1 /* 2 * Copyright (c) 2022 Meta 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef ZEPHYR_LIB_POSIX_POSIX_INTERNAL_H_ 8 #define ZEPHYR_LIB_POSIX_POSIX_INTERNAL_H_ 9 10 #include <stdbool.h> 11 #include <stdint.h> 12 13 #include <zephyr/kernel.h> 14 #include <zephyr/posix/pthread.h> 15 #include <zephyr/posix/signal.h> 16 #include <zephyr/sys/dlist.h> 17 #include <zephyr/sys/slist.h> 18 19 /* 20 * Bit used to mark a pthread object as initialized. Initialization status is 21 * verified (against internal status) in lock / unlock / destroy functions. 22 */ 23 #define PTHREAD_OBJ_MASK_INIT 0x80000000 24 25 struct posix_thread_attr { 26 void *stack; 27 /* the following two bitfields should combine to be 32-bits in size */ 28 uint32_t stacksize : CONFIG_POSIX_PTHREAD_ATTR_STACKSIZE_BITS; 29 uint16_t guardsize : CONFIG_POSIX_PTHREAD_ATTR_GUARDSIZE_BITS; 30 int8_t priority; 31 uint8_t schedpolicy: 2; 32 bool contentionscope: 1; 33 bool inheritsched: 1; 34 union { 35 bool caller_destroys: 1; 36 bool initialized: 1; 37 }; 38 bool cancelpending: 1; 39 bool cancelstate: 1; 40 bool canceltype: 1; 41 bool detachstate: 1; 42 }; 43 44 struct posix_thread { 45 struct k_thread thread; 46 47 /* List nodes for pthread_cleanup_push() / pthread_cleanup_pop() */ 48 sys_slist_t cleanup_list; 49 50 /* List node for ready_q, run_q, or done_q */ 51 sys_dnode_t q_node; 52 53 /* List of keys that thread has called pthread_setspecific() on */ 54 sys_slist_t key_list; 55 56 /* pthread_attr_t */ 57 struct posix_thread_attr attr; 58 59 /* Exit status */ 60 void *retval; 61 62 /* Signal mask */ 63 sigset_t sigset; 64 65 /* Queue ID (internal-only) */ 66 uint8_t qid; 67 }; 68 69 typedef struct pthread_key_obj { 70 /* List of pthread_key_data objects that contain thread 71 * specific data for the key 72 */ 73 sys_slist_t key_data_l; 74 75 /* Optional destructor that is passed to pthread_key_create() */ 76 void (*destructor)(void *value); 77 } pthread_key_obj; 78 79 typedef struct pthread_thread_data { 80 sys_snode_t node; 81 82 /* Key and thread specific data passed to pthread_setspecific() */ 83 pthread_key_obj *key; 84 void *spec_data; 85 } pthread_thread_data; 86 87 struct pthread_key_data { 88 sys_snode_t node; 89 pthread_thread_data thread_data; 90 }; 91 is_pthread_obj_initialized(uint32_t obj)92static inline bool is_pthread_obj_initialized(uint32_t obj) 93 { 94 return (obj & PTHREAD_OBJ_MASK_INIT) != 0; 95 } 96 mark_pthread_obj_initialized(uint32_t obj)97static inline uint32_t mark_pthread_obj_initialized(uint32_t obj) 98 { 99 return obj | PTHREAD_OBJ_MASK_INIT; 100 } 101 mark_pthread_obj_uninitialized(uint32_t obj)102static inline uint32_t mark_pthread_obj_uninitialized(uint32_t obj) 103 { 104 return obj & ~PTHREAD_OBJ_MASK_INIT; 105 } 106 107 struct posix_thread *to_posix_thread(pthread_t pth); 108 109 /* get and possibly initialize a posix_mutex */ 110 struct k_mutex *to_posix_mutex(pthread_mutex_t *mu); 111 112 int posix_to_zephyr_priority(int priority, int policy); 113 int zephyr_to_posix_priority(int priority, int *policy); 114 115 #endif 116
