void caml_init_gc (uintnat minor_size, uintnat major_size,
uintnat major_incr, uintnat percent_fr,
uintnat percent_m)
{
uintnat major_heap_size = Bsize_wsize (norm_heapincr (major_size));
if (caml_page_table_initialize(Bsize_wsize(minor_size) + major_heap_size)) {
caml_fatal_error ("OCaml runtime error: cannot initialize page table\n");
}
caml_set_minor_heap_size (Bsize_wsize (norm_minsize (minor_size)));
caml_major_heap_increment = Bsize_wsize (norm_heapincr (major_incr));
caml_percent_free = norm_pfree (percent_fr);
caml_percent_max = norm_pmax (percent_m);
caml_init_major_heap (major_heap_size);
caml_gc_message (0x20, "Initial minor heap size: %luk bytes\n",
caml_minor_heap_size / 1024);
caml_gc_message (0x20, "Initial major heap size: %luk bytes\n",
major_heap_size / 1024);
caml_gc_message (0x20, "Initial space overhead: %lu%%\n", caml_percent_free);
caml_gc_message (0x20, "Initial max overhead: %lu%%\n", caml_percent_max);
caml_gc_message (0x20, "Initial heap increment: %luk bytes\n",
caml_major_heap_increment / 1024);
caml_gc_message (0x20, "Initial allocation policy: %d\n",
caml_allocation_policy);
}
CAMLprim value caml_gc_set(value v)
{
uintnat newpf, newpm;
asize_t newheapincr;
asize_t newminsize;
uintnat oldpolicy;
caml_verb_gc = Long_val (Field (v, 3));
#ifndef NATIVE_CODE
caml_change_max_stack_size (Long_val (Field (v, 5)));
#endif
newpf = norm_pfree (Long_val (Field (v, 2)));
if (newpf != caml_percent_free) {
caml_percent_free = newpf;
caml_gc_message (0x20, "New space overhead: %d%%\n", caml_percent_free);
}
newpm = norm_pmax (Long_val (Field (v, 4)));
if (newpm != caml_percent_max) {
caml_percent_max = newpm;
caml_gc_message (0x20, "New max overhead: %d%%\n", caml_percent_max);
}
newheapincr = Bsize_wsize (norm_heapincr (Long_val (Field (v, 1))));
if (newheapincr != caml_major_heap_increment) {
caml_major_heap_increment = newheapincr;
caml_gc_message (0x20, "New heap increment size: %luk bytes\n",
caml_major_heap_increment/1024);
}
oldpolicy = caml_allocation_policy;
caml_set_allocation_policy (Long_val (Field (v, 6)));
if (oldpolicy != caml_allocation_policy) {
caml_gc_message (0x20, "New allocation policy: %d\n",
caml_allocation_policy);
}
/* Minor heap size comes last because it will trigger a minor collection
(thus invalidating [v]) and it can raise [Out_of_memory]. */
newminsize = norm_minsize (Bsize_wsize (Long_val (Field (v, 0))));
if (newminsize != caml_minor_heap_size) {
caml_gc_message (0x20, "New minor heap size: %luk bytes\n",
newminsize/1024);
caml_set_minor_heap_size (newminsize);
}
return Val_unit;
}
void caml_init_gc (uintnat minor_size, uintnat major_size,
uintnat major_incr, uintnat percent_fr,
uintnat percent_m)
{
uintnat major_heap_size = Bsize_wsize (norm_heapincr (major_size));
caml_set_minor_heap_size (Bsize_wsize (norm_minsize (minor_size)));
caml_major_heap_increment = Bsize_wsize (norm_heapincr (major_incr));
caml_percent_free = norm_pfree (percent_fr);
caml_percent_max = norm_pmax (percent_m);
caml_init_major_heap (major_heap_size);
caml_gc_message (0x20, "Initial minor heap size: %luk bytes\n",
caml_minor_heap_size / 1024);
caml_gc_message (0x20, "Initial major heap size: %luk bytes\n",
major_heap_size / 1024);
caml_gc_message (0x20, "Initial space overhead: %lu%%\n", caml_percent_free);
caml_gc_message (0x20, "Initial max overhead: %lu%%\n", caml_percent_max);
caml_gc_message (0x20, "Initial heap increment: %luk bytes\n",
caml_major_heap_increment / 1024);
}
/* [minor_size] and [major_size] are numbers of words
[major_incr] is either a percentage or a number of words */
void caml_init_gc (uintnat minor_size, uintnat major_size,
uintnat major_incr, uintnat percent_fr,
uintnat percent_m, uintnat window)
{
uintnat major_heap_size =
Bsize_wsize (caml_normalize_heap_increment (major_size));
CAML_INSTR_INIT ();
if (caml_init_alloc_for_heap () != 0){
caml_fatal_error ("cannot initialize heap: mmap failed\n");
}
if (caml_page_table_initialize(Bsize_wsize(minor_size) + major_heap_size)){
