checkDeadLock() — netty Function Reference

Architecture documentation for the checkDeadLock() function in SslHandler.java from the netty codebase.

Function java Buffer Allocators calls 2

Entity Profile

Buffer→ Allocators→ checkDeadLock() — netty Function Reference

Dependency Diagram

graph TD
  929123a6_cbbf_2997_c536_7103f0009ac0["checkDeadLock()"]
  f0ccbe5b_17b6_f018_45e5_3edfebdb17fc["LazyChannelPromise"]
  929123a6_cbbf_2997_c536_7103f0009ac0 -->|defined in| f0ccbe5b_17b6_f018_45e5_3edfebdb17fc
  5f4e8183_7108_ca0e_bcdf_b597e4832141["handlerAdded()"]
  929123a6_cbbf_2997_c536_7103f0009ac0 -->|calls| 5f4e8183_7108_ca0e_bcdf_b597e4832141
  5a68c4b0_fb46_b53f_0fc3_ad6630bae0d7["handshakeFuture()"]
  929123a6_cbbf_2997_c536_7103f0009ac0 -->|calls| 5a68c4b0_fb46_b53f_0fc3_ad6630bae0d7
  style 929123a6_cbbf_2997_c536_7103f0009ac0 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

handler/src/main/java/io/netty/handler/ssl/SslHandler.java lines 2461–2473

        @Override
        protected void checkDeadLock() {
            if (ctx == null) {
                // If ctx is null the handlerAdded(...) callback was not called, in this case the checkDeadLock()
                // method was called from another Thread then the one that is used by ctx.executor(). We need to
                // guard against this as a user can see a race if handshakeFuture().sync() is called but the
                // handlerAdded(..) method was not yet as it is called from the EventExecutor of the
                // ChannelHandlerContext. If we not guard against this super.checkDeadLock() would cause an
                // IllegalStateException when trying to call executor().
                return;
            }
            super.checkDeadLock();
        }