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 union { 33 bool caller_destroys: 1; 34 bool initialized: 1; 35 }; 36 bool cancelpending: 1; 37 bool cancelstate: 1; 38 bool canceltype: 1; 39 bool detachstate: 1; 40 }; 41 42 struct posix_thread { 43 struct k_thread thread; 44 45 /* List nodes for pthread_cleanup_push() / pthread_cleanup_pop() */ 46 sys_slist_t cleanup_list; 47 48 /* List node for ready_q, run_q, or done_q */ 49 sys_dnode_t q_node; 50 51 /* List of keys that thread has called pthread_setspecific() on */ 52 sys_slist_t key_list; 53 54 /* pthread_attr_t */ 55 struct posix_thread_attr attr; 56 57 /* Exit status */ 58 void *retval; 59 60 /* Signal mask */ 61 sigset_t sigset; 62 63 /* Queue ID (internal-only) */ 64 uint8_t qid; 65 }; 66 67 typedef struct pthread_key_obj { 68 /* List of pthread_key_data objects that contain thread 69 * specific data for the key 70 */ 71 sys_slist_t key_data_l; 72 73 /* Optional destructor that is passed to pthread_key_create() */ 74 void (*destructor)(void *value); 75 } pthread_key_obj; 76 77 typedef struct pthread_thread_data { 78 sys_snode_t node; 79 80 /* Key and thread specific data passed to pthread_setspecific() */ 81 pthread_key_obj *key; 82 void *spec_data; 83 } pthread_thread_data; 84 is_pthread_obj_initialized(uint32_t obj)85static inline bool is_pthread_obj_initialized(uint32_t obj) 86 { 87 return (obj & PTHREAD_OBJ_MASK_INIT) != 0; 88 } 89 mark_pthread_obj_initialized(uint32_t obj)90static inline uint32_t mark_pthread_obj_initialized(uint32_t obj) 91 { 92 return obj | PTHREAD_OBJ_MASK_INIT; 93 } 94 mark_pthread_obj_uninitialized(uint32_t obj)95static inline uint32_t mark_pthread_obj_uninitialized(uint32_t obj) 96 { 97 return obj & ~PTHREAD_OBJ_MASK_INIT; 98 } 99 100 struct posix_thread *to_posix_thread(pthread_t pth); 101 102 /* get and possibly initialize a posix_mutex */ 103 struct k_mutex *to_posix_mutex(pthread_mutex_t *mu); 104 105 int posix_to_zephyr_priority(int priority, int policy); 106 int zephyr_to_posix_priority(int priority, int *policy); 107 108 #endif 109
