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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 #include "chrome/browser/renderer_host/web_cache_manager.h" | 5 #include "chrome/browser/renderer_host/web_cache_manager.h" |
6 | 6 |
7 #include <algorithm> | 7 #include <algorithm> |
8 | 8 |
9 #include "base/bind.h" | 9 #include "base/bind.h" |
10 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
11 #include "base/memory/singleton.h" | 11 #include "base/memory/singleton.h" |
12 #include "base/message_loop.h" | 12 #include "base/message_loop.h" |
13 #include "base/metrics/histogram.h" | 13 #include "base/metrics/histogram.h" |
14 #include "base/sys_info.h" | 14 #include "base/sys_info.h" |
15 #include "base/time.h" | 15 #include "base/time.h" |
16 #include "chrome/browser/browser_process.h" | 16 #include "chrome/browser/browser_process.h" |
17 #include "chrome/browser/prefs/pref_service.h" | 17 #include "chrome/browser/prefs/pref_service.h" |
18 #include "chrome/common/chrome_constants.h" | 18 #include "chrome/common/chrome_constants.h" |
19 #include "chrome/common/chrome_notification_types.h" | 19 #include "chrome/common/chrome_notification_types.h" |
20 #include "chrome/common/pref_names.h" | 20 #include "chrome/common/pref_names.h" |
21 #include "chrome/common/render_messages.h" | 21 #include "chrome/common/render_messages.h" |
22 #include "content/browser/renderer_host/browser_render_process_host.h" | |
23 #include "content/public/browser/notification_service.h" | 22 #include "content/public/browser/notification_service.h" |
| 23 #include "content/public/browser/render_process_host.h" |
24 | 24 |
25 using base::Time; | 25 using base::Time; |
26 using base::TimeDelta; | 26 using base::TimeDelta; |
27 using WebKit::WebCache; | 27 using WebKit::WebCache; |
28 | 28 |
29 static const unsigned int kReviseAllocationDelayMS = 200 /* milliseconds */; | 29 static const unsigned int kReviseAllocationDelayMS = 200 /* milliseconds */; |
30 | 30 |
31 // The default size limit of the in-memory cache is 8 MB | 31 // The default size limit of the in-memory cache is 8 MB |
32 static const int kDefaultMemoryCacheSize = 8 * 1024 * 1024; | 32 static const int kDefaultMemoryCacheSize = 8 * 1024 * 1024; |
33 | 33 |
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156 // the user navigates to a new website. | 156 // the user navigates to a new website. |
157 ClearRendederCache(active_renderers_, ON_NAVIGATION); | 157 ClearRendederCache(active_renderers_, ON_NAVIGATION); |
158 ClearRendederCache(inactive_renderers_, ON_NAVIGATION); | 158 ClearRendederCache(inactive_renderers_, ON_NAVIGATION); |
159 } | 159 } |
160 | 160 |
161 void WebCacheManager::Observe(int type, | 161 void WebCacheManager::Observe(int type, |
162 const content::NotificationSource& source, | 162 const content::NotificationSource& source, |
163 const content::NotificationDetails& details) { | 163 const content::NotificationDetails& details) { |
164 switch (type) { | 164 switch (type) { |
165 case content::NOTIFICATION_RENDERER_PROCESS_CREATED: { | 165 case content::NOTIFICATION_RENDERER_PROCESS_CREATED: { |
166 RenderProcessHost* process = | 166 content::RenderProcessHost* process = |
167 content::Source<RenderProcessHost>(source).ptr(); | 167 content::Source<content::RenderProcessHost>(source).ptr(); |
168 Add(process->id()); | 168 Add(process->GetID()); |
169 break; | 169 break; |
170 } | 170 } |
171 case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: { | 171 case content::NOTIFICATION_RENDERER_PROCESS_TERMINATED: { |
172 RenderProcessHost* process = | 172 content::RenderProcessHost* process = |
173 content::Source<RenderProcessHost>(source).ptr(); | 173 content::Source<content::RenderProcessHost>(source).ptr(); |
174 Remove(process->id()); | 174 Remove(process->GetID()); |
175 break; | 175 break; |
176 } | 176 } |
177 default: | 177 default: |
178 NOTREACHED(); | 178 NOTREACHED(); |
179 break; | 179 break; |
180 } | 180 } |
181 } | 181 } |
182 | 182 |
183 // static | 183 // static |
184 size_t WebCacheManager::GetDefaultGlobalSizeLimit() { | 184 size_t WebCacheManager::GetDefaultGlobalSizeLimit() { |
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301 // Record the allocation in our strategy. | 301 // Record the allocation in our strategy. |
302 strategy->push_back(Allocation(*iter, cache_size)); | 302 strategy->push_back(Allocation(*iter, cache_size)); |
