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object.cpp
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object.cpp
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/*
Copyright (c) 2018 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#include <utility>
#include <random>
#include <iostream>
#include <vector>
#include "util/test.h" // <<< comment this list for performance experiments
#include "util/timeit.h"
#include "runtime/stackinfo.h"
#include "runtime/thread.h"
#include "runtime/serializer.h"
#include "runtime/sstream.h"
#include "util/object_ref.h"
#include "util/array_ref.h"
#include "util/init_module.h"
#include "util/nat.h"
using namespace lean;
#define USED(x) (void)(x)
object * f(object *) {
std::cout << "executing f...\n";
return box(10);
}
void tst1() {
object_ref t(mk_thunk(alloc_closure(f, 0)));
object * r1 = thunk_get(t.raw());
object * r2 = thunk_get(t.raw());
std::cout << "thunk value: " << unbox(r1) << "\n";
std::cout << "thunk value: " << unbox(r2) << "\n";
}
static unsigned g_g_counter = 0;
object * g(object *) {
g_g_counter++;
return box(g_g_counter);
}
void tst2() {
object * c = alloc_closure(g, 0);
inc(c);
object * r1 = apply_1(c, box(0));
inc(c);
object * r2 = apply_1(c, box(0));
lean_assert(unbox(r1) == 1);
lean_assert(unbox(r2) == 2);
object_ref t(mk_thunk(c));
object * r3 = thunk_get(t.raw());
object * r4 = thunk_get(t.raw());
lean_assert(unbox(r3) == 3);
lean_assert(unbox(r4) == 3);
USED(r1); USED(r2); USED(r3); USED(r4);
}
static unsigned g_h_counter = 0;
object * h(object *) {
g_h_counter++;
return box(0);
}
/* Make sure box(0) is not mistaken by cached value has not been initialized yet.
The thunk implementation relies on the fact that nullptr is not a scalar nor a valid
Lean object. */
void tst3() {
object_ref t(mk_thunk(alloc_closure(h, 0)));
lean_assert(g_h_counter == 0);
object * r3 = thunk_get(t.raw());
lean_assert(g_h_counter == 1);
object * r4 = thunk_get(t.raw());
lean_assert(g_h_counter == 1);
lean_assert(unbox(r3) == 0);
lean_assert(unbox(r4) == 0);
USED(r3); USED(r4);
}
object * r(object *) {
return mk_string("hello world");
}
void tst4() {
object_ref t(mk_thunk(alloc_closure(r, 0)));
object * r3 = thunk_get(t.raw());
object * r4 = thunk_get(t.raw());
lean_assert(string_eq(r3, "hello world"));
lean_assert(string_eq(r4, "hello world"));
USED(r3); USED(r4);
}
void tst5() {
object_ref t(mk_thunk(alloc_closure(r, 0)));
std::ostringstream out;
serializer s(out);
object_ref o(mk_string("bla bla"));
s.write_object(o.raw());
s.write_object(t.raw());
s.write_object(t.raw());
std::istringstream in(out.str());
deserializer d(in);
d.read_object();
object * r1 = d.read_object();
object * r2 = d.read_object();
lean_assert(r1 == r2);
lean_assert(is_thunk(r1));
object * str = thunk_get(r1);
lean_assert(strcmp(string_cstr(str), "hello world") == 0);
USED(r2); USED(str);
}
unsigned g_counter = 0;
mutex g_io_mutex;
void show_msg(char const * msg) {
unique_lock<mutex> lock(g_io_mutex);
std::cout << msg;
}
object * task1_fn(object *) {
g_counter++;
show_msg("task 1 - started\n");
this_thread::sleep_for(std::chrono::milliseconds(100));
show_msg("task 1 - executed\n");
