testFreePoolChunk() — netty Function Reference

Architecture documentation for the testFreePoolChunk() function in PooledByteBufAllocatorTest.java from the netty codebase.

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Buffer→ Search→ testFreePoolChunk() — netty Function Reference

Dependency Diagram

graph TD
  44d2f558_4bed_b86f_a757_b81656650cf1["testFreePoolChunk()"]
  f8855572_2abf_1bf6_a32b_5cf6d1cf4947["PooledByteBufAllocatorTest"]
  44d2f558_4bed_b86f_a757_b81656650cf1 -->|defined in| f8855572_2abf_1bf6_a32b_5cf6d1cf4947
  4e681469_9c14_67cb_5890_46b5d4b12dd2["PooledByteBufAllocator()"]
  44d2f558_4bed_b86f_a757_b81656650cf1 -->|calls| 4e681469_9c14_67cb_5890_46b5d4b12dd2
  style 44d2f558_4bed_b86f_a757_b81656650cf1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

buffer/src/test/java/io/netty/buffer/PooledByteBufAllocatorTest.java lines 255–282

    @Test
    public void testFreePoolChunk() {
        int chunkSize = 16 * 1024 * 1024;
        PooledByteBufAllocator allocator = new PooledByteBufAllocator(true, 1, 0, 8192, 11, 0, 0, 0);
        ByteBuf buffer = allocator.heapBuffer(chunkSize);
        List<PoolArenaMetric> arenas = allocator.metric().heapArenas();
        assertEquals(1, arenas.size());
        List<PoolChunkListMetric> lists = arenas.get(0).chunkLists();
        assertEquals(6, lists.size());

        assertFalse(lists.get(0).iterator().hasNext());
        assertFalse(lists.get(1).iterator().hasNext());
        assertFalse(lists.get(2).iterator().hasNext());
        assertFalse(lists.get(3).iterator().hasNext());
        assertFalse(lists.get(4).iterator().hasNext());

        // Must end up in the 6th PoolChunkList
        assertTrue(lists.get(5).iterator().hasNext());
        assertTrue(buffer.release());

        // Should be completely removed and so all PoolChunkLists must be empty
        assertFalse(lists.get(0).iterator().hasNext());
        assertFalse(lists.get(1).iterator().hasNext());
        assertFalse(lists.get(2).iterator().hasNext());
        assertFalse(lists.get(3).iterator().hasNext());
        assertFalse(lists.get(4).iterator().hasNext());
        assertFalse(lists.get(5).iterator().hasNext());
    }