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Make stop causes pointers so users outside the package can

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type switch on them despite their private fields.  Add some
tracing stuff.

R=rsc
APPROVED=rsc
DELTA=18  (7 added, 0 deleted, 11 changed)
OCL=33678
CL=33683
This commit is contained in:
Austin Clements 2009-08-21 15:54:54 -07:00
parent 8bbe748b84
commit 1068bcab96
2 changed files with 18 additions and 11 deletions
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14
usr/austin/ptrace/process.go
View File

@ -179,11 +179,11 @@ type ThreadCreate struct {
thread Thread;
}
func (c ThreadCreate) NewThread() Thread {
func (c *ThreadCreate) NewThread() Thread {
return c.thread;
}
func (c ThreadCreate) String() string {
func (c *ThreadCreate) String() string {
return "thread create";
}
@ -197,28 +197,28 @@ type ThreadExit struct {
}
// Exited returns true if the thread exited normally.
func (c ThreadExit) Exited() bool {
func (c *ThreadExit) Exited() bool {
return c.exitStatus != -1;
}
// ExitStatus returns the exit status of the thread if it exited
// normally or -1 otherwise.
func (c ThreadExit) ExitStatus() int {
func (c *ThreadExit) ExitStatus() int {
return c.exitStatus;
}
// Signaled returns true if the thread was terminated by a signal.
func (c ThreadExit) Signaled() bool {
func (c *ThreadExit) Signaled() bool {
return c.exitStatus == -1;
}
// StopSignal returns the signal that terminated the thread, or "" if
// it was not terminated by a signal.
func (c ThreadExit) StopSignal() string {
func (c *ThreadExit) StopSignal() string {
return c.signal;
}
func (c ThreadExit) String() string {
func (c *ThreadExit) String() string {
res := "thread exited ";
switch {
case c.Exited():

15
usr/austin/ptrace/ptrace_linux.go
View File

@ -33,8 +33,9 @@ import (
// as well as experimentation and examination of gdb's behavior.
const (
trace = true;
trace = false;
traceIP = false;
traceMem = false;
)
/*
@ -215,11 +216,17 @@ func (e *newThreadError) String() string {
func (t *thread) ptracePeekText(addr uintptr, out []byte) (int, os.Error) {
c, err := syscall.PtracePeekText(t.tid, addr, out);
if traceMem {
fmt.Printf("peek(%#x) => %v, %v\n", addr, out, err);
}
return c, os.NewSyscallError("ptrace(PEEKTEXT)", err);
}
func (t *thread) ptracePokeText(addr uintptr, out []byte) (int, os.Error) {
c, err := syscall.PtracePokeText(t.tid, addr, out);
if traceMem {
fmt.Printf("poke(%#x, %v) => %v\n", addr, out, err);
}
return c, os.NewSyscallError("ptrace(POKETEXT)", err);
}
@ -889,13 +896,13 @@ func (t *thread) Stopped() (Cause, os.Error) {
c = Signal(sigName(t.signal));
case stoppedThreadCreate:
c = ThreadCreate{t.newThread};
c = &ThreadCreate{t.newThread};
case stoppedExiting, exiting, exited:
if t.signal == -1 {
c = ThreadExit{t.exitStatus, ""};
c = &ThreadExit{t.exitStatus, ""};
} else {
c = ThreadExit{t.exitStatus, sigName(t.signal)};
c = &ThreadExit{t.exitStatus, sigName(t.signal)};
}
default: