proc

package
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 Go to latest Published: Oct 16, 2017 License: Apache-2.0, MIT Imports: 30 Imported by: 0

Documentation

Overview

Package proc is a low-level package that provides methods to manipulate the process we are debugging.

proc implements all core functionality including: * creating / attaching to a process * process manipulation (step, next, continue, halt) * methods to explore the memory of the process

Index

Constants

View Source 
const (
	GNUFlavour = AssemblyFlavour(iota)
	IntelFlavour
)
View Source 
const (
	Gidle           uint64 = iota // 0
	Grunnable                     // 1 runnable and on a run queue
	Grunning                      // 2
	Gsyscall                      // 3
	Gwaiting                      // 4
	GmoribundUnused               // 5 currently unused, but hardcoded in gdb scripts
	Gdead                         // 6
	Genqueue                      // 7 Only the Gscanenqueue is used.
	Gcopystack                    // 8 in this state when newstack is moving the stack
)

G status, from: src/runtime/runtime2.go

Variables

View Source 
var (
	GoVer18Beta = GoVersion{1, 8, -1, 0, 0, ""}
)
View Source 
var NotExecutableErr = errors.New("not an executable file")
View Source 
var NotRecordedErr = errors.New("not a recording")
View Source 
var OperationOnSpecialFloatError = errors.New("operations on non-finite floats not implemented")
View Source 
var UnknownRegisterError = errors.New("unknown register")
View Source 
var UnsupportedDarwinArchErr = errors.New("unsupported architecture - only darwin/amd64 is supported")
View Source 
var UnsupportedLinuxArchErr = errors.New("unsupported architecture - only linux/amd64 is supported")
View Source 
var UnsupportedWindowsArchErr = errors.New("unsupported architecture of windows/386 - only windows/amd64 is supported")

Functions

func Continue 

func Continue(dbp Process) error

Continue continues execution of the debugged process. It will continue until it hits a breakpoint or is otherwise stopped.

func FindFileLocation 

func FindFileLocation(p Process, fileName string, lineno int) (uint64, error)

FindFileLocation returns the PC for a given file:line. Assumes that `file` is normailzed to lower case and '/' on Windows.

func FindFunctionLocation 

func FindFunctionLocation(p Process, funcName string, firstLine bool, lineOffset int) (uint64, error)

FindFunctionLocation finds address of a function's line If firstLine == true is passed FindFunctionLocation will attempt to find the first line of the function If lineOffset is passed FindFunctionLocation will return the address of that line Pass lineOffset == 0 and firstLine == false if you want the address for the function's entry point Note that setting breakpoints at that address will cause surprising behavior: https://github.com/derekparker/delve/issues/170

func FirstPCAfterPrologue 

func FirstPCAfterPrologue(p Process, fn *gosym.Func, sameline bool) (uint64, error)

FirstPCAfterPrologue returns the address of the first instruction after the prologue for function fn If sameline is set FirstPCAfterPrologue will always return an address associated with the same line as fn.Entry

func Next 

func Next(dbp Process) (err error)

Next continues execution until the next source line.

func SameGoroutineCondition 

func SameGoroutineCondition(g *G) ast.Expr

SameGoroutineCondition returns an expression that evaluates to true when the current goroutine is g.

func Step 

func Step(dbp Process) (err error)

Step will continue until another source line is reached. Will step into functions.

func StepOut 

func StepOut(dbp Process) error

StepOut will continue until the current goroutine exits the function currently being executed or a deferred function is executed

Types

type AMD64 

type AMD64 struct {
	// contains filtered or unexported fields
}

AMD64 represents the AMD64 CPU architecture.

func AMD64Arch 

func AMD64Arch(goos string) *AMD64

AMD64Arch returns an initialized AMD64 struct.

func (*AMD64) BreakpointInstruction 

func (a *AMD64) BreakpointInstruction() []byte

BreakpointInstruction returns the Breakpoint instruction for this architecture.

