Rev 5 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* |
| 2 | * Project: S.Ha.R.K. |
||
| 3 | * |
||
| 4 | * Coordinators: |
||
| 5 | * Giorgio Buttazzo <giorgio@sssup.it> |
||
| 6 | * Paolo Gai <pj@gandalf.sssup.it> |
||
| 7 | * |
||
| 8 | * Authors : |
||
| 9 | * Massimiliano Giorgi <massy@gandalf.sssup.it> |
||
| 10 | * (see the web pages for full authors list) |
||
| 11 | * |
||
| 12 | * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy) |
||
| 13 | * |
||
| 14 | * http://www.sssup.it |
||
| 15 | * http://retis.sssup.it |
||
| 16 | * http://shark.sssup.it |
||
| 17 | */ |
||
| 18 | |||
| 19 | #include <ll/sys/types.h> |
||
| 20 | #include <ll/stdlib.h> |
||
| 21 | |||
| 22 | #include <kernel/func.h> |
||
| 23 | #include <kernel/mem.h> |
||
| 24 | #include <kernel/log.h> |
||
| 25 | |||
| 26 | #include <trace/types.h> |
||
| 27 | #include <trace/trace.h> |
||
| 28 | #include <trace/queues.h> |
||
| 29 | |||
| 30 | #include <fs/fs.h> |
||
| 31 | |||
| 32 | #include <unistd.h> |
||
| 33 | #include <fcntl.h> |
||
| 34 | #include <limits.h> |
||
| 35 | |||
| 5 | pj | 36 | /* this file implement a fixed queue, that is simply an array that |
| 37 | is filled with the events until it is full. After that, all the other |
||
| 38 | events are discarded. */ |
||
| 39 | |||
| 40 | |||
| 41 | |||
| 42 | |||
| 2 | pj | 43 | typedef struct TAGfixed_queue_t { |
| 44 | int size; |
||
| 45 | int index; |
||
| 46 | char *filename; |
||
| 47 | int uniq; |
||
| 48 | |||
| 5 | pj | 49 | trc_event_t table[0]; |
| 50 | /* Yes, 0!... the elements are allocated |
||
| 51 | in a dirty way into the kern_alloc into fixed_create */ |
||
| 2 | pj | 52 | } fixed_queue_t; |
| 53 | |||
| 5 | pj | 54 | /* This function simply return an event to fill (only if the fixed table |
| 55 | is not yet full) */ |
||
| 2 | pj | 56 | static trc_event_t *fixed_get(fixed_queue_t *queue) |
| 57 | { |
||
| 58 | if (queue->index>=queue->size) return NULL; |
||
| 59 | return &queue->table[queue->index++]; |
||
| 60 | } |
||
| 61 | |||
| 5 | pj | 62 | /* since get returns the correct event address, |
| 63 | the post function does nothing... */ |
||
| 2 | pj | 64 | static int fixed_post(fixed_queue_t *queue) |
| 65 | { |
||
| 66 | return 0; |
||
| 67 | } |
||
| 68 | |||
| 69 | static TRC_FIXED_PARMS defaultargs; |
||
| 70 | static int once=0; |
||
| 71 | |||
| 72 | static int fixed_create(trc_queue_t *queue, TRC_FIXED_PARMS *args) |
||
| 73 | { |
||
| 74 | fixed_queue_t *ptr; |
||
| 75 | |||
| 5 | pj | 76 | /* initialize the default arguments for the fixed queue */ |
| 2 | pj | 77 | if (!once) { |
| 78 | /* well... this func is called when the system is not running! */ |
||
| 79 | once=1; |
||
| 80 | trc_fixed_default_parms(defaultargs); |
||
| 81 | } |
||
| 82 | if (args==NULL) args=&defaultargs; |
||
| 83 | |||
| 5 | pj | 84 | /* allocate the fixed queue data structure plus the array of events */ |
| 2 | pj | 85 | ptr=(fixed_queue_t*)kern_alloc(sizeof(fixed_queue_t)+ |
