runShutdownHooks() — netty Function Reference

Architecture documentation for the runShutdownHooks() function in SingleThreadEventExecutor.java from the netty codebase.

Function java CommonUtil Concurrent called by 1

Entity Profile

CommonUtil→ Concurrent→ runShutdownHooks() — netty Function Reference

Dependency Diagram

graph TD
  da6e6a19_86d9_7143_e21b_0738d8d5c250["runShutdownHooks()"]
  c9189467_acbc_07ea_3a8c_fecfe22ec122["SingleThreadEventExecutor"]
  da6e6a19_86d9_7143_e21b_0738d8d5c250 -->|defined in| c9189467_acbc_07ea_3a8c_fecfe22ec122
  2fbe8756_76da_a86e_960c_bf11273a6375["confirmShutdown()"]
  2fbe8756_76da_a86e_960c_bf11273a6375 -->|calls| da6e6a19_86d9_7143_e21b_0738d8d5c250
  style da6e6a19_86d9_7143_e21b_0738d8d5c250 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

common/src/main/java/io/netty/util/concurrent/SingleThreadEventExecutor.java lines 749–771

    private boolean runShutdownHooks() {
        boolean ran = false;
        // Note shutdown hooks can add / remove shutdown hooks.
        while (!shutdownHooks.isEmpty()) {
            List<Runnable> copy = new ArrayList<Runnable>(shutdownHooks);
            shutdownHooks.clear();
            for (Runnable task: copy) {
                try {
                    runTask(task);
                } catch (Throwable t) {
                    logger.warn("Shutdown hook raised an exception.", t);
                } finally {
                    ran = true;
                }
            }
        }

        if (ran) {
            lastExecutionTime = getCurrentTimeNanos();
        }

        return ran;
    }