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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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