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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/task_manager/task_manager_interface.h"
#include "base/functional/bind.h"
#include "base/observer_list.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/task_manager/sampling/task_manager_impl.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/child_process_host.h"
#if BUILDFLAG(IS_MAC)
#include "chrome/browser/ui/browser_dialogs.h" // nogncheck
#endif // BUILDFLAG(IS_MAC)
namespace task_manager {
// static
void TaskManagerInterface::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterDictionaryPref(prefs::kTaskManagerWindowPlacement);
registry->RegisterIntegerPref(prefs::kTaskManagerCategory, 1);
registry->RegisterDictionaryPref(prefs::kTaskManagerColumnVisibility);
registry->RegisterBooleanPref(prefs::kTaskManagerEndProcessEnabled, true);
}
// static
bool TaskManagerInterface::IsEndProcessEnabled() {
PrefService* state = g_browser_process->local_state();
return !state || state->GetBoolean(prefs::kTaskManagerEndProcessEnabled);
}
// static
TaskManagerInterface* TaskManagerInterface::GetTaskManager() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
return TaskManagerImpl::GetInstance();
}
// static
void TaskManagerInterface::UpdateAccumulatedStatsNetworkForRoute(
content::GlobalRenderFrameHostId render_frame_host_id,
int64_t recv_bytes,
int64_t sent_bytes) {
// Don't create a task manager if it hasn't already been created.
if (TaskManagerImpl::IsCreated()) {
TaskManagerImpl::GetInstance()->UpdateAccumulatedStatsNetworkForRoute(
render_frame_host_id, recv_bytes, sent_bytes);
}
}
void TaskManagerInterface::AddObserver(TaskManagerObserver* observer) {
observers_.AddObserver(observer);
observer->observed_task_manager_ = this;
ResourceFlagsAdded(observer->desired_resources_flags());
base::TimeDelta current_refresh_time = GetCurrentRefreshTime();
if (current_refresh_time == base::TimeDelta::Max()) {
// This is the first observer to be added. Start updating.
StartUpdating();
}
if (observer->desired_refresh_time() > current_refresh_time)
return;
// Reached here, then this is EITHER (not the first observer to be added AND
// it requires a more frequent refresh rate) OR (it's the very first observer
// to be added).
// Reset the refresh timer.
ScheduleRefresh(observer->desired_refresh_time());
}
void TaskManagerInterface::RemoveObserver(TaskManagerObserver* observer) {
observers_.RemoveObserver(observer);
observer->observed_task_manager_ = nullptr;
// Recalculate the minimum refresh rate and the enabled resource flags.
int64_t flags = 0;
base::TimeDelta min_time = base::TimeDelta::Max();
for (auto& obs : observers_) {
if (obs.desired_refresh_time() < min_time)
min_time = obs.desired_refresh_time();
flags |= obs.desired_resources_flags();
}
if (min_time == base::TimeDelta::Max()) {
// This is the last observer to be removed. Stop updating.
SetEnabledResourceFlags(0);
refresh_timer_->Stop();
StopUpdating();
} else {
SetEnabledResourceFlags(flags);
ScheduleRefresh(min_time);
}
}
void TaskManagerInterface::RecalculateRefreshFlags() {
int64_t flags = 0;
for (auto& observer : observers_)
flags |= observer.desired_resources_flags();
SetEnabledResourceFlags(flags);
}
bool TaskManagerInterface::IsTaskValid(TaskId task_id) const {
return true;
}
bool TaskManagerInterface::IsResourceRefreshEnabled(RefreshType type) const {
return (enabled_resources_flags_ & type) != 0;
}
TaskManagerInterface::TaskManagerInterface()
: refresh_timer_(new base::RepeatingTimer()), enabled_resources_flags_(0) {}
TaskManagerInterface::~TaskManagerInterface() = default;
void TaskManagerInterface::NotifyObserversOnTaskAdded(TaskId id) {
for (TaskManagerObserver& observer : observers_)
observer.OnTaskAdded(id);
}
void TaskManagerInterface::NotifyObserversOnTaskToBeRemoved(TaskId id) {
for (TaskManagerObserver& observer : observers_)
observer.OnTaskToBeRemoved(id);
}
void TaskManagerInterface::NotifyObserversOnRefresh(
const TaskIdList& task_ids) {
for (TaskManagerObserver& observer : observers_)
observer.OnTasksRefreshed(task_ids);
}
void TaskManagerInterface::NotifyObserversOnRefreshWithBackgroundCalculations(
const TaskIdList& task_ids) {
for (TaskManagerObserver& observer : observers_)
observer.OnTasksRefreshedWithBackgroundCalculations(task_ids);
}
void TaskManagerInterface::NotifyObserversOnTaskUnresponsive(TaskId id) {
for (TaskManagerObserver& observer : observers_)
observer.OnTaskUnresponsive(id);
}
base::TimeDelta TaskManagerInterface::GetCurrentRefreshTime() const {
return refresh_timer_->IsRunning() ? refresh_timer_->GetCurrentDelay()
: base::TimeDelta::Max();
}
void TaskManagerInterface::ResourceFlagsAdded(int64_t flags) {
SetEnabledResourceFlags(enabled_resources_flags_ | flags);
}
void TaskManagerInterface::SetEnabledResourceFlags(int64_t flags) {
enabled_resources_flags_ = flags;
}
void TaskManagerInterface::ScheduleRefresh(base::TimeDelta refresh_time) {
refresh_timer_->Start(FROM_HERE, refresh_time,
base::BindRepeating(&TaskManagerInterface::Refresh,
base::Unretained(this)));
}
} // namespace task_manager
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