unrolledFirstIndexOf() — netty Function Reference

Architecture documentation for the unrolledFirstIndexOf() function in ByteBufUtil.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Buffer→ Allocators→ unrolledFirstIndexOf() — netty Function Reference

Dependency Diagram

graph TD
  d655b9ad_9dec_3bdf_40e3_78e349063353["unrolledFirstIndexOf()"]
  920454f6_25f6_4a9b_3d32_9684c3e11f6c["ByteBufUtil"]
  d655b9ad_9dec_3bdf_40e3_78e349063353 -->|defined in| 920454f6_25f6_4a9b_3d32_9684c3e11f6c
  e875d748_c115_bc76_dba9_df211beb4775["firstIndexOf()"]
  e875d748_c115_bc76_dba9_df211beb4775 -->|calls| d655b9ad_9dec_3bdf_40e3_78e349063353
  style d655b9ad_9dec_3bdf_40e3_78e349063353 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buffer/src/main/java/io/netty/buffer/ByteBufUtil.java lines 524–566

    private static int unrolledFirstIndexOf(AbstractByteBuf buffer, int fromIndex, int byteCount, byte value) {
        assert byteCount > 0 && byteCount < 8;
        if (buffer._getByte(fromIndex) == value) {
            return fromIndex;
        }
        if (byteCount == 1) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 1) == value) {
            return fromIndex + 1;
        }
        if (byteCount == 2) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 2) == value) {
            return fromIndex + 2;
        }
        if (byteCount == 3) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 3) == value) {
            return fromIndex + 3;
        }
        if (byteCount == 4) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 4) == value) {
            return fromIndex + 4;
        }
        if (byteCount == 5) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 5) == value) {
            return fromIndex + 5;
        }
        if (byteCount == 6) {
            return -1;
        }
        if (buffer._getByte(fromIndex + 6) == value) {
            return fromIndex + 6;
        }
        return -1;
    }