odboy
f62c1f4872
- 自动识别 JDK 8/11/17/21 与宿主机 CPU、可用内存；容器内以 cgroup 限额为准；堆默认取可用内存 50%，-Xms 与 -Xmx 同值 - 按版本分支生成参数：JDK 8 用 -Xloggc 一组，JDK 9+ 用 -Xlog:； 堆超过 30g 时自动省略压缩指针参数 - 支持 --jdk/--java/--heap/--xms/--env/--gc-log/--heap-dump-on-oom/ --print-flags/--dry-run；jar 之后的参数原样交给应用 - 前台运行：stdio 直连、退出码透传、SIGINT/SIGTERM 转发给 JVM - BuiltinRequest 增加 Stdin，使内置命令可以读取调用方输入 - 修正帮助中的用法行重复（自定义 Usage 不再追加通用透传尾巴） - 文档：新增 README.java.md，主 README 补充导航与示例
41 lines
857 B
Go
41 lines
857 B
Go
//go:build !windows
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package executor
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import (
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"os"
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"os/exec"
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"os/signal"
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"syscall"
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)
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// forwardSignals relays interrupts to the JVM so its shutdown hooks run
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// instead of the process being torn down abruptly.
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//
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// The JVM shares kopsc's process group, so a terminal Ctrl+C already reaches
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// it; this relay also covers the case where a supervisor signals kopsc alone.
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// The returned stop function must be called once the child has been waited for.
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func forwardSignals(cmd *exec.Cmd) (stop func()) {
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signals := make(chan os.Signal, 1)
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signal.Notify(signals, os.Interrupt, syscall.SIGTERM)
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done := make(chan struct{})
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go func() {
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for {
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select {
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case sig := <-signals:
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if cmd.Process != nil {
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_ = cmd.Process.Signal(sig)
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}
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case <-done:
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return
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}
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}
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}()
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return func() {
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signal.Stop(signals)
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close(done)
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}
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}
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