7d613bfe2c
This works by setting the SOONG_UI_DELVE= environment variable to the port on which soong_ui should accept a Delve connection on. This is achieved by reusing the Delve execution logic between soong_ui and soong_build. Test: Manual. Change-Id: Id2c1d4b6faac1a4a3918c91030ce2239f7daf54f
69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package shared
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import (
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"fmt"
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"os"
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"os/exec"
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"strings"
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"syscall"
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)
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var (
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isDebugging bool
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)
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// Finds the Delve binary to use. Either uses the SOONG_DELVE_PATH environment
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// variable or if that is unset, looks at $PATH.
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func ResolveDelveBinary() string {
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result := os.Getenv("SOONG_DELVE_PATH")
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if result == "" {
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result, _ = exec.LookPath("dlv")
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}
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return result
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}
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// Returns whether the current process is running under Delve due to
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// ReexecWithDelveMaybe().
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func IsDebugging() bool {
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return isDebugging
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}
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// Re-executes the binary in question under the control of Delve when
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// delveListen is not the empty string. delvePath gives the path to the Delve.
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func ReexecWithDelveMaybe(delveListen, delvePath string) {
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isDebugging = os.Getenv("SOONG_DELVE_REEXECUTED") == "true"
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if isDebugging || delveListen == "" {
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return
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}
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if delvePath == "" {
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fmt.Fprintln(os.Stderr, "Delve debugging requested but failed to find dlv")
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os.Exit(1)
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}
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soongDelveEnv := []string{}
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for _, env := range os.Environ() {
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idx := strings.IndexRune(env, '=')
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if idx != -1 {
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soongDelveEnv = append(soongDelveEnv, env)
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}
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}
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soongDelveEnv = append(soongDelveEnv, "SOONG_DELVE_REEXECUTED=true")
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dlvArgv := []string{
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delvePath,
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"--listen=:" + delveListen,
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"--headless=true",
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"--api-version=2",
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"exec",
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os.Args[0],
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"--",
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}
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dlvArgv = append(dlvArgv, os.Args[1:]...)
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syscall.Exec(delvePath, dlvArgv, soongDelveEnv)
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fmt.Fprintln(os.Stderr, "exec() failed while trying to reexec with Delve")
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os.Exit(1)
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}
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