return box(10);
}
object * add_10(object * a) {
show_msg("task 2 - started\n");
this_thread::sleep_for(std::chrono::milliseconds(200));
show_msg("task 2 - executed\n");
return box(unbox(a) + 10);
}
obj_res task3_fn(obj_arg val, obj_arg) {
show_msg("task 3 - started\n");
this_thread::sleep_for(std::chrono::milliseconds(100));
show_msg("task 3 - executed\n");
return box(unbox(val)+100);
}
obj_res mk_task3_fn(obj_arg val) {
object * c = alloc_closure(task3_fn, 1);
closure_set(c, 0, val);
return mk_task(c);
}
obj_res mk_task2(b_obj_arg task1) {
inc(task1);
return task_map(alloc_closure(add_10, 0), task1);
}
obj_res mk_task3(b_obj_arg task1) {
inc_ref(task1);
return task_bind(task1, alloc_closure(mk_task3_fn, 0));
}
void tst6_core(object * task1) {
object_ref task2(mk_task2(task1));
object_ref task3(mk_task3(task1));
std::cout << "tst6 started...\n";
object * r1 = task_get(task2.raw());
object * r2 = task_get(task3.raw());
std::cout << "r1: " << unbox(r1) << "\n";
std::cout << "r2: " << unbox(r2) << "\n";
lean_assert(unbox(r1) == 20);
lean_assert(unbox(r2) == 110);
}
void tst6() {
{
scoped_task_manager m(8);
object_ref task1(mk_task(alloc_closure(task1_fn, 0)));
tst6_core(task1.raw());
}
{
scoped_task_manager m(8);
object_ref task1(task_pure(box(10)));
tst6_core(task1.raw());
}
{
scoped_task_manager m(8);
object_ref task1(thunk_pure(box(10)));
lean_assert(unbox(task_get(task1.raw())) == 10);
lean_assert(io_has_finished_core(task1.raw()));
tst6_core(task1.raw());
}
{
scoped_task_manager m(8);
object_ref task1(mk_thunk(alloc_closure(f, 0)));
lean_assert(io_has_finished_core(task1.raw()));
tst6_core(task1.raw());
}
}
obj_res task4_fn(obj_arg) {
show_msg("task 4 started...\n");
while (!io_check_interrupt_core()) {
show_msg("task 4 loop...\n");
this_thread::sleep_for(std::chrono::milliseconds(10));
}
show_msg("task 4 was interrupted...\n");
return box(1);
}
void tst7() {
scoped_task_manager m(8);
std::cout << ">> tst7 started...\n";
object_ref task4(mk_task(alloc_closure(task4_fn, 0)));
std::cout << "task4 has finished: " << io_has_finished_core(task4.raw()) << "\n";
this_thread::sleep_for(std::chrono::milliseconds(100));
show_msg("request interrupt...\n");
io_request_interrupt_core(task4.raw());
object * r = task_get(task4.raw());
std::cout << "task4 has finished after get: " << io_has_finished_core(task4.raw()) << "\n";
std::cout << "r: " << unbox(r) << "\n";
}
obj_res task5_fn(obj_arg id, obj_arg) {
show_msg((sstream() << "task 5[" << unbox(id) << "] started \n").str().c_str());
this_thread::sleep_for(std::chrono::milliseconds(10));
show_msg((sstream() << "task 5[" << unbox(id) << "] finished \n").str().c_str());
return id;
}
obj_res mk_task5(obj_arg id) {
object * c = alloc_closure(task5_fn, 1);
closure_set(c, 0, id);
return mk_task(c);
}
void tst8() {
scoped_task_manager m(8);
std::cout << ">> tst8 started...\n";
std::vector<object_ref> tasks;
for (unsigned i = 0; i < 100; i++) {
tasks.push_back(object_ref(mk_task5(box(i))));
}
unsigned i = 0;
for (object_ref const & t : tasks) {
object * r = task_get(t.raw());
lean_assert(unbox(r) == i);
i++;
}
}
obj_res loop_until_interrupt_fn(obj_arg) {
