Add profiling for Skylark lexer, parser, user- and built-in functions.

--
MOS_MIGRATED_REVID=101769963

src/main/java/com/google/devtools/build/lib/profiler/ProfilerTask.java

diff --git a/src/main/java/com/google/devtools/build/lib/profiler/ProfilerTask.java b/src/main/java/com/google/devtools/build/lib/profiler/ProfilerTask.java
index 5537bf0..37349b1 100644
--- a/src/main/java/com/google/devtools/build/lib/profiler/ProfilerTask.java
+++ b/src/main/java/com/google/devtools/build/lib/profiler/ProfilerTask.java
@@ -81,6 +81,10 @@
   CONSTRUCT_INCLUDE_PATHS("construct include paths"),
   PARSE_AND_HINTS_RESULTS("parse and hints results"),
   PROCESS_RESULTS_AND_ENQUEUE("process results and enqueue"),
+  SKYLARK_LEXER("Skylark Lexer"),
+  SKYLARK_PARSER("Skylark Parser"),
+  SKYLARK_USER_FN("Skylark user function call", -1, 0xCC0033, 0),
+  SKYLARK_BUILTIN_FN("Skylark builtin function call", -1, 0x990033, 0),
   UNKNOWN("Unknown event", -1, 0x339966, 0);
 
   // Size of the ProfilerTask value space.

src/main/java/com/google/devtools/build/lib/syntax/BuiltinFunction.java

diff --git a/src/main/java/com/google/devtools/build/lib/syntax/BuiltinFunction.java b/src/main/java/com/google/devtools/build/lib/syntax/BuiltinFunction.java
index 6b94d32..9fcf9a4 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/BuiltinFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/BuiltinFunction.java
@@ -15,16 +15,16 @@
 
 import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.events.Location;
+import com.google.devtools.build.lib.profiler.Profiler;
+import com.google.devtools.build.lib.profiler.ProfilerTask;
 import com.google.devtools.build.lib.syntax.SkylarkSignatureProcessor.HackHackEitherList;
 import com.google.devtools.build.lib.syntax.SkylarkType.SkylarkFunctionType;
-
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.NoSuchElementException;
 import java.util.concurrent.ExecutionException;
-
 import javax.annotation.Nullable;
 
 /**
@@ -145,6 +145,7 @@
       }
     }
 
+    long startTime = Profiler.nanoTimeMaybe();
     // Last but not least, actually make an inner call to the function with the resolved arguments.
     try {
       return invokeMethod.invoke(this, args);
@@ -185,6 +186,8 @@
       throw badCallException(loc, e, args);
     } catch (IllegalAccessException e) {
       throw badCallException(loc, e, args);
+    } finally {
+      Profiler.instance().logSimpleTask(startTime, ProfilerTask.SKYLARK_BUILTIN_FN, getName());
     }
   }
 

src/main/java/com/google/devtools/build/lib/syntax/Lexer.java

diff --git a/src/main/java/com/google/devtools/build/lib/syntax/Lexer.java b/src/main/java/com/google/devtools/build/lib/syntax/Lexer.java
index 9d14886..6a7a14a 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/Lexer.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/Lexer.java
@@ -19,6 +19,8 @@
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.events.EventHandler;
 import com.google.devtools.build.lib.events.Location;
+import com.google.devtools.build.lib.profiler.Profiler;
+import com.google.devtools.build.lib.profiler.ProfilerTask;
 import com.google.devtools.build.lib.util.Pair;
 import com.google.devtools.build.lib.vfs.PathFragment;
 
@@ -98,7 +100,9 @@
     this.locationInfo = new LocationInfo(input.getPath(), lineNumberTable);
 
     indentStack.push(0);
+    long startTime = Profiler.nanoTimeMaybe();
     tokenize();
+    Profiler.instance().logSimpleTask(startTime, ProfilerTask.SKYLARK_LEXER, getFilename());
   }
 
