static pool* pool_acquire(struct caml_heap_state* local) {
pool* r;
if (local->num_free_pools > 0) {
r = local->free_pools;
local->free_pools = r->next;
local->num_free_pools--;
} else {
caml_plat_lock(&pool_freelist.lock);
if (!pool_freelist.free) {
void* mem = caml_mem_map(Bsize_wsize(POOL_WSIZE) * POOLS_PER_ALLOCATION,
Bsize_wsize(POOL_WSIZE), 0 /* allocate */);
int i;
if (mem) {
pool_freelist.free = mem;
for (i=1; i<POOLS_PER_ALLOCATION; i++) {
r = (pool*)(((uintnat)mem) + ((uintnat)i) * Bsize_wsize(POOL_WSIZE));
r->next = pool_freelist.free;
r->owner = 0;
pool_freelist.free = r;
}
}
}
r = pool_freelist.free;
if (r)
pool_freelist.free = r->next;
caml_plat_unlock(&pool_freelist.lock);
}
if (r) Assert (r->owner == 0);
return r;
}
void caml_init_domains(uintnat minor_size) {
int i;
uintnat size;
void* heaps_base;
/* sanity check configuration */
if (caml_mem_round_up_pages(1 << Minor_heap_align_bits) != (1 << Minor_heap_align_bits))
caml_fatal_error("Minor_heap_align_bits misconfigured for this platform");
/* reserve memory space for minor heaps */
size = (uintnat)1 << (Minor_heap_sel_bits + Minor_heap_align_bits);
/* To ensure Is_foreign gives no false positives, we reserve twice
the address space needed and only use the first half */
heaps_base = caml_mem_map(size*2, size*2, 1 /* reserve_only */);
if (!heaps_base) caml_raise_out_of_memory();
minor_heaps_base = (uintnat) heaps_base;
caml_plat_mutex_init(&all_domains_lock);
for (i = 0; i < Max_domains; i++) {
struct dom_internal* dom = &all_domains[i];
caml_plat_mutex_init(&dom->roots_lock);
dom->running = 0;
dom->state.id = i;
dom->tls_area = minor_heaps_base +
(uintnat)(1 << Minor_heap_align_bits) * (uintnat)i;
dom->tls_area_end =
caml_mem_round_up_pages(dom->tls_area +
sizeof(struct caml_domain_state));
dom->minor_heap_area = /* skip guard page */
caml_mem_round_up_pages(dom->tls_area_end + 1);
dom->minor_heap_area_end =
dom->minor_heap_area + (1 << Minor_heap_align_bits);
}
create_domain(minor_size, 1);
if (!domain_self) caml_fatal_error("Failed to create main domain");
caml_init_global_roots();
caml_init_signal_handling();
}