func (*AMD64) BreakpointSize 

func (a *AMD64) BreakpointSize() int

BreakpointSize returns the size of the breakpoint instruction on this architecture.

func (*AMD64) DerefTLS 

func (a *AMD64) DerefTLS() bool

If DerefTLS returns true the value of regs.TLS()+GStructOffset() is a pointer to the G struct

func (*AMD64) GStructOffset 

func (a *AMD64) GStructOffset() uint64

GStructOffset returns the offset of the G struct in thread local storage.

func (*AMD64) PtrSize 

func (a *AMD64) PtrSize() int

PtrSize returns the size of a pointer on this architecture.

func (*AMD64) SetGStructOffset 

func (a *AMD64) SetGStructOffset(ver GoVersion, isextld bool)

SetGStructOffset sets the offset of the G struct on the AMD64 arch struct. The offset is dependent on the Go compiler Version and whether or not the target program was externally linked.

type AllGCache 

type AllGCache interface {
	AllGCache() *[]*G
}

If the argument of GoroutinesInfo implements AllGCache GoroutinesInfo will use the pointer returned by AllGCache as a cache.

type Arch 

type Arch interface {
	SetGStructOffset(ver GoVersion, iscgo bool)
	PtrSize() int
	BreakpointInstruction() []byte
	BreakpointSize() int
	GStructOffset() uint64
	DerefTLS() bool
}

Arch defines an interface for representing a CPU architecture.

type ArchInst 

type ArchInst x86asm.Inst

func (*ArchInst) Size 

func (inst *ArchInst) Size() int

type AsmInstruction 

type AsmInstruction struct {
	Loc        Location
	DestLoc    *Location
	Bytes      []byte
	Breakpoint bool
	AtPC       bool
	Inst       *ArchInst
}

func Disassemble 

func Disassemble(dbp Process, g *G, startPC, endPC uint64) ([]AsmInstruction, error)

Disassemble disassembles target memory between startPC and endPC, marking the current instruction being executed in goroutine g. If currentGoroutine is set and thread is stopped at a CALL instruction Disassemble will evaluate the argument of the CALL instruction using the thread's registers Be aware that the Bytes field of each returned instruction is a slice of a larger array of size endPC - startPC

func (*AsmInstruction) IsCall 

func (inst *AsmInstruction) IsCall() bool

func (*AsmInstruction) Text 

func (inst *AsmInstruction) Text(flavour AssemblyFlavour) string

type AssemblyFlavour 

type AssemblyFlavour int

type BinaryInfo 

type BinaryInfo struct {
	GOOS string

	Arch Arch
	// contains filtered or unexported fields
}

func NewBinaryInfo 

func NewBinaryInfo(goos, goarch string) BinaryInfo

func (*BinaryInfo) Close 

func (bi *BinaryInfo) Close() error

func (*BinaryInfo) DwarfReader 

func (bi *BinaryInfo) DwarfReader() *reader.Reader

DwarfReader returns a reader for the dwarf data

func (*BinaryInfo) Funcs 

func (bi *BinaryInfo) Funcs() []gosym.Func

Funcs returns list of functions present in the debugged program.

func (*BinaryInfo) LastModified 

func (bi *BinaryInfo) LastModified() time.Time

func (*BinaryInfo) LineToPC 

func (bi *BinaryInfo) LineToPC(filename string, lineno int) (pc uint64, fn *gosym.Func, err error)

LineToPC converts a file:line into a memory address.

func (*BinaryInfo) LoadBinaryInfo 

func (bininfo *BinaryInfo) LoadBinaryInfo(path string, wg *sync.WaitGroup) error

func (*BinaryInfo) LoadBinaryInfoElf 

func (bi *BinaryInfo) LoadBinaryInfoElf(path string, wg *sync.WaitGroup) error

func (*BinaryInfo) LoadBinaryInfoMacho 

func (bi *BinaryInfo) LoadBinaryInfoMacho(path string, wg *sync.WaitGroup) error

func (*BinaryInfo) LoadBinaryInfoPE 

func (bi *BinaryInfo) LoadBinaryInfoPE(path string, wg *sync.WaitGroup) error

func (*BinaryInfo) PCToFunc 

func (bi *BinaryInfo) PCToFunc(pc uint64) *gosym.Func

PCToFunc returns the function containing the given PC address

func (*BinaryInfo) PCToLine 

func (bi *BinaryInfo) PCToLine(pc uint64) (string, int, *gosym.Func)

