testReferenceCounts2() — netty Function Reference

Architecture documentation for the testReferenceCounts2() function in AbstractCompositeByteBufTest.java from the netty codebase.

Function java Buffer Telemetry

Entity Profile

Buffer→ Telemetry→ testReferenceCounts2() — netty Function Reference

Dependency Diagram

graph TD
  f90a5e5b_ed24_64b3_61c7_905b2c8dead2["testReferenceCounts2()"]
  47bc0a20_e243_89ff_132b_99ac6b23835f["AbstractCompositeByteBufTest"]
  f90a5e5b_ed24_64b3_61c7_905b2c8dead2 -->|defined in| 47bc0a20_e243_89ff_132b_99ac6b23835f
  style f90a5e5b_ed24_64b3_61c7_905b2c8dead2 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buffer/src/test/java/io/netty/buffer/AbstractCompositeByteBufTest.java lines 687–721

    @Test
    public void testReferenceCounts2() {
        ByteBuf c1 = buffer().writeByte(1);
        ByteBuf c2 = buffer().writeByte(2).retain();
        ByteBuf c3 = buffer().writeByte(3).retain(2);

        CompositeByteBuf bufA = compositeBuffer();
        bufA.addComponents(c1, c2, c3).writerIndex(3);

        CompositeByteBuf bufB = compositeBuffer();
        bufB.addComponents(bufA);

        // Ensure that bufA.refCnt() did not change.
        assertEquals(1, bufA.refCnt());

        // Ensure that c[123]'s refCnt did not change.
        assertEquals(1, c1.refCnt());
        assertEquals(2, c2.refCnt());
        assertEquals(3, c3.refCnt());

        // This should decrease bufA.refCnt().
        bufB.release();
        assertEquals(0, bufB.refCnt());

        // Ensure bufA.refCnt() changed.
        assertEquals(0, bufA.refCnt());

        // Ensure that c[123]'s refCnt also changed due to the deallocation of bufA.
        assertEquals(0, c1.refCnt());
        assertEquals(1, c2.refCnt());
        assertEquals(2, c3.refCnt());

        c3.release(2);
        c2.release();
    }