debugger

package
v1.4.1-0...-9011182 Latest Latest
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 Go to latest Published: Apr 7, 2020 License: MIT Imports: 30 Imported by: 0

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Constants

This section is empty.

Variables

View Source 
var (
	// ErrCanNotRestart is returned when the target cannot be restarted.
	// This is returned for targets that have been attached to, or when
	// debugging core files.
	ErrCanNotRestart = errors.New("can not restart this target")

	// ErrNotRecording is returned when StopRecording is called while the
	// debugger is not recording the target.
	ErrNotRecording = errors.New("debugger is not recording")
)

Functions

This section is empty.

Types

type AddrLocationSpec 

type AddrLocationSpec struct {
	AddrExpr string
}

func (*AddrLocationSpec) Find 

func (loc *AddrLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

type AmbiguousLocationError 

type AmbiguousLocationError struct {
	Location           string
	CandidatesString   []string
	CandidatesLocation []api.Location
}

func (AmbiguousLocationError) Error 

func (ale AmbiguousLocationError) Error() string

type Config 

type Config struct {
	// WorkingDir is working directory of the new process. This field is used
	// only when launching a new process.
	WorkingDir string

	// AttachPid is the PID of an existing process to which the debugger should
	// attach.
	AttachPid int

	// CoreFile specifies the path to the core dump to open.
	CoreFile string
	// Backend specifies the debugger backend.
	Backend string

	// Foreground lets target process access stdin.
	Foreground bool

	// DebugInfoDirectories is the list of directories to look for
	// when resolving external debug info files.
	DebugInfoDirectories []string

	// CheckGoVersion is true if the debugger should check the version of Go
	// used to compile the executable and refuse to work on incompatible
	// versions.
	CheckGoVersion bool
}

Config provides the configuration to start a Debugger.

Only one of ProcessArgs or AttachPid should be specified. If ProcessArgs is provided, a new process will be launched. Otherwise, the debugger will try to attach to an existing process with AttachPid.

type Debugger 

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

Debugger service.

Debugger provides a higher level of abstraction over proc.Process. It handles converting from internal types to the types expected by clients. It also handles functionality needed by clients, but not needed in lower lever packages such as proc.

func New 

func New(config *Config, processArgs []string) (*Debugger, error)

New creates a new Debugger. ProcessArgs specify the commandline arguments for the new process.

func (*Debugger) AmendBreakpoint 

func (d *Debugger) AmendBreakpoint(amend *api.Breakpoint) error

AmendBreakpoint will update the breakpoint with the matching ID.

func (*Debugger) Ancestors 

func (d *Debugger) Ancestors(goroutineID, numAncestors, depth int) ([]api.Ancestor, error)

Ancestors returns the stacktraces for the ancestors of a goroutine.

func (*Debugger) Attach 

func (d *Debugger) Attach(pid int, path string) (*proc.Target, error)

Attach will attach to the process specified by 'pid'.

func (*Debugger) Breakpoints 

func (d *Debugger) Breakpoints() []*api.Breakpoint

Breakpoints returns the list of current breakpoints.

func (*Debugger) CancelNext 

func (d *Debugger) CancelNext() error

CancelNext will clear internal breakpoints, thus cancelling the 'next', 'step' or 'stepout' operation.

func (*Debugger) Checkpoint 

func (d *Debugger) Checkpoint(where string) (int, error)

Checkpoint will set a checkpoint specified by the locspec.

func (*Debugger) Checkpoints 

func (d *Debugger) Checkpoints() ([]api.Checkpoint, error)

Checkpoints will return a list of checkpoints.

func (*Debugger) ClearBreakpoint 

func (d *Debugger) ClearBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error)

ClearBreakpoint clears a breakpoint.

func (*Debugger) ClearCheckpoint 

func (d *Debugger) ClearCheckpoint(id int) error

ClearCheckpoint will clear the checkpoint of the given ID.

