Add build tracing
This creates a rotating build.trace.gz in the out directory that can be
loaded with chrome://tracing. It'll include start and end timings for
make/soong/kati/ninja, and it will import and time-correct the ninja log
files.
Test: m -j; load out/build.trace.gz in chrome://tracing
Test: multiproduct_kati -keep; load out/multiproduct*/build.trace.gz
Change-Id: Ic060fa9515eb88d95dbe16712479dae9dffcf626
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 88e4161..d017e70 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -20,6 +20,9 @@
)
func runSoongBootstrap(ctx Context, config Config) {
+ ctx.BeginTrace("bootstrap soong")
+ defer ctx.EndTrace()
+
cmd := exec.CommandContext(ctx.Context, "./bootstrap.bash")
env := config.Environment().Copy()
env.Set("BUILDDIR", config.SoongOutDir())
@@ -37,6 +40,9 @@
}
func runSoong(ctx Context, config Config) {
+ ctx.BeginTrace("soong")
+ defer ctx.EndTrace()
+
cmd := exec.CommandContext(ctx.Context, filepath.Join(config.SoongOutDir(), "soong"), "-w", "dupbuild=err")
if config.IsVerbose() {
cmd.Args = append(cmd.Args, "-v")