caml_fatal_error ("OCaml runtime error: cannot initialize page table\n");
}
caml_set_minor_heap_size (Bsize_wsize (norm_minsize (minor_size)));
caml_major_heap_increment = major_incr;
caml_percent_free = norm_pfree (percent_fr);
caml_percent_max = norm_pmax (percent_m);
caml_init_major_heap (major_heap_size);
caml_major_window = norm_window (window);
caml_gc_message (0x20, "Initial minor heap size: %luk words\n",
caml_minor_heap_wsz / 1024);
caml_gc_message (0x20, "Initial major heap size: %luk bytes\n",
major_heap_size / 1024);
caml_gc_message (0x20, "Initial space overhead: %lu%%\n", caml_percent_free);
caml_gc_message (0x20, "Initial max overhead: %lu%%\n", caml_percent_max);
if (caml_major_heap_increment > 1000){
caml_gc_message (0x20, "Initial heap increment: %luk words\n",
caml_major_heap_increment / 1024);
}else{
caml_gc_message (0x20, "Initial heap increment: %lu%%\n",
caml_major_heap_increment);
}
caml_gc_message (0x20, "Initial allocation policy: %d\n",
caml_allocation_policy);
caml_gc_message (0x20, "Initial smoothing window: %d\n",
caml_major_window);
}
void caml_init_gc (uintnat minor_size, uintnat major_size,
uintnat major_incr, uintnat percent_fr,
uintnat percent_m)
{
uintnat major_heap_size = Bsize_wsize (norm_heapincr (major_size));
#ifdef DEBUG
caml_gc_message (-1, "### O'Caml runtime: debug mode ###\n", 0);
#endif
caml_set_minor_heap_size (Bsize_wsize (norm_minsize (minor_size)));
caml_major_heap_increment = Bsize_wsize (norm_heapincr (major_incr));
caml_percent_free = norm_pfree (percent_fr);
caml_percent_max = norm_pmax (percent_m);
caml_init_major_heap (major_heap_size);
caml_gc_message (0x20, "Initial minor heap size: %luk bytes\n",
caml_minor_heap_size / 1024);
caml_gc_message (0x20, "Initial major heap size: %luk bytes\n",
major_heap_size / 1024);
caml_gc_message (0x20, "Initial space overhead: %lu%%\n", caml_percent_free);
caml_gc_message (0x20, "Initial max overhead: %lu%%\n", caml_percent_max);
caml_gc_message (0x20, "Initial heap increment: %luk bytes\n",
caml_major_heap_increment / 1024);
}
CAMLprim value caml_gc_set(value v)
{
uintnat newpf, newpm;
asize_t newheapincr;
asize_t newminwsz;
uintnat oldpolicy;
CAML_INSTR_SETUP (tmr, "");
caml_verb_gc = Long_val (Field (v, 3));
#ifndef NATIVE_CODE
caml_change_max_stack_size (Long_val (Field (v, 5)));
#endif
newpf = norm_pfree (Long_val (Field (v, 2)));
if (newpf != caml_percent_free){
caml_percent_free = newpf;
caml_gc_message (0x20, "New space overhead: %d%%\n", caml_percent_free);
}
newpm = norm_pmax (Long_val (Field (v, 4)));
if (newpm != caml_percent_max){
caml_percent_max = newpm;
caml_gc_message (0x20, "New max overhead: %d%%\n", caml_percent_max);
}
newheapincr = Long_val (Field (v, 1));
if (newheapincr != caml_major_heap_increment){
caml_major_heap_increment = newheapincr;
if (newheapincr > 1000){
caml_gc_message (0x20, "New heap increment size: %luk words\n",
caml_major_heap_increment/1024);
}else{
caml_gc_message (0x20, "New heap increment size: %lu%%\n",
caml_major_heap_increment);
}
}
oldpolicy = caml_allocation_policy;
caml_set_allocation_policy (Long_val (Field (v, 6)));
if (oldpolicy != caml_allocation_policy){
caml_gc_message (0x20, "New allocation policy: %d\n",
caml_allocation_policy);
}
/* This field was added in 4.03.0. */
if (Wosize_val (v) >= 8){
int old_window = caml_major_window;
caml_set_major_window (norm_window (Long_val (Field (v, 7))));
if (old_window != caml_major_window){
caml_gc_message (0x20, "New smoothing window size: %d\n",
caml_major_window);
}
}
/* Minor heap size comes last because it will trigger a minor collection
(thus invalidating [v]) and it can raise [Out_of_memory]. */
newminwsz = norm_minsize (Long_val (Field (v, 0)));
if (newminwsz != caml_minor_heap_wsz){
caml_gc_message (0x20, "New minor heap size: %luk words\n",
newminwsz / 1024);
caml_set_minor_heap_size (Bsize_wsize (newminwsz));
}
CAML_INSTR_TIME (tmr, "explicit/gc_set");
return Val_unit;
}
