commit 913b66c552a6e6b6c4bb496d4ccfd8f3fd518e7c
author olaola <olaola@google.com> Thu Apr 19 10:43:53 2018 -0700
committer Copybara-Service <copybara-piper@google.com> Thu Apr 19 10:45:40 2018 -0700
tree dae0dbb433e71f55db27ebcb29872f222885e294
parent 0a996b413c684b28a8f66600e878c6de36069829

Logging the spawn graph on demand. First step on #4891.

This is a very heavy and slow option by design. It will be enabled only when a user wants to debug their build, most frequently to compare the step-by-step results of two builds.

TESTED: manually on various rules, including directories.
RELNOTES: None
PiperOrigin-RevId: 193539034

src/main/java/com/google/devtools/build/lib/exec/ExecutionOptions.java

diff --git a/src/main/java/com/google/devtools/build/lib/exec/ExecutionOptions.java b/src/main/java/com/google/devtools/build/lib/exec/ExecutionOptions.java
index 8c7e2e1..b7f1b34 100644
--- a/src/main/java/com/google/devtools/build/lib/exec/ExecutionOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/exec/ExecutionOptions.java
@@ -275,6 +275,16 @@
   )
   public boolean enableCriticalPathProfiling;
 
+  @Option(
+    name = "experimental_execution_log_file",
+    defaultValue = "",
+    category = "verbosity",
+    documentationCategory = OptionDocumentationCategory.UNCATEGORIZED,
+    effectTags = {OptionEffectTag.UNKNOWN},
+    help = "Log the executed spawns into this file as delimited Spawn protos."
+  )
+  public String executionLogFile;
+
   /** Converter for the --flaky_test_attempts option. */
   public static class TestAttemptsConverter extends PerLabelOptions.PerLabelOptionsConverter {
     private static final int MIN_VALUE = 1;