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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/disks/suspend_unmount_manager.h"
#include "base/bind.h"
#include "chromeos/disks/disk_mount_manager.h"
namespace chromeos {
namespace disks {
SuspendUnmountManager::SuspendUnmountManager(
DiskMountManager* disk_mount_manager,
PowerManagerClient* power_manager_client)
: disk_mount_manager_(disk_mount_manager),
power_manager_client_(power_manager_client),
weak_ptr_factory_(this) {
power_manager_client_->AddObserver(this);
}
SuspendUnmountManager::~SuspendUnmountManager() {
power_manager_client_->RemoveObserver(this);
if (!suspend_readiness_callback_.is_null())
suspend_readiness_callback_.Run();
}
void SuspendUnmountManager::SuspendImminent() {
DCHECK(unmounting_paths_.empty());
if (!unmounting_paths_.empty())
return;
std::set<std::string> mount_paths;
for (const auto& pair : disk_mount_manager_->disks()) {
if (pair.second->device_type() == DEVICE_TYPE_USB &&
!pair.second->mount_path().empty()) {
mount_paths.insert(pair.second->mount_path());
}
}
for (const auto& mount_path : mount_paths) {
if (suspend_readiness_callback_.is_null()) {
suspend_readiness_callback_ =
power_manager_client_->GetSuspendReadinessCallback();
}
disk_mount_manager_->UnmountPath(
mount_path, UNMOUNT_OPTIONS_NONE,
base::Bind(&SuspendUnmountManager::OnUnmountComplete,
weak_ptr_factory_.GetWeakPtr(), mount_path));
unmounting_paths_.insert(mount_path);
}
}
void SuspendUnmountManager::SuspendDone(const base::TimeDelta& sleep_duration) {
// SuspendDone can be called before OnUnmountComplete when suspend is
// cancelled, or it takes long time to unmount volumes.
unmounting_paths_.clear();
suspend_readiness_callback_.Reset();
}
void SuspendUnmountManager::OnUnmountComplete(const std::string& mount_path,
chromeos::MountError error_code) {
// This can happen when unmount completes after suspend done is called.
if (unmounting_paths_.erase(mount_path) != 1)
return;
if (unmounting_paths_.empty() && !suspend_readiness_callback_.is_null()) {
suspend_readiness_callback_.Run();
suspend_readiness_callback_.Reset();
}
}
} // namespace chromeos
} // namespace disks
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