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proc,service,terminal: read defer list

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Adds -defer flag to the stack command that decorates the stack traces
by associating each stack frame with its deferred calls.

Reworks proc.next to use this feature instead of using proc.DeferPC,
laying the groundwork to implement #1240.
This commit is contained in:
aarzilli
2018-07-06 09:37:31 +02:00
committed by Derek Parker
parent 932aad9e3d
commit 8f1fc63da8
20 changed files with 388 additions and 117 deletions
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17
pkg/proc/threads.go
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@ -79,7 +79,7 @@ func topframe(g *G, thread Thread) (Stackframe, Stackframe, error) {
}
frames, err = ThreadStacktrace(thread, 1)
} else {
frames, err = g.Stacktrace(1)
frames, err = g.Stacktrace(1, true)
}
if err != nil {
return Stackframe{}, Stackframe{}, err
@ -224,15 +224,12 @@ func next(dbp Process, stepInto, inlinedStepOut bool) error {
// Set breakpoint on the most recently deferred function (if any)
var deferpc uint64 = 0
if selg != nil {
deferPCEntry := selg.DeferPC()
if deferPCEntry != 0 {
deferfn := dbp.BinInfo().PCToFunc(deferPCEntry)
var err error
deferpc, err = FirstPCAfterPrologue(dbp, deferfn, false)
if err != nil {
return err
}
if topframe.TopmostDefer != nil && topframe.TopmostDefer.DeferredPC != 0 {
deferfn := dbp.BinInfo().PCToFunc(topframe.TopmostDefer.DeferredPC)
var err error
deferpc, err = FirstPCAfterPrologue(dbp, deferfn, false)
if err != nil {
return err
}
}
if deferpc != 0 && deferpc != topframe.Current.PC {