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Side by Side Diff: net/socket/client_socket_pool_base.h

Issue 6990036: Deciding best connection to schedule requests on based on cwnd and idle time (Closed) Base URL: http://src.chromium.org/svn/trunk/src/
Patch Set: fixing release build policy check Created 9 years, 6 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 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 // A ClientSocketPoolBase is used to restrict the number of sockets open at 5 // A ClientSocketPoolBase is used to restrict the number of sockets open at
6 // a time. It also maintains a list of idle persistent sockets for reuse. 6 // a time. It also maintains a list of idle persistent sockets for reuse.
7 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle 7 // Subclasses of ClientSocketPool should compose ClientSocketPoolBase to handle
8 // the core logic of (1) restricting the number of active (connected or 8 // the core logic of (1) restricting the number of active (connected or
9 // connecting) sockets per "group" (generally speaking, the hostname), (2) 9 // connecting) sockets per "group" (generally speaking, the hostname), (2)
10 // maintaining a per-group list of idle, persistent sockets for reuse, and (3) 10 // maintaining a per-group list of idle, persistent sockets for reuse, and (3)
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43 #include "net/base/net_log.h" 43 #include "net/base/net_log.h"
44 #include "net/base/network_change_notifier.h" 44 #include "net/base/network_change_notifier.h"
45 #include "net/base/request_priority.h" 45 #include "net/base/request_priority.h"
46 #include "net/socket/client_socket_pool.h" 46 #include "net/socket/client_socket_pool.h"
47 #include "net/socket/stream_socket.h" 47 #include "net/socket/stream_socket.h"
48 48
49 namespace net { 49 namespace net {
50 50
51 class ClientSocketHandle; 51 class ClientSocketHandle;
52 52
53 // Returns the client socket reuse policy.
54 NET_API int GetSocketReusePolicy();
willchan no longer on Chromium 2011/06/16 09:52:44 Is this called outside net/? If not, we don't need
Gagan 2011/06/16 11:49:29 Was getting used only in http_stream. Removed NET_
55
56 // Sets the client socket reuse policy.
57 // NOTE: 'policy' should be a valid ClientSocketReusePolicy enum value.
58 NET_API void SetSocketReusePolicy(int policy);
59
53 // ConnectJob provides an abstract interface for "connecting" a socket. 60 // ConnectJob provides an abstract interface for "connecting" a socket.
54 // The connection may involve host resolution, tcp connection, ssl connection, 61 // The connection may involve host resolution, tcp connection, ssl connection,
55 // etc. 62 // etc.
56 class NET_TEST ConnectJob { 63 class NET_TEST ConnectJob {
57 public: 64 public:
58 class NET_TEST Delegate { 65 class NET_TEST Delegate {
59 public: 66 public:
60 Delegate() {} 67 Delegate() {}
61 virtual ~Delegate() {} 68 virtual ~Delegate() {}
62 69
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160 public NetworkChangeNotifier::IPAddressObserver { 167 public NetworkChangeNotifier::IPAddressObserver {
161 public: 168 public:
162 typedef uint32 Flags; 169 typedef uint32 Flags;
163 170
164 // Used to specify specific behavior for the ClientSocketPool. 171 // Used to specify specific behavior for the ClientSocketPool.
165 enum Flag { 172 enum Flag {
166 NORMAL = 0, // Normal behavior. 173 NORMAL = 0, // Normal behavior.
167 NO_IDLE_SOCKETS = 0x1, // Do not return an idle socket. Create a new one. 174 NO_IDLE_SOCKETS = 0x1, // Do not return an idle socket. Create a new one.
168 }; 175 };
169 176
177 enum ClientSocketReusePolicy {
178 // Socket with largest amount of bytes transferred.
179 USE_WARMEST_SOCKET = 0,
180
181 // Socket which scores highest on large bytes transferred and low idle time.
182 USE_WARM_SOCKET = 1,
183
184 // Socket which was most recently used.
185 USE_LAST_ACCESSED_SOCKET = 2,
186 };
187
170 class NET_TEST Request { 188 class NET_TEST Request {
171 public: 189 public:
172 Request(ClientSocketHandle* handle, 190 Request(ClientSocketHandle* handle,
173 CompletionCallback* callback, 191 CompletionCallback* callback,
174 RequestPriority priority, 192 RequestPriority priority,
175 bool ignore_limits, 193 bool ignore_limits,
176 Flags flags, 194 Flags flags,
177 const BoundNetLog& net_log); 195 const BoundNetLog& net_log);
178 196
179 virtual ~Request(); 197 virtual ~Request();
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746 // Histograms for the pool 764 // Histograms for the pool
747 ClientSocketPoolHistograms* const histograms_; 765 ClientSocketPoolHistograms* const histograms_;
748 internal::ClientSocketPoolBaseHelper helper_; 766 internal::ClientSocketPoolBaseHelper helper_;
749 767
750 DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase); 768 DISALLOW_COPY_AND_ASSIGN(ClientSocketPoolBase);
751 }; 769 };
752 770
753 } // namespace net 771 } // namespace net
754 772
755 #endif // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_ 773 #endif // NET_SOCKET_CLIENT_SOCKET_POOL_BASE_H_
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