9f97edb0bb
* proc,proc/*: move SelectedGoroutine to proc.Target, remove PostInitializationSetup moves SelectedGoroutine, SwitchThread and SwitchGoroutine to proc.Target, merges PostInitializationSetup with NewTarget. * proc,proc/*: add StopReason field to Target Adds a StopReason field to the Target object describing why the target process is currently stopped. This will be useful for the DAP server (which needs to report this reason in one of its requests) as well as making pull request #1785 (reverse step) conformant to the new architecture. * proc: collect NewTarget arguments into a struct
110 lines
3.5 KiB
Go
110 lines
3.5 KiB
Go
package proc
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import (
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"go/ast"
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)
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// Process represents the target of the debugger. This
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// target could be a system process, core file, etc.
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//
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// Implementations of Process are not required to be thread safe and users
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// of Process should not assume they are.
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// There is one exception to this rule: it is safe to call RequestManualStop
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// concurrently with ContinueOnce.
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type Process interface {
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Info
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ProcessManipulation
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BreakpointManipulation
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RecordingManipulation
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}
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// ProcessInternal holds a set of methods that are not meant to be called by
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// anyone except for an instance of `proc.Target`. These methods are not
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// safe to use by themselves and should never be called directly outside of
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// the `proc` package.
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// This is temporary and in support of an ongoing refactor.
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type ProcessInternal interface {
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SetCurrentThread(Thread)
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// Restart restarts the recording from the specified position, or from the
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// last checkpoint if pos == "".
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// If pos starts with 'c' it's a checkpoint ID, otherwise it's an event
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// number.
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Restart(pos string) error
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Detach(bool) error
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ContinueOnce() (trapthread Thread, stopReason StopReason, err error)
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}
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// RecordingManipulation is an interface for manipulating process recordings.
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type RecordingManipulation interface {
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// Recorded returns true if the current process is a recording and the path
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// to the trace directory.
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Recorded() (recorded bool, tracedir string)
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// Direction changes execution direction.
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Direction(Direction) error
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// When returns current recording position.
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When() (string, error)
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// Checkpoint sets a checkpoint at the current position.
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Checkpoint(where string) (id int, err error)
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// Checkpoints returns the list of currently set checkpoint.
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Checkpoints() ([]Checkpoint, error)
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// ClearCheckpoint removes a checkpoint.
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ClearCheckpoint(id int) error
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}
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// Direction is the direction of execution for the target process.
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type Direction int8
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const (
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// Forward direction executes the target normally.
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Forward Direction = 0
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// Backward direction executes the target in reverse.
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Backward Direction = 1
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)
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// Checkpoint is a checkpoint
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type Checkpoint struct {
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ID int
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When string
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Where string
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}
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// Info is an interface that provides general information on the target.
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type Info interface {
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Pid() int
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// ResumeNotify specifies a channel that will be closed the next time
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// ContinueOnce finishes resuming the target.
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ResumeNotify(chan<- struct{})
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// Valid returns true if this Process can be used. When it returns false it
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// also returns an error describing why the Process is invalid (either
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// ErrProcessExited or ProcessDetachedError).
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Valid() (bool, error)
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BinInfo() *BinaryInfo
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EntryPoint() (uint64, error)
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ThreadInfo
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}
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// ThreadInfo is an interface for getting information on active threads
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// in the process.
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type ThreadInfo interface {
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FindThread(threadID int) (Thread, bool)
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ThreadList() []Thread
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CurrentThread() Thread
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}
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// ProcessManipulation is an interface for changing the execution state of a process.
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type ProcessManipulation interface {
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RequestManualStop() error
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// CheckAndClearManualStopRequest returns true the first time it's called
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// after a call to RequestManualStop.
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CheckAndClearManualStopRequest() bool
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}
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// BreakpointManipulation is an interface for managing breakpoints.
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type BreakpointManipulation interface {
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Breakpoints() *BreakpointMap
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SetBreakpoint(addr uint64, kind BreakpointKind, cond ast.Expr) (*Breakpoint, error)
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ClearBreakpoint(addr uint64) (*Breakpoint, error)
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ClearInternalBreakpoints() error
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}
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