| 1 | #ifndef __PTHREAD_EXTRA_H__ |
| 2 | #define __PTHREAD_EXTRA_H__ |
| 3 | |
| 4 | #include <pthread.h> |
| 5 | #include <stdbool.h> |
| 6 | #include <stdint.h> |
| 7 | #include <signal.h> |
| 8 | //#include <time.h> |
| 9 | |
| 10 | #define PTHREAD_XTIME_NOBLOCK (&(struct timespec){ .tv_sec = 0, .tv_nsec = 0 }) |
| 11 | #define PTHREAD_XTIME_FOREVER NULL |
| 12 | |
| 13 | // User data |
| 14 | |
| 15 | #define PTHREAD_XTHREADS_MAX 65535 |
| 16 | #define PTHREAD_XNULL ((pthread_t)NULL) |
| 17 | |
| 18 | #ifdef __PTHREAD_EXTRA_INTERNAL |
| 19 | typedef struct pthread_user_data_internal_t { |
| 20 | pthread_t tid; //Thread ID |
| 21 | void *usr; //User pointer |
| 22 | //Internaly used members: |
| 23 | sig_atomic_t running; //pthread_pause |
| 24 | } pthread_user_data_internal_t; |
| 25 | |
| 26 | pthread_user_data_internal_t* pthread_user_data_internal(pthread_t thread); |
| 27 | #endif //__PTHREAD_EXTRA_INTERNAL |
| 28 | |
| 29 | void** pthread_user_data_ptr(pthread_t thread); |
| 30 | void* pthread_user_data_get(pthread_t thread); |
| 31 | void pthread_user_data_set(pthread_t thread, void *usr); |
| 32 | void pthread_user_data_cleanup(void * arg); |
| 33 | |
| 34 | // Pausing |
| 35 | |
| 36 | //GDB: handle SIG34 nostop noprint |
| 37 | #define PTHREAD_XSIG_STOP (SIGRTMIN+0) |
| 38 | #define PTHREAD_XSIG_CONT (SIGRTMIN+1) |
| 39 | #define PTHREAD_XSIGRTMIN (SIGRTMIN+2) //First unused RT signal |
| 40 | |
| 41 | int pthread_extra_create(pthread_t *restrict thread, |
| 42 | const pthread_attr_t *restrict attr, |
| 43 | void *(*start_routine)(void *), |
| 44 | void *restrict arg); |
| 45 | void pthread_unpause_handler(); |
| 46 | void pthread_pause_handler(); |
| 47 | void pthread_pause_enable(); |
| 48 | void pthread_pause_disable(); |
| 49 | int pthread_pause(pthread_t thread); |
| 50 | int pthread_unpause(pthread_t thread); |
| 51 | int pthread_pause_reschedule(pthread_t thread); |
| 52 | int pthread_extra_yield(); |
| 53 | |
| 54 | // Message queues |
| 55 | |
| 56 | //Flags |
| 57 | typedef uint8_t pthread_mq_flags_t; |
| 58 | #define PTHREAD_XMQ_NONE 0 ///< No flags specified (default behaviour) |
| 59 | #define PTHREAD_XMQ_FRONT 1 ///< Send to front of the queue (scheduled for next receive) |
| 60 | #define PTHREAD_XMQ_BACK PTHREAD_XMQ_NONE ///< Send to back of the queue (default) |
| 61 | #define PTHREAD_XMQ_PEEK 2 ///< Only peek, do not remove received item |
| 62 | #define PTHREAD_XMQ_RECV PTHREAD_XMQ_NONE ///< Remove received item from queue (default) |
| 63 | #define PTHREAD_XMQ_OVERW 4 ///< Overwrite item if queue full |
| 64 | |
| 65 | typedef struct pthread_mq_t { |
| 66 | pthread_mutex_t lock; |
| 67 | pthread_cond_t cond_readable; |
| 68 | pthread_cond_t cond_writable; |
| 69 | uint8_t * data; |
| 70 | size_t msg_size; |
| 71 | size_t msg_count; |
| 72 | size_t msg_count_max; |
| 73 | size_t head_idx; |
| 74 | char * name; |
| 75 | } pthread_mq_t; |
| 76 | |
| 77 | bool pthread_mq_init(pthread_mq_t *mq, size_t msg_size, size_t msg_count_max); |
| 78 | void pthread_mq_free(pthread_mq_t *mq); |
| 79 | |
| 80 | bool pthread_mq_reset(pthread_mq_t *mq); |
| 81 | bool pthread_mq_send_generic(pthread_mq_t *mq, void * data, pthread_mq_flags_t flags, const struct timespec *restrict abs_timeout); |
| 82 | bool pthread_mq_receive_generic(pthread_mq_t *mq, void * data, pthread_mq_flags_t flags, const struct timespec *restrict abs_timeout); |
| 83 | |
| 84 | size_t pthread_mq_waiting(pthread_mq_t *mq); |
| 85 | size_t pthread_mq_vacant(pthread_mq_t *mq); |
| 86 | |
| 87 | // Multi mutex locking |
| 88 | |
| 89 | #define pthread_mutex_swap(a, b) { pthread_mutex_t *s; s = (a); a = (b); b = s; } |
| 90 | |
| 91 | #define pthread_mutex_lock_two(a,b) pthread_mutex_timedlock_multi_generic((pthread_mutex_t *[2]){(a), (b)}, 2, true, NULL) |
| 92 | #define pthread_mutex_timedlock_two(a,b,tm) pthread_mutex_timedlock_multi_generic((pthread_mutex_t *[2]){(a), (b)}, 2, true, (tm)) |
| 93 | #define pthread_mutex_trylock_two(a,b) pthread_mutex_timedlock_multi_generic((pthread_mutex_t *[2]){(a), (b)}, 2, false, NULL) |
| 94 | |
| 95 | #define pthread_mutex_lock_multi(lcks,cnt) pthread_mutex_timedlock_multi_generic((lcks),(cnt),true,NULL) |
| 96 | #define pthread_mutex_timedlock_multi(lcks,cnt,tm) pthread_mutex_timedlock_multi_generic((lcks),(cnt),true,(tm)) |
| 97 | #define pthread_mutex_trylock_multi(lcks,cnt) pthread_mutex_timedlock_multi_generic((lcks),(cnt),false,NULL) |
| 98 | |
| 99 | int pthread_mutex_timedlock_multi_generic(pthread_mutex_t **lck, int cnt, bool block, const struct timespec *restrict abs_timeout); |
| 100 | |
| 101 | |
| 102 | #endif //__PTHREAD_EXTRA_H__ |