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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
11 #include "webrtc/test/fake_network_pipe.h" | 11 #include "webrtc/test/fake_network_pipe.h" |
12 | 12 |
13 #include <assert.h> | 13 #include <assert.h> |
14 #include <math.h> | 14 #include <math.h> |
15 #include <string.h> | 15 #include <string.h> |
16 | 16 |
17 #include <algorithm> | 17 #include <algorithm> |
18 #include <cmath> | 18 #include <cmath> |
19 | 19 |
| 20 #include "webrtc/base/logging.h" |
20 #include "webrtc/call/call.h" | 21 #include "webrtc/call/call.h" |
21 #include "webrtc/system_wrappers/include/clock.h" | 22 #include "webrtc/system_wrappers/include/clock.h" |
22 | 23 |
23 namespace webrtc { | 24 namespace webrtc { |
24 | 25 |
25 FakeNetworkPipe::FakeNetworkPipe(Clock* clock, | 26 FakeNetworkPipe::FakeNetworkPipe(Clock* clock, |
26 const FakeNetworkPipe::Config& config) | 27 const FakeNetworkPipe::Config& config) |
27 : FakeNetworkPipe(clock, config, 1) {} | 28 : FakeNetworkPipe(clock, config, 1) {} |
28 | 29 |
29 FakeNetworkPipe::FakeNetworkPipe(Clock* clock, | 30 FakeNetworkPipe::FakeNetworkPipe(Clock* clock, |
30 const FakeNetworkPipe::Config& config, | 31 const FakeNetworkPipe::Config& config, |
31 uint64_t seed) | 32 uint64_t seed) |
32 : clock_(clock), | 33 : clock_(clock), |
33 packet_receiver_(NULL), | 34 packet_receiver_(NULL), |
34 random_(seed), | 35 random_(seed), |
35 config_(config), | 36 config_(config), |
36 dropped_packets_(0), | 37 dropped_packets_(0), |
37 sent_packets_(0), | 38 sent_packets_(0), |
38 total_packet_delay_(0), | 39 total_packet_delay_(0), |
39 bursting_(false), | 40 bursting_(false), |
40 next_process_time_(clock_->TimeInMilliseconds()) { | 41 next_process_time_(clock_->TimeInMilliseconds()), |
| 42 last_log_time_(clock_->TimeInMilliseconds()) { |
41 double prob_loss = config.loss_percent / 100.0; | 43 double prob_loss = config.loss_percent / 100.0; |
42 if (config_.avg_burst_loss_length == -1) { | 44 if (config_.avg_burst_loss_length == -1) { |
43 // Uniform loss | 45 // Uniform loss |
44 prob_loss_bursting_ = prob_loss; | 46 prob_loss_bursting_ = prob_loss; |
45 prob_start_bursting_ = prob_loss; | 47 prob_start_bursting_ = prob_loss; |
46 } else { | 48 } else { |
47 // Lose packets according to a gilbert-elliot model. | 49 // Lose packets according to a gilbert-elliot model. |
48 int avg_burst_loss_length = config.avg_burst_loss_length; | 50 int avg_burst_loss_length = config.avg_burst_loss_length; |
49 int min_avg_burst_loss_length = std::ceil(prob_loss / (1 - prob_loss)); | 51 int min_avg_burst_loss_length = std::ceil(prob_loss / (1 - prob_loss)); |
50 | 52 |
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127 | 129 |
128 return static_cast<int>(total_packet_delay_ / | 130 return static_cast<int>(total_packet_delay_ / |
129 static_cast<int64_t>(sent_packets_)); | 131 static_cast<int64_t>(sent_packets_)); |
130 } | 132 } |
131 | 133 |
132 void FakeNetworkPipe::Process() { | 134 void FakeNetworkPipe::Process() { |
133 int64_t time_now = clock_->TimeInMilliseconds(); | 135 int64_t time_now = clock_->TimeInMilliseconds(); |
134 std::queue<NetworkPacket*> packets_to_deliver; | 136 std::queue<NetworkPacket*> packets_to_deliver; |
135 { | 137 { |
136 rtc::CritScope crit(&lock_); | 138 rtc::CritScope crit(&lock_); |
| 139 if (time_now - last_log_time_ > 5000) { |
| 140 int64_t queueing_delay_ms = 0; |
| 141 if (!capacity_link_.empty()) { |
| 142 queueing_delay_ms = time_now - capacity_link_.front()->send_time(); |
| 143 } |
| 144 LOG(LS_INFO) << "Network queue: " << queueing_delay_ms << " ms."; |
| 145 last_log_time_ = time_now; |
| 146 } |
137 // Check the capacity link first. | 147 // Check the capacity link first. |
138 while (!capacity_link_.empty() && | 148 while (!capacity_link_.empty() && |
139 time_now >= capacity_link_.front()->arrival_time()) { | 149 time_now >= capacity_link_.front()->arrival_time()) { |
140 // Time to get this packet. | 150 // Time to get this packet. |
141 NetworkPacket* packet = capacity_link_.front(); | 151 NetworkPacket* packet = capacity_link_.front(); |
142 capacity_link_.pop(); | 152 capacity_link_.pop(); |
143 | 153 |
144 // Drop packets at an average rate of |config_.loss_percent| with | 154 // Drop packets at an average rate of |config_.loss_percent| with |
145 // and average loss burst length of |config_.avg_burst_loss_length|. | 155 // and average loss burst length of |config_.avg_burst_loss_length|. |
146 if ((bursting_ && random_.Rand<double>() < prob_loss_bursting_) || | 156 if ((bursting_ && random_.Rand<double>() < prob_loss_bursting_) || |
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195 int64_t FakeNetworkPipe::TimeUntilNextProcess() const { | 205 int64_t FakeNetworkPipe::TimeUntilNextProcess() const { |
196 rtc::CritScope crit(&lock_); | 206 rtc::CritScope crit(&lock_); |
197 const int64_t kDefaultProcessIntervalMs = 5; | 207 const int64_t kDefaultProcessIntervalMs = 5; |
198 if (capacity_link_.empty() || delay_link_.empty()) | 208 if (capacity_link_.empty() || delay_link_.empty()) |
199 return kDefaultProcessIntervalMs; | 209 return kDefaultProcessIntervalMs; |
200 return std::max<int64_t>(next_process_time_ - clock_->TimeInMilliseconds(), | 210 return std::max<int64_t>(next_process_time_ - clock_->TimeInMilliseconds(), |
201 0); | 211 0); |
202 } | 212 } |
203 | 213 |
204 } // namespace webrtc | 214 } // namespace webrtc |
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