| 1 | /* |
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| 2 | * pthread.h - pthread API |
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| 3 | * |
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| 4 | * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless |
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| 5 | * Copyright (c) 2011,2012 UPMC Sorbonne Universites |
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| 6 | * |
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| 7 | * This file is part of ALMOS. |
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| 8 | * |
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| 9 | * ALMOS is free software; you can redistribute it and/or modify it |
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| 10 | * under the terms of the GNU General Public License as published by |
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| 11 | * the Free Software Foundation; version 2.0 of the License. |
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| 12 | * |
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| 13 | * ALMOS is distributed in the hope that it will be useful, but |
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| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with ALMOS; if not, write to the Free Software Foundation, |
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| 20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |
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| 23 | #ifndef _PTHREAD_H_ |
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| 24 | #define _PTHREAD_H_ |
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| 25 | |
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| 26 | #include <sys/types.h> |
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| 27 | #include <sched.h> |
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| 28 | #include <sys/list.h> |
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| 29 | #include <semaphore.h> |
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| 30 | |
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| 31 | /* START COPYING FROM KERNEL HEADER */ |
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| 32 | #define __PT_ATTR_DEFAULT 0x000 |
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| 33 | #define __PT_ATTR_DETACH 0x001 /* for compatiblity */ |
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| 34 | #define __PT_FORK_WILL_EXEC 0x001 /* for compatiblity */ |
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| 35 | #define __PT_FORK_USE_TARGET_CPU 0x002 /* for compatiblity */ |
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| 36 | #define __PT_ATTR_LEGACY_MASK 0x003 /* TODO: remove legacy attr issue*/ |
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| 37 | |
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| 38 | #define __PT_FORK_USE_AFFINITY 0x004 |
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| 39 | #define __PT_ATTR_MEM_PRIO 0x008 |
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| 40 | #define __PT_ATTR_INTERLEAVE_SEQ 0x010 |
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| 41 | #define __PT_ATTR_INTERLEAVE_ALL 0x020 |
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| 42 | #define __PT_ATTR_AUTO_MGRT 0x040 |
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| 43 | #define __PT_ATTR_AUTO_NXTT 0x080 |
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| 44 | #define __PT_ATTR_MEM_CID_RR 0x100 |
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| 45 | |
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| 46 | typedef struct |
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| 47 | { |
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| 48 | uint_t key; |
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| 49 | uint_t flags; |
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| 50 | uint_t sched_policy; |
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| 51 | uint_t inheritsched; |
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| 52 | void *stack_addr; |
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| 53 | size_t stack_size; |
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| 54 | void *entry_func; |
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| 55 | void *exit_func; |
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| 56 | void *arg1; |
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| 57 | void *arg2; |
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| 58 | void *sigreturn_func; |
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| 59 | void *sigstack_addr; |
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| 60 | size_t sigstack_size; |
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| 61 | struct sched_param sched_param; |
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| 62 | sint_t cid; |
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| 63 | sint_t cpu_lid; |
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| 64 | sint_t cpu_gid; |
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| 65 | uint_t tid; // kernel cookie can be used in debuggin userland |
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| 66 | pid_t pid; |
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| 67 | } pthread_attr_t; |
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| 68 | /* END COPYING FROM KERNEL HEADER */ |
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| 69 | |
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| 70 | /* Pthread related constants */ |
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| 71 | #define PTHREAD_THREADS_MAX 1024 |
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| 72 | #define PTHREAD_STACK_MIN 2*4096 |
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| 73 | #define PTHREAD_CREATE_DETACHED 1 |
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| 74 | #define PTHREAD_CREATE_JOINABLE 0 |
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| 75 | #define PTHREAD_EXPLICIT_SCHED 0 |
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| 76 | #define PTHREAD_INHERIT_SCHED 1 |
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| 77 | #define PTHREAD_SCOPE_SYSTEM 0 |
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| 78 | #define PTHREAD_SCOPE_PROCESS 1 |
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| 79 | #define PTHREAD_PROCESS_PRIVATE 0 |
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| 80 | #define PTHREAD_PROCESS_SHARED 1 |
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| 81 | #define SEM_VALUE_MAX PTHREAD_THREADS_MAX |
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| 82 | |
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| 83 | struct __shared_s |
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| 84 | { |
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| 85 | volatile uint_t mailbox __CACHELINE; |
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| 86 | struct list_entry list; |
