From e2edf2e141a09c025a958d580c7cac7b57c70d83 Mon Sep 17 00:00:00 2001
From: cpeyser <cpeyser@google.com>
Date: Mon, 22 May 2017 18:23:41 +0200
Subject: Automated g4 rollback of commit
 c78c947e6a8cbb323304f872a3dcabb989a3d76b.

*** Reason for rollback ***

Breaks android targets in the nightly - see []

*** Original change description ***

Do not retain transitive data in AndroidLocalTestBase.

The argument strings and artifacts were both transitive and flattened, causing O(N^2) memory consumption.

PiperOrigin-RevId: 156745610
---
 .../build/lib/analysis/actions/CommandLine.java    | 43 +++-------------------
 .../lib/analysis/actions/ParamFileHelper.java      |  2 +-
 2 files changed, 7 insertions(+), 38 deletions(-)

(limited to 'src/main/java/com/google/devtools/build/lib/analysis/actions')

diff --git a/src/main/java/com/google/devtools/build/lib/analysis/actions/CommandLine.java b/src/main/java/com/google/devtools/build/lib/analysis/actions/CommandLine.java
index 7bc670569a..1d3e0bebb8 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/actions/CommandLine.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/actions/CommandLine.java
@@ -19,17 +19,10 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Iterables;
 import com.google.devtools.build.lib.actions.Artifact.ArtifactExpander;
 import com.google.devtools.build.lib.collect.CollectionUtils;
+import com.google.devtools.build.lib.util.Preconditions;
 
 /** A representation of a list of arguments, often a command executed by {@link SpawnAction}. */
 public abstract class CommandLine {
-  public static final CommandLine EMPTY =
-      new CommandLine() {
-        @Override
-        public Iterable<String> arguments() {
-          return ImmutableList.of();
-        }
-      };
-
   /**
    * Returns the command line.
    */
@@ -62,42 +55,18 @@ public abstract class CommandLine {
    * Returns a {@link CommandLine} that is constructed by prepending the {@code executableArgs} to
    * {@code commandLine}.
    */
-  public static CommandLine concat(
-      final ImmutableList<String> executableArgs, final CommandLine commandLine) {
-    if (executableArgs.isEmpty()) {
-      return commandLine;
-    }
-    return new CommandLine() {
-      @Override
-      public Iterable<String> arguments() {
-        return Iterables.concat(executableArgs, commandLine.arguments());
-      }
-
-      @Override
-      public Iterable<String> arguments(ArtifactExpander artifactExpander) {
-        return Iterables.concat(executableArgs, commandLine.arguments(artifactExpander));
-      }
-    };
-  }
-
-  /**
-   * Returns a {@link CommandLine} that is constructed by appending the {@code args} to {@code
-   * commandLine}.
-   */
-  public static CommandLine concat(
-      final CommandLine commandLine, final ImmutableList<String> args) {
-    if (args.isEmpty()) {
-      return commandLine;
-    }
+  CommandLine prepend(final ImmutableList<String> executableArgs) {
+    final CommandLine self = this;
+    Preconditions.checkState(!executableArgs.isEmpty());
     return new CommandLine() {
       @Override
       public Iterable<String> arguments() {
-        return Iterables.concat(commandLine.arguments(), args);
+        return Iterables.concat(executableArgs, self.arguments());
       }
 
       @Override
       public Iterable<String> arguments(ArtifactExpander artifactExpander) {
-        return Iterables.concat(commandLine.arguments(artifactExpander), args);
+        return Iterables.concat(executableArgs, self.arguments(artifactExpander));
       }
     };
   }
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/actions/ParamFileHelper.java b/src/main/java/com/google/devtools/build/lib/analysis/actions/ParamFileHelper.java
index d1253c98e0..e39401ac04 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/actions/ParamFileHelper.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/actions/ParamFileHelper.java
@@ -137,7 +137,7 @@ public final class ParamFileHelper {
       return commandLine;
     }
 
-    return CommandLine.concat(ImmutableList.copyOf(executableArgs), commandLine);
+    return commandLine.prepend(ImmutableList.copyOf(executableArgs));
   }
 
   /**
-- 
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