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Side by Side Diff: mojo/public/cpp/bindings/strong_binding_set.h

Issue 2250183003: Make the fuchsia mojo/public repo the source of truth. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 4 months ago
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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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