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| 87 | int tid; |
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| 88 | void *arg; |
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| 89 | }; |
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| 90 | |
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| 91 | #define PTHREAD_KEYS_MAX 64 |
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| 92 | #define PTHREAD_DESTRUCTOR_ITERATIONS 32 |
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| 93 | |
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| 94 | enum{ |
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| 95 | __PT_TLS_SHARED = 0, |
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| 96 | __PT_TLS_ERRNO, |
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| 97 | __PT_TLS_COND_WAIT, |
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| 98 | __PT_TLS_LOCAL_HEAP, |
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| 99 | __PT_TLS_FORK_FLAGS, |
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| 100 | __PT_TLS_FORK_CPUID, |
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| 101 | __PT_TLS_VALUES_NR |
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| 102 | }; |
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| 103 | |
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| 104 | #define __pthread_tls_set(tls,index,val) |
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| 105 | #define __pthread_tls_get(tls,index) |
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| 106 | #define __pthread_tls_getlocation(tls,index) |
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| 107 | |
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| 108 | typedef struct __pthread_tls_s |
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| 109 | { |
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| 110 | int signature; |
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| 111 | pthread_attr_t attr; |
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| 112 | void *values_tbl[PTHREAD_KEYS_MAX]; |
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| 113 | uint_t tls_tbl[__PT_TLS_VALUES_NR]; |
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| 114 | }__pthread_tls_t; |
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| 115 | |
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| 116 | void __pthread_init(void); |
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| 117 | void __pthread_tls_init(__pthread_tls_t *tls); |
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| 118 | void __pthread_tls_destroy(void); |
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| 119 | void __pthread_keys_init(void); |
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| 120 | void __pthread_keys_destroy(void); |
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| 121 | void __pthread_barrier_init(void); |
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| 122 | |
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| 123 | #define __pthread_tls_seterrno(tls,errno) |
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| 124 | |
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| 125 | #define __PTHREAD_OBJECT_CREATED 0xA5B5 |
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| 126 | #define __PTHREAD_OBJECT_DESTROYED 0xB0A0B0A0 |
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| 127 | #define __PTHREAD_OBJECT_BUSY 0x5A5A5A5A |
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| 128 | #define __PTHREAD_OBJECT_FREE 0xC0A5C0A5 |
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| 129 | |
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| 130 | typedef unsigned long pthread_t; |
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| 131 | typedef unsigned long pthread_rwlock_t; |
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| 132 | typedef unsigned long pthread_rwlockattr_t; |
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| 133 | typedef unsigned long pthread_key_t; |
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| 134 | |
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| 135 | typedef struct |
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| 136 | { |
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| 137 | uint_t val __CACHELINE; |
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| 138 | }pthread_spinlock_t; |
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| 139 | |
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| 140 | #define PTHREAD_MUTEX_NORMAL 0 |
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| 141 | #define PTHREAD_MUTEX_RECURSIVE 1 |
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| 142 | #define PTHREAD_MUTEX_ERRORCHECK 2 |
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| 143 | #define PTHREAD_MUTEX_DEFAULT PTHREAD_MUTEX_NORMAL |
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| 144 | |
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| 145 | typedef struct |
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| 146 | { |
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| 147 | int scope; |
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| 148 | uint_t type; |
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| 149 | uint_t cntr; |
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| 150 | }pthread_mutexattr_t; |
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| 151 | |
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| 152 | typedef struct |
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| 153 | { |
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| 154 | sem_t sem; |
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| 155 | pthread_spinlock_t lock; |
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| 156 | volatile uint_t value __CACHELINE; |
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| 157 | uint_t waiting __CACHELINE; |
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| 158 | struct list_entry queue __CACHELINE; |
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| 159 | pthread_mutexattr_t attr __CACHELINE; |
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| 160 | }pthread_mutex_t; |
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| 161 | |
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| 162 | #define __MUTEX_INITIALIZER(_t) \ |
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| 163 | { \ |
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| 164 | .sem = 0, \ |
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| 165 | .lock = {.val = __PTHREAD_OBJECT_FREE}, \ |
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| 166 | .value = __PTHREAD_OBJECT_FREE, \ |
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| 167 | .waiting = 0, \ |
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| 168 | .queue = {.next = 0, .pred = 0}, \ |
