testReleasesItsComponents2() — netty Function Reference

Architecture documentation for the testReleasesItsComponents2() function in AbstractCompositeByteBufTest.java from the netty codebase.

Function java Buffer Telemetry

Entity Profile

Buffer→ Telemetry→ testReleasesItsComponents2() — netty Function Reference

Dependency Diagram

graph TD
  74935586_ce53_cf93_1c17_bba7e05680e5["testReleasesItsComponents2()"]
  47bc0a20_e243_89ff_132b_99ac6b23835f["AbstractCompositeByteBufTest"]
  74935586_ce53_cf93_1c17_bba7e05680e5 -->|defined in| 47bc0a20_e243_89ff_132b_99ac6b23835f
  style 74935586_ce53_cf93_1c17_bba7e05680e5 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buffer/src/test/java/io/netty/buffer/AbstractCompositeByteBufTest.java lines 1330–1362

    @Test
    public void testReleasesItsComponents2() {
        // It is important to use a pooled allocator here to ensure
        // the slices returned by readRetainedSlice are of type
        // PooledSlicedByteBuf, which maintains an independent refcount
        // (so that we can be sure to cover this case)
        ByteBuf buffer = PooledByteBufAllocator.DEFAULT.buffer(); // 1

        buffer.writeBytes(new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10});

        // use readRetainedSlice this time - produces different kind of slices
        ByteBuf s1 = buffer.readRetainedSlice(2); // 2
        ByteBuf s2 = s1.readRetainedSlice(2); // 3
        ByteBuf s3 = s2.readRetainedSlice(2); // 4
        ByteBuf s4 = s3.readRetainedSlice(2); // 5

        ByteBuf composite = newCompositeBuffer()
            .addComponent(s1)
            .addComponents(s2, s3, s4)
            .order(ByteOrder.LITTLE_ENDIAN);

        assertEquals(1, composite.refCnt());
        assertEquals(2, buffer.refCnt());

        // releasing composite should release the 4 components
        composite.release();
        assertEquals(0, composite.refCnt());
        assertEquals(1, buffer.refCnt());

        // last remaining ref to buffer
        buffer.release();
        assertEquals(0, buffer.refCnt());
    }