go/src/internal/fuzz/coverage.go

// ResetCoverage sets all of the counters for each edge of the instrumented
// source code to 0.
func ResetCoverage() { … }

// SnapshotCoverage copies the current counter values into coverageSnapshot,
// preserving them for later inspection. SnapshotCoverage also rounds each
// counter down to the nearest power of two. This lets the coordinator store
// multiple values for each counter by OR'ing them together.
func SnapshotCoverage() { … }

// diffCoverage returns a set of bits set in snapshot but not in base.
// If there are no new bits set, diffCoverage returns nil.
func diffCoverage(base, snapshot []byte) []byte { … }

// countNewCoverageBits returns the number of bits set in snapshot that are not
// set in base.
func countNewCoverageBits(base, snapshot []byte) int { … }

// isCoverageSubset returns true if all the base coverage bits are set in
// snapshot.
func isCoverageSubset(base, snapshot []byte) bool { … }

// hasCoverageBit returns true if snapshot has at least one bit set that is
// also set in base.
func hasCoverageBit(base, snapshot []byte) bool { … }

func countBits(cov []byte) int { … }

var coverageEnabled …

var coverageSnapshot …

var (
	_counters …
	_ecounters …
)