while (!io_check_interrupt_core()) {
this_thread::sleep_for(std::chrono::milliseconds(1));
}
return box(0);
}
obj_res task6_fn(obj_arg) {
show_msg("task 6 started...\n");
this_thread::sleep_for(std::chrono::milliseconds(100));
show_msg("task 6 done...\n");
return box(42);
}
obj_res mk_cons(b_obj_arg h, obj_arg t) {
object * r = alloc_cnstr(1, 2, 0);
inc(h);
cnstr_set(r, 0, h);
cnstr_set(r, 1, t);
return r;
}
void tst9() {
scoped_task_manager m(8);
std::cout << ">> tst9 started...\n";
object_ref t1(mk_task(alloc_closure(loop_until_interrupt_fn, 0)));
object_ref t2(mk_task(alloc_closure(loop_until_interrupt_fn, 0)));
object_ref t3(mk_task(alloc_closure(task6_fn, 0)));
object_ref ts(mk_cons(t1.raw(), mk_cons(t2.raw(), mk_cons(t3.raw(), box(0)))));
show_msg("invoke wait_any...\n");
object * t = io_wait_any_core(ts.raw());
show_msg("wait_any returned...\n");
object * v = task_get(t);
lean_assert(unbox(v) == 42);
io_request_interrupt_core(t1.raw());
io_request_interrupt_core(t2.raw());
task_get(t1.raw());
task_get(t2.raw());
}
void tst10() {
scoped_task_manager m(8);
std::cout << ">> tst10 started...\n";
object_ref t1(mk_task(alloc_closure(task6_fn, 0)));
{
object_ref t2(mk_task2(t1.raw()));
}
task_get(t1.raw());
}
void tst11() {
std::cout << ">> tst11 started...\n";
{
scoped_task_manager m(2);
std::vector<object_ref> tasks;
for (unsigned i = 0; i < 100; i++) {
tasks.push_back(object_ref(mk_task(alloc_closure(loop_until_interrupt_fn, 0))));
}
this_thread::sleep_for(std::chrono::milliseconds(100));
}
std::cout << "tst11 done...\n";
}
static atomic<bool> g_finished;
obj_res loop_until_interrupt_fn2(obj_arg) {
while (!io_check_interrupt_core()) {
this_thread::sleep_for(std::chrono::milliseconds(1));
}
g_finished = true;
return box(0);
}
void tst12() {
std::cout << ">> tst12 started...\n";
g_finished = false;
scoped_task_manager m(8);
{
object_ref t(mk_task(alloc_closure(loop_until_interrupt_fn2, 0)));
this_thread::sleep_for(std::chrono::milliseconds(10));
/* task t must be interrupted automatically */
}
while (g_finished) {
this_thread::sleep_for(std::chrono::milliseconds(1));
}
std::cout << "tst12 done...\n";
}
static atomic<unsigned> g_task7_counter(1);
obj_res task7_fn(obj_arg val, obj_arg) {
if (g_task7_counter % 10 == 0)
show_msg((sstream() << "task 7[" << g_task7_counter << "]\n").str().c_str());
g_task7_counter++;
this_thread::sleep_for(std::chrono::milliseconds(1));
return box(unbox(val)+1);
}
obj_res mk_task7_fn(obj_arg val) {
object * c = alloc_closure(task7_fn, 1);
closure_set(c, 0, val);
return mk_task(c);
}
obj_res mk_task7(obj_arg t) {
return task_bind(t, alloc_closure(mk_task7_fn, 0));
}
object * mul2(object * a) {
return box(unbox(a) * 2);
}
void tst13() {
scoped_task_manager m(8);
std::cout << "tst13 started ...\n";
object * curr = mk_task(alloc_closure(task1_fn, 0));
std::vector<object *> children;
for (unsigned i = 0; i < 1000; i++) {
curr = mk_task7(curr);
inc(curr);
children.push_back(task_map(alloc_closure(mul2, 0), curr));
}
inc(curr);
object * it = curr;
for (unsigned i = 0; i < 10000; i++) {
it = mk_task7(it);
}
dec(it); // it will force the 10000 tasks created above to die...
