Line data    Source code

       1             : // Copyright 2017 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_DEBUG_DEBUG_COVERAGE_H_
       6             : #define V8_DEBUG_DEBUG_COVERAGE_H_
       7             : 
       8             : #include <vector>
       9             : 
      10             : #include "src/debug/debug-interface.h"
      11             : #include "src/objects.h"
      12             : 
      13             : namespace v8 {
      14             : namespace internal {
      15             : 
      16             : // Forward declaration.
      17             : class Isolate;
      18             : 
      19             : struct CoverageFunction {
      20             :   CoverageFunction(int s, int e, uint32_t c, Handle<String> n)
      21        2505 :       : start(s), end(e), count(c), name(n) {}
      22             :   int start;
      23             :   int end;
      24             :   uint32_t count;
      25             :   Handle<String> name;
      26             : };
      27             : 
      28         256 : struct CoverageScript {
      29             :   // Initialize top-level function in case it has been garbage-collected.
      30         359 :   explicit CoverageScript(Handle<Script> s) : script(s) {}
      31             :   Handle<Script> script;
      32             :   // Functions are sorted by start position, from outer to inner function.
      33             :   std::vector<CoverageFunction> functions;
      34             : };
      35             : 
      36         158 : class Coverage : public std::vector<CoverageScript> {
      37             :  public:
      38             :   // Collecting precise coverage only works if the modes kPreciseCount or
      39             :   // kPreciseBinary is selected. The invocation count is reset on collection.
      40             :   // In case of kPreciseCount, an updated count since last collection is
      41             :   // returned. In case of kPreciseBinary, a count of 1 is returned if a
      42             :   // function has been executed for the first time since last collection.
      43             :   static Coverage* CollectPrecise(Isolate* isolate);
      44             :   // Collecting best effort coverage always works, but may be imprecise
      45             :   // depending on selected mode. The invocation count is not reset.
      46             :   static Coverage* CollectBestEffort(Isolate* isolate);
      47             : 
      48             :   // Select code coverage mode.
      49             :   static void SelectMode(Isolate* isolate, debug::Coverage::Mode mode);
      50             : 
      51             :  private:
      52             :   static Coverage* Collect(Isolate* isolate,
      53             :                            v8::debug::Coverage::Mode collectionMode);
      54             : 
      55             :   Coverage() {}
      56             : };
      57             : 
      58             : }  // namespace internal
      59             : }  // namespace v8
      60             : 
      61             : #endif  // V8_DEBUG_DEBUG_COVERAGE_H_