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| 169 | .attr = {.type = (_t), .scope = PTHREAD_PROCESS_PRIVATE, .cntr = 0}\ |
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| 170 | } |
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| 171 | |
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| 172 | #define PTHREAD_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_DEFAULT) |
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| 173 | #define PTHREAD_RECURSIVE_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_RECURSIVE) |
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| 174 | #define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER __MUTEX_INITIALIZER(PTHREAD_MUTEX_ERRORCHECK) |
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| 175 | |
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| 176 | typedef struct |
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| 177 | { |
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| 178 | int scope; |
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| 179 | void *sysid; |
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| 180 | pthread_spinlock_t lock; |
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| 181 | uint_t count __CACHELINE; |
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| 182 | struct list_entry queue __CACHELINE; |
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| 183 | }pthread_cond_t; |
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| 184 | |
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| 185 | #define PTHREAD_COND_INITIALIZER \ |
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| 186 | { \ |
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| 187 | .scope = PTHREAD_PROCESS_PRIVATE, \ |
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| 188 | .lock = {.val = __PTHREAD_OBJECT_FREE}, \ |
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| 189 | .count = 0, \ |
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| 190 | .queue = {.next = 0, .pred = 0} \ |
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| 191 | } |
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| 192 | |
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| 193 | typedef struct |
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| 194 | { |
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| 195 | int lock; |
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| 196 | int state; |
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| 197 | }pthread_once_t; |
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| 198 | |
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| 199 | #define PTHREAD_BARRIER_SERIAL_THREAD 1 |
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| 200 | |
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| 201 | typedef struct |
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| 202 | { |
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| 203 | sint_t scope; |
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| 204 | }pthread_barrierattr_t; |
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| 205 | |
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| 206 | typedef struct |
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| 207 | { |
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| 208 | sint_t scope; |
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| 209 | }pthread_condattr_t; |
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| 210 | |
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| 211 | typedef struct |
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| 212 | { |
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| 213 | int scope; |
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| 214 | void *sysid; |
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| 215 | |
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| 216 | __cacheline_t cntr; |
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| 217 | __cacheline_t count; |
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| 218 | |
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| 219 | volatile __cacheline_t state[2]; |
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| 220 | |
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| 221 | union { |
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| 222 | uint_t phase; |
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| 223 | __cacheline_t pading; |
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| 224 | }; |
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| 225 | }pthread_barrier_t; |
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| 226 | |
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| 227 | #define PTHREAD_ONCE_INIT {.lock = 0, .state = 0} |
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| 228 | |
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| 229 | /** Pthread Attribute Modifiers */ |
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| 230 | int pthread_attr_init (pthread_attr_t *attr); |
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| 231 | int pthread_attr_destroy(pthread_attr_t *attr); |
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| 232 | int pthread_attr_setstacksize(pthread_attr_t *attr, unsigned int stacksize); |
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| 233 | int pthread_attr_getstacksize(pthread_attr_t *attr, size_t *stacksize); |
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| 234 | int pthread_attr_setstack(pthread_attr_t *attr, void *stackaddr, size_t stacksize); |
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| 235 | int pthread_attr_getstack(pthread_attr_t *attr, void **stackaddr, size_t *stacksize); |
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| 236 | int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate); |
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| 237 | int pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate); |
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| 238 | int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy); |
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| 239 | int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy); |
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| 240 | int pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param); |
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| 241 | int pthread_attr_getschedparam(const pthread_attr_t *attr, struct sched_param *param); |
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| 242 | int pthread_attr_setinheritsched(pthread_attr_t *attr, int inherit); |
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| 243 | int pthread_attr_getinheritsched(const pthread_attr_t *attr, int *inherit); |
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| 244 | int pthread_attr_setscope(pthread_attr_t *attr, int scope); |
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| 245 | |
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| 246 | /** Thread Management */ |
