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solver_python/Makefile

+TARGET = sim
+OBJS = $(CPPS:.cpp=.o)
+CPPS = main.cpp io.cpp solver.cpp tools.cpp
+CXX = g++
+CXXFLAGS = -std=c++11 -O3
+
+all: $(TARGET)
+
+$(TARGET): $(OBJS)
+	$(CXX) -o $@ $(OBJS)
+
+clean:
+	rm *.o
+	rm $(TARGET)

solver_python/io.cpp

+#include "io.hpp"
+
+void read_problem(const char *f_name, short int *W, short int *H, short int *blocks, short int *line_num, short int block_info[][5][3], short int line_info[][2][5]) {
+
+	ifstream inputfile(f_name);
+	if(!inputfile) {
+		cout << f_name << ": Cannot open" << endl;
+		exit(1);
+	}
+	
+	for(int i = 0; i < MAX_BLOCKS+1; i++) {
+		for(int j = 0; j < 5; j++) {
+			for(int k = 0; k < 3; k++) {
+				block_info[i][j][k] = -1;
+			}
+		}
+	}
+	for(int i = 0; i < MAX_LINES+1; i++) {
+		for(int j = 0; j < 2; j++) {
+			for(int k = 0; k < 5; k++) {
+				line_info[i][j][k] = -1;
+			}
+		}
+	}
+	*line_num = 0;
+	
+	int now_block = 0, count;
+	short int size_x = -1, size_y = -1, now_x, now_y, num;
+	while(1) {
+		string line, tmp;
+		string::size_type pos;
+		
+		if(!getline(inputfile, line)) break;
+		if(line.find("\n") != string::npos || line.find("\r") != string::npos) {
+			line.replace(line.length()-1, 1, ""); // Remove '\n' or '\r'
+		}
+		
+		int len = line.length();
+		if(len == 0) continue;
+		
+		if(line.find("SIZE") != string::npos) {
+			replace(line.begin(), line.end(), 'X', ' ');
+			istringstream iss(line);
+			iss >> tmp >> *W >> *H;
+			continue;
+		}
+		else if(line.find("BLOCK_NUM") != string::npos) {
+			istringstream iss(line);
+			iss >> tmp >> *blocks;
+			continue;
+		}
+		else if(line.find("BLOCK") != string::npos) {
+			now_block++;
+			replace(line.begin(), line.end(), 'X', ' ');
+			istringstream iss(line);
+			iss >> tmp >> size_x >> size_y;
+			now_y = 0;
+			count = 1;
+			block_info[now_block][0][0] = size_x;
+			block_info[now_block][0][1] = size_y;
+			continue;
+		}
+		
+		// Replace ' ' -> ""
+		pos = 0;
+		while((pos = line.find(' ', pos)) != string::npos) {
+			line.replace(pos, 1, "");
+		}
+		// Replace '+' -> "-1"
+		pos = 0;
+		while((pos = line.find('+', pos)) != string::npos) {
+			line.replace(pos, 1, "-1");
+		}
+		// Replace ',' -> " "
+		pos = 0;
+		while((pos = line.find(',', pos)) != string::npos) {
+			line.replace(pos, 1, " ");
+		}
+		
+		istringstream iss(line);
+		for(now_x = 0; now_x < size_x; now_x++) {
+			iss >> num;
+			if(num > 0) {
+				block_info[now_block][count][0] = now_x;
+				block_info[now_block][count][1] = now_y;
+				block_info[now_block][count][2] = num;
+				if(line_info[num][0][0] == -1) { line_info[num][0][0] = now_block; }
+				else if(line_info[num][1][0] == -1) { line_info[num][1][0] = now_block; }
+				else { cout << "Error(RE0): Line#" << num << endl; exit(1); }
+				if(num > *line_num) { *line_num = num; }
+				count++;
+			}
+			else if(num < 0) {
+				block_info[now_block][count][0] = now_x;
+				block_info[now_block][count][1] = now_y;
+				block_info[now_block][count][2] = 0;
+				count++;
+			}
+		}
+		now_y++;
+	}
+	cout << "W: " << *W << ", H: " << *H << endl;
+	
+	/// Print block information ///
+	cout << "== Block information ==" << endl;
+	cout << "#Blocks = " << *blocks << endl;
+	for(int i = 1; i <= *blocks; i++) {
+		short int sx = block_info[i][0][0];
+		short int sy = block_info[i][0][1];
+		cout << "Block#" << i << ": (" << sx << ", " << sy << ")" << endl;
+		
+		if(sx == 1 && sy == 1) { // monomino
+			short int tx = block_info[i][1][0];
+			short int ty = block_info[i][1][1];
+			short int tn = block_info[i][1][2];
+			cout << "- (" << tx << ", " << ty << ") " << tn << endl;
+		}
+		else {
+			for(int it = 1; it < 5; it++) {
+				short int tx = block_info[i][it][0];
+				short int ty = block_info[i][it][1];
+				short int tn = block_info[i][it][2];
+				cout << "- (" << tx << ", " << ty << ") " << tn << endl;
+			}
+		}
+	}
+	/// Print block information ///
+}
+
+void extract_line_info(short int line_num, short int blocks, short int block_info[][5][3], short int line_info[][2][5]) {
+	
+	short int lines_x[4], lines_y[4]; // # of nums in a block for X- & Y- axes
+	for(int i = 1; i <= blocks; i++) {
+		short int sx = block_info[i][0][0];
