void ObjectMemory::snapshot(STATE) {
// Assign all objects an object id...
ObjectMemory::GCInhibit inhibitor(root_state_->om);
// Walk the heap over and over until we don't create
// any more objects...
size_t last_seen = 0;
while(last_object_id != last_seen) {
last_seen = last_object_id;
ObjectWalker walker(root_state_->om);
GCData gc_data(state->vm());
// Seed it with the root objects.
walker.seed(gc_data);
Object* obj = walker.next();
while(obj) {
obj->id(state);
obj = walker.next();
}
}
// Now, save the current value of last_object_id, since thats
// so we can compare later to find all new objects.
last_snapshot_id = last_object_id;
std::cout << "Snapshot taken: " << last_snapshot_id << "\n";
}
void ObjectMemory::find_referers(Object* target, ObjectArray& result) {
ObjectMemory::GCInhibit inhibitor(this);
ObjectWalker walker(root_state_->om);
GCData gc_data(root_state_);
// Seed it with the root objects.
walker.seed(gc_data);
Object* obj = walker.next();
RefererFinder rf(this, target);
while(obj) {
rf.reset();
rf.scan_object(obj);
if(rf.found_p()) {
result.push_back(obj);
}
obj = walker.next();
}
}
Object* System::vm_deoptimize_all(STATE, Object* o_disable) {
ObjectWalker walker(state->om);
GCData gc_data(state);
// Seed it with the root objects.
walker.seed(gc_data);
Object* obj = walker.next();
int total = 0;
bool disable = RTEST(o_disable);
while(obj) {
if(CompiledMethod* cm = try_as<CompiledMethod>(obj)) {
if(VMMethod* vmm = cm->backend_method()) {
vmm->deoptimize(state, cm, disable);
}
total++;
}
obj = walker.next();
}
return Integer::from(state, total);
}
void VM::collect_maybe(CallFrame* call_frame) {
this->set_call_frame(call_frame);
// Stops all other threads, so we're only here by ourselves.
StopTheWorld guard(this);
GCData gc_data(this);
if(om->collect_young_now) {
if(shared.config.gc_show) {
std::cout << get_current_time() << " [GC] Running young gen\n";
}
om->collect_young_now = false;
om->collect_young(gc_data);
}
if(om->collect_mature_now) {
if(shared.config.gc_show) {
std::cout << get_current_time() << " [GC] Running mature gen\n";
}
om->collect_mature_now = false;
om->collect_mature(gc_data);
}
}
void VM::collect(CallFrame* call_frame) {
this->set_call_frame(call_frame);
// Stops all other threads, so we're only here by ourselves.
StopTheWorld guard(this);
GCData gc_data(this);
om->collect_young(gc_data);
om->collect_mature(gc_data);
}
void VM::collect(CallFrame* call_frame) {
this->set_call_frame(call_frame);
// Don't go any further unless we're allowed to GC.
if(!om->can_gc()) return;
// Stops all other threads, so we're only here by ourselves.
StopTheWorld guard(this);
GCData gc_data(this);
om->collect_young(gc_data);
om->collect_mature(gc_data);
om->run_finalizers(this);
}
void Env::find_all_compiled_code(compiled_code_iterator func, void* data) {
ObjectWalker walker(private_->state()->memory());
GCData gc_data(private_->state()->vm());
walker.seed(gc_data);
Env* env = private_->state()->vm()->tooling_env();
Object* obj = walker.next();
while(obj) {
if(CompiledCode* code = try_as<CompiledCode>(obj)) {
func(env, rbxti::o(code), data);
}
obj = walker.next();
}
}
void ObjectMemory::print_new_since_snapshot(STATE) {
// Assign all objects an object id...
ObjectMemory::GCInhibit inhibitor(root_state_->om);
ObjectWalker walker(root_state_->om);
GCData gc_data(root_state_);
// Seed it with the root objects.
walker.seed(gc_data);
Object* obj = walker.next();
// All reference ids are shifted up
native_int check_id = (native_int)last_snapshot_id << 1;
int count = 0;
int bytes = 0;
while(obj) {
if(!obj->has_id(state) || obj->id(state)->to_native() > check_id) {
count++;
bytes += obj->size_in_bytes(state->vm());
if(kind_of<String>(obj)) {
std::cout << "#<String:" << obj << ">\n";
} else {
std::cout << obj->to_s(state, true)->c_str(state) << "\n";
}
}
obj = walker.next();
}
std::cout << count << " objects since snapshot.\n";
std::cout << bytes << " bytes since snapshot.\n";
}
void VM::collect_maybe(CallFrame* call_frame) {
this->set_call_frame(call_frame);
// Don't go any further unless we're allowed to GC.
if(!om->can_gc()) return;
// Stops all other threads, so we're only here by ourselves.
