/* ** Copyright 2007, 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. */ #include #include #include #include #include #include #include #if defined(__ANDROID__) #include #include #define __android_unused #else #define __android_unused __attribute__((__unused__)) #endif int android_set_ioprio(int pid __android_unused, IoSchedClass clazz __android_unused, int ioprio __android_unused) { #if defined(__ANDROID__) if (syscall(SYS_ioprio_set, IOPRIO_WHO_PROCESS, pid, ioprio | (clazz << IOPRIO_CLASS_SHIFT))) { return -1; } #endif return 0; } int android_get_ioprio(int pid __android_unused, IoSchedClass *clazz, int *ioprio) { #if defined(__ANDROID__) int rc; if ((rc = syscall(SYS_ioprio_get, IOPRIO_WHO_PROCESS, pid)) < 0) { return -1; } *clazz = (rc >> IOPRIO_CLASS_SHIFT); *ioprio = (rc & 0xff); #else *clazz = IoSchedClass_NONE; *ioprio = 0; #endif return 0; }