object * v = task_get(curr);
dec(curr);
show_msg((sstream() << "v: " << unbox(v) << "\n").str().c_str());
object * vc = task_get(children.back());
for (object * c : children)
dec(c);
lean_assert(unbox(v) == 1010);
lean_assert(unbox(vc) == 2020);
std::cout << g_task7_counter << "\n";
}
obj_res mk_foo(unsigned n) {
object * r = alloc_cnstr(0, 1, 0);
cnstr_set(r, 0, box(n));
return r;
}
unsigned foo_val(b_obj_arg v) {
return unbox(cnstr_get(v, 0));
}
object * mk_list(unsigned n) {
object * r = box(0);
for (unsigned i = 0; i < n; i++) {
object * new_r = alloc_cnstr(1, 2, 0);
cnstr_set(new_r, 0, box(i));
cnstr_set(new_r, 1, r);
r = new_r;
}
return r;
}
bool contains_borrow(object * l, object * v) {
if (is_scalar(l)) {
return false;
} else {
object * h = cnstr_get(l, 0);
object * t = cnstr_get(l, 1);
if (h == v) {
return true;
} else {
return contains_borrow(t, v);
}
}
}
bool contains(object * l, object * v) {
if (is_scalar(l)) {
dec(v);
return false;
} else {
object * h = cnstr_get(l, 0);
object * t = cnstr_get(l, 1);
if (!is_shared(l)) {
lean_free_object(l);
} else {
inc(h);
inc(t);
dec_ref(l);
}
if (h == v) {
dec(h); dec(v); dec(t);
return true;
} else {
dec(h);
return contains(t, v);
}
}
}
inline object * mark_borrowed(object * o) {
if (is_scalar(o))
return o;
else
return reinterpret_cast<object*>(reinterpret_cast<uintptr_t>(o) | 0x2);
}
inline bool is_borrowed(object * o) {
return !is_scalar(o) && (reinterpret_cast<uintptr_t>(o) & 0x2) != 0;
}
inline object * get_object(object * o) {
if (is_scalar(o))
return o;
else
return reinterpret_cast<object*>((reinterpret_cast<uintptr_t>(o) >> 2) << 2);
}
bool contains_hybrid(object * l, object * v) {
bool l_b = is_borrowed(l);
object * l_obj = get_object(l);
bool v_b = is_borrowed(v);
object * v_obj = get_object(v);
if (is_scalar(l_obj)) {
if (!v_b) dec(v_obj);
return false;
} else {
object * h_obj = cnstr_get(l_obj, 0);
object * t_obj = cnstr_get(l_obj, 1);
object * t;
if (l_b) {
t = mark_borrowed(t_obj);
} else if (!is_shared(l_obj)) {
lean_free_object(l_obj);
t = t_obj;
} else {
inc(h_obj);
inc(t_obj);
dec_ref(l_obj);
t = mark_borrowed(t_obj);
}
if (v_obj == h_obj) {
if (!l_b) dec(h_obj);
if (!l_b) dec(t_obj);
if (!v_b) dec(v_obj);
return false;
} else {
if (!l_b) dec(h_obj);
return contains_hybrid(t, v);
}
}
}
bool contains_fast_hybrid(object * l, object * v) {
if (is_scalar(l)) {
dec(v);
return false;
} else {
object * h = cnstr_get(l, 0);
object * t = cnstr_get(l, 1);
bool shared = is_shared(l);
if (!shared) {
lean_free_object(l);
} else {
inc(h);
inc(t);
dec_ref(l);
}
if (h == v) {
dec(h); dec(v); dec(t);
return true;
} else if (!shared) {
dec(h);
return contains_fast_hybrid(t, v);
} else {
dec(h);
bool r = contains_borrow(t, v);
dec(t);
dec(v);
return r;
}
}
}
void tst17(unsigned n, unsigned sz) {
{
timeit timer(std::cout, "contains standard");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
inc(l);
contains(l, box(sz));
inc(l);
contains(l, box(sz/2));
}
dec(l);
}
{
timeit timer(std::cout, "contains borrowed");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
contains_borrow(l, box(sz));
contains_borrow(l, box(sz/2));
}
dec(l);
}
{
timeit timer(std::cout, "contains hybrid");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
inc(l);
contains_hybrid(l, box(sz));
inc(l);
contains_hybrid(l, box(sz/2));
}
dec(l);
}
{
timeit timer(std::cout, "contains fast hybrid");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
inc(l);
contains_fast_hybrid(l, box(sz));
inc(l);
contains_fast_hybrid(l, box(sz/2));
}
