Add command to print every thread status

command/command.go

@@ -31,6 +31,7 @@ func DebugCommands() *Commands {
 		"step":     step,
 		"clear":    clear,
 		"print":    printVar,
+		"threads":  threads,
 		"":         nullCommand,
 	}
 
@@ -82,6 +83,11 @@ func help(p *proctl.DebuggedProcess, ars ...string) error {
 
 	return nil
 }
+
+func threads(p *proctl.DebuggedProcess, ars ...string) error {
+	return p.PrintThreadInfo()
+}
+
 func cont(p *proctl.DebuggedProcess, ars ...string) error {
 	err := p.Continue()
 	if err != nil {

proctl/proctl_linux_amd64.go

@@ -198,6 +198,15 @@ func (dbp *DebuggedProcess) Status() *syscall.WaitStatus {
 	return dbp.CurrentThread.Status
 }
 
+func (dbp *DebuggedProcess) PrintThreadInfo() error {
+	for _, th := range dbp.Threads {
+		if err := th.PrintInfo(); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 // Finds the executable from /proc/<pid>/exe and then
 // uses that to parse the following information:
 // * Dwarf .debug_frame section

proctl/threads_linux_amd64.go

@@ -48,6 +48,16 @@ func (thread *ThreadContext) CurrentPC() (uint64, error) {
 	return regs.PC(), nil
 }
 
+func (thread *ThreadContext) PrintInfo() error {
+	pc, err := thread.CurrentPC()
+	if err != nil {
+		return err
+	}
+	f, l, fn := thread.Process.GoSymTable.PCToLine(pc)
+	fmt.Printf("Thread %d at %#v %s:%d %s\n", thread.Id, pc, f, l, fn.Name)
+	return nil
+}
+
 // Sets a software breakpoint at addr, and stores it in the process wide
 // break point table. Setting a break point must be thread specific due to
 // ptrace actions needing the thread to be in a signal-delivery-stop in order