/* * Copyright (C) 2008 The Android Open Source Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef _SCHED_H_ #define _SCHED_H_ #include #include #include __BEGIN_DECLS /* This name is used by glibc, but not by the kernel. */ #define SCHED_OTHER SCHED_NORMAL struct sched_param { int sched_priority; }; int sched_setscheduler(pid_t __pid, int __policy, const struct sched_param* __param); int sched_getscheduler(pid_t __pid); int sched_yield(void); int sched_get_priority_max(int __policy); int sched_get_priority_min(int __policy); int sched_setparam(pid_t __pid, const struct sched_param* __param); int sched_getparam(pid_t __pid, struct sched_param* __param); int sched_rr_get_interval(pid_t __pid, struct timespec* __quantum); #if defined(__USE_GNU) #if (defined(__LP64__)) || (defined(__arm__)) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__i386__) && __ANDROID_API__ >= 17) int clone(int (*__fn)(void*), void* __child_stack, int __flags, void* __arg, ...) __INTRODUCED_IN_ARM(9) __INTRODUCED_IN_MIPS(12) __INTRODUCED_IN_X86(17); #endif /* (defined(__LP64__)) || (defined(__arm__)) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__i386__) && __ANDROID_API__ >= 17) */ #if __ANDROID_API__ >= 17 int unshare(int __flags) __INTRODUCED_IN(17); #endif /* __ANDROID_API__ >= 17 */ #if __ANDROID_API__ >= 12 int sched_getcpu(void) __INTRODUCED_IN(12); #endif /* __ANDROID_API__ >= 12 */ #if __ANDROID_API__ >= 21 int setns(int __fd, int __ns_type) __INTRODUCED_IN(21); #endif /* __ANDROID_API__ >= 21 */ #ifdef __LP64__ #define CPU_SETSIZE 1024 #else #define CPU_SETSIZE 32 #endif #define __CPU_BITTYPE unsigned long int /* mandated by the kernel */ #define __CPU_BITS (8 * sizeof(__CPU_BITTYPE)) #define __CPU_ELT(x) ((x) / __CPU_BITS) #define __CPU_MASK(x) ((__CPU_BITTYPE)1 << ((x) & (__CPU_BITS - 1))) typedef struct { __CPU_BITTYPE __bits[ CPU_SETSIZE / __CPU_BITS ]; } cpu_set_t; #if __ANDROID_API__ >= 12 int sched_setaffinity(pid_t __pid, size_t __set_size, const cpu_set_t* __set) __INTRODUCED_IN(12); int sched_getaffinity(pid_t __pid, size_t __set_size, cpu_set_t* __set) __INTRODUCED_IN(12); #endif /* __ANDROID_API__ >= 12 */ #define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t), set) #define CPU_SET(cpu, set) CPU_SET_S(cpu, sizeof(cpu_set_t), set) #define CPU_CLR(cpu, set) CPU_CLR_S(cpu, sizeof(cpu_set_t), set) #define CPU_ISSET(cpu, set) CPU_ISSET_S(cpu, sizeof(cpu_set_t), set) #define CPU_COUNT(set) CPU_COUNT_S(sizeof(cpu_set_t), set) #define CPU_EQUAL(set1, set2) CPU_EQUAL_S(sizeof(cpu_set_t), set1, set2) #define CPU_AND(dst, set1, set2) __CPU_OP(dst, set1, set2, &) #define CPU_OR(dst, set1, set2) __CPU_OP(dst, set1, set2, |) #define CPU_XOR(dst, set1, set2) __CPU_OP(dst, set1, set2, ^) #define __CPU_OP(dst, set1, set2, op) __CPU_OP_S(sizeof(cpu_set_t), dst, set1, set2, op) /* Support for dynamically-allocated cpu_set_t */ #define CPU_ALLOC_SIZE(count) \ __CPU_ELT((count) + (__CPU_BITS - 1)) * sizeof(__CPU_BITTYPE) #define CPU_ALLOC(count) __sched_cpualloc((count)) #define CPU_FREE(set) __sched_cpufree((set)) #if __ANDROID_API__ >= 12 cpu_set_t* __sched_cpualloc(size_t __count) __INTRODUCED_IN(12); void __sched_cpufree(cpu_set_t* __set) __INTRODUCED_IN(12); #endif /* __ANDROID_API__ >= 12 */ #define CPU_ZERO_S(setsize, set) __builtin_memset(set, 0, setsize) #define CPU_SET_S(cpu, setsize, set) \ do { \ size_t __cpu = (cpu); \ if (__cpu < 8 * (setsize)) \ (set)->__bits[__CPU_ELT(__cpu)] |= __CPU_MASK(__cpu); \ } while (0) #define CPU_CLR_S(cpu, setsize, set) \ do { \ size_t __cpu = (cpu); \ if (__cpu < 8 * (setsize)) \ (set)->__bits[__CPU_ELT(__cpu)] &= ~__CPU_MASK(__cpu); \ } while (0) #define CPU_ISSET_S(cpu, setsize, set) \ (__extension__ ({ \ size_t __cpu = (cpu); \ (__cpu < 8 * (setsize)) \ ? ((set)->__bits[__CPU_ELT(__cpu)] & __CPU_MASK(__cpu)) != 0 \ : 0; \ })) #define CPU_EQUAL_S(setsize, set1, set2) (__builtin_memcmp(set1, set2, setsize) == 0) #define CPU_AND_S(setsize, dst, set1, set2) __CPU_OP_S(setsize, dst, set1, set2, &) #define CPU_OR_S(setsize, dst, set1, set2) __CPU_OP_S(setsize, dst, set1, set2, |) #define CPU_XOR_S(setsize, dst, set1, set2) __CPU_OP_S(setsize, dst, set1, set2, ^) #define __CPU_OP_S(setsize, dstset, srcset1, srcset2, op) \ do { \ cpu_set_t* __dst = (dstset); \ const __CPU_BITTYPE* __src1 = (srcset1)->__bits; \ const __CPU_BITTYPE* __src2 = (srcset2)->__bits; \ size_t __nn = 0, __nn_max = (setsize)/sizeof(__CPU_BITTYPE); \ for (; __nn < __nn_max; __nn++) \ (__dst)->__bits[__nn] = __src1[__nn] op __src2[__nn]; \ } while (0) #define CPU_COUNT_S(setsize, set) __sched_cpucount((setsize), (set)) #if __ANDROID_API__ >= 12 int __sched_cpucount(size_t __set_size, cpu_set_t* __set) __INTRODUCED_IN(12); #endif /* __ANDROID_API__ >= 12 */ #endif /* __USE_GNU */ __END_DECLS #endif /* _SCHED_H_ */