/src/mozilla-central/dom/clients/manager/ClientSourceOpChild.cpp

Source (jump to first uncovered line)
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "ClientSourceOpChild.h"

#include "ClientSource.h"
#include "ClientSourceChild.h"
#include "mozilla/Unused.h"

namespace mozilla {
namespace dom {

ClientSource*
ClientSourceOpChild::GetSource() const
{
  auto actor = static_cast<ClientSourceChild*>(Manager());
  return actor->GetSource();
}

template<typename Method, typename Args>
void
ClientSourceOpChild::DoSourceOp(Method aMethod, const Args& aArgs)
{
  RefPtr<ClientOpPromise> promise;
  nsCOMPtr<nsISerialEventTarget> target;

  // Some ClientSource operations can cause the ClientSource to be destroyed.
  // This means we should reference the ClientSource pointer for the minimum
  // possible to start the operation.  Use an extra block scope here to help
  // enforce this and prevent accidental usage later in the method.
  {
    ClientSource* source = GetSource();
    if (!source) {
      Unused << PClientSourceOpChild::Send__delete__(this, NS_ERROR_DOM_ABORT_ERR);
      return;
    }

    target = source->EventTarget();

    // This may cause the ClientSource object to be destroyed.  Do not
    // use the source variable after this call.
    promise = (source->*aMethod)(aArgs);
  }

  // The ClientSource methods are required to always return a promise.  If
  // they encounter an error they should just immediately resolve or reject
  // the promise as appropriate.
  MOZ_DIAGNOSTIC_ASSERT(promise);

  // Capture 'this' is safe here because we disconnect the promise
  // ActorDestroy() which ensures nethier lambda is called if the
  // actor is destroyed before the source operation completes.
  //
  // Also capture the promise to ensure it lives until we get a reaction
  // or the actor starts shutting down and we disconnect our Thenable.
  // If the ClientSource is doing something async it may throw away the
  // promise on its side if the global is closed.
  promise->Then(target, __func__,
    [this, promise] (const mozilla::dom::ClientOpResult& aResult) {
      mPromiseRequestHolder.Complete();
      Unused << PClientSourceOpChild::Send__delete__(this, aResult);
    },
    [this, promise] (nsresult aRv) {
      mPromiseRequestHolder.Complete();
      Unused << PClientSourceOpChild::Send__delete__(this, aRv);
    })->Track(mPromiseRequestHolder);
}

void
ClientSourceOpChild::ActorDestroy(ActorDestroyReason aReason)
{
  mPromiseRequestHolder.DisconnectIfExists();
}

void
ClientSourceOpChild::Init(const ClientOpConstructorArgs& aArgs)
{
  switch (aArgs.type()) {
    case ClientOpConstructorArgs::TClientControlledArgs:
    {
      DoSourceOp(&ClientSource::Control, aArgs.get_ClientControlledArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientFocusArgs:
    {
      DoSourceOp(&ClientSource::Focus, aArgs.get_ClientFocusArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientPostMessageArgs:
    {
      DoSourceOp(&ClientSource::PostMessage, aArgs.get_ClientPostMessageArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientClaimArgs:
    {
      DoSourceOp(&ClientSource::Claim, aArgs.get_ClientClaimArgs());
      break;
    }
    case ClientOpConstructorArgs::TClientGetInfoAndStateArgs:
    {
      DoSourceOp(&ClientSource::GetInfoAndState,
                 aArgs.get_ClientGetInfoAndStateArgs());
      break;
    }
    default:
    {
      MOZ_ASSERT_UNREACHABLE("unknown client operation!");
      break;
    }
  }
}

