Nullable LLSnapshot snapshot, Mono<ByteBuf> key) {
return get(snapshot, key, false); return get(snapshot, key, false);
} }
Mono<ByteBuf> put(ByteBuf key, ByteBuf value, LLDictionaryResultType resultType); Mono<ByteBuf> put(Mono<ByteBuf> key, Mono<ByteBuf> value, LLDictionaryResultType resultType);
Mono<UpdateMode> getUpdateMode(); Mono<UpdateMode> getUpdateMode();
default Mono<ByteBuf> update(ByteBuf key, default Mono<ByteBuf> update(Mono<ByteBuf> key,
Function<@Nullable ByteBuf, @Nullable ByteBuf> updater, Function<@Nullable ByteBuf, @Nullable ByteBuf> updater,
UpdateReturnMode updateReturnMode, UpdateReturnMode updateReturnMode,
boolean existsAlmostCertainly) { boolean existsAlmostCertainly) {
@ -42,24 +42,24 @@ public interface LLDictionary extends LLKeyValueDatabaseStructure {
.transform(prev -> LLUtils.resolveDelta(prev, updateReturnMode)); .transform(prev -> LLUtils.resolveDelta(prev, updateReturnMode));
} }
default Mono<ByteBuf> update(ByteBuf key, default Mono<ByteBuf> update(Mono<ByteBuf> key,
Function<@Nullable ByteBuf, @Nullable ByteBuf> updater, Function<@Nullable ByteBuf, @Nullable ByteBuf> updater,
UpdateReturnMode returnMode) { UpdateReturnMode returnMode) {
return update(key, updater, returnMode, false); return update(key, updater, returnMode, false);
} }
Mono<Delta<ByteBuf>> updateAndGetDelta(ByteBuf key, Mono<Delta<ByteBuf>> updateAndGetDelta(Mono<ByteBuf> key,
Function<@Nullable ByteBuf, @Nullable ByteBuf> updater, Function<@Nullable ByteBuf, @Nullable ByteBuf> updater,
boolean existsAlmostCertainly); boolean existsAlmostCertainly);
default Mono<Delta<ByteBuf>> updateAndGetDelta(ByteBuf key, default Mono<Delta<ByteBuf>> updateAndGetDelta(Mono<ByteBuf> key,
Function<@Nullable ByteBuf, @Nullable ByteBuf> updater) { Function<@Nullable ByteBuf, @Nullable ByteBuf> updater) {
return updateAndGetDelta(key, updater, false); return updateAndGetDelta(key, updater, false);
} }
Mono<Void> clear(); Mono<Void> clear();
Mono<ByteBuf> remove(ByteBuf key, LLDictionaryResultType resultType); Mono<ByteBuf> remove(Mono<ByteBuf> key, LLDictionaryResultType resultType);
<K> Flux<Tuple3<K, ByteBuf, Optional<ByteBuf>>> getMulti(@Nullable LLSnapshot snapshot, <K> Flux<Tuple3<K, ByteBuf, Optional<ByteBuf>>> getMulti(@Nullable LLSnapshot snapshot,
Flux<Tuple2<K, ByteBuf>> keys, Flux<Tuple2<K, ByteBuf>> keys,
@ -74,34 +74,34 @@ public interface LLDictionary extends LLKeyValueDatabaseStructure {
<X> Flux<ExtraKeyOperationResult<ByteBuf, X>> updateMulti(Flux<Tuple2<ByteBuf, X>> entries, <X> Flux<ExtraKeyOperationResult<ByteBuf, X>> updateMulti(Flux<Tuple2<ByteBuf, X>> entries,
BiFunction<ByteBuf, X, ByteBuf> updateFunction); BiFunction<ByteBuf, X, ByteBuf> updateFunction);
Flux<Entry<ByteBuf, ByteBuf>> getRange(@Nullable LLSnapshot snapshot, LLRange range, boolean existsAlmostCertainly); Flux<Entry<ByteBuf, ByteBuf>> getRange(@Nullable LLSnapshot snapshot, Mono<LLRange> range, boolean existsAlmostCertainly);
default Flux<Entry<ByteBuf, ByteBuf>> getRange(@Nullable LLSnapshot snapshot, LLRange range) { default Flux<Entry<ByteBuf, ByteBuf>> getRange(@Nullable LLSnapshot snapshot, Mono<LLRange> range) {
return getRange(snapshot, range, false); return getRange(snapshot, range, false);
} }
