selectNow() — netty Function Reference

Architecture documentation for the selectNow() function in NioIoHandler.java from the netty codebase.

Function java Buffer Telemetry calls 1 called by 4

Entity Profile

Buffer→ Telemetry→ selectNow() — netty Function Reference

Dependency Diagram

graph TD
  5c2d7172_e563_2902_636d_504657d6c8d2["selectNow()"]
  db526e28_8aae_a182_b56b_dc12824d89f5["NioIoHandler"]
  5c2d7172_e563_2902_636d_504657d6c8d2 -->|defined in| db526e28_8aae_a182_b56b_dc12824d89f5
  60fdcec8_2616_1645_9189_9d99251306f1["IoRegistration()"]
  60fdcec8_2616_1645_9189_9d99251306f1 -->|calls| 5c2d7172_e563_2902_636d_504657d6c8d2
  b18c5ab3_f5bb_81ad_70bd_20524d394f59["select()"]
  b18c5ab3_f5bb_81ad_70bd_20524d394f59 -->|calls| 5c2d7172_e563_2902_636d_504657d6c8d2
  91e9bee4_1b62_e088_9fb3_4b12427baefc["Selector()"]
  91e9bee4_1b62_e088_9fb3_4b12427baefc -->|calls| 5c2d7172_e563_2902_636d_504657d6c8d2
  0da770a6_c2c1_ab83_acae_aaaf42049c37["selectAgain()"]
  0da770a6_c2c1_ab83_acae_aaaf42049c37 -->|calls| 5c2d7172_e563_2902_636d_504657d6c8d2
  b23ac8e4_5eac_4595_0470_59e0db8713ff["wakeup()"]
  5c2d7172_e563_2902_636d_504657d6c8d2 -->|calls| b23ac8e4_5eac_4595_0470_59e0db8713ff
  style 5c2d7172_e563_2902_636d_504657d6c8d2 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

transport/src/main/java/io/netty/channel/nio/NioIoHandler.java lines 736–745

    int selectNow() throws IOException {
        try {
            return selector.selectNow();
        } finally {
            // restore wakeup state if needed
            if (wakenUp.get()) {
                selector.wakeup();
            }
        }
    }