303 ++iter; | 303 ++iter; |
304 } | 304 } |
305 } | 305 } |
306 | 306 |
307 void WebCacheManager::EnactStrategy(const AllocationStrategy& strategy) { | 307 void WebCacheManager::EnactStrategy(const AllocationStrategy& strategy) { |
308 // Inform each render process of its cache allocation. | 308 // Inform each render process of its cache allocation. |
309 AllocationStrategy::const_iterator allocation = strategy.begin(); | 309 AllocationStrategy::const_iterator allocation = strategy.begin(); |
310 while (allocation != strategy.end()) { | 310 while (allocation != strategy.end()) { |
311 RenderProcessHost* host = RenderProcessHost::FromID(allocation->first); | 311 content::RenderProcessHost* host = |
| 312 content::RenderProcessHost::FromID(allocation->first); |
312 if (host) { | 313 if (host) { |
313 // This is the capacity this renderer has been allocated. | 314 // This is the capacity this renderer has been allocated. |
314 size_t capacity = allocation->second; | 315 size_t capacity = allocation->second; |
315 | 316 |
316 // We don't reserve any space for dead objects in the cache. Instead, we | 317 // We don't reserve any space for dead objects in the cache. Instead, we |
317 // prefer to keep live objects around. There is probably some performance | 318 // prefer to keep live objects around. There is probably some performance |
318 // tuning to be done here. | 319 // tuning to be done here. |
319 size_t min_dead_capacity = 0; | 320 size_t min_dead_capacity = 0; |
320 | 321 |
321 // We allow the dead objects to consume all of the cache, if the renderer | 322 // We allow the dead objects to consume all of the cache, if the renderer |
322 // so desires. If we wanted this memory, we would have set the total | 323 // so desires. If we wanted this memory, we would have set the total |
323 // capacity lower. | 324 // capacity lower. |
324 size_t max_dead_capacity = capacity; | 325 size_t max_dead_capacity = capacity; |
325 | 326 |
326 host->Send(new ChromeViewMsg_SetCacheCapacities(min_dead_capacity, | 327 host->Send(new ChromeViewMsg_SetCacheCapacities(min_dead_capacity, |
327 max_dead_capacity, | 328 max_dead_capacity, |
328 capacity)); | 329 capacity)); |
329 } | 330 } |
330 ++allocation; | 331 ++allocation; |
331 } | 332 } |
332 } | 333 } |
333 | 334 |
334 void WebCacheManager::ClearRendederCache( | 335 void WebCacheManager::ClearRendederCache( |
335 const std::set<int>& renderers, | 336 const std::set<int>& renderers, |
336 WebCacheManager::ClearCacheOccasion occasion) { | 337 WebCacheManager::ClearCacheOccasion occasion) { |
337 std::set<int>::const_iterator iter = renderers.begin(); | 338 std::set<int>::const_iterator iter = renderers.begin(); |
338 for (; iter != renderers.end(); ++iter) { | 339 for (; iter != renderers.end(); ++iter) { |
339 RenderProcessHost* host = RenderProcessHost::FromID(*iter); | 340 content::RenderProcessHost* host = |
| 341 content::RenderProcessHost::FromID(*iter); |
340 if (host) | 342 if (host) |
341 host->Send(new ChromeViewMsg_ClearCache(occasion == ON_NAVIGATION)); | 343 host->Send(new ChromeViewMsg_ClearCache(occasion == ON_NAVIGATION)); |
342 } | 344 } |
343 } | 345 } |
344 | 346 |
345 void WebCacheManager::ReviseAllocationStrategy() { | 347 void WebCacheManager::ReviseAllocationStrategy() { |
346 DCHECK(stats_.size() <= | 348 DCHECK(stats_.size() <= |
347 active_renderers_.size() + inactive_renderers_.size()); | 349 active_renderers_.size() + inactive_renderers_.size()); |
348 | 350 |
349 // Check if renderers have gone inactive. | 351 // Check if renderers have gone inactive. |
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431 if (idle >= TimeDelta::FromMinutes(kRendererInactiveThresholdMinutes)) { | 433 if (idle >= TimeDelta::FromMinutes(kRendererInactiveThresholdMinutes)) { |
432 // Moved to inactive status. This invalidates our iterator. | 434 // Moved to inactive status. This invalidates our iterator. |
433 inactive_renderers_.insert(*iter); | 435 inactive_renderers_.insert(*iter); |
434 active_renderers_.erase(*iter); | 436 active_renderers_.erase(*iter); |
435 iter = active_renderers_.begin(); | 437 iter = active_renderers_.begin(); |
436 continue; | 438 continue; |
437 } | 439 } |
438 ++iter; | 440 ++iter; |
439 } | 441 } |
440 } | 442 } |
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