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CodeCoverage.cpp
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CodeCoverage.cpp
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#include "root.h"
#include "ZigSourceProvider.h"
#include <JavaScriptCore/ControlFlowProfiler.h>
using namespace JSC;
extern "C" bool CodeCoverage__withBlocksAndFunctions(
JSC::VM* vmPtr,
JSC::SourceID sourceID,
void* ctx,
bool ignoreSourceMap,
void (*blockCallback)(void* ctx, JSC::BasicBlockRange* range, size_t len, size_t functionOffset, bool ignoreSourceMap))
{
VM& vm = *vmPtr;
auto basicBlocks = vm.controlFlowProfiler()->getBasicBlocksForSourceIDWithoutFunctionRange(
sourceID, vm);
if (basicBlocks.isEmpty()) {
blockCallback(ctx, nullptr, 0, 0, ignoreSourceMap);
return true;
}
size_t functionStartOffset = basicBlocks.size();
const Vector<std::tuple<bool, unsigned, unsigned>>& functionRanges = vm.functionHasExecutedCache()->getFunctionRanges(sourceID);
basicBlocks.reserveCapacity(functionRanges.size() + basicBlocks.size());
for (const auto& functionRange : functionRanges) {
BasicBlockRange range;
range.m_hasExecuted = std::get<0>(functionRange);
range.m_startOffset = static_cast<int>(std::get<1>(functionRange));
range.m_endOffset = static_cast<int>(std::get<2>(functionRange));
range.m_executionCount = range.m_hasExecuted
? 1
: 0; // This is a hack. We don't actually count this.
basicBlocks.append(range);
}
blockCallback(ctx, basicBlocks.data(), basicBlocks.size(), functionStartOffset, ignoreSourceMap);
return true;
}