StopTheWorld guard(this);
GCData gc_data(this);
uint64_t start_time = 0;
if(om->collect_young_now) {
if(shared.config.gc_show) {
start_time = get_current_time();
}
YoungCollectStats stats;
#ifdef RBX_PROFILER
if(unlikely(shared.profiling())) {
profiler::MethodEntry method(this, profiler::kYoungGC);
om->collect_young(gc_data, &stats);
} else {
om->collect_young(gc_data, &stats);
}
#else
om->collect_young(gc_data, &stats);
#endif
if(shared.config.gc_show) {
uint64_t fin_time = get_current_time();
int diff = (fin_time - start_time) / 1000000;
fprintf(stderr, "[GC %0.1f%% %d/%d %d %2dms]\n",
stats.percentage_used,
stats.promoted_objects,
stats.excess_objects,
stats.lifetime,
diff);
}
}
if(om->collect_mature_now) {
int before_kb = 0;
if(shared.config.gc_show) {
start_time = get_current_time();
before_kb = om->mature_bytes_allocated() / 1024;
}
#ifdef RBX_PROFILER
if(unlikely(shared.profiling())) {
profiler::MethodEntry method(this, profiler::kMatureGC);
om->collect_mature(gc_data);
} else {
om->collect_mature(gc_data);
}
#else
om->collect_mature(gc_data);
#endif
if(shared.config.gc_show) {
uint64_t fin_time = get_current_time();
int diff = (fin_time - start_time) / 1000000;
int kb = om->mature_bytes_allocated() / 1024;
fprintf(stderr, "[Full GC %dkB => %dkB %2dms]\n",
before_kb,
kb,
diff);
}
}
om->run_finalizers(this);
}
void ObjectMemory::collect_maybe(STATE, GCToken gct, CallFrame* call_frame) {
// Don't go any further unless we're allowed to GC.
if(!can_gc()) return;
while(!state->stop_the_world()) {
state->checkpoint(gct, call_frame);
// Someone else got to the GC before we did! No problem, all done!
if(!collect_young_now && !collect_mature_now) return;
}
// Ok, everyone in stopped! LET'S GC!
SYNC(state);
state->shared().finalizer_handler()->start_collection(state);
if(cDebugThreading) {
std::cerr << std::endl << "[" << state
<< " WORLD beginning GC.]" << std::endl;
}
if(collect_young_now) {
GCData gc_data(state->vm());
YoungCollectStats stats;
RUBINIUS_GC_BEGIN(0);
#ifdef RBX_PROFILER
if(unlikely(state->vm()->tooling())) {
tooling::GCEntry method(state, tooling::GCYoung);
collect_young(state, &gc_data, &stats);
} else {
collect_young(state, &gc_data, &stats);
}
#else
collect_young(state, &gc_data, &stats);
#endif
RUBINIUS_GC_END(0);
print_young_stats(state, &gc_data, &stats);
}
if(collect_mature_now) {
GCData* gc_data = new GCData(state->vm());
RUBINIUS_GC_BEGIN(1);
#ifdef RBX_PROFILER
if(unlikely(state->vm()->tooling())) {
tooling::GCEntry method(state, tooling::GCMature);
collect_mature(state, gc_data);
} else {
collect_mature(state, gc_data);
}
#else
collect_mature(state, gc_data);
#endif
if(!mature_mark_concurrent_) {
collect_mature_finish(state, gc_data);
print_mature_stats(state, gc_data);
}
}
state->restart_world();
UNSYNC;
}
void ObjectMemory::collect_maybe(STATE, GCToken gct, CallFrame* call_frame) {
// Don't go any further unless we're allowed to GC.
if(!can_gc()) return;
while(!state->stop_the_world()) {
state->checkpoint(gct, call_frame);
// Someone else got to the GC before we did! No problem, all done!
if(!collect_young_now && !collect_mature_now) return;
}
// Ok, everyone in stopped! LET'S GC!
