void jl_gc_collect(void)
{
allocd_bytes = 0;
if (is_gc_enabled) {
JL_SIGATOMIC_BEGIN();
#ifdef GCTIME
double t0 = clock_now();
#endif
gc_mark();
#ifdef GCTIME
ios_printf(ios_stderr, "mark time %.3f ms\n", (clock_now()-t0)*1000);
#endif
#if defined(MEMPROFILE)
all_pool_stats();
big_obj_stats();
#endif
#ifdef GCTIME
t0 = clock_now();
#endif
sweep_weak_refs();
gc_sweep();
#ifdef GCTIME
ios_printf(ios_stderr, "sweep time %.3f ms\n", (clock_now()-t0)*1000);
#endif
run_finalizers();
JL_SIGATOMIC_END();
#ifdef OBJPROFILE
print_obj_profile();
htable_reset(&obj_counts, 0);
#endif
}
}
void jl_gc_collect(void)
{
size_t actual_allocd = allocd_bytes;
total_allocd_bytes += allocd_bytes;
allocd_bytes = 0;
if (is_gc_enabled) {
JL_SIGATOMIC_BEGIN();
jl_in_gc = 1;
#if defined(GCTIME) || defined(GC_FINAL_STATS)
double t0 = clock_now();
#endif
gc_mark();
#ifdef GCTIME
JL_PRINTF(JL_STDERR, "mark time %.3f ms\n", (clock_now()-t0)*1000);
#endif
#if defined(MEMPROFILE)
all_pool_stats();
big_obj_stats();
#endif
#ifdef GCTIME
t0 = clock_now();
#endif
sweep_weak_refs();
gc_sweep();
#ifdef GCTIME
JL_PRINTF(JL_STDERR, "sweep time %.3f ms\n", (clock_now()-t0)*1000);
#endif
int nfinal = to_finalize.len;
run_finalizers();
jl_in_gc = 0;
JL_SIGATOMIC_END();
#if defined(GC_FINAL_STATS)
total_gc_time += (clock_now()-t0);
total_freed_bytes += freed_bytes;
#endif
#ifdef OBJPROFILE
print_obj_profile();
htable_reset(&obj_counts, 0);
#endif
// tune collect interval based on current live ratio
#if defined(MEMPROFILE)
jl_printf(JL_STDERR, "allocd %ld, freed %ld, interval %ld, ratio %.2f\n",
actual_allocd, freed_bytes, collect_interval,
(double)freed_bytes/(double)actual_allocd);
#endif
if (freed_bytes < (7*(actual_allocd/10))) {
if (collect_interval <= 2*(max_collect_interval/5))
collect_interval = 5*(collect_interval/2);
}
else {
collect_interval = default_collect_interval;
}
freed_bytes = 0;
// if a lot of objects were finalized, re-run GC to finish freeing
// their storage if possible.
if (nfinal > 100000)
jl_gc_collect();
}
}
// 'eq' means unordered comparison is sufficient
static value_t compare_(value_t a, value_t b, int eq)
{
value_t guess = bounded_compare(a, b, BOUNDED_COMPARE_BOUND, eq);
if (guess == NIL) {
guess = cyc_compare(a, b, &equal_eq_hashtable, eq);
htable_reset(&equal_eq_hashtable, 512);
}
return guess;
}
DLLEXPORT
void jl_save_system_image(char *fname, char *startscriptname)
{
jl_gc_collect();
jl_gc_collect();
int en = jl_gc_is_enabled();
jl_gc_disable();
htable_reset(&backref_table, 50000);
ios_t f;
ios_file(&f, fname, 1, 1, 1, 1);
// orphan old Base module if present
jl_base_module = (jl_module_t*)jl_get_global(jl_main_module, jl_symbol("Base"));
// delete cached slow ASCIIString constructor if present
jl_methtable_t *mt = jl_gf_mtable((jl_function_t*)jl_ascii_string_type);
jl_array_t *spec = mt->defs->func->linfo->specializations;
if (spec->length > 0 &&
((jl_lambda_info_t*)jl_cellref(spec,0))->inferred == 0) {
mt->cache = JL_NULL;
mt->cache_arg1 = JL_NULL;
mt->defs->func->linfo->tfunc = (jl_value_t*)jl_null;
mt->defs->func->linfo->specializations = NULL;
}
jl_idtable_type = jl_get_global(jl_base_module, jl_symbol("ObjectIdDict"));
jl_serialize_value(&f, jl_array_type->env);
jl_serialize_value(&f, jl_main_module);
write_int32(&f, jl_get_t_uid_ctr());
write_int32(&f, jl_get_gs_ctr());
htable_reset(&backref_table, 0);
ios_t ss;
ios_file(&ss, startscriptname, 1, 0, 0, 0);
ios_copyall(&f, &ss);
ios_close(&ss);
ios_putc(0, &f);
ios_close(&f);
if (en) jl_gc_enable();
}
void jl_gc_collect(void)
{
allocd_bytes = 0;
if (is_gc_enabled) {
freed_bytes = 0;
JL_SIGATOMIC_BEGIN();
#if defined(GCTIME) || defined(GC_FINAL_STATS)
double t0 = clock_now();
#endif
gc_mark();
#ifdef GCTIME
JL_PRINTF(JL_STDERR, "mark time %.3f ms\n", (clock_now()-t0)*1000);
#endif
#if defined(MEMPROFILE)
all_pool_stats();
big_obj_stats();
#endif
#ifdef GCTIME
t0 = clock_now();
#endif
sweep_weak_refs();
gc_sweep();
#ifdef GCTIME
JL_PRINTF(JL_STDERR, "sweep time %.3f ms\n", (clock_now()-t0)*1000);
#endif
run_finalizers();
JL_SIGATOMIC_END();
#if defined(GC_FINAL_STATS)
total_gc_time += (clock_now()-t0);
total_freed_bytes += freed_bytes;
#endif