} // namespace dom
} // namespace mozilla

Line	Count	Source (jump to first uncovered line)
1		/* -- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -- */
2		/* vim: set ts=8 sts=2 et sw=2 tw=80: */
3		/* This Source Code Form is subject to the terms of the Mozilla Public
4		* License, v. 2.0. If a copy of the MPL was not distributed with this
5		* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7		#include "ClientSourceOpChild.h"
8
9		#include "ClientSource.h"
10		#include "ClientSourceChild.h"
11		#include "mozilla/Unused.h"
12
13		namespace mozilla {
14		namespace dom {
15
16		ClientSource*
17		ClientSourceOpChild::GetSource() const
18	0	{
19	0	auto actor = static_cast<ClientSourceChild*>(Manager());
20	0	return actor->GetSource();
21	0	}
22
23		template<typename Method, typename Args>
24		void
25		ClientSourceOpChild::DoSourceOp(Method aMethod, const Args& aArgs)
26	0	{
27	0	RefPtr<ClientOpPromise> promise;
28	0	nsCOMPtr<nsISerialEventTarget> target;
29	0
30	0	// Some ClientSource operations can cause the ClientSource to be destroyed.
31	0	// This means we should reference the ClientSource pointer for the minimum
32	0	// possible to start the operation. Use an extra block scope here to help
33	0	// enforce this and prevent accidental usage later in the method.
34	0	{
35	0	ClientSource* source = GetSource();
36	0	if (!source) {
37	0	Unused << PClientSourceOpChild::Send__delete__(this, NS_ERROR_DOM_ABORT_ERR);
38	0	return;
39	0	}
40	0
41	0	target = source->EventTarget();
42	0
43	0	// This may cause the ClientSource object to be destroyed. Do not
44	0	// use the source variable after this call.
45	0	promise = (source->*aMethod)(aArgs);
46	0	}
47	0
48	0	// The ClientSource methods are required to always return a promise. If
49	0	// they encounter an error they should just immediately resolve or reject
50	0	// the promise as appropriate.
51	0	MOZ_DIAGNOSTIC_ASSERT(promise);
52	0
53	0	// Capture 'this' is safe here because we disconnect the promise
54	0	// ActorDestroy() which ensures nethier lambda is called if the
55	0	// actor is destroyed before the source operation completes.
56	0	//
57	0	// Also capture the promise to ensure it lives until we get a reaction
58	0	// or the actor starts shutting down and we disconnect our Thenable.
59	0	// If the ClientSource is doing something async it may throw away the
60	0	// promise on its side if the global is closed.
61	0	promise->Then(target, __func__,
62	0	[this, promise] (const mozilla::dom::ClientOpResult& aResult) {
63	0	mPromiseRequestHolder.Complete();
64	0	Unused << PClientSourceOpChild::Send__delete__(this, aResult);
65	0	}, Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs const&)::{lambda(mozilla::dom::ClientOpResult const&)#1}::operator()(mozilla::dom::ClientOpResult const&) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs const&)::{lambda(mozilla::dom::ClientOpResult const&)#1}::operator()(mozilla::dom::ClientOpResult const&) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs const&)::{lambda(mozilla::dom::ClientOpResult const&)#1}::operator()(mozilla::dom::ClientOpResult const&) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs const&)::{lambda(mozilla::dom::ClientOpResult const&)#1}::operator()(mozilla::dom::ClientOpResult const&) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs const&)::{lambda(mozilla::dom::ClientOpResult const&)#1}::operator()(mozilla::dom::ClientOpResult const&) const
66	0	[this, promise] (nsresult aRv) {
67	0	mPromiseRequestHolder.Complete();
68	0	Unused << PClientSourceOpChild::Send__delete__(this, aRv);
69	0	})->Track(mPromiseRequestHolder); Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs const&)::{lambda(nsresult)#1}::operator()(nsresult) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs const&)::{lambda(nsresult)#1}::operator()(nsresult) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs const&)::{lambda(nsresult)#1}::operator()(nsresult) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs const&)::{lambda(nsresult)#1}::operator()(nsresult) const Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs const&)::{lambda(nsresult)#1}::operator()(nsresult) const
70	0	} Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientControlledArgs const&), mozilla::dom::ClientControlledArgs const&) Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientFocusArgs const&), mozilla::dom::ClientFocusArgs const&) Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientPostMessageArgs const&), mozilla::dom::ClientPostMessageArgs const&) Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientClaimArgs const&), mozilla::dom::ClientClaimArgs const&) Unexecuted instantiation: void mozilla::dom::ClientSourceOpChild::DoSourceOp<RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs>(RefPtr<mozilla::MozPromise<mozilla::dom::ClientOpResult, nsresult, false> > (mozilla::dom::ClientSource::)(mozilla::dom::ClientGetInfoAndStateArgs const&), mozilla::dom::ClientGetInfoAndStateArgs const&)
71
72		void
73		ClientSourceOpChild::ActorDestroy(ActorDestroyReason aReason)
74	0	{
75	0	mPromiseRequestHolder.DisconnectIfExists();
76	0	}
77
78		void
79		ClientSourceOpChild::Init(const ClientOpConstructorArgs& aArgs)
80	0	{
81	0	switch (aArgs.type()) {
82	0	case ClientOpConstructorArgs::TClientControlledArgs:
83	0	{
84	0	DoSourceOp(&ClientSource::Control, aArgs.get_ClientControlledArgs());
85	0	break;
86	0	}
87	0	case ClientOpConstructorArgs::TClientFocusArgs:
88	0	{
89	0	DoSourceOp(&ClientSource::Focus, aArgs.get_ClientFocusArgs());
90	0	break;
91	0	}
92	0	case ClientOpConstructorArgs::TClientPostMessageArgs:
93	0	{
94	0	DoSourceOp(&ClientSource::PostMessage, aArgs.get_ClientPostMessageArgs());
95	0	break;
96	0	}
97	0	case ClientOpConstructorArgs::TClientClaimArgs:
98	0	{
99	0	DoSourceOp(&ClientSource::Claim, aArgs.get_ClientClaimArgs());
100	0	break;
101	0	}
102	0	case ClientOpConstructorArgs::TClientGetInfoAndStateArgs:
103	0	{
104	0	DoSourceOp(&ClientSource::GetInfoAndState,
105	0	aArgs.get_ClientGetInfoAndStateArgs());
106	0	break;
107	0	}
108	0	default:
109	0	{
110	0	MOZ_ASSERT_UNREACHABLE("unknown client operation!");
111	0	break;
112	0	}
113	0	}
114	0	}
115
116		} // namespace dom
117		} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53