/** How many bytes are not assigned to any pool?
*
* Undefined behaviour if called before the memory manager is initialized. */
size_t mm_no_pool_size( int32 include_reserve )
{
size_t size;
HQASSERT( mm_arena, "mm_no_pool_size called before mm_init" );
/* Not synchronized because accuracy is not required. */
size = mm_total_size() - mps_arena_committed(mm_arena);
/* Note that the reserve may be re-used for other things if we run low
* so we count it as 'unassigned' memory, unless include_reserve states
* otherwise. */
if ( include_reserve )
size += mm_reserve_size();
return size + mps_arena_spare_committed(mm_arena);
}
static void test(void)
{
mps_arena_t arena;
mps_pool_t pool;
mps_thr_t thread;
mps_root_t root;
mps_fmt_t format;
mps_chain_t chain;
mycell *cells;
int h,i,j,k,l;
mycell *pobj;
mycell *ambig[NAPS];
size_t size0, size1;
long mdiff = 0;
size_t bytes;
size_t alignment;
mps_addr_t q;
int nextid = 0x1000000;
/* turn on comments about copying and scanning */
formatcomments = VERBOSE;
fixcomments = VERBOSE;
cdie(mps_arena_create(&arena, mps_arena_class_vm(), mmqaArenaSIZE),
"create arena");
die(mps_thread_reg(&thread, arena), "register thread");
die(mps_root_create_reg(&root, arena, mps_rank_ambig(), 0, thread,
mps_stack_scan_ambig, stackpointer, 0),
"create root");
die(mps_fmt_create_A(&format, arena, &fmtA), "create format");
cdie(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
die(mmqa_pool_create_chain(&pool, arena, mps_class_amc(), format, chain),
"create pool");
for (i = 0; i < NAPS; i++) {
die(mps_ap_create(&ap[i], pool, mps_rank_exact()), "create ap");
ap_state[i] = 0;
}
cells = allocone(ap[0], NCELLS);
/* ap_state can have the following values:
0 before reserve
1 after reverse
2 after init
3 after I=A
0 after commit
*/
for(h=0; h<ITERATIONS; h++) {
comment("%i of %i", h, ITERATIONS);
for(j=0; j<1000; j++) {
if (j == 500) {
size0 = mps_arena_committed(arena) - mps_arena_spare_committed(arena);
mps_arena_collect(arena);
size1 = mps_arena_committed(arena) - mps_arena_spare_committed(arena);
asserts(((long) size1)-((long) size0) < 1024*1024,
"Collection made arena bigger: %lu -> %lu",
(unsigned long) size0, (unsigned long) size1);
if (((long) size1)-((long) size0) > mdiff) {
mdiff = ((long) size1) - ((long) size0);
}
}
i = ranint(NAPS);
switch (ap_state[i]) {
case 0:
nrefs[i] = NUMREFS;
bytes = offsetof(struct data, ref)+nrefs[i]*sizeof(struct refitem);
alignment = MPS_PF_ALIGN;
bytes = (bytes+alignment-1)&~(alignment-1);
s[i] = bytes;
die(mps_reserve(&q, ap[i], s[i]), "reserve: ");
p[i] = q;
p[i]->data.tag = 0xD033E2A6;
p[i]->data.id = nextid;
ap_state[i] = 1;
commentif(VERBOSE, "%i: reserve %li at %p", i, nextid, q);
nextid +=1;
break;
case 1:
commentif(VERBOSE, "%i: init %li", i, p[i]->data.id);
p[i]->data.tag = MCdata;
p[i]->data.numrefs = nrefs[i];
p[i]->data.size = s[i];
ap_state[i] = 2;
for (k=0; k<nrefs[i]; k++) {
if PNULL {
p[i]->data.ref[k].addr = NULL;
p[i]->data.ref[k].id = 0;
} else {
l = ranint(NCELLS);
pobj = getref(cells, l);
p[i]->data.ref[k].addr = pobj;
p[i]->data.ref[k].id = (pobj==NULL ? 0 : pobj->data.id);
}
commentif(VERBOSE, " ref %i -> %li", k, p[i]->data.ref[k].id);
}
break;
case 2:
commentif(VERBOSE, "%i: begin commit %li", i, p[i]->data.id);
ambig[i] = p[i];
ap[i]->init = ap[i]->alloc;
ap_state[i] = 3;
break;
case 3:
commentif(VERBOSE, "%i: end commit %li", i, p[i]->data.id);
q=p[i];
if (ap[i]->limit != 0 || mps_ap_trip(ap[i], p[i], s[i])) {
l = ranint(NCELLS);
setref(cells, l, q);
commentif(VERBOSE, "%i -> %i", i, l);
}
ap_state[i] = 0;
ambig[i] = NULL;
break;
}
}
checkfrom(cells);
}