func (*Debugger) Command 

func (d *Debugger) Command(command *api.DebuggerCommand) (*api.DebuggerState, error)

Command handles commands which control the debugger lifecycle

func (*Debugger) CreateBreakpoint 

func (d *Debugger) CreateBreakpoint(requestedBp *api.Breakpoint) (*api.Breakpoint, error)

CreateBreakpoint creates a breakpoint.

func (*Debugger) Detach 

func (d *Debugger) Detach(kill bool) error

Detach detaches from the target process. If `kill` is true we will kill the process after detaching.

func (*Debugger) Disassemble 

func (d *Debugger) Disassemble(goroutineID int, addr1, addr2 uint64, flavour api.AssemblyFlavour) (api.AsmInstructions, error)

Disassemble code between startPC and endPC. if endPC == 0 it will find the function containing startPC and disassemble the whole function.

func (*Debugger) EvalVariableInScope 

func (d *Debugger) EvalVariableInScope(scope api.EvalScope, symbol string, cfg proc.LoadConfig) (*api.Variable, error)

EvalVariableInScope will attempt to evaluate the variable represented by 'symbol' in the scope provided.

func (*Debugger) ExamineMemory 

func (d *Debugger) ExamineMemory(address uintptr, length int) ([]byte, error)

ExamineMemory returns the raw memory stored at the given address. The amount of data to be read is specified by length. This function will return an error if it reads less than `length` bytes.

func (*Debugger) FindBreakpoint 

func (d *Debugger) FindBreakpoint(id int) *api.Breakpoint

FindBreakpoint returns the breakpoint specified by 'id'.

func (*Debugger) FindBreakpointByName 

func (d *Debugger) FindBreakpointByName(name string) *api.Breakpoint

FindBreakpointByName returns the breakpoint specified by 'name'

func (*Debugger) FindLocation 

func (d *Debugger) FindLocation(scope api.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

FindLocation will find the location specified by 'locStr'.

func (*Debugger) FindThread 

func (d *Debugger) FindThread(id int) (*api.Thread, error)

FindThread returns the thread for the given 'id'.

func (*Debugger) FunctionArguments 

func (d *Debugger) FunctionArguments(scope api.EvalScope, cfg proc.LoadConfig) ([]api.Variable, error)

FunctionArguments returns the arguments to the current function.

func (*Debugger) FunctionReturnLocations 

func (d *Debugger) FunctionReturnLocations(fnName string) ([]uint64, error)

FunctionReturnLocations returns all return locations for the given function, a list of addresses corresponding to 'ret' or 'call runtime.deferreturn'.

func (*Debugger) Functions 

func (d *Debugger) Functions(filter string) ([]string, error)

Functions returns a list of functions in the target process.

func (*Debugger) GetVersion 

func (d *Debugger) GetVersion(out *api.GetVersionOut) error

func (*Debugger) Goroutines 

func (d *Debugger) Goroutines(start, count int) ([]*api.Goroutine, int, error)

Goroutines will return a list of goroutines in the target process.

func (*Debugger) LastModified 

func (d *Debugger) LastModified() time.Time

LastModified returns the time that the process' executable was last modified.

func (*Debugger) Launch 

func (d *Debugger) Launch(processArgs []string, wd string) (*proc.Target, error)

Launch will start a process with the given args and working directory.

func (*Debugger) ListDynamicLibraries 

func (d *Debugger) ListDynamicLibraries() []api.Image

ListDynamicLibraries returns a list of loaded dynamic libraries.

func (*Debugger) ListPackagesBuildInfo 

func (d *Debugger) ListPackagesBuildInfo(includeFiles bool) []api.PackageBuildInfo

ListPackagesBuildInfo returns the list of packages used by the program along with the directory where each package was compiled and optionally the list of files constituting the package.

func (*Debugger) LocalVariables 

func (d *Debugger) LocalVariables(scope api.EvalScope, cfg proc.LoadConfig) ([]api.Variable, error)