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| 247 | void pthread_exit(void *retval); |
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| 248 | int pthread_create(pthread_t *thread, pthread_attr_t *attr, void *(*start_routine)(void *), void *arg); |
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| 249 | int pthread_join(pthread_t th, void **thread_return); |
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| 250 | int pthread_detach(pthread_t thread); |
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| 251 | int pthread_equal(pthread_t thread1,pthread_t thread2); |
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| 252 | int pthread_once(pthread_once_t *once_control, void (*init_routine) (void)); |
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| 253 | void pthread_yield(void); |
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| 254 | pthread_t pthread_self(void); |
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| 255 | |
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| 256 | /** Thread specific data */ |
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| 257 | int pthread_key_create(pthread_key_t *key, void (*destructor)(void*)); |
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| 258 | int pthread_key_delete(pthread_key_t key); |
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| 259 | int pthread_setspecific(pthread_key_t key, const void *value); |
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| 260 | void *pthread_getspecific(pthread_key_t key); |
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| 261 | |
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| 262 | /** SpinLock Sync Object */ |
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| 263 | int pthread_spin_init(pthread_spinlock_t *lock,int pshared); |
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| 264 | int pthread_spin_lock(pthread_spinlock_t *lock); |
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| 265 | int pthread_spin_trylock(pthread_spinlock_t *lock); |
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| 266 | int pthread_spin_unlock(pthread_spinlock_t *lock); |
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| 267 | int pthread_spin_destroy(pthread_spinlock_t *lock); |
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| 268 | |
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| 269 | /** Mutex Sync Object */ |
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| 270 | int pthread_mutexattr_destroy(pthread_mutexattr_t *attr); |
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| 271 | int pthread_mutexattr_init(pthread_mutexattr_t *attr); |
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| 272 | int pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared); |
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| 273 | int pthread_mutexattr_getpshared(pthread_mutexattr_t *attr, int *pshared); |
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| 274 | int pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type); |
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| 275 | int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type); |
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| 276 | int pthread_mutex_init (pthread_mutex_t *mutex, const pthread_mutexattr_t *attr); |
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| 277 | int pthread_mutex_lock(pthread_mutex_t *mutex); |
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| 278 | int pthread_mutex_trylock(pthread_mutex_t *mutex); |
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| 279 | int pthread_mutex_unlock(pthread_mutex_t *mutex); |
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| 280 | int pthread_mutex_destroy(pthread_mutex_t *mutex); |
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| 281 | |
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| 282 | /** Condition Variable Sync Object */ |
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| 283 | int pthread_cond_init(pthread_cond_t *cond, pthread_condattr_t *cond_attr); |
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| 284 | int pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared); |
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| 285 | int pthread_condattr_getpshared(pthread_condattr_t *attr, int *pshared); |
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| 286 | int pthread_cond_signal(pthread_cond_t *cond); |
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| 287 | int pthread_cond_broadcast(pthread_cond_t *cond); |
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| 288 | int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); |
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| 289 | int pthread_cond_destroy(pthread_cond_t *cond); |
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| 290 | |
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| 291 | /** Rread/Write Lock Sync Object */ |
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| 292 | int pthread_rwlock_init(pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr); |
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| 293 | int pthread_rwlock_wrlock(pthread_rwlock_t *rwlock); |
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| 294 | int pthread_rwlock_trywrlock(pthread_rwlock_t *rwlock); |
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| 295 | int pthread_rwlock_rdlock(pthread_rwlock_t *rwlock); |
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| 296 | int pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock); |
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| 297 | int pthread_rwlock_unlock(pthread_rwlock_t *rwlock); |
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| 298 | int pthread_rwlock_destroy(pthread_rwlock_t *rwlock); |
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| 299 | |
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| 300 | /** Barrier Sync Object */ |
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| 301 | int pthread_barrierattr_destroy(pthread_barrierattr_t *attr); |
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| 302 | int pthread_barrierattr_init(pthread_barrierattr_t *attr); |
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| 303 | int pthread_barrierattr_getpshared(pthread_barrierattr_t *attr, int *scope); |
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| 304 | int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int scope); |
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| 305 | int pthread_barrier_init (pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned count); |
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| 306 | int pthread_barrier_wait (pthread_barrier_t *barrier); |
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| 307 | int pthread_barrier_destroy(pthread_barrier_t *barrier); |
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| 308 | |
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| 309 | |