dec(l);
}
}
inline object * get(object * o, unsigned idx) {
object * r = cnstr_get(o, idx);
inc(r);
return r;
}
object * map_add1(object * l) {
if (is_scalar(l)) {
return l;
} else {
object * h = cnstr_get(l, 0); inc(h);
object * t = cnstr_get(l, 1); inc(t);
dec(l);
object * new_h = box(unbox(h)+1);
object * new_t = map_add1(t);
object * r = alloc_cnstr(1, 2, 0);
cnstr_set(r, 0, new_h);
cnstr_set(r, 1, new_t);
return r;
}
}
object * map_add1_reuse(object * l) {
if (is_scalar(l)) {
return l;
} else {
object * h = cnstr_get(l, 0); inc(h);
object * t = cnstr_get(l, 1); inc(t);
object * r;
if (is_shared(l)) {
dec(l);
r = alloc_cnstr(1, 2, 0);
} else {
r = l;
dec(h);
dec(t);
}
cnstr_set(r, 0, box(0));
cnstr_set(r, 1, box(0));
object * new_h = box(unbox(h)+1);
object * new_t = map_add1_reuse(t);
cnstr_set(r, 0, new_h);
cnstr_set(r, 1, new_t);
return r;
}
}
object * map_add1_reuse_opt(object * l) {
if (is_scalar(l)) {
return l;
} else {
object * h = cnstr_get(l, 0);
object * t = cnstr_get(l, 1);
object * r;
if (is_shared(l)) {
inc(h);
inc(t);
dec(l);
r = alloc_cnstr(1, 2, 0);
} else {
r = l;
}
object * new_h = box(unbox(h)+1);
object * new_t = map_add1_reuse_opt(t);
cnstr_set(r, 0, new_h);
cnstr_set(r, 1, new_t);
return r;
}
}
void tst18(unsigned n, unsigned sz) {
{
timeit timer(std::cout, "map");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
lean_assert(!is_shared(l));
l = map_add1(l);
}
dec(l);
}
{
timeit timer(std::cout, "map_reuse");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
lean_assert(!is_shared(l));
l = map_add1_reuse(l);
}
dec(l);
}
{
timeit timer(std::cout, "map_opt");
object * l = mk_list(sz);
for (unsigned i = 0; i < n; i++) {
lean_assert(!is_shared(l));
l = map_add1_reuse_opt(l);
}
dec(l);
}
}
void tst19() {
object * s1 = mk_string("hello");
object * s2 = mk_string("world");
inc_ref(s1);
object * s4 = string_append(s1, s2);
lean_assert(string_eq(s4, "helloworld"));
lean_assert(string_eq(s1, "hello"));
dec_ref(s4);
object * s5 = string_append(s1, s2);
lean_assert(string_eq(s5, "helloworld"));
object * b = mk_string("!");
object * s6 = string_append(s5, b);
lean_assert(string_eq(s6, "helloworld!"));
lean_assert(s5 == s6);
inc_ref(s6);
object * s7 = string_push(s6, '!');
lean_assert(string_eq(s6, "helloworld!"));
lean_assert(string_eq(s7, "helloworld!!"));
object * s8 = string_push(s7, 'a');
lean_assert(string_eq(s8, "helloworld!!a"));
lean_assert(s7 == s8);
dec_ref(s2); dec_ref(s6); dec_ref(b); dec_ref(s8);
}
void tst20() {
lean_assert(nat(LEAN_MAX_SMALL_NAT+1) == nat(LEAN_MAX_SMALL_NAT) + nat(1));
lean_assert(!nat(LEAN_MAX_SMALL_NAT+1).is_small());
lean_assert(nat(LEAN_MAX_SMALL_NAT).is_small());
lean_assert(nat(2) + nat(3) == nat(5));
lean_assert(!(nat(LEAN_MAX_SMALL_NAT) * nat(LEAN_MAX_SMALL_NAT)).is_small());
nat tmp = (nat(LEAN_MAX_SMALL_NAT) * nat(LEAN_MAX_SMALL_NAT))/nat(LEAN_MAX_SMALL_NAT);
lean_assert(tmp.is_small());
lean_assert(tmp == LEAN_MAX_SMALL_NAT);
lean_assert(nat(LEAN_MAX_SMALL_NAT) * nat(LEAN_MAX_SMALL_NAT) > nat(LEAN_MAX_SMALL_NAT));
}
void tst21() {
array_ref<nat> a({nat(1), nat(2), nat(3)});
lean_assert(a.size() == 3);
lean_assert(a[0] == nat(1));
for (nat const & v : a) {
std::cout << v << "\n";
}
}
int main() {
save_stack_info();
initialize_util_module();
tst1();
tst2();
tst3();
tst4();
tst5();
tst6();
tst7();
tst8();
tst9();
tst10();
tst11();
tst12();
tst13();
// tst17(40000, 3000);
tst17(400, 30);
// tst18(4000, 3000);
tst18(400, 30);
tst19();
tst20();
tst21();
finalize_util_module();
return has_violations() ? 1 : 0;
}