int main()
{
int size;
mydisk_init("diskfile", MAX_BLOCKS, 0);
init_cache(CACHED_BLOCKS);
/* Test case 1: read/write block */
size = BLOCK_SIZE;
memset(buffer, 0, size);
strcpy(buffer, "hello world\n");
mydisk_write_block(0, buffer);
memset(buffer2, 0, size);
mydisk_read_block(0, buffer2);
check_test(memcmp(buffer2, "hello world\n", 13));
/* Test case 2: basic read/write */
memset(buffer, 0, size);
mydisk_read(0, 13, buffer);
check_test(memcmp(buffer, "hello world\n", 13));
/* Test case 3: read in the middle */
memset(buffer, 0, BLOCK_SIZE);
mydisk_read(8, 5, buffer);
check_test(memcmp(buffer, "rld\n", 5));
/* Test case 4: read/write across blocks */
size = BLOCK_SIZE;
rand_str(buffer, size);
mydisk_write(144, size, buffer);
memset(buffer2, 0, size);
mydisk_read(144, size, buffer2);
check_test(memcmp(buffer, buffer2, size));
/* Test case 5: large read/write */
size = BLOCK_SIZE * (MAX_BLOCKS - 1);
rand_str(buffer, size);
mydisk_write(276, size, buffer);
mydisk_read(276, size, buffer2);
check_test(memcmp(buffer, buffer2, size));
/* Test case 6~9: read/write exception */
check_test(!mydisk_read(-1, 0, buffer));
check_test(!mydisk_read(0, -10, buffer));
check_test(!mydisk_read(100, BLOCK_SIZE * MAX_BLOCKS, buffer));
check_test(mydisk_write(0, 0, buffer));
check_test(stress_test());
check_test(stress_test2());
close_cache();
mydisk_close();
return 0;
}
void
build_cache()
{
if (cached_ng == ng && cached_absfirst == absfirst
&& time((time_t*)NULL) < cached_time + 6*60*60L) {
grow_cache(lastart);
rc_to_bits();
if (sel_mode == SM_ARTICLE)
set_selector(sel_mode, sel_artsort);
else
set_selector(sel_threadmode, sel_threadsort);
thread_grow();
return;
}
close_cache();
cached_ng = ng;
cached_absfirst = absfirst;
cached_time = time((time_t*)NULL);
cached_cnt = lastart-absfirst+2 + 5;
article_list = (ARTICLE*)
safemalloc((MEM_SIZE)(cached_cnt * sizeof (ARTICLE)));
bzero((char*)article_list, cached_cnt * sizeof (ARTICLE));
subj_hash = hashcreate(201, subject_cmp); /*TODO: pick a better size */
rc_to_bits(); /* sets firstart */
first_cached = thread_always? absfirst : firstart;
last_cached = first_cached-1;
cached_all_in_range = FALSE;
#ifdef PENDING
subj_to_get = xref_to_get = firstart;
#endif
#ifndef USE_NNTP
setmissingbits();
#endif
/* Cache as much data in advance as possible, possibly threading
** articles as we go. */
thread_open();
}
