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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "SchedulingPolicyService"
//#define LOG_NDEBUG 0
#include <binder/IServiceManager.h>
#include <utils/Mutex.h>
#include "ISchedulingPolicyService.h"
#include "SchedulingPolicyService.h"
namespace android {
static sp<ISchedulingPolicyService> sSchedulingPolicyService;
static const String16 _scheduling_policy("scheduling_policy");
static Mutex sMutex;
int requestPriority(pid_t pid, pid_t tid, int32_t prio, bool asynchronous)
{
// FIXME merge duplicated code related to service lookup, caching, and error recovery
int ret;
for (;;) {
sMutex.lock();
sp<ISchedulingPolicyService> sps = sSchedulingPolicyService;
sMutex.unlock();
if (sps == 0) {
sp<IBinder> binder = defaultServiceManager()->checkService(_scheduling_policy);
if (binder == 0) {
sleep(1);
continue;
}
sps = interface_cast<ISchedulingPolicyService>(binder);
sMutex.lock();
sSchedulingPolicyService = sps;
sMutex.unlock();
}
ret = sps->requestPriority(pid, tid, prio, asynchronous);
if (ret != DEAD_OBJECT) {
break;
}
ALOGW("SchedulingPolicyService died");
sMutex.lock();
sSchedulingPolicyService.clear();
sMutex.unlock();
}
return ret;
}
} // namespace android
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