| // Copyright 2015 Google Inc. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package main |
| |
| import ( |
| "flag" |
| "fmt" |
| "os" |
| "os/exec" |
| "path/filepath" |
| "strconv" |
| "strings" |
| "syscall" |
| "time" |
| |
| "github.com/google/blueprint/bootstrap" |
| |
| "android/soong/android" |
| ) |
| |
| var ( |
| docFile string |
| ) |
| |
| func init() { |
| flag.StringVar(&docFile, "soong_docs", "", "build documentation file to output") |
| } |
| |
| func newNameResolver(config android.Config) *android.NameResolver { |
| namespacePathsToExport := make(map[string]bool) |
| |
| for _, namespaceName := range config.ExportedNamespaces() { |
| namespacePathsToExport[namespaceName] = true |
| } |
| |
| namespacePathsToExport["."] = true // always export the root namespace |
| |
| exportFilter := func(namespace *android.Namespace) bool { |
| return namespacePathsToExport[namespace.Path] |
| } |
| |
| return android.NewNameResolver(exportFilter) |
| } |
| |
| func main() { |
| if android.SoongDelveListen != "" { |
| if android.SoongDelvePath == "" { |
| fmt.Fprintln(os.Stderr, "SOONG_DELVE is set but failed to find dlv") |
| os.Exit(1) |
| } |
| pid := strconv.Itoa(os.Getpid()) |
| cmd := []string{android.SoongDelvePath, |
| "attach", pid, |
| "--headless", |
| "-l", android.SoongDelveListen, |
| "--api-version=2", |
| "--accept-multiclient", |
| "--log", |
| } |
| |
| fmt.Println("Starting", strings.Join(cmd, " ")) |
| dlv := exec.Command(cmd[0], cmd[1:]...) |
| dlv.Stdout = os.Stdout |
| dlv.Stderr = os.Stderr |
| dlv.Stdin = nil |
| |
| // Put dlv into its own process group so we can kill it and the child process it starts. |
| dlv.SysProcAttr = &syscall.SysProcAttr{Setpgid: true} |
| |
| err := dlv.Start() |
| if err != nil { |
| // Print the error starting dlv and continue. |
| fmt.Println(err) |
| } else { |
| // Kill the process group for dlv when soong_build exits. |
| defer syscall.Kill(-dlv.Process.Pid, syscall.SIGKILL) |
| // Wait to give dlv a chance to connect and pause the process. |
| time.Sleep(time.Second) |
| } |
| } |
| |
| flag.Parse() |
| |
| // The top-level Blueprints file is passed as the first argument. |
| srcDir := filepath.Dir(flag.Arg(0)) |
| |
| ctx := android.NewContext() |
| ctx.Register() |
| |
| configuration, err := android.NewConfig(srcDir, bootstrap.BuildDir) |
| if err != nil { |
| fmt.Fprintf(os.Stderr, "%s", err) |
| os.Exit(1) |
| } |
| |
| if docFile != "" { |
| configuration.SetStopBefore(bootstrap.StopBeforePrepareBuildActions) |
| } |
| |
| ctx.SetNameInterface(newNameResolver(configuration)) |
| |
| ctx.SetAllowMissingDependencies(configuration.AllowMissingDependencies()) |
| |
| extraNinjaDeps := []string{configuration.ConfigFileName, configuration.ProductVariablesFileName} |
| |
| // Read the SOONG_DELVE again through configuration so that there is a dependency on the environment variable |
| // and soong_build will rerun when it is set for the first time. |
| if listen := configuration.Getenv("SOONG_DELVE"); listen != "" { |
| // Add a non-existent file to the dependencies so that soong_build will rerun when the debugger is |
| // enabled even if it completed successfully. |
| extraNinjaDeps = append(extraNinjaDeps, filepath.Join(configuration.BuildDir(), "always_rerun_for_delve")) |
| } |
| |
| bootstrap.Main(ctx.Context, configuration, extraNinjaDeps...) |
| |
| if docFile != "" { |
| if err := writeDocs(ctx, docFile); err != nil { |
| fmt.Fprintf(os.Stderr, "%s", err) |
| os.Exit(1) |
| } |
| } |
| } |