dnomd343
/
klotski
mirror of https://github.com/dnomd343/klotski.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

perf: BasicRanges static build process

legacy
Dnomd343 3 years ago
parent
878a0a5efc
commit
a781001835
2 changed files with 44 additions and 81 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 114
      all_cases/basic_ranges.cc
  2. 11
      all_cases/main.cc

114
all_cases/basic_ranges.cc
View File

@ -15,11 +15,44 @@ inline uint32_t binary_count(uint32_t bin) { // get number of non-zero bits
return bin & 0b111111; return bin & 0b111111;
} }
void BasicRanges::generate_ranges(int n1, int n2, int n3, int n4) { const std::vector<uint32_t>* BasicRanges::get_basic_ranges() { // get const ptr of basic ranges
if (basic_ranges.empty()) {
build_basic_ranges(); // basic ranges initialize
}
return &basic_ranges; // return ptr
}
void BasicRanges::build_basic_ranges() { // build basic ranges
if (basic_ranges_available) {
return; // basic ranges already built
}
if (basic_ranges_building.try_lock()) { // lock success -> start building
/// 0x0 -> 00 | 1x2 -> 01 | 2x1 -> 10 | 1x1 -> 11
for (int n = 0; n <= 7; ++n) { // number of 1x2 and 2x1 block -> 0 ~ 7
for (int n_2x1 = 0; n_2x1 <= n; ++n_2x1) { // number of 2x1 block -> 0 ~ n
for (int n_1x1 = 0; n_1x1 <= (14 - n * 2); ++n_1x1) { // number of 1x1 block -> 0 ~ (14 - 2n)
int n_1x2 = n - n_2x1;
int n_space = 16 - n * 2 - n_1x1;
generate_ranges(n_space, n_1x2, n_2x1, n_1x1); // generate target ranges
}
}
}
std::sort(basic_ranges.begin(), basic_ranges.end()); // sort basic ranges
for (uint32_t &range : basic_ranges) {
range = Common::range_reverse(range); // basic ranges reverse
}
basic_ranges_available = true; // set available flag
} else { // another thread building
basic_ranges_building.lock(); // blocking waiting
}
basic_ranges_building.unlock();
}
void BasicRanges::generate_ranges(int n1, int n2, int n3, int n4) { // generate specific basic ranges
int len, limit; int len, limit;
constexpr uint32_t M_01 = 0b01 << 30; constexpr uint32_t MASK_01 = 0b01 << 30;
constexpr uint32_t M_10 = 0b10 << 30; constexpr uint32_t MASK_10 = 0b10 << 30;
constexpr uint32_t M_11 = 0b11 << 30; constexpr uint32_t MASK_11 = 0b11 << 30;
std::vector<uint32_t> cache_1, cache_2; std::vector<uint32_t> cache_1, cache_2;
len = n1 + n2; len = n1 + n2;
@ -32,7 +65,7 @@ void BasicRanges::generate_ranges(int n1, int n2, int n3, int n4) {
for (int i = 0; i < len; ++i) { // generate range base on binary value for (int i = 0; i < len; ++i) { // generate range base on binary value
range >>= 2; range >>= 2;
if ((bin >> i) & 0b1) { // non-zero bit if ((bin >> i) & 0b1) { // non-zero bit
range |= M_01; // 01000... range |= MASK_01;
} }
} }
cache_1.emplace_back(range); // insert into first layer cache_1.emplace_back(range); // insert into first layer
@ -48,10 +81,10 @@ void BasicRanges::generate_ranges(int n1, int n2, int n3, int n4) {
uint32_t range = 0; uint32_t range = 0;
for (int i = 0; i < len; ++i) { // generate range base on binary value for (int i = 0; i < len; ++i) { // generate range base on binary value
if ((bin >> i) & 0b1) { // non-zero bit if ((bin >> i) & 0b1) { // non-zero bit
(range >>= 2) |= M_10; // 10000... (range >>= 2) |= MASK_10;
continue; continue;
} }
(range >>= 2) |= base & M_11; (range >>= 2) |= base & MASK_11;
base <<= 2; base <<= 2;
} }
cache_2.emplace_back(range); // insert into second layer cache_2.emplace_back(range); // insert into second layer