SYNC(state);
state->shared().finalizer_handler()->start_collection(state);
if(cDebugThreading) {
std::cerr << std::endl << "[" << state
<< " WORLD beginning GC.]" << std::endl;
}
GCData gc_data(state->vm(), gct);
uint64_t start_time = 0;
if(collect_young_now) {
if(state->shared().config.gc_show) {
start_time = get_current_time();
}
YoungCollectStats stats;
#ifdef RBX_PROFILER
if(unlikely(state->vm()->tooling())) {
tooling::GCEntry method(state, tooling::GCYoung);
collect_young(gc_data, &stats);
} else {
collect_young(gc_data, &stats);
}
#else
collect_young(gc_data, &stats);
#endif
if(state->shared().config.gc_show) {
uint64_t fin_time = get_current_time();
int diff = (fin_time - start_time) / 1000000;
std::cerr << "[GC " << std::fixed << std::setprecision(1) << stats.percentage_used << "% "
<< stats.promoted_objects << "/" << stats.excess_objects << " "
<< stats.lifetime << " " << diff << "ms]" << std::endl;
if(state->shared().config.gc_noisy) {
std::cerr << "\a" << std::flush;
}
}
}
if(collect_mature_now) {
size_t before_kb = 0;
if(state->shared().config.gc_show) {
start_time = get_current_time();
before_kb = mature_bytes_allocated() / 1024;
}
#ifdef RBX_PROFILER
if(unlikely(state->vm()->tooling())) {
tooling::GCEntry method(state, tooling::GCMature);
collect_mature(gc_data);
} else {
collect_mature(gc_data);
}
#else
collect_mature(gc_data);
#endif
if(state->shared().config.gc_show) {
uint64_t fin_time = get_current_time();
int diff = (fin_time - start_time) / 1000000;
size_t kb = mature_bytes_allocated() / 1024;
std::cerr << "[Full GC " << before_kb << "kB => " << kb << "kB " << diff << "ms]" << std::endl;
if(state->shared().config.gc_noisy) {
std::cerr << "\a\a" << std::flush;
}
}
}
state->shared().finalizer_handler()->finish_collection(state);
state->restart_world();
UNSYNC;
}
Object* System::vm_find_object(STATE, GCToken gct,
Array* arg, Object* callable,
CallFrame* calling_environment)
{
ObjectMemory::GCInhibit inhibitor(state->memory());
// Support an aux mode, where callable is an array and we just append
// objects to it rather than #call it.
Array* ary = try_as<Array>(callable);
if(!ary) ary = nil<Array>();
Array* args = Array::create(state, 1);
int total = 0;
QueryCondition* condition = create_condition(state, arg);
if(!condition) return Fixnum::from(0);
Object* ret = cNil;
// Special case for looking for an immediate
if(Object* obj = condition->immediate()) {
if(Symbol* sym = try_as<Symbol>(obj)) {
// Check whether this is actually a valid symbol, not
// some random non existing symbol.
if(!state->shared().symbols.lookup_string(state, sym)) {
delete condition;
std::ostringstream msg;
msg << "Invalid symbol 0x" << std::hex << reinterpret_cast<uintptr_t>(sym);
Exception::range_error(state, msg.str().c_str());
return 0;
}
}
if(!ary->nil_p()) {
ary->append(state, obj);
} else {
args->set(state, 0, obj);
ret = callable->send(state, calling_environment, G(sym_call),
args, cNil, false);
}
delete condition;
if(!ret) return 0;
return Fixnum::from(1);
}
OnStack<2> os(state, ary, args);
state->set_call_frame(calling_environment);
ObjectWalker walker(state->memory());
GCData gc_data(state->vm());
{
StopTheWorld stw(state, gct, calling_environment);
// Seed it with the root objects.
walker.seed(gc_data);
}
Object* obj = walker.next();
while(obj) {
if(condition->perform(state, obj)) {
total++;
if(!ary->nil_p()) {
ary->append(state, obj);
} else {
// We call back into Ruby land here, so that might trigger a GC
// This ensures we mark all the locations of the current search
// queue for the walker, so we update these object references
// properly.
Object** stack_buf = walker.stack_buf();
size_t stack_size = walker.stack_size();
Object** variable_buffer[stack_size];
for(size_t i = 0; i < stack_size; ++i) {
variable_buffer[i] = &stack_buf[i];
}
VariableRootBuffer vrb(state->vm()->current_root_buffers(),
variable_buffer, stack_size);
args->set(state, 0, obj);
ret = callable->send(state, calling_environment, G(sym_call),
args, cNil, false);
if(!ret) break;
}
}
obj = walker.next();
}
delete condition;
if(!ret) return 0;
return Integer::from(state, total);
}