+		short int sy = block_info[i][0][1];
+		
+		if(sx == 1 && sy == 1) { // monomino
+			//short int tx = block_info[i][1][0];
+			//short int ty = block_info[i][1][1];
+			short int tn = block_info[i][1][2];
+			
+			if(tn == 0) continue;
+			
+			short int n_idx = 0;
+			while(line_info[tn][n_idx][1] != -1) {
+				n_idx++;
+				if(n_idx >= 2) { cout << "Error(EL0): Line#" << tn << endl; exit(1); }
+			}
+			line_info[tn][n_idx][LE] = 2;
+			line_info[tn][n_idx][TO] = 2;
+			line_info[tn][n_idx][RI] = 2;
+			line_info[tn][n_idx][BO] = 2;
+			
+			continue;
+		}
+		
+		for(short int p = 0; p < 4; p++) lines_x[p] = 0;
+		for(short int q = 0; q < 4; q++) lines_y[q] = 0;
+		
+		for(int it = 1; it < 5; it++) {
+			short int tx = block_info[i][it][0];
+			short int ty = block_info[i][it][1];
+			short int tn = block_info[i][it][2];
+			if(tn > 0) {
+				lines_x[tx] += 1;
+				lines_y[ty] += 1;
+			}
+		}
+		
+		for(int it = 1; it < 5; it++) {
+			short int tx = block_info[i][it][0];
+			short int ty = block_info[i][it][1];
+			short int tn = block_info[i][it][2];
+			
+			if(tn == 0) continue;
+			
+			short int n_idx = 0;
+			while(line_info[tn][n_idx][1] != -1) {
+				n_idx++;
+				if(n_idx >= 2) { cout << "Error(EL1): Line#" << tn << endl; exit(1); }
+			}
+			
+			short int compe_cost, wall_cost;
+			// Map to left
+			compe_cost = 2;
+			compe_cost += lines_x[tx] - 1;
+			for(short int p = tx - 1; p >= 0; p--) { compe_cost += lines_x[p] * 2; }
+			wall_cost = 1;
+			for(int it2 = 1; it2 < 5; it2++) {
+				short int cx = block_info[i][it2][0];
+				short int cy = block_info[i][it2][1];
+				if(cx == tx && cy == ty) continue;
+				if(cy == ty && cx < tx) {
+					if(sx == 2 && sy == 3 && ty == 1) {
+						wall_cost = 4;
+					}
+					else {
+						wall_cost = 2;
+					}
+				}
+			}
+			line_info[tn][n_idx][LE] = compe_cost * wall_cost;
+			
+			// Map to top
+			compe_cost = 2;
+			compe_cost += lines_y[ty] - 1;
+			for(short int q = ty - 1; q >= 0; q--) { compe_cost += lines_y[q] * 2; }
+			wall_cost = 1;
+			for(int it2 = 1; it2 < 5; it2++) {
+				short int cx = block_info[i][it2][0];
+				short int cy = block_info[i][it2][1];
+				if(cx == tx && cy == ty) continue;
+				if(cx == tx && cy < ty) {
+					if(sx == 3 && sy == 2 && tx == 1) {
+						wall_cost = 4;
+					}
+					else {
+						wall_cost = 2;
+					}
+				}
+			}
+			line_info[tn][n_idx][TO] = compe_cost * wall_cost;
+			
+			// Map to right
+			compe_cost = 2;
+			compe_cost += lines_x[tx] - 1;
+			for(short int p = tx + 1; p < sx; p++) { compe_cost += lines_x[p] * 2; }
+			wall_cost = 1;
+			for(int it2 = 1; it2 < 5; it2++) {
+				short int cx = block_info[i][it2][0];
+				short int cy = block_info[i][it2][1];
+				if(cx == tx && cy == ty) continue;
+				if(cy == ty && cx > tx) {
+					if(sx == 2 && sy == 3 && ty == 1) {
+						wall_cost = 4;
+					}
+					else {
+						wall_cost = 2;
+					}
+				}
+			}
+			line_info[tn][n_idx][RI] = compe_cost * wall_cost;
+			
+			// Map to bottom
+			compe_cost = 2;
+			compe_cost += lines_y[ty] - 1;
+			for(short int q = ty + 1; q < sy; q++) { compe_cost += lines_y[q] * 2; }
+			wall_cost = 1;
+			for(int it2 = 1; it2 < 5; it2++) {
+				short int cx = block_info[i][it2][0];
+				short int cy = block_info[i][it2][1];
+				if(cx == tx && cy == ty) continue;
+				if(cx == tx && cy > ty) {
+					if(sx == 3 && sy == 2 && tx == 1) {
+						wall_cost = 4;
+					}
+					else {
+						wall_cost = 2;
+					}
+				}
+			}
+			line_info[tn][n_idx][BO] = compe_cost * wall_cost;
+		}
+	}
+	
+	/// Print line information ///
+	cout << "== Line information ==" << endl;
+	cout << "#Lines = " << line_num << endl;
+	for(int l = 1; l <= line_num; l++) {
+		short int block1 = line_info[l][0][0];
+		short int block2 = line_info[l][1][0];
+		cout << "Line#" << l << ": ";
+		cout << "Block#" << block1 << "(";
+		for(int i = 1; i < 5; i++) {
+			cout << (float)line_info[l][0][i] / 2;
+			if(i != 4) { cout << ", "; }
+		}
+		cout << "), ";
+		cout << "Block#" << block2 << "(";
+		for(int i = 1; i < 5; i++) {
+			cout << (float)line_info[l][1][i] / 2;
+			if(i != 4) { cout << ", "; }
+		}
+		cout << ")" << endl;
+	}
+	/// Print line information ///
+}