LocalVariables returns a list of the local variables.

func (*Debugger) PackageVariables 

func (d *Debugger) PackageVariables(threadID int, filter string, cfg proc.LoadConfig) ([]api.Variable, error)

PackageVariables returns a list of package variables for the thread, optionally regexp filtered using regexp described in 'filter'.

func (*Debugger) ProcessPid 

func (d *Debugger) ProcessPid() int

ProcessPid returns the PID of the process the debugger is debugging.

func (*Debugger) Recorded 

func (d *Debugger) Recorded() (recorded bool, tracedir string)

Recorded returns true if the target is a recording.

func (*Debugger) Registers 

func (d *Debugger) Registers(threadID int, scope *api.EvalScope, floatingPoint bool) (api.Registers, error)

Registers returns string representation of the CPU registers.

func (*Debugger) Restart 

func (d *Debugger) Restart(rerecord bool, pos string, resetArgs bool, newArgs []string) ([]api.DiscardedBreakpoint, error)

Restart will restart the target process, first killing and then exec'ing it again. If the target process is a recording it will restart it from the given position. If pos starts with 'c' it's a checkpoint ID, otherwise it's an event number. If resetArgs is true, newArgs will replace the process args.

func (*Debugger) SetVariableInScope 

func (d *Debugger) SetVariableInScope(scope api.EvalScope, symbol, value string) error

SetVariableInScope will set the value of the variable represented by 'symbol' to the value given, in the given scope.

func (*Debugger) Sources 

func (d *Debugger) Sources(filter string) ([]string, error)

Sources returns a list of the source files for target binary.

func (*Debugger) Stacktrace 

func (d *Debugger) Stacktrace(goroutineID, depth int, opts api.StacktraceOptions, cfg *proc.LoadConfig) ([]api.Stackframe, error)

Stacktrace returns a list of Stackframes for the given goroutine. The length of the returned list will be min(stack_len, depth). If 'full' is true, then local vars, function args, etc will be returned as well.

func (*Debugger) State 

func (d *Debugger) State(nowait bool) (*api.DebuggerState, error)

State returns the current state of the debugger.

func (*Debugger) StopRecording 

func (d *Debugger) StopRecording() error

StopRecording stops a recording (if one is in progress)

func (*Debugger) Threads 

func (d *Debugger) Threads() ([]*api.Thread, error)

Threads returns the threads of the target process.

func (*Debugger) Types 

func (d *Debugger) Types(filter string) ([]string, error)

Types returns all type information in the binary.

type FuncLocationSpec 

type FuncLocationSpec struct {
	PackageName           string
	AbsolutePackage       bool
	ReceiverName          string
	PackageOrReceiverName string
	BaseName              string
}

func (*FuncLocationSpec) Match 

func (spec *FuncLocationSpec) Match(sym proc.Function, packageMap map[string][]string) bool

type LineLocationSpec 

type LineLocationSpec struct {
	Line int
}

func (*LineLocationSpec) Find 

func (loc *LineLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

type LocationSpec 

type LocationSpec interface {
	Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)
}

type NormalLocationSpec 

type NormalLocationSpec struct {
	Base       string
	FuncBase   *FuncLocationSpec
	LineOffset int
}

func (*NormalLocationSpec) FileMatch 

func (loc *NormalLocationSpec) FileMatch(path string) bool

func (*NormalLocationSpec) Find 

func (loc *NormalLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

type OffsetLocationSpec 

type OffsetLocationSpec struct {
	Offset int
}

func (*OffsetLocationSpec) Find 

func (loc *OffsetLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

type RegexLocationSpec 

type RegexLocationSpec struct {
	FuncRegex string
}

func (*RegexLocationSpec) Find 

func (loc *RegexLocationSpec) Find(d *Debugger, scope *proc.EvalScope, locStr string, includeNonExecutableLines bool) ([]api.Location, error)

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