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| 310 | /** POSIX-Like, Not Protable, Additional Operations */ |
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| 311 | #define PT_TRACE_OFF 0 |
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| 312 | #define PT_TRACE_ON 1 |
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| 313 | #define PT_SHOW_STATE 2 |
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| 314 | |
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| 315 | #define PT_FORK_DEFAULT __PT_ATTR_DEFAULT |
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| 316 | #define PT_FORK_WILL_EXEC __PT_FORK_WILL_EXEC |
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| 317 | #define PT_FORK_TARGET_CPU __PT_FORK_USE_TARGET_CPU |
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| 318 | #define PT_FORK_SET_AFFINITY __PT_FORK_USE_AFFINITY |
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| 319 | #define PT_ATTR_MEM_PRIO __PT_ATTR_MEM_PRIO |
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| 320 | #define PT_ATTR_AUTO_MGRT __PT_ATTR_AUTO_MGRT |
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| 321 | #define PT_ATTR_AUTO_NXTT __PT_ATTR_AUTO_NXTT |
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| 322 | #define PT_ATTR_INTERLEAVE_SEQ __PT_ATTR_INTERLEAVE_SEQ |
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| 323 | #define PT_ATTR_INTERLEAVE_ALL __PT_ATTR_INTERLEAVE_ALL |
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| 324 | #define PT_ATTR_MEM_CID_RR __PT_ATTR_MEM_CID_RR |
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| 325 | |
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| 326 | |
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| 327 | int pthread_migrate_np(pthread_attr_t *attr); |
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| 328 | int pthread_profiling_np(int cmd, pid_t pid, pthread_t tid); |
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| 329 | int pthread_attr_setflags_np(pthread_attr_t *attr, unsigned int flags, unsigned int *old); |
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| 330 | int pthread_attr_setcpuid_np(pthread_attr_t *attr, int cpu_id, int *old_cpu_id); |
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| 331 | int pthread_attr_getcpuid_np(int *cpu_id); |
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| 332 | int pthread_attr_setforkinfo_np(int flags); |
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| 333 | int pthread_attr_setforkcpuid_np(int cpu_id); |
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| 334 | int pthread_attr_getforkcpuid_np(int *cpu_id); |
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| 335 | |
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| 336 | |
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| 337 | extern pthread_mutex_t __printf_lock; |
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| 338 | extern uint_t ___dmsg_lock; |
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| 339 | extern uint_t ___dmsg_ok; |
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| 340 | |
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| 341 | #define printf_r(...) \ |
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| 342 | do{ \ |
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| 343 | pthread_mutex_lock(&__printf_lock); \ |
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| 344 | printf(__VA_ARGS__); \ |
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| 345 | pthread_mutex_unlock(&__printf_lock); \ |
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| 346 | }while(0) |
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| 347 | |
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| 348 | #define fprintf_r(x,...) \ |
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| 349 | do{ \ |
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| 350 | pthread_mutex_lock(&__printf_lock); \ |
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| 351 | fprintf((x), __VA_ARGS__); \ |
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| 352 | pthread_mutex_unlock(&__printf_lock); \ |
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| 353 | }while(0) |
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| 354 | |
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| 355 | #define dmsg_r(x,...) \ |
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| 356 | do{ \ |
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| 357 | if(___dmsg_ok){ \ |
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| 358 | cpu_spinlock_lock(&___dmsg_lock); \ |
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| 359 | fprintf((x), __VA_ARGS__); \ |
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| 360 | cpu_spinlock_unlock(&___dmsg_lock); \ |
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| 361 | } \ |
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| 362 | }while(0) |
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| 363 | |
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| 364 | #define dmsg(x,...) \ |
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| 365 | do{ \ |
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| 366 | if(___dmsg_ok){ \ |
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| 367 | fprintf((x), __VA_ARGS__); \ |
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| 368 | } \ |
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| 369 | }while(0) |
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| 370 | |
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| 371 | |
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| 372 | //////////////////////////////////////////////////////////////////// |
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| 373 | // Private Section // |
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| 374 | //////////////////////////////////////////////////////////////////// |
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| 375 | #undef __pthread_tls_set |
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| 376 | #define __pthread_tls_set(_tls,_indx,_val) do{(_tls)->tls_tbl[(_indx)] = (uint_t)(_val);}while(0) |
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| 377 | |
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| 378 | #undef __pthread_tls_get |
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| 379 | #define __pthread_tls_get(_tls,_indx) ((_tls)->tls_tbl[(_indx)]) |
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| 380 | |
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| 381 | #undef __pthread_tls_getlocation |
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| 382 | #define __pthread_tls_getlocation(_tls,_indx) (&(_tls)->tls_tbl[(_indx)]) |
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| 383 | |
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| 384 | #endif /* _PTHREAD_H_ */ |
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