funcgraph

package
v0.1.0 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Sep 18, 2024 License: MIT Imports: 31 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	MaxParaLen      = funcgraphTraceConstantPARA_LEN
	MaxLenPerTrace  = int(funcgraphTraceConstantMAX_TRACE_DATA)
	MaxTraceDataLen = int(funcgraphTraceConstantMAX_TRACE_BUF)
	MaxTraceCount   = int(funcgraphTraceConstantMAX_TRACES)
)
View Source 
const (
	MaxRegParas = 6
)

Variables

View Source 
var RegToStr = []string{"rdi", "rsi", "rdx", "rcx", "r8", "r9"}
View Source 
var RetReg = "rax"

Functions

func ByteSliceToString 

func ByteSliceToString(s []byte) string

func FuncsFromFile 

func FuncsFromFile(pattern string) map[Symbol]struct{}

func LoadbtfSpec 

func LoadbtfSpec(mod string) (*btf.Spec, error)

func NewDumpOption 

func NewDumpOption() (*dumpOption, error)

func ShowBtfFunc 

func ShowBtfFunc(fn *btf.Func) (s string)

Types

type Addr 

type Addr struct {
	Base  uint32 `parser:"@Number"`
	Index uint32 `parser:"Separator @Number"`
	Scale int32  `parser:"Separator @Number"`
	Imm   int32  `parser:"Separator @Number"`
}

type Arg added in v0.1.0 

type Arg struct {
	Name   string
	Kind   ArgKind
	IdxOff uint32
	Size   int
	Typ    btf.Type
}

type ArgKind added in v0.1.0 

type ArgKind = funcgraphArgKind
const (
	REG       ArgKind = funcgraphArgKindREG
	STACK     ArgKind = funcgraphArgKindSTACK
	ADDR      ArgKind = funcgraphArgKindADDR
	RET_REG   ArgKind = funcgraphArgKindRET_REG
	RET_STACK ArgKind = funcgraphArgKindRET_STACK
	REG_PTR   ArgKind = funcgraphArgKindREG_PTR
	STACK_PTR ArgKind = funcgraphArgKindSTACK_PTR
)

type CastType added in v0.0.7 

type CastType struct {
	Moudle string `parser:"(@Ident Colon)?"`
	Name   string `parser:"@Ident"`
}

type Compare 

type Compare struct {
	Operator  string `parser:"Whitespace@Operator"`
	Threshold Value  `parser:"Whitespace@(String|Number)"`
}

type DataExpr 

type DataExpr struct {
	Dereference bool     `parser:"@DereferenceOperator?"`
	Typ         CastType `parser:"(LeftEdge Struct Whitespace @@ Whitespace DereferenceOperator RightEdge)?"`
	First       Primary  `parser:"@@"`
	Fields      []Field  `parser:"@@*"`
	ShowString  bool     `parser:"@ShowString?"`
	CompareInfo Compare  `parser:"@@?"`
}

func (DataExpr) String added in v0.1.0 

func (d DataExpr) String() string

type Event 

type Event uint8
const (
	CallEvent Event = iota
	StartEvent
	EntryEvent
	RetEvent
)

type EventStat 

type EventStat uint8
const (
	CallSucess EventStat = iota
	CallDrop
	StartSucess
	StartDrop
	EntrySucess
	EntryDrop
	RetSucess
	RetDrop
)

type Field 

type Field struct {
	Name string `parser:"ArrowOperator@(Ident (Period Ident)*)"`
}

type FuncEvent 

type FuncEvent struct {
	Type     uint8
	Task     uint64
	CpuId    uint32
	Depth    uint64
	SeqId    uint64
	Ip       uint64
	Id       uint32
	Time     uint64
	Para     [funcgraphTraceConstantPARA_LEN]uint64
	DataLen  uint16
	DataOff  [MaxTraceCount]int16
	Data     *[MaxTraceDataLen]uint8
	Duration uint64
	Ret      [funcgraphTraceConstantPARA_LEN]uint64
}

type FuncEvents 

type FuncEvents []FuncEvent

func (*FuncEvents) Add 

func (es *FuncEvents) Add(e FuncEvent)

func (*FuncEvents) Reset 

func (es *FuncEvents) Reset()