PCToLine converts an instruction address to a file/line/function.

func (*BinaryInfo) Sources 

func (bi *BinaryInfo) Sources() map[string]*gosym.Obj

Sources returns list of source files that comprise the debugged binary.

func (*BinaryInfo) Types 

func (bi *BinaryInfo) Types() ([]string, error)

Types returns list of types present in the debugged program.

type Breakpoint 

type Breakpoint struct {
	// File & line information for printing.
	FunctionName string
	File         string
	Line         int

	Addr         uint64         // Address breakpoint is set for.
	OriginalData []byte         // If software breakpoint, the data we replace with breakpoint instruction.
	Name         string         // User defined name of the breakpoint
	ID           int            // Monotonically increasing ID.
	Kind         BreakpointKind // Whether this is an internal breakpoint (for next'ing or stepping).

	// Breakpoint information
	Tracepoint    bool     // Tracepoint flag
	Goroutine     bool     // Retrieve goroutine information
	Stacktrace    int      // Number of stack frames to retrieve
	Variables     []string // Variables to evaluate
	LoadArgs      *LoadConfig
	LoadLocals    *LoadConfig
	HitCount      map[int]uint64 // Number of times a breakpoint has been reached in a certain goroutine
	TotalHitCount uint64         // Number of times a breakpoint has been reached

	// DeferReturns: when kind == NextDeferBreakpoint this breakpoint
	// will also check if the caller is runtime.gopanic or if the return
	// address is in the DeferReturns array.
	// Next uses NextDeferBreakpoints for the breakpoint it sets on the
	// deferred function, DeferReturns is populated with the
	// addresses of calls to runtime.deferreturn in the current
	// function. This insures that the breakpoint on the deferred
	// function only triggers on panic or on the defer call to
	// the function, not when the function is called directly
	DeferReturns []uint64
	// Cond: if not nil the breakpoint will be triggered only if evaluating Cond returns true
	Cond ast.Expr
}

Breakpoint represents a breakpoint. Stores information on the break point including the byte of data that originally was stored at that address.

func (*Breakpoint) CheckCondition 

func (bp *Breakpoint) CheckCondition(thread Thread) (bool, error)

CheckCondition evaluates bp's condition on thread.

func (*Breakpoint) Internal 

func (bp *Breakpoint) Internal() bool

Internal returns true for breakpoints not set directly by the user.

func (*Breakpoint) String 

func (bp *Breakpoint) String() string

type BreakpointExistsError 

type BreakpointExistsError struct {
	File string
	Line int
	Addr uint64
}

BreakpointExistsError is returned when trying to set a breakpoint at an address that already has a breakpoint set for it.

func (BreakpointExistsError) Error 

func (bpe BreakpointExistsError) Error() string

type BreakpointKind 

type BreakpointKind int

Breakpoint Kind determines the behavior of delve when the breakpoint is reached. 

const (
	// UserBreakpoint is a user set breakpoint
	UserBreakpoint BreakpointKind = iota
	// NextBreakpoint is a breakpoint set by Next, Continue
	// will stop on it and delete it
	NextBreakpoint
	// NextDeferBreakpoint is a breakpoint set by Next on the
	// first deferred function. In addition to checking their condition
	// breakpoints of this kind will also check that the function has been
	// called by runtime.gopanic or through runtime.deferreturn.
	NextDeferBreakpoint
	// StepBreakpoint is a breakpoint set by Step on a CALL instruction,
	// Continue will set a new breakpoint (of NextBreakpoint kind) on the
	// destination of CALL, delete this breakpoint and then continue again
	StepBreakpoint
)

type BreakpointManipulation 

type BreakpointManipulation interface {
	Breakpoints() map[uint64]*Breakpoint
	SetBreakpoint(addr uint64, kind BreakpointKind, cond ast.Expr) (*Breakpoint, error)
	ClearBreakpoint(addr uint64) (*Breakpoint, error)
	ClearInternalBreakpoints() error
}

