cmerge

Imports

Imports # 

"fmt"
"internal/coverage"
"math"

Constants & Variables

ModeMergeRelaxed const # 

const ModeMergeRelaxed

ModeMergeStrict const # 

const ModeMergeStrict ModeMergePolicy = iota

Type Aliases

ModeMergePolicy type # 

type ModeMergePolicy uint8

Structs

Merger struct #

Merger provides state and methods to help manage the process of merging together coverage counter data for a given function, for tools that need to implicitly merge counter as they read multiple coverage counter data files.

type Merger struct {
cmode coverage.CounterMode
cgran coverage.CounterGranularity
policy ModeMergePolicy
overflow bool
}

Functions

Granularity method # 

func (cm *Merger) Granularity() coverage.CounterGranularity

MergeCounters method #

MergeCounters takes the counter values in 'src' and merges them into 'dst' according to the correct counter mode.

func (m *Merger) MergeCounters(dst []uint32, src []uint32) (error, bool)

Mode method # 

func (cm *Merger) Mode() coverage.CounterMode

ResetModeAndGranularity method # 

func (cm *Merger) ResetModeAndGranularity()

SaturatingAdd method #

Saturating add does a saturating addition of 'dst' and 'src', returning added value or math.MaxUint32 if there is an overflow. Overflows are recorded in case the client needs to track them.

func (m *Merger) SaturatingAdd(dst uint32, src uint32) uint32

SaturatingAdd function #

Saturating add does a saturating addition of 'dst' and 'src', returning added value or math.MaxUint32 plus an overflow flag.

func SaturatingAdd(dst uint32, src uint32) (uint32, bool)

SetModeAndGranularity method #

SetModeAndGranularity records the counter mode and granularity for the current merge. In the specific case of merging across coverage data files from different binaries, where we're combining data from more than one meta-data file, we need to check for and resolve mode/granularity clashes.

func (cm *Merger) SetModeAndGranularity(mdf string, cmode coverage.CounterMode, cgran coverage.CounterGranularity) error

SetModeMergePolicy method # 

func (cm *Merger) SetModeMergePolicy(policy ModeMergePolicy)

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