[debugger] add precise mode for code coverage.

src/debug/debug-coverage.h

Index: src/debug/debug-coverage.h
diff --git a/src/debug/debug-coverage.h b/src/debug/debug-coverage.h
index d8cae32d589c32c44496ee9c4988bd5c55420ee8..892ff4deff4ba809d946bdee7a3259d47ad6b0f6 100644
--- a/src/debug/debug-coverage.h
+++ b/src/debug/debug-coverage.h
@@ -6,11 +6,14 @@
 #define V8_DEBUG_DEBUG_COVERAGE_H_
 
 #include <vector>
-#include "src/isolate.h"
+#include "src/allocation.h"

[jgruber, 2017/02/09 16:08:48]

This does not seem to be needed here.

[Yang, 2017/02/09 17:42:15]

This is for the AllStatic base class.

 
 namespace v8 {
 namespace internal {
 
+// Forward declaration.
+class Isolate;
+
 class Coverage : public AllStatic {
  public:
   struct RangeEntry {
@@ -24,6 +27,11 @@ class Coverage : public AllStatic {
   };
 
   static std::vector<ScriptData> Collect(Isolate* isolate);
+
+  // Enable precise code coverage. This disables optimization and makes sure
+  // invocation count is not affected by GC.
+  static void EnablePrecise(Isolate* isolate);
+  static void DisablePrecise(Isolate* isolate);
 };
 
 }  // namespace internal