| 86 | sizeof(trc_event_t)*(args->size+1)); |
||
| 87 | if (ptr==NULL) return -1; |
||
| 88 | |||
| 5 | pj | 89 | /* set the current queue pointers and data */ |
| 2 | pj | 90 | queue->get=(trc_event_t*(*)(void*))fixed_get; |
| 91 | queue->post=(int(*)(void*))fixed_post; |
||
| 92 | queue->data=ptr; |
||
| 93 | |||
| 94 | ptr->size=args->size; |
||
| 95 | ptr->index=0; |
||
| 96 | ptr->filename=args->filename; |
||
| 97 | return 0; |
||
| 98 | } |
||
| 99 | |||
| 100 | static TASK fixed_shutdown(fixed_queue_t *queue) |
||
| 101 | { |
||
| 102 | char pathname[PATH_MAX]; |
||
| 103 | int h; |
||
| 104 | |||
| 105 | printk(KERN_DEBUG "<fixed queuesize:%i>",queue->index); |
||
| 106 | |||
| 107 | if (queue->filename==NULL) trc_create_name("fix",queue->uniq,pathname); |
||
| 108 | else trc_create_name(queue->filename,0,pathname); |
||
| 109 | |||
| 110 | h=open("/TEMP/FIX1",O_CREAT|O_TRUNC|O_WRONLY); |
||
| 111 | if (h!=-1) { |
||
| 112 | write(h,queue->table,queue->index*sizeof(trc_event_t)); |
||
| 113 | close(h); |
||
| 114 | printk(KERN_NOTICE "tracer file %s created!",pathname); |
||
| 115 | } else { |
||
| 116 | printk(KERN_NOTICE "tracer file %s not created!",pathname); |
||
| 117 | } |
||
| 118 | |||
| 119 | resume_fs_shutdown(); |
||
| 120 | return NULL; |
||
| 121 | } |
||
| 122 | |||
| 123 | static int fixed_activate(fixed_queue_t *queue, int uniq) |
||
| 124 | { |
||
| 125 | queue->uniq=uniq; |
||
| 126 | return 0; |
||
| 127 | } |
||
| 128 | |||
| 129 | static int fixed_terminate(fixed_queue_t *queue) |
||
| 130 | { |
||
| 131 | SOFT_TASK_MODEL model; |
||
| 132 | PID pid; |
||
| 133 | |||
| 134 | suspend_fs_shutdown(); |
||
| 135 | |||
| 136 | //nrt_task_default_model(model); |
||
| 137 | //nrt_task_def_system(model); |
||
| 138 | //nrt_task_def_arg(model,queue); |
||
| 139 | |||
| 140 | soft_task_default_model(model); |
||
| 141 | soft_task_def_system(model); |
||
| 142 | soft_task_def_notrace(model); |
||
| 143 | soft_task_def_periodic(model); |
||
| 144 | soft_task_def_period(model,50000); |
||
| 145 | soft_task_def_met(model,10000); |
||
| 146 | soft_task_def_wcet(model,10000); |
||
| 147 | soft_task_def_arg(model,queue); |
||
| 148 | |||
| 149 | pid=task_create("ShutTrcFix",fixed_shutdown,&model,NULL); |
||
| 150 | if (pid==-1) { |
||
| 151 | printk(KERN_ERR "can't start tracer shutdown task (fixed)"); |
||
| 152 | return -1; |
||
| 153 | } else |
||
| 154 | task_activate(pid); |
||
| 155 | |||
| 156 | return 0; |
||
| 157 | } |
||
| 158 | |||
| 159 | int trc_register_fixed_queue(void) |
||
| 160 | { |
||
| 161 | int res; |
||
| 162 | |||
| 163 | res=trc_register_queuetype(TRC_FIXED_QUEUE, |
||
| 164 | (int(*)(trc_queue_t*,void*))fixed_create, |
||
| 165 | (int(*)(void*,int))fixed_activate, |
||
| 166 | (int(*)(void*))fixed_terminate |
||
| 167 | ); |
||
| 168 | |||
| 169 | if (res!=0) printk(KERN_WARNING "can't register tracer fixed queue"); |
||
| 170 | return res; |
||
| 171 | } |