1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <pthread.h> 30 31 #include "pthread_internal.h" 32 33 #define DEFAULT_STACK_SIZE (1024 * 1024) 34 35 int pthread_attr_init(pthread_attr_t* attr) { 36 attr->flags = 0; 37 attr->stack_base = NULL; 38 attr->stack_size = DEFAULT_STACK_SIZE; 39 attr->guard_size = PAGE_SIZE; 40 attr->sched_policy = SCHED_NORMAL; 41 attr->sched_priority = 0; 42 return 0; 43 } 44 45 int pthread_attr_destroy(pthread_attr_t* attr) { 46 memset(attr, 0x42, sizeof(pthread_attr_t)); 47 return 0; 48 } 49 50 int pthread_attr_setdetachstate(pthread_attr_t* attr, int state) { 51 if (state == PTHREAD_CREATE_DETACHED) { 52 attr->flags |= PTHREAD_ATTR_FLAG_DETACHED; 53 } else if (state == PTHREAD_CREATE_JOINABLE) { 54 attr->flags &= ~PTHREAD_ATTR_FLAG_DETACHED; 55 } else { 56 return EINVAL; 57 } 58 return 0; 59 } 60 61 int pthread_attr_getdetachstate(pthread_attr_t const* attr, int* state) { 62 *state = (attr->flags & PTHREAD_ATTR_FLAG_DETACHED) ? PTHREAD_CREATE_DETACHED : PTHREAD_CREATE_JOINABLE; 63 return 0; 64 } 65 66 int pthread_attr_setschedpolicy(pthread_attr_t* attr, int policy) { 67 attr->sched_policy = policy; 68 return 0; 69 } 70 71 int pthread_attr_getschedpolicy(pthread_attr_t const* attr, int* policy) { 72 *policy = attr->sched_policy; 73 return 0; 74 } 75 76 int pthread_attr_setschedparam(pthread_attr_t * attr, struct sched_param const* param) { 77 attr->sched_priority = param->sched_priority; 78 return 0; 79 } 80 81 int pthread_attr_getschedparam(pthread_attr_t const* attr, struct sched_param* param) { 82 param->sched_priority = attr->sched_priority; 83 return 0; 84 } 85 86 int pthread_attr_setstacksize(pthread_attr_t* attr, size_t stack_size) { 87 if ((stack_size & (PAGE_SIZE - 1) || stack_size < PTHREAD_STACK_MIN)) { 88 return EINVAL; 89 } 90 attr->stack_size = stack_size; 91 return 0; 92 } 93 94 int pthread_attr_getstacksize(pthread_attr_t const* attr, size_t* stack_size) { 95 *stack_size = attr->stack_size; 96 return 0; 97 } 98 99 int pthread_attr_setstackaddr(pthread_attr_t*, void*) { 100 // This was removed from POSIX.1-2008, and is not implemented on bionic. 101 // Needed for ABI compatibility with the NDK. 102 return ENOSYS; 103 } 104 105 int pthread_attr_getstackaddr(pthread_attr_t const* attr, void** stack_addr) { 106 // This was removed from POSIX.1-2008. 107 // Needed for ABI compatibility with the NDK. 108 *stack_addr = (char*)attr->stack_base + attr->stack_size; 109 return 0; 110 } 111 112 int pthread_attr_setstack(pthread_attr_t* attr, void* stack_base, size_t stack_size) { 113 if ((stack_size & (PAGE_SIZE - 1) || stack_size < PTHREAD_STACK_MIN)) { 114 return EINVAL; 115 } 116 if ((uint32_t)stack_base & (PAGE_SIZE - 1)) { 117 return EINVAL; 118 } 119 attr->stack_base = stack_base; 120 attr->stack_size = stack_size; 121 return 0; 122 } 123 124 int pthread_attr_getstack(pthread_attr_t const* attr, void** stack_base, size_t* stack_size) { 125 *stack_base = attr->stack_base; 126 *stack_size = attr->stack_size; 127 return 0; 128 } 129 130 int pthread_attr_setguardsize(pthread_attr_t* attr, size_t guard_size) { 131 if (guard_size & (PAGE_SIZE - 1) || guard_size < PAGE_SIZE) { 132 return EINVAL; 133 } 134 attr->guard_size = guard_size; 135 return 0; 136 } 137 138 int pthread_attr_getguardsize(pthread_attr_t const* attr, size_t* guard_size) { 139 *guard_size = attr->guard_size; 140 return 0; 141 } 142 143 int pthread_getattr_np(pthread_t thid, pthread_attr_t* attr) { 144 pthread_internal_t* thread = (pthread_internal_t*) thid; 145 *attr = thread->attr; 146 return 0; 147 } 148 149 int pthread_attr_setscope(pthread_attr_t* , int scope) { 150 if (scope == PTHREAD_SCOPE_SYSTEM) { 151 return 0; 152 } 153 if (scope == PTHREAD_SCOPE_PROCESS) { 154 return ENOTSUP; 155 } 156 return EINVAL; 157 } 158 159 int pthread_attr_getscope(pthread_attr_t const*) { 160 return PTHREAD_SCOPE_SYSTEM; 161 } 162
