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Side by Side Diff: ipc/attachment_broker.h

Issue 1554443003: Stop linking in the old Mojo EDK. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: merge and fix new flaky test Created 4 years, 11 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef IPC_ATTACHMENT_BROKER_H_ 5 #ifndef IPC_ATTACHMENT_BROKER_H_
6 #define IPC_ATTACHMENT_BROKER_H_ 6 #define IPC_ATTACHMENT_BROKER_H_
7 7
8 #include "base/gtest_prod_util.h" 8 #include "base/gtest_prod_util.h"
9 #include "base/macros.h" 9 #include "base/macros.h"
10 #include "base/memory/ref_counted.h" 10 #include "base/memory/ref_counted.h"
11 #include "base/process/process_handle.h" 11 #include "base/process/process_handle.h"
12 #include "base/synchronization/lock.h" 12 #include "base/synchronization/lock.h"
13 #include "build/build_config.h" 13 #include "build/build_config.h"
14 #include "ipc/brokerable_attachment.h" 14 #include "ipc/brokerable_attachment.h"
15 #include "ipc/ipc_export.h" 15 #include "ipc/ipc_export.h"
16 #include "ipc/ipc_listener.h" 16 #include "ipc/ipc_listener.h"
17 17
18 // If the platform has no attachments that need brokering, then it shouldn't 18 // If the platform has no attachments that need brokering, then it shouldn't
19 // compile any code that calls member functions of AttachmentBroker. This 19 // compile any code that calls member functions of AttachmentBroker. This
20 // prevents symbols only used by AttachmentBroker and its subclasses from 20 // prevents symbols only used by AttachmentBroker and its subclasses from
21 // making it into the binary. 21 // making it into the binary.
22 #if defined(OS_WIN) || (defined(OS_MACOSX) && !defined(OS_IOS)) 22 #if defined(OS_WIN) || (defined(OS_MACOSX) && !defined(OS_IOS))
23 #define USE_ATTACHMENT_BROKER 1 23 #define USE_ATTACHMENT_BROKER 1
24 #else 24 #else
25 #define USE_ATTACHMENT_BROKER 0 25 #define USE_ATTACHMENT_BROKER 0
26 #endif // defined(OS_WIN) 26 #endif // defined(OS_WIN)
27 27
28 namespace base { 28 namespace base {
29 class SequencedTaskRunner; 29 class TaskRunner;
30 }; 30 };
31 31
32 namespace IPC { 32 namespace IPC {
33 33
34 class AttachmentBroker; 34 class AttachmentBroker;
35 class Endpoint; 35 class Endpoint;
36 36
37 // Classes that inherit from this abstract base class are capable of 37 // Classes that inherit from this abstract base class are capable of
38 // communicating with a broker to send and receive attachments to Chrome IPC 38 // communicating with a broker to send and receive attachments to Chrome IPC
39 // messages. 39 // messages.
(...skipping 38 matching lines...) Expand 10 before | Expand all | Expand 10 after
78 78
79 // Returns whether the attachment was available. If the attachment was 79 // Returns whether the attachment was available. If the attachment was
80 // available, populates the output parameter |attachment|. 80 // available, populates the output parameter |attachment|.
81 bool GetAttachmentWithId(BrokerableAttachment::AttachmentId id, 81 bool GetAttachmentWithId(BrokerableAttachment::AttachmentId id,
82 scoped_refptr<BrokerableAttachment>* attachment); 82 scoped_refptr<BrokerableAttachment>* attachment);
83 83
84 // Any given observer should only ever add itself once to the observer list. 84 // Any given observer should only ever add itself once to the observer list.
85 // Notifications to |observer| will be posted to |runner|. 85 // Notifications to |observer| will be posted to |runner|.
86 // The |observer| is expected to call RemoveObserver() before being destroyed. 86 // The |observer| is expected to call RemoveObserver() before being destroyed.
87 void AddObserver(Observer* observer, 87 void AddObserver(Observer* observer,
88 const scoped_refptr<base::SequencedTaskRunner>& runner); 88 const scoped_refptr<base::TaskRunner>& runner);
89 void RemoveObserver(Observer* observer); 89 void RemoveObserver(Observer* observer);
90 90
91 // These two methods should only be called by the broker process. 91 // These two methods should only be called by the broker process.
92 // 92 //
93 // Each unprivileged process should have one IPC channel on which it 93 // Each unprivileged process should have one IPC channel on which it
94 // communicates attachment information with the broker process. In the broker 94 // communicates attachment information with the broker process. In the broker
95 // process, these channels must be registered and deregistered with the 95 // process, these channels must be registered and deregistered with the
96 // Attachment Broker as they are created and destroyed. 96 // Attachment Broker as they are created and destroyed.
97 virtual void RegisterCommunicationChannel(Endpoint* endpoint); 97 virtual void RegisterCommunicationChannel(Endpoint* endpoint);
98 virtual void DeregisterCommunicationChannel(Endpoint* endpoint); 98 virtual void DeregisterCommunicationChannel(Endpoint* endpoint);
(...skipping 34 matching lines...) Expand 10 before | Expand all | Expand 10 after
133 AttachmentVector attachments_; 133 AttachmentVector attachments_;
134 134
135 struct ObserverInfo { 135 struct ObserverInfo {
136 ObserverInfo(); 136 ObserverInfo();
137 ~ObserverInfo(); 137 ~ObserverInfo();
138 138
139 Observer* observer; 139 Observer* observer;
140 int unique_id; 140 int unique_id;
141 141
142 // Notifications must be dispatched onto |runner|. 142 // Notifications must be dispatched onto |runner|.
143 scoped_refptr<base::SequencedTaskRunner> runner; 143 scoped_refptr<base::TaskRunner> runner;
144 }; 144 };
145 std::vector<ObserverInfo> observers_; 145 std::vector<ObserverInfo> observers_;
146 146
147 // This member holds the last id given to an ObserverInfo. 147 // This member holds the last id given to an ObserverInfo.
148 int last_unique_id_; 148 int last_unique_id_;
149 149
150 // The AttachmentBroker can be accessed from any thread, so modifications to 150 // The AttachmentBroker can be accessed from any thread, so modifications to
151 // internal state must be guarded by a lock. 151 // internal state must be guarded by a lock.
152 base::Lock lock_; 152 base::Lock lock_;
153 DISALLOW_COPY_AND_ASSIGN(AttachmentBroker); 153 DISALLOW_COPY_AND_ASSIGN(AttachmentBroker);
154 }; 154 };
155 155
156 } // namespace IPC 156 } // namespace IPC
157 157
158 #endif // IPC_ATTACHMENT_BROKER_H_ 158 #endif // IPC_ATTACHMENT_BROKER_H_
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