BreakpointManipulation is an interface for managing breakpoints.

type Checkpoint 

type Checkpoint struct {
	ID    int
	When  string
	Where string
}

Checkpoint is a checkpoint

type Direction 

type Direction int8
const (
	Forward  Direction = 0
	Backward Direction = 1
)

type EvalScope 

type EvalScope struct {
	PC      uint64           // Current instruction of the evaluation frame
	CFA     int64            // Stack address of the evaluation frame
	Mem     MemoryReadWriter // Target's memory
	Gvar    *Variable
	BinInfo *BinaryInfo
	StackHi uint64
}

EvalScope is the scope for variable evaluation. Contains the thread, current location (PC), and canonical frame address.

func ConvertEvalScope 

func ConvertEvalScope(dbp Process, gid, frame int) (*EvalScope, error)

ConvertEvalScope returns a new EvalScope in the context of the specified goroutine ID and stack frame.

func FrameToScope 

func FrameToScope(p Process, frame Stackframe) *EvalScope

FrameToScope returns a new EvalScope for this frame

func GoroutineScope 

func GoroutineScope(thread Thread) (*EvalScope, error)

GoroutineScope returns an EvalScope for the goroutine running on this thread.

func ThreadScope 

func ThreadScope(thread Thread) (*EvalScope, error)

ThreadScope returns an EvalScope for this thread.

func (*EvalScope) DwarfReader 

func (scope *EvalScope) DwarfReader() *reader.Reader

DwarfReader returns the DwarfReader containing the Dwarf information for the target process.

func (*EvalScope) EvalExpression 

func (scope *EvalScope) EvalExpression(expr string, cfg LoadConfig) (*Variable, error)

EvalExpression returns the value of the given expression.

func (*EvalScope) EvalVariable 

func (scope *EvalScope) EvalVariable(name string, cfg LoadConfig) (*Variable, error)

EvalVariable returns the value of the given expression (backwards compatibility).

func (*EvalScope) FunctionArguments 

func (scope *EvalScope) FunctionArguments(cfg LoadConfig) ([]*Variable, error)

FunctionArguments returns the name, value, and type of all current function arguments.

func (*EvalScope) LocalVariables 

func (scope *EvalScope) LocalVariables(cfg LoadConfig) ([]*Variable, error)

LocalVariables returns all local variables from the current function scope.

func (*EvalScope) PackageVariables 

func (scope *EvalScope) PackageVariables(cfg LoadConfig) ([]*Variable, error)

PackageVariables returns the name, value, and type of all package variables in the application.

func (*EvalScope) PtrSize 

func (scope *EvalScope) PtrSize() int

PtrSize returns the size of a pointer.

func (*EvalScope) SetVariable 

func (scope *EvalScope) SetVariable(name, value string) error

SetVariable sets the value of the named variable

func (*EvalScope) Type 

func (scope *EvalScope) Type(offset dwarf.Offset) (dwarf.Type, error)

Type returns the Dwarf type entry at `offset`.

type FloatSpecial 

type FloatSpecial uint8
const (
	FloatIsNormal FloatSpecial = iota
	FloatIsNaN
	FloatIsPosInf
	FloatIsNegInf
)

type G 

type G struct {
	ID         int    // Goroutine ID
	PC         uint64 // PC of goroutine when it was parked.
	SP         uint64 // SP of goroutine when it was parked.
	GoPC       uint64 // PC of 'go' statement that created this goroutine.
	WaitReason string // Reason for goroutine being parked.
	Status     uint64

	// Information on goroutine location
	CurrentLoc Location

	// Thread that this goroutine is currently allocated to
	Thread Thread
	// contains filtered or unexported fields
}

G represents a runtime G (goroutine) structure (at least the fields that Delve is interested in).

func FindGoroutine 

func FindGoroutine(dbp Process, gid int) (*G, error)

FindGoroutine returns a G struct representing the goroutine specified by `gid`.

func GetG 

func GetG(thread Thread) (g *G, err error)

GetG returns information on the G (goroutine) that is executing on this thread.

