readBatch() — netty Function Reference

Architecture documentation for the readBatch() function in ByteBufAccessBenchmark.java from the netty codebase.

Function java Buffer Telemetry calls 1

Entity Profile

Buffer→ Telemetry→ readBatch() — netty Function Reference

Dependency Diagram

graph TD
  a1442562_fede_9287_f6dc_930b3ab7433b["readBatch()"]
  bbe8e86b_057f_5aa0_71ed_6d8276f6f6f8["ByteBufAccessBenchmark"]
  a1442562_fede_9287_f6dc_930b3ab7433b -->|defined in| bbe8e86b_057f_5aa0_71ed_6d8276f6f6f8
  61df950d_7e92_6b20_f940_a350a421c201["readByte()"]
  a1442562_fede_9287_f6dc_930b3ab7433b -->|calls| 61df950d_7e92_6b20_f940_a350a421c201
  style a1442562_fede_9287_f6dc_930b3ab7433b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

microbench/src/main/java/io/netty/buffer/ByteBufAccessBenchmark.java lines 192–208

    @Benchmark
    public int readBatch() {
        buffer.readerIndex(0);
        int result = 0;
        // WARNING!
        // Please do not replace this sum loop with a BlackHole::consume loop:
        // BlackHole::consume could prevent the JVM to perform certain optimizations
        // forcing ByteBuf::readByte to be executed in order.
        // The purpose of the benchmark is to mimic accesses on ByteBuf
        // as in a real (single-threaded) case ie without (compiler) memory barriers that would
        // disable certain optimizations or would make bounds checks (if enabled)
        // to happen on each access.
        for (int i = 0, size = batchSize; i < size; i++) {
            result += buffer.readByte();
        }
        return result;
    }