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author | 2024-09-16 11:06:00 +0200 | |
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committer | 2024-09-16 09:06:00 +0000 | |
commit | b2572b9e074ebbce8bcf1b9979d4d8ea066650d6 (patch) | |
tree | 0c2a08ed63b582676ce7661252a6917db751c62a /vendor/google.golang.org/grpc/shared_buffer_pool.go | |
parent | [chore]: Bump golang.org/x/net from 0.28.0 to 0.29.0 (#3303) (diff) | |
download | gotosocial-b2572b9e074ebbce8bcf1b9979d4d8ea066650d6.tar.xz |
[chore] Bump otel deps -> v1.30.0/v0.52.0 (#3307)
Diffstat (limited to 'vendor/google.golang.org/grpc/shared_buffer_pool.go')
-rw-r--r-- | vendor/google.golang.org/grpc/shared_buffer_pool.go | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/vendor/google.golang.org/grpc/shared_buffer_pool.go b/vendor/google.golang.org/grpc/shared_buffer_pool.go deleted file mode 100644 index 48a64cfe8..000000000 --- a/vendor/google.golang.org/grpc/shared_buffer_pool.go +++ /dev/null @@ -1,154 +0,0 @@ -/* - * - * Copyright 2023 gRPC authors. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -package grpc - -import "sync" - -// SharedBufferPool is a pool of buffers that can be shared, resulting in -// decreased memory allocation. Currently, in gRPC-go, it is only utilized -// for parsing incoming messages. -// -// # Experimental -// -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. -type SharedBufferPool interface { - // Get returns a buffer with specified length from the pool. - // - // The returned byte slice may be not zero initialized. - Get(length int) []byte - - // Put returns a buffer to the pool. - Put(*[]byte) -} - -// NewSharedBufferPool creates a simple SharedBufferPool with buckets -// of different sizes to optimize memory usage. This prevents the pool from -// wasting large amounts of memory, even when handling messages of varying sizes. -// -// # Experimental -// -// Notice: This API is EXPERIMENTAL and may be changed or removed in a -// later release. -func NewSharedBufferPool() SharedBufferPool { - return &simpleSharedBufferPool{ - pools: [poolArraySize]simpleSharedBufferChildPool{ - newBytesPool(level0PoolMaxSize), - newBytesPool(level1PoolMaxSize), - newBytesPool(level2PoolMaxSize), - newBytesPool(level3PoolMaxSize), - newBytesPool(level4PoolMaxSize), - newBytesPool(0), - }, - } -} - -// simpleSharedBufferPool is a simple implementation of SharedBufferPool. -type simpleSharedBufferPool struct { - pools [poolArraySize]simpleSharedBufferChildPool -} - -func (p *simpleSharedBufferPool) Get(size int) []byte { - return p.pools[p.poolIdx(size)].Get(size) -} - -func (p *simpleSharedBufferPool) Put(bs *[]byte) { - p.pools[p.poolIdx(cap(*bs))].Put(bs) -} - -func (p *simpleSharedBufferPool) poolIdx(size int) int { - switch { - case size <= level0PoolMaxSize: - return level0PoolIdx - case size <= level1PoolMaxSize: - return level1PoolIdx - case size <= level2PoolMaxSize: - return level2PoolIdx - case size <= level3PoolMaxSize: - return level3PoolIdx - case size <= level4PoolMaxSize: - return level4PoolIdx - default: - return levelMaxPoolIdx - } -} - -const ( - level0PoolMaxSize = 16 // 16 B - level1PoolMaxSize = level0PoolMaxSize * 16 // 256 B - level2PoolMaxSize = level1PoolMaxSize * 16 // 4 KB - level3PoolMaxSize = level2PoolMaxSize * 16 // 64 KB - level4PoolMaxSize = level3PoolMaxSize * 16 // 1 MB -) - -const ( - level0PoolIdx = iota - level1PoolIdx - level2PoolIdx - level3PoolIdx - level4PoolIdx - levelMaxPoolIdx - poolArraySize -) - -type simpleSharedBufferChildPool interface { - Get(size int) []byte - Put(any) -} - -type bufferPool struct { - sync.Pool - - defaultSize int -} - -func (p *bufferPool) Get(size int) []byte { - bs := p.Pool.Get().(*[]byte) - - if cap(*bs) < size { - p.Pool.Put(bs) - - return make([]byte, size) - } - - return (*bs)[:size] -} - -func newBytesPool(size int) simpleSharedBufferChildPool { - return &bufferPool{ - Pool: sync.Pool{ - New: func() any { - bs := make([]byte, size) - return &bs - }, - }, - defaultSize: size, - } -} - -// nopBufferPool is a buffer pool just makes new buffer without pooling. -type nopBufferPool struct { -} - -func (nopBufferPool) Get(length int) []byte { - return make([]byte, length) -} - -func (nopBufferPool) Put(*[]byte) { -} |