Flux<List<Entry<ByteBuf, ByteBuf>>> getRangeGrouped(@Nullable LLSnapshot snapshot, Flux<List<Entry<ByteBuf, ByteBuf>>> getRangeGrouped(@Nullable LLSnapshot snapshot,
LLRange range, Mono<LLRange> range,
int prefixLength, int prefixLength,
boolean existsAlmostCertainly); boolean existsAlmostCertainly);
default Flux<List<Entry<ByteBuf, ByteBuf>>> getRangeGrouped(@Nullable LLSnapshot snapshot, default Flux<List<Entry<ByteBuf, ByteBuf>>> getRangeGrouped(@Nullable LLSnapshot snapshot,
LLRange range, Mono<LLRange> range,
int prefixLength) { int prefixLength) {
return getRangeGrouped(snapshot, range, prefixLength, false); return getRangeGrouped(snapshot, range, prefixLength, false);
} }
Flux<ByteBuf> getRangeKeys(@Nullable LLSnapshot snapshot, LLRange range); Flux<ByteBuf> getRangeKeys(@Nullable LLSnapshot snapshot, Mono<LLRange> range);
Flux<List<ByteBuf>> getRangeKeysGrouped(@Nullable LLSnapshot snapshot, LLRange range, int prefixLength); Flux<List<ByteBuf>> getRangeKeysGrouped(@Nullable LLSnapshot snapshot, Mono<LLRange> range, int prefixLength);
Flux<ByteBuf> getRangeKeyPrefixes(@Nullable LLSnapshot snapshot, LLRange range, int prefixLength); Flux<ByteBuf> getRangeKeyPrefixes(@Nullable LLSnapshot snapshot, Mono<LLRange> range, int prefixLength);
Flux<BadBlock> badBlocks(LLRange range); Flux<BadBlock> badBlocks(Mono<LLRange> range);
Mono<Void> setRange(LLRange range, Flux<Entry<ByteBuf, ByteBuf>> entries); Mono<Void> setRange(Mono<LLRange> range, Flux<Entry<ByteBuf, ByteBuf>> entries);
default Mono<Void> replaceRange(LLRange range, default Mono<Void> replaceRange(Mono<LLRange> range,
boolean canKeysChange, boolean canKeysChange,
Function<Entry<ByteBuf, ByteBuf>, Mono<Entry<ByteBuf, ByteBuf>>> entriesReplacer, Function<Entry<ByteBuf, ByteBuf>, Mono<Entry<ByteBuf, ByteBuf>>> entriesReplacer,
boolean existsAlmostCertainly) { boolean existsAlmostCertainly) {
@ -122,19 +122,19 @@ public interface LLDictionary extends LLKeyValueDatabaseStructure {
}); });
} }
default Mono<Void> replaceRange(LLRange range, default Mono<Void> replaceRange(Mono<LLRange> range,
boolean canKeysChange, boolean canKeysChange,
Function<Entry<ByteBuf, ByteBuf>, Mono<Entry<ByteBuf, ByteBuf>>> entriesReplacer) { Function<Entry<ByteBuf, ByteBuf>, Mono<Entry<ByteBuf, ByteBuf>>> entriesReplacer) {
return replaceRange(range, canKeysChange, entriesReplacer, false); return replaceRange(range, canKeysChange, entriesReplacer, false);
} }
Mono<Boolean> isRangeEmpty(@Nullable LLSnapshot snapshot, LLRange range); Mono<Boolean> isRangeEmpty(@Nullable LLSnapshot snapshot, Mono<LLRange> range);
Mono<Long> sizeRange(@Nullable LLSnapshot snapshot, LLRange range, boolean fast); Mono<Long> sizeRange(@Nullable LLSnapshot snapshot, Mono<LLRange> range, boolean fast);
Mono<Entry<ByteBuf, ByteBuf>> getOne(@Nullable LLSnapshot snapshot, LLRange range); Mono<Entry<ByteBuf, ByteBuf>> getOne(@Nullable LLSnapshot snapshot, Mono<LLRange> range);
Mono<ByteBuf> getOneKey(@Nullable LLSnapshot snapshot, LLRange range); Mono<ByteBuf> getOneKey(@Nullable LLSnapshot snapshot, Mono<LLRange> range);
Mono<Entry<ByteBuf, ByteBuf>> removeOne(LLRange range); Mono<Entry<ByteBuf, ByteBuf>> removeOne(Mono<LLRange> range);
} }

2034
src/main/java/it/cavallium/dbengine/database/disk/LLLocalDictionary.java
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