// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_DEBUG_DEBUG_COVERAGE_H_
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#define V8_DEBUG_DEBUG_COVERAGE_H_
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#include <vector>
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#include "src/debug/debug-interface.h"
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#include "src/objects.h"
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namespace v8 {
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namespace internal {
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// Forward declaration.
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class Isolate;
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struct CoverageBlock {
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CoverageBlock(int s, int e, uint32_t c) : start(s), end(e), count(c) {}
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CoverageBlock() : CoverageBlock(kNoSourcePosition, kNoSourcePosition, 0) {}
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int start;
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int end;
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uint32_t count;
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};
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struct CoverageFunction {
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CoverageFunction(int s, int e, uint32_t c, Handle<String> n)
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: start(s), end(e), count(c), name(n), has_block_coverage(false) {}
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int start;
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int end;
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uint32_t count;
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Handle<String> name;
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// Blocks are sorted by start position, from outer to inner blocks.
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std::vector<CoverageBlock> blocks;
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bool has_block_coverage;
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};
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struct CoverageScript {
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// Initialize top-level function in case it has been garbage-collected.
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explicit CoverageScript(Handle<Script> s) : script(s) {}
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Handle<Script> script;
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// Functions are sorted by start position, from outer to inner function.
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std::vector<CoverageFunction> functions;
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};
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class Coverage : public std::vector<CoverageScript> {
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public:
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// Collecting precise coverage only works if the modes kPreciseCount or
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// kPreciseBinary is selected. The invocation count is reset on collection.
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// In case of kPreciseCount, an updated count since last collection is
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// returned. In case of kPreciseBinary, a count of 1 is returned if a
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// function has been executed for the first time since last collection.
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static std::unique_ptr<Coverage> CollectPrecise(Isolate* isolate);
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// Collecting best effort coverage always works, but may be imprecise
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// depending on selected mode. The invocation count is not reset.
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static std::unique_ptr<Coverage> CollectBestEffort(Isolate* isolate);
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// Select code coverage mode.
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static void SelectMode(Isolate* isolate, debug::Coverage::Mode mode);
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private:
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static std::unique_ptr<Coverage> Collect(
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Isolate* isolate, v8::debug::Coverage::Mode collectionMode);
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Coverage() {}
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};
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} // namespace internal
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} // namespace v8
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#endif // V8_DEBUG_DEBUG_COVERAGE_H_
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