The G structure for a thread is stored in thread local storage. Here we simply calculate the address and read and parse the G struct.

We cannot simply use the allg linked list in order to find the M that represents the given OS thread and follow its G pointer because on Darwin mach ports are not universal, so our port for this thread would not map to the `id` attribute of the M structure. Also, when linked against libc, Go prefers the libc version of clone as opposed to the runtime version. This has the consequence of not setting M.id for any thread, regardless of OS.

In order to get around all this craziness, we read the address of the G structure for the current thread from the thread local storage area.

func GoroutinesInfo 

func GoroutinesInfo(dbp Process) ([]*G, error)

GoroutinesInfo returns an array of G structures representing the information Delve cares about from the internal runtime G structure.

func (*G) ChanRecvBlocked 

func (g *G) ChanRecvBlocked() bool

ChanRecvBlocked returns whether the goroutine is blocked on a channel read operation.

func (*G) DeferPC 

func (g *G) DeferPC() uint64

PC of entry to top-most deferred function.

func (*G) Go 

func (g *G) Go() Location

Go returns the location of the 'go' statement that spawned this goroutine.

func (*G) Stacktrace 

func (g *G) Stacktrace(depth int) ([]Stackframe, error)

Stacktrace returns the stack trace for a goroutine. Note the locations in the array are return addresses not call addresses.

func (*G) UserCurrent 

func (g *G) UserCurrent() Location

UserCurrent returns the location the users code is at, or was at before entering a runtime function.

type GoVersion 

type GoVersion struct {
	Major    int
	Minor    int
	Rev      int
	Beta     int
	RC       int
	Proposal string
}

GoVersion represents the Go version of the Go compiler version used to compile the target binary.

func GetGoInformation 

func GetGoInformation(p Process) (ver GoVersion, isextld bool, err error)

func ParseVersionString 

func ParseVersionString(ver string) (GoVersion, bool)

func (*GoVersion) AfterOrEqual 

func (v *GoVersion) AfterOrEqual(b GoVersion) bool

AfterOrEqual returns whether one GoVersion is after or equal to the other.

func (*GoVersion) IsDevel 

func (v *GoVersion) IsDevel() bool

IsDevel returns whether the GoVersion is a development version.

type GoroutineInfo 

type GoroutineInfo interface {
	SelectedGoroutine() *G
}

GoroutineInfo is an interface for getting information on running goroutines.

type Info 

type Info interface {
	Pid() int
	Exited() bool
	Running() bool
	BinInfo() *BinaryInfo

	ThreadInfo
	GoroutineInfo
}

Info is an interface that provides general information on the target.

type InvalidAddressError 

type InvalidAddressError struct {
	Address uint64
}

InvalidAddressError represents the result of attempting to set a breakpoint at an invalid address.

func (InvalidAddressError) Error 

func (iae InvalidAddressError) Error() string

type IsNilErr 

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

IsNilErr is returned when a variable is nil.

func (*IsNilErr) Error 

func (err *IsNilErr) Error() string

type LoadConfig 

type LoadConfig struct {
	// FollowPointers requests pointers to be automatically dereferenced.
	FollowPointers bool
	// MaxVariableRecurse is how far to recurse when evaluating nested types.
	MaxVariableRecurse int
	// MaxStringLen is the maximum number of bytes read from a string
	MaxStringLen int
	// MaxArrayValues is the maximum number of elements read from an array, a slice or a map.
	MaxArrayValues int
	// MaxStructFields is the maximum number of fields read from a struct, -1 will read all fields.
	MaxStructFields int
}

type Location 

type Location struct {
	PC   uint64
	File string
	Line int
	Fn   *gosym.Func
}

Location represents the location of a thread. Holds information on the current instruction address, the source file:line, and the function.

