blob: 511bb0404413b930233ab441d65691c15954dee0 [file] [log] [blame]
// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// 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.
#include "starboard/shared/pthread/thread_create_priority.h"
#include <sched.h>
#include <sys/resource.h>
#include "starboard/common/log.h"
namespace starboard {
namespace shared {
namespace pthread {
void SetNiceValue(int nice) {
int result = setpriority(PRIO_PROCESS, 0, nice);
if (result != 0) {
SB_NOTREACHED();
}
}
void ThreadSetPriority(SbThreadPriority priority) {
if (!kSbHasThreadPrioritySupport)
return;
// Nice value settings are selected from looking at:
// https://android.googlesource.com/platform/frameworks/native/+/jb-dev/include/utils/ThreadDefs.h#35
switch (priority) {
case kSbThreadPriorityLowest:
SetNiceValue(19);
break;
case kSbThreadPriorityLow:
SetNiceValue(10);
break;
case kSbThreadNoPriority:
case kSbThreadPriorityNormal:
SetNiceValue(0);
break;
case kSbThreadPriorityHigh:
SetNiceValue(-8);
break;
case kSbThreadPriorityHighest:
SetNiceValue(-16);
break;
case kSbThreadPriorityRealTime:
SetNiceValue(-19);
break;
default:
SB_NOTREACHED();
break;
}
}
} // namespace pthread
} // namespace shared
} // namespace starboard