int main(int argc, char *argv[]) {
if (argc < 2) {
printf("You must provide a number of free slots\n");
exit(1);
}
signal(SIGINT, intHandler);
printf("%d\n", atoi(argv[1]));
MY_LEN = atoi(argv[1]);
setup_shared_memory();
attach_shared_memory();
init_shared_memory();
job printJob;
while (1) {
int semvalue;
sem_getvalue(&(shared_mem->full), &semvalue);
if (semvalue == 0) {
printf("No requests in buffer, printer sleeps\n");
}
sem_wait(&(shared_mem->full));
sem_wait(&(shared_mem->binary));
// take a job
int index = shared_mem->headIndex;
shared_mem->headIndex = (shared_mem->headIndex + 1) % shared_mem->bufferSize;
job *bufferJob = &(shared_mem->buffer[index]);
printJob.id = bufferJob->id;
printJob.pages = bufferJob->pages;
sem_post(&(shared_mem->binary));
sem_post(&(shared_mem->empty));
// print job
printf("Printer starts printing %d pages from client %d at Buffer[%d]\n", printJob.pages, printJob.id, index);
// go to sleep
usleep(printJob.pages * TIME_PER_PAGE * 1000000);
printf("Printer finishes printing %d pages from client %d at Buffer[%d]\n", printJob.pages, printJob.id, index);
}
return 0;
}
int init_dir_sync(music_globals_t* music_globals){
int status = 0;
apr_status_t rv = 0;
int i = 0;
db_query_t* db_query;
db_config_t* db_config;
char dbd_error_message[255];
const char* dbd_error;
apr_thread_t* thread_sync_dir;
#ifdef WITH_MP3
//Init MP3 support
mpg123_init();
#endif
//Find db_params by finding a query we need and connecting to the database that query depends on
status = indexer_get_db_object (file_indexer, "song_id", &(file_db_obj));
if(status != 0){
return -9;
}
//For every music directory create a shared struct
for(i = 0; i < music_globals->music_dirs->nelts; i++){
dir_sh_stats_t* stats;
dir_t* dir = &(((dir_t*)music_globals->music_dirs->elts)[i]);
dir_sync_thread_t* dir_sync_thread = apr_pcalloc(music_globals->pool, sizeof(dir_sync_thread_t));
//Setup dir_sync_thread
dir_sync_thread->db_config = db_config;
dir_sync_thread->pool = music_globals->pool;
dir_sync_thread->error_messages = music_globals->error_messages;
dir_sync_thread->dir = dir;
//Setup Dir
dir->shm_file = apr_pstrcat(music_globals->pool,music_globals->tmp_dir,"/mp_dir_sync[",apr_itoa(music_globals->pool, i),"]",NULL);
status = setup_shared_memory(&(dir->shm),sizeof(dir_sh_stats_t),dir->shm_file, music_globals->pool);
if(status != 0){
return status;
}
//Create thread to connect to database and synchronize
stats = (dir_sh_stats_t*)apr_shm_baseaddr_get(dir->shm);
dir->stats = stats;
stats->num_files = NULL;
stats->sync_progress = 0.0;
stats->files_scanned = 0;
rv = apr_thread_create(&thread_sync_dir,NULL, sync_dir, (void*) dir_sync_thread, music_globals->pool);
if(rv != APR_SUCCESS){
return rv;
}
apr_pool_cleanup_register(music_globals->pool, dir->shm,(void*) apr_shm_destroy , apr_pool_cleanup_null);
}
return status;
}