type MemoryReadWriter 

type MemoryReadWriter interface {
	MemoryReader
	WriteMemory(addr uintptr, data []byte) (written int, err error)
}

type MemoryReader 

type MemoryReader interface {
	// ReadMemory is just like io.ReaderAt.ReadAt.
	ReadMemory(buf []byte, addr uintptr) (n int, err error)
}

MemoryReader is like io.ReaderAt, but the offset is a uintptr so that it can address all of 64-bit memory. Redundant with memoryReadWriter but more easily suited to working with the standard io package.

type NoBreakpointError 

type NoBreakpointError struct {
	Addr uint64
}

NoBreakpointError is returned when trying to clear a breakpoint that does not exist.

func (NoBreakpointError) Error 

func (nbp NoBreakpointError) Error() string

type NoGError 

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

NoGError returned when a G could not be found for a specific thread.

func (NoGError) Error 

func (ng NoGError) Error() string

type NoReturnAddr 

type NoReturnAddr struct {
	Fn string
}

NoReturnAddr is returned when return address could not be found during stack trace.

func (NoReturnAddr) Error 

func (nra NoReturnAddr) Error() string

type NullAddrError 

type NullAddrError struct{}

NullAddrError is an error for a null address.

func (NullAddrError) Error 

func (n NullAddrError) Error() string

type Process 

type Process interface {
	Info
	ProcessManipulation
	BreakpointManipulation
	RecordingManipulation
}

Process represents the target of the debugger. This target could be a system process, core file, etc.

type ProcessExitedError 

type ProcessExitedError struct {
	Pid    int
	Status int
}

ProcessExitedError indicates that the process has exited and contains both process id and exit status.

func (ProcessExitedError) Error 

func (pe ProcessExitedError) Error() string

type ProcessManipulation 

type ProcessManipulation interface {
	ContinueOnce() (trapthread Thread, err error)
	StepInstruction() error
	SwitchThread(int) error
	SwitchGoroutine(int) error
	RequestManualStop() error
	Halt() error
	Kill() error
	Detach(bool) error
}

ProcessManipulation is an interface for changing the execution state of a process.

type RecordingManipulation 

type RecordingManipulation interface {
	// Recorded returns true if the current process is a recording and the path
	// to the trace directory.
	Recorded() (recorded bool, tracedir string)
	// Restart restarts the recording from the specified position, or from the
	// last checkpoint if pos == "".
	// If pos starts with 'c' it's a checkpoint ID, otherwise it's an event
	// number.
	Restart(pos string) error
	// Direction changes execution direction.
	Direction(Direction) error
	// When returns current recording position.
	When() (string, error)
	// Checkpoint sets a checkpoint at the current position.
	Checkpoint(where string) (id int, err error)
	// Checkpoints returns the list of currently set checkpoint.
	Checkpoints() ([]Checkpoint, error)
	// ClearCheckpoint removes a checkpoint.
	ClearCheckpoint(id int) error
}

RecordingManipulation is an interface for manipulating process recordings.

type Register 

type Register struct {
	Name  string
	Value string
}

func AppendDwordReg 

func AppendDwordReg(regs []Register, name string, value uint32) []Register

AppendDwordReg appends a double word (32 bit) register to regs.

func AppendEflagReg 

func AppendEflagReg(regs []Register, name string, value uint64) []Register

AppendEflagReg appends EFLAG register to regs.

func AppendMxcsrReg 

func AppendMxcsrReg(regs []Register, name string, value uint64) []Register

AppendMxcsrReg appends MXCSR register to regs.

func AppendQwordReg 

func AppendQwordReg(regs []Register, name string, value uint64) []Register

AppendQwordReg appends a quad word (64 bit) register to regs.