type FuncExpr 

type FuncExpr struct {
	Module string     `parser:"(@Ident Colon)?"`
	Name   string     `parser:"@Ident"`
	Datas  []DataExpr `parser:"(LeftEdge@@(Whitespace? Separator Whitespace? @@)*RightEdge)?"`
}

func ParseFuncWithPara 

func ParseFuncWithPara(s string) (*FuncExpr, error)

type FuncGraph 

type FuncGraph struct {
	// contains filtered or unexported fields
}

func NewFuncGraph 

func NewFuncGraph(opt *Option) (*FuncGraph, error)

func (*FuncGraph) Init 

func (fg *FuncGraph) Init() error

func (*FuncGraph) Run 

func (fg *FuncGraph) Run() error

type FuncInfo 

type FuncInfo struct {
	IsEntry bool
	Symbol

	Btfinfo *btf.Func
	// contains filtered or unexported fields
}

func (*FuncInfo) GenTraceData added in v0.1.0 

func (f *FuncInfo) GenTraceData(dataExpr DataExpr) error

func (*FuncInfo) InitArgsRet added in v0.1.0 

func (f *FuncInfo) InitArgsRet()

func (*FuncInfo) ShowPara added in v0.1.0 

func (f *FuncInfo) ShowPara(e *FuncEvent, opt *dumpOption, dst *bytes.Buffer)

func (*FuncInfo) ShowRet added in v0.1.0 

func (f *FuncInfo) ShowRet(e *FuncEvent, opt *dumpOption, dst *bytes.Buffer)

func (*FuncInfo) ShowRetTrace added in v0.1.0 

func (f *FuncInfo) ShowRetTrace(e *FuncEvent, opt *dumpOption, dst *bytes.Buffer)

func (*FuncInfo) ShowTrace added in v0.1.0 

func (f *FuncInfo) ShowTrace(e *FuncEvent, opt *dumpOption, dst *bytes.Buffer)

func (*FuncInfo) String added in v0.1.0 

func (f *FuncInfo) String() string

type KSymCache 

type KSymCache struct {
	// contains filtered or unexported fields
}

func NewKSymCache 

func NewKSymCache() (*KSymCache, error)

func (*KSymCache) Iterate 

func (k *KSymCache) Iterate() *SymsIterator

func (*KSymCache) SymbolByAddr 

func (k *KSymCache) SymbolByAddr(addr uint64) Symbol

type Option 

type Option struct {
	EntryFuncs        []string
	AllowFuncs        []string
	DenyFuncs         []string
	EntryFuncsOfDwarf map[Symbol]struct{}
	AllowFuncsOfDwarf map[Symbol]struct{}
	EntryFuncExprs    []*FuncExpr
	AllowFuncExprs    []*FuncExpr
	AllowPids         []int
	DenyPids          []int
	AllowComms        []string
	DenyComms         []string
	Verbose           bool
	BpfLog            bool
	DryRun            bool
	MaxEntries        uint32
	Mode              string
	Target            string
	InheritChild      bool
	Duration          uint64
	Depth             uint64
}

type Primary 

type Primary struct {
	Name string `parser:"@Ident"`
	Addr Addr   `parser:"| LeftEdge @@ RightEdge"`
}

type Symbol 

type Symbol struct {
	Addr   uint64
	Type   SymbolType
	Name   string
	Module string
}

type SymbolType 

type SymbolType int
const (
	FuncType SymbolType = iota
	NonFuncType
)

type SymsIterator 

type SymsIterator struct {
	Symbol
	// contains filtered or unexported fields
}

func (*SymsIterator) Next 

func (iter *SymsIterator) Next() bool

type TraceData 

type TraceData struct {
	IdxOff uint32

	CmpOperator uint8
	Target      uint64
	// contains filtered or unexported fields
}

type Value 

type Value struct {
	// contains filtered or unexported fields
}

func (*Value) Capture added in v0.0.8 

func (v *Value) Capture(values []string) error

func (Value) ShowSignNumber added in v0.0.8 

func (v Value) ShowSignNumber() (int64, error)

func (Value) ShowString added in v0.0.8 

func (v Value) ShowString() (string, error)

func (Value) ShowUnsignNumber added in v0.0.8 

func (v Value) ShowUnsignNumber() (uint64, error)

func (Value) String 

func (v Value) String() string

Source Files

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