@ -68,74 +101,13 @@ void BasicRanges::generate_ranges(int n1, int n2, int n3, int n4) {
uint32_t range = 0; uint32_t range = 0;
for (int i = 0; i < len; ++i) { // generate range base on binary value for (int i = 0; i < len; ++i) { // generate range base on binary value
if ((bin >> i) & 0b1) { // non-zero bit if ((bin >> i) & 0b1) { // non-zero bit
(range >>= 2) |= M_11; // 11000... (range >>= 2) |= MASK_11;
continue; continue;
} }
(range >>= 2) |= base & M_11; (range >>= 2) |= base & MASK_11;
base <<= 2; base <<= 2;
} }
basic_ranges.emplace_back(range); // insert into release ranges basic_ranges.emplace_back(range); // insert into release
}
}
}
#include <thread>
#include <iostream>
void BasicRanges::build_basic_ranges() {
std::cout << std::this_thread::get_id() << " enter build function" << std::endl;
if (basic_ranges_available) {
std::cout << std::this_thread::get_id() << " data already built -> skip" << std::endl;
return; // basic ranges already built
}
if (basic_ranges_building.try_lock()) { // lock success -> not building
std::cout << std::this_thread::get_id() << " try lock success -> start build process" << std::endl;
// AllCases::basic_ranges.emplace_back(0);
// AllCases::basic_ranges.emplace_back(1);
// AllCases::basic_ranges.emplace_back(2);
// sleep(2); // assume using a lot of time
for (int n = 0; n <= 7; ++n) { // number of 1x2 and 2x1 block -> 0 ~ 7
for (int n_2x1 = 0; n_2x1 <= n; ++n_2x1) { // number of 2x1 block -> 0 ~ n
for (int n_1x1 = 0; n_1x1 <= (14 - n * 2); ++n_1x1) { // number of 1x1 block -> 0 ~ (14 - 2n)
int n_1x2 = n - n_2x1;
int n_space = 16 - n * 2 - n_1x1;
/// 0x0 -> 00 | 1x2 -> 01 | 2x1 -> 10 | 1x1 -> 11
generate_ranges(n_space, n_1x2, n_2x1, n_1x1); // generate target ranges
}
}
} }
std::sort(basic_ranges.begin(), basic_ranges.end()); // sort basic ranges
for (uint32_t &range : basic_ranges) {
range = Common::range_reverse(range); // range reverse
}
basic_ranges_available = true; // enable available flag
std::cout << std::this_thread::get_id() << " build complete -> continue" << std::endl;
} else { // another thread building
std::cout << std::this_thread::get_id() << " another thread building -> wait" << std::endl;
basic_ranges_building.lock(); // blocking wait
}
std::cout << std::this_thread::get_id() << " work complete -> unlock" << std::endl;
basic_ranges_building.unlock();
}
const std::vector<uint32_t>* BasicRanges::get_basic_ranges() {
if (basic_ranges.empty()) {
build_basic_ranges(); // basic ranges initialize
} }
return &basic_ranges;
} }

11
all_cases/main.cc
View File

@ -3,25 +3,16 @@
#include "basic_ranges.h" #include "basic_ranges.h"
#include <thread> #include <thread>
#include <unistd.h>
int main() { int main() {
std::cout << BasicRanges::get_basic_ranges()->size() << std::endl;
std::thread t1(BasicRanges::build_basic_ranges); std::thread t1(BasicRanges::build_basic_ranges);
// usleep(10);
std::thread t2(BasicRanges::build_basic_ranges); std::thread t2(BasicRanges::build_basic_ranges);
// usleep(10);
std::thread t3(BasicRanges::build_basic_ranges); std::thread t3(BasicRanges::build_basic_ranges);
// usleep(10);
t1.join(); t1.join();
t2.join(); t2.join();
t3.join(); t3.join();
BasicRanges::build_basic_ranges(); // BasicRanges::build_basic_ranges();
std::cout << BasicRanges::get_basic_ranges()->size() << std::endl; std::cout << BasicRanges::get_basic_ranges()->size() << std::endl;
return 0; return 0;

Write Preview
Loading…
Cancel
Save