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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_STRONG_BINDING_SET_H_ | |
6 #define MOJO_PUBLIC_CPP_BINDINGS_STRONG_BINDING_SET_H_ | |
7 | |
8 #include <assert.h> | |
9 | |
10 #include <algorithm> | |
11 #include <memory> | |
12 #include <vector> | |
13 | |
14 #include "mojo/public/cpp/bindings/binding.h" | |
15 #include "mojo/public/cpp/system/macros.h" | |
16 | |
17 namespace mojo { | |
18 | |
19 // Use this class to manage a set of strong bindings each of which is | |
20 // owned by the pipe it is bound to. The set takes ownership of the | |
21 // interfaces and will delete them when the bindings are closed. | |
22 template <typename Interface> | |
23 class StrongBindingSet { | |
24 public: | |
25 StrongBindingSet() {} | |
26 ~StrongBindingSet() { CloseAllBindings(); } | |
27 | |
28 // Adds a binding to the list and arranges for it to be removed when | |
29 // a connection error occurs. Takes ownership of |impl|, which | |
30 // will be deleted when the binding is closed. | |
31 void AddBinding(Interface* impl, InterfaceRequest<Interface> request) { | |
32 bindings_.emplace_back(new Binding<Interface>(impl, request.Pass())); | |
33 auto* binding = bindings_.back().get(); | |
34 // Set the connection error handler for the newly added Binding to be a | |
35 // function that will erase it from the vector. | |
36 binding->set_connection_error_handler([this, binding]() { | |
37 auto it = | |
38 std::find_if(bindings_.begin(), bindings_.end(), | |
39 [binding](const std::unique_ptr<Binding<Interface>>& b) { | |
40 return (b.get() == binding); | |
41 }); | |
42 assert(it != bindings_.end()); | |
43 delete binding->impl(); | |
44 bindings_.erase(it); | |
45 }); | |
46 } | |
47 | |
48 // Removes all bindings for the specified interface implementation. | |
49 // The implementation object is not destroyed. | |
50 void RemoveBindings(Interface* impl) { | |
51 bindings_.erase( | |
52 std::remove_if(bindings_.begin(), bindings_.end(), | |
53 [impl](const std::unique_ptr<Binding<Interface>>& b) { | |
54 return (b->impl() == impl); | |
55 })); | |
56 } | |
57 | |
58 // Closes all bindings and deletes their associated interfaces. | |
59 void CloseAllBindings() { | |
60 for (auto it = bindings_.begin(); it != bindings_.end(); ++it) { | |
61 delete (*it)->impl(); | |
62 } | |
63 bindings_.clear(); | |
64 } | |
65 | |
66 size_t size() const { return bindings_.size(); } | |
67 | |
68 private: | |
69 std::vector<std::unique_ptr<Binding<Interface>>> bindings_; | |
70 | |
71 MOJO_DISALLOW_COPY_AND_ASSIGN(StrongBindingSet); | |
72 }; | |
73 | |
74 } // namespace mojo | |
75 | |
76 #endif // MOJO_PUBLIC_CPP_BINDINGS_STRONG_BINDING_SET_H_ | |
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