   public Lexer(ParserInputSource input, EventHandler eventHandler) {

src/main/java/com/google/devtools/build/lib/syntax/Parser.java

diff --git a/src/main/java/com/google/devtools/build/lib/syntax/Parser.java b/src/main/java/com/google/devtools/build/lib/syntax/Parser.java
index 6334673..bbed96e 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/Parser.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/Parser.java
@@ -27,6 +27,8 @@
 import com.google.devtools.build.lib.events.EventHandler;
 import com.google.devtools.build.lib.events.Location;
 import com.google.devtools.build.lib.packages.CachingPackageLocator;
+import com.google.devtools.build.lib.profiler.Profiler;
+import com.google.devtools.build.lib.profiler.ProfilerTask;
 import com.google.devtools.build.lib.syntax.DictionaryLiteral.DictionaryEntryLiteral;
 import com.google.devtools.build.lib.syntax.IfStatement.ConditionalStatements;
 import com.google.devtools.build.lib.vfs.Path;
@@ -339,7 +341,7 @@
 
   // Keywords that exist in Python and that we don't parse.
   private static final EnumSet<TokenKind> FORBIDDEN_KEYWORDS =
-      EnumSet.of(TokenKind.AS, TokenKind.ASSERT, 
+      EnumSet.of(TokenKind.AS, TokenKind.ASSERT,
           TokenKind.DEL, TokenKind.EXCEPT, TokenKind.FINALLY, TokenKind.FROM, TokenKind.GLOBAL,
           TokenKind.IMPORT, TokenKind.IS, TokenKind.LAMBDA, TokenKind.NONLOCAL, TokenKind.RAISE,
           TokenKind.TRY, TokenKind.WITH, TokenKind.WHILE, TokenKind.YIELD);
@@ -1056,6 +1058,7 @@
 
   // file_input ::= ('\n' | stmt)* EOF
   private List<Statement> parseFileInput() {
+    long startTime = Profiler.nanoTimeMaybe();
     List<Statement> list =  new ArrayList<>();
     while (token.kind != TokenKind.EOF) {
       if (token.kind == TokenKind.NEWLINE) {
@@ -1069,6 +1072,7 @@
         parseTopLevelStatement(list);
       }
     }
+    Profiler.instance().logSimpleTask(startTime, ProfilerTask.SKYLARK_PARSER, includedFiles);
     return list;
   }
 
@@ -1079,10 +1083,10 @@
       expect(TokenKind.STRING);
       return;
     }
-    
+
     Token pathToken = token;
     String path = (String) token.value;
-    
+
     nextToken();
     expect(TokenKind.COMMA);
 
@@ -1098,7 +1102,7 @@
       parseLoadSymbol(symbols);
     }
     expect(TokenKind.RPAREN);
-    
+
     LoadStatement stmt = new LoadStatement(path, symbols);
 
     // Although validateLoadPath() is invoked as part of validate(ValidationEnvironment),
@@ -1490,7 +1494,7 @@
     int start = token.left;
     int end = token.right;
     expect(TokenKind.RETURN);
-    
+
     Expression expression;
     if (STATEMENT_TERMINATOR_SET.contains(token.kind)) {
         // this None makes the AST not correspond to the source exactly anymore

src/main/java/com/google/devtools/build/lib/syntax/UserDefinedFunction.java

diff --git a/src/main/java/com/google/devtools/build/lib/syntax/UserDefinedFunction.java b/src/main/java/com/google/devtools/build/lib/syntax/UserDefinedFunction.java
index 750429d..f9719ae 100644
--- a/src/main/java/com/google/devtools/build/lib/syntax/UserDefinedFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/syntax/UserDefinedFunction.java
@@ -15,6 +15,8 @@
 
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.events.Location;
+import com.google.devtools.build.lib.profiler.Profiler;
+import com.google.devtools.build.lib.profiler.ProfilerTask;
 
 /**
  * The actual function registered in the environment. This function is defined in the
@@ -57,6 +59,7 @@
       env.update(name, arguments[i++]);
     }
 
+    long startTimeProfiler = Profiler.nanoTimeMaybe();
     Statement lastStatement = null;
     try {
       for (Statement stmt : statements) {
@@ -74,6 +77,8 @@
           new EvalExceptionWithStackTrace(ex, lastStatement.getLocation());
       real.registerStatement(lastStatement);
       throw real;
+    } finally {
+      Profiler.instance().logSimpleTask(startTimeProfiler, ProfilerTask.SKYLARK_USER_FN, getName());
     }
     return Environment.NONE;
   }