#ifdef OBJPROFILE
print_obj_profile();
htable_reset(&obj_counts, 0);
#endif
// tune collect interval based on current live ratio
if (freed_bytes < ((2*collect_interval)/5)) {
if (collect_interval <= (2*max_collect_interval)/5)
collect_interval = (5*collect_interval)/2;
}
else {
collect_interval = default_collect_interval;
}
}
}
DLLEXPORT
void jl_restore_system_image(char *fname)
{
ios_t f;
char *fpath = jl_find_file_in_path(fname);
if (ios_file(&f, fpath, 1, 0, 0, 0) == NULL) {
ios_printf(ios_stderr, "system image file not found\n");
exit(1);
}
#ifdef JL_GC_MARKSWEEP
int en = jl_gc_is_enabled();
jl_gc_disable();
#endif
tagtype_list = jl_alloc_cell_1d(0);
jl_array_type->env = jl_deserialize_value(&f);
jl_base_module = (jl_module_t*)jl_deserialize_value(&f);
jl_current_module = (jl_module_t*)jl_deserialize_value(&f);
jl_system_module = (jl_module_t*)jl_get_global(jl_base_module,
jl_symbol("System"));
jl_array_t *idtl = (jl_array_t*)jl_deserialize_value(&f);
// rehash IdTables
for(int i=0; i < idtl->length; i++) {
jl_value_t *v = jl_cellref(idtl, i);
jl_idtable_rehash(&((jl_array_t**)v)[1],
((jl_array_t**)v)[1]->length);
}
// cache builtin parametric types
for(int i=0; i < tagtype_list->length; i++) {
jl_value_t *v = jl_cellref(tagtype_list, i);
uint32_t uid=0;
if (jl_is_struct_type(v))
uid = ((jl_struct_type_t*)v)->uid;
else if (jl_is_bits_type(v))
uid = ((jl_bits_type_t*)v)->uid;
jl_cache_type_((jl_tag_type_t*)v);
if (jl_is_struct_type(v))
((jl_struct_type_t*)v)->uid = uid;
else if (jl_is_bits_type(v))
((jl_bits_type_t*)v)->uid = uid;
}
jl_get_builtin_hooks();
jl_get_system_hooks();
jl_boot_file_loaded = 1;
jl_typeinf_func = (jl_function_t*)jl_get_global(jl_system_module,
jl_symbol("typeinf_ext"));
jl_init_box_caches();
//jl_deserialize_finalizers(&f);
jl_set_t_uid_ctr(read_int32(&f));
jl_set_gs_ctr(read_int32(&f));
htable_reset(&backref_table, 0);
ios_t ss;
ios_mem(&ss, 0);
ios_copyuntil(&ss, &f, '\0');
ios_close(&f);
if (fpath != fname) free(fpath);
#ifdef JL_GC_MARKSWEEP
if (en) jl_gc_enable();
#endif
// TODO: there is no exception handler here!
jl_load_file_string(ss.buf);
ios_close(&ss);
}
DLLEXPORT
void jl_save_system_image(char *fname, char *startscriptname)
{
jl_gc_collect();
jl_gc_collect();
int en = jl_gc_is_enabled();
jl_gc_disable();
htable_reset(&backref_table, 50000);
ios_t f;
ios_file(&f, fname, 1, 1, 1, 1);
if (jl_current_module != jl_system_module) {
// set up for stage 1 bootstrap, where the System module is already
// loaded and we are loading an updated copy in a separate module.
// step 1: set Base.System = current_module
jl_binding_t *b = jl_get_binding_wr(jl_base_module, jl_symbol("System"));
b->value = (jl_value_t*)jl_current_module;
assert(b->constp);
// step 2: set current_module.Base = Base
jl_set_const(jl_current_module, jl_symbol("Base"), (jl_value_t*)jl_base_module);
// step 3: current_module.System = current_module
b = jl_get_binding_wr(jl_current_module, jl_symbol("System"));
b->value = (jl_value_t*)jl_current_module;
assert(b->constp);
// step 4: remove current_module.current_module
b = jl_get_binding_wr(jl_current_module, jl_current_module->name);
b->value = NULL; b->constp = 0;
// step 5: rename current_module to System
jl_current_module->name = jl_symbol("System");
// step 6: orphan old system module
jl_system_module = jl_current_module;
}
else {
// delete cached slow ASCIIString constructor
jl_methtable_t *mt = jl_gf_mtable((jl_function_t*)jl_ascii_string_type);
mt->cache = NULL;
mt->cache_1arg = NULL;
mt->defs->func->linfo->tfunc = (jl_value_t*)jl_null;
mt->defs->func->linfo->specializations = NULL;
}
jl_idtable_type = jl_get_global(jl_system_module, jl_symbol("IdTable"));
idtable_list = jl_alloc_cell_1d(0);
jl_serialize_value(&f, jl_array_type->env);
jl_serialize_value(&f, jl_base_module);
jl_serialize_value(&f, jl_current_module);
jl_serialize_value(&f, idtable_list);
//jl_serialize_finalizers(&f);
write_int32(&f, jl_get_t_uid_ctr());
write_int32(&f, jl_get_gs_ctr());
htable_reset(&backref_table, 0);
ios_t ss;
ios_file(&ss, startscriptname, 1, 0, 0, 0);
ios_copyall(&f, &ss);
ios_close(&ss);
ios_putc(0, &f);
ios_close(&f);
if (en) jl_gc_enable();
}