func AppendSSEReg 

func AppendSSEReg(regs []Register, name string, xmm []byte) []Register

AppendSSEReg appends a 256 bit SSE register to regs.

func AppendWordReg 

func AppendWordReg(regs []Register, name string, value uint16) []Register

AppendWordReg appends a word (16 bit) register to regs.

func AppendX87Reg 

func AppendX87Reg(regs []Register, index int, exponent uint16, mantissa uint64) []Register

AppendX87Reg appends a 80 bit float register to regs.

type Registers 

type Registers interface {
	PC() uint64
	SP() uint64
	BP() uint64
	CX() uint64
	TLS() uint64
	// GAddr returns the address of the G variable if it is known, 0 and false otherwise
	GAddr() (uint64, bool)
	Get(int) (uint64, error)
	SetPC(Thread, uint64) error
	Slice() []Register
}

Registers is an interface for a generic register type. The interface encapsulates the generic values / actions we need independent of arch. The concrete register types will be different depending on OS/Arch.

type Stackframe 

type Stackframe struct {
	// Address the function above this one on the call stack will return to.
	Current Location
	// Address of the call instruction for the function above on the call stack.
	Call Location
	// Start address of the stack frame.
	CFA int64
	// High address of the stack.
	StackHi uint64
	// Description of the stack frame.
	FDE *frame.FrameDescriptionEntry
	// Return address for this stack frame (as read from the stack frame itself).
	Ret uint64
	// contains filtered or unexported fields
}

Stackframe represents a frame in a system stack.

func ThreadStacktrace 

func ThreadStacktrace(thread Thread, depth int) ([]Stackframe, error)

Stacktrace returns the stack trace for thread. Note the locations in the array are return addresses not call addresses.

type Thread 

type Thread interface {
	MemoryReadWriter
	Location() (*Location, error)
	// Breakpoint will return the breakpoint that this thread is stopped at or
	// nil if the thread is not stopped at any breakpoint.
	// Active will be true if the thread is stopped at a breakpoint and the
	// breakpoint's condition is met.
	// If there was an error evaluating the breakpoint's condition it will be
	// returned as condErr
	Breakpoint() (breakpoint *Breakpoint, active bool, condErr error)
	ThreadID() int
	Registers(floatingPoint bool) (Registers, error)
	Arch() Arch
	BinInfo() *BinaryInfo
	StepInstruction() error
	// Blocked returns true if the thread is blocked
	Blocked() bool
	// SetCurrentBreakpoint updates the current breakpoint of this thread
	SetCurrentBreakpoint() error
}

Thread represents a thread.

type ThreadBlockedError 

type ThreadBlockedError struct{}

ThreadBlockedError is returned when the thread is blocked in the scheduler.

func (ThreadBlockedError) Error 

func (tbe ThreadBlockedError) Error() string

type ThreadInfo 

type ThreadInfo interface {
	FindThread(threadID int) (Thread, bool)
	ThreadList() []Thread
	CurrentThread() Thread
}

ThreadInfo is an interface for getting information on active threads in the process.

type Variable 

type Variable struct {
	Addr      uintptr
	OnlyAddr  bool
	Name      string
	DwarfType dwarf.Type
	RealType  dwarf.Type
	Kind      reflect.Kind

	Value        constant.Value
	FloatSpecial FloatSpecial

	Len int64
	Cap int64

	// Base address of arrays, Base address of the backing array for slices (0 for nil slices)
	// Base address of the backing byte array for strings
	// address of the struct backing chan and map variables
	// address of the function entry point for function variables (0 for nil function pointers)
	Base uintptr

	Children []Variable

	Unreadable error
	// contains filtered or unexported fields
}

Variable represents a variable. It contains the address, name, type and other information parsed from both the Dwarf information and the memory of the debugged process. If OnlyAddr is true, the variables value has not been loaded.

func (*Variable) TypeString 

func (v *Variable) TypeString() string

TypeString returns the string representation of the type of this variable.

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