| 1 | #define __PTHREAD_EXTRA_INTERNAL |
| 2 | |
| 3 | #include <assert.h> |
| 4 | #include <pthread.h> |
| 5 | #include <pthread_extra.h> |
| 6 | |
| 7 | //Static array with user data for all thread handles |
| 8 | //TODO: perhaps use something more sophisticated like linked list? |
| 9 | pthread_user_data_internal_t pthread_user_data[PTHREAD_XTHREADS_MAX+1] = {{.tid=PTHREAD_XNULL}}; |
| 10 | |
| 11 | //Get pointer to internal record tied to specified thread |
| 12 | pthread_user_data_internal_t* pthread_user_data_internal(pthread_t thread) { |
| 13 | //Return NULL if requested thread handle is NULL |
| 14 | if(pthread_equal(thread, PTHREAD_XNULL)) return NULL; |
| 15 | |
| 16 | //Find if the thread is already registered, add it if not |
| 17 | //FIXME: recycle slots of destroyed threads!!! |
| 18 | pthread_t i; |
| 19 | for(i = 0; i<PTHREAD_XTHREADS_MAX; i++) { |
| 20 | if(pthread_equal(pthread_user_data[i].tid, PTHREAD_XNULL)) { |
| 21 | //FIXME: Should be locking for addition to the array!!!! |
| 22 | pthread_user_data[i+1].tid = PTHREAD_XNULL; |
| 23 | pthread_user_data[i].tid = thread; |
| 24 | break; |
| 25 | } |
| 26 | if(pthread_equal(pthread_user_data[i].tid, thread)) break; |
| 27 | } |
| 28 | //Return pointer |
| 29 | return &pthread_user_data[i]; |
| 30 | } |
| 31 | |
| 32 | //Get pointer to user specified pointer of that thread |
| 33 | void** pthread_user_data_ptr(pthread_t thread) { |
| 34 | return &pthread_user_data_internal(thread)->usr; |
| 35 | } |
| 36 | |
| 37 | //Set user specified pointer for thread |
| 38 | void pthread_user_data_set(pthread_t thread, void *usr) { |
| 39 | *(pthread_user_data_ptr(thread)) = usr; |
| 40 | } |
| 41 | |
| 42 | //Get user specified pointer for thread |
| 43 | void* pthread_user_data_get(pthread_t thread) { |
| 44 | return *(pthread_user_data_ptr(thread)); |
| 45 | } |
| 46 | |
| 47 | //Remove canceled thread from user data registry |
| 48 | int pthread_user_data_remove(pthread_t thread) { |
| 49 | //FIXME: not implemented yet! |
| 50 | (void) thread; |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | //User data cleanup handler to be registered with pthread_cleanup_push() |
| 55 | void pthread_user_data_cleanup( void * arg ) { |
| 56 | pthread_t t = (pthread_t)arg; |
| 57 | assert(pthread_equal(t, pthread_self()) && "Pthread_self() is not working in cleanup context!"); |
| 58 | pthread_user_data_remove(t); |
| 59 | } |