solver_python/io.hpp

+#ifndef __IO_HPP__
+#define __IO_HPP__
+
+#include <iostream>
+#include <sstream>   // for istringstream
+#include <fstream>
+#include <algorithm> // for replace
+
+#include "param.hpp"
+
+using namespace std;
+
+void read_problem(const char *f_name, short int *W, short int *H, short int *blocks, short int *line_num, short int block_info[][5][3], short int line_info[][2][5]);
+void extract_line_info(short int line_num, short int blocks, short int block_info[][5][3], short int line_info[][2][5]);
+
+
+#endif /* __IO_HPP__ */

solver_python/main.cpp

+#include <iostream>
+#include <getopt.h>
+
+#include "param.hpp"
+#include "io.hpp"
+#include "solver.hpp"
+#include "tools.hpp"
+
+using namespace std;
+
+void usage() {
+	cout << "Usage: ./sim.exe [--problem input-file] [--output output-file] [--seed seed-value]" << endl;
+	exit(-1);
+}
+
+int main(int argc, char *argv[]) {
+	
+	char *p_filename = NULL;
+	char *out_filename = NULL;
+	uint32_t seed_v = 214;
+	
+	// Get options
+	struct option longopts[] = {
+		{"problem", required_argument, NULL, 'p'},
+		{"output", required_argument, NULL, 'o'},
+		{"seed", required_argument, NULL, 's'},
+		{0, 0, 0, 0}
+	};
+	int opt, optidx;
+	while((opt = getopt_long(argc, argv, "p:o:s:", longopts, &optidx)) != -1) {
+		switch(opt) {
+		case 'p':
+			p_filename = optarg;
+			break;
+		case 'o':
+			out_filename = optarg;
+			break;
+		case 's':
+			sscanf(optarg, "%u", &seed_v);
+			break;
+		default:
+			usage();
+		}
+	}
+	
+	// Init seed value
+	uint32_t seed[3];
+	srand(seed_v);
+	seed[0] = rand();
+	seed[1] = rand();
+	seed[2] = rand();
+	
+	// W: Max width of a board (specified in a problem file)
+	// H: Max height of a board (specified in a problem file)
+	// blocks: # of blocks (specified in a problem file)
+	short int W, H, blocks, line_num;
+	// W_ext: Width of a current solution
+	// H_ext: Height of a current solution
+	short int W_ext, H_ext;
+	
+	// block data
+	short int block_info[MAX_BLOCKS+1][5][3];
+	
+	// line data
+	short int line_info[MAX_LINES+1][2][5];
+	
+	// An opt. result will be stored in the array
+	short int opt_result[MAX_CELLS];
+	
+	// Check problem
+	read_problem(p_filename, &W, &H, &blocks, &line_num, block_info, line_info);
+	extract_line_info(line_num, blocks, block_info, line_info);
+	
+	// Solver body
+	int status = solver(seed, W, H, blocks, line_num, block_info, line_info, &W_ext, &H_ext, opt_result);
+	
+	// Check answer
+	if(status == 0) {
+		cout << "Fail re-routing" << endl;
+	}
+	else {
+		cout << "== Answer ==" << endl;
+		cout << "SIZE " << W_ext << "X" << H_ext << endl;
+		pair<short int,short int> block_place_basis[MAX_BLOCKS+1];
+		for(int i = 1; i <= blocks; i++) {
+			block_place_basis[i] = make_pair(block_info[i][0][0], block_info[i][0][1]);
+		}
+		show_result(line_num, blocks, W_ext, H_ext, opt_result, block_place_basis);
+	}
+	if(W_ext > W || H_ext > H) {
+		cout << "Fail satisfying constraint T_T" << endl;
+	}
+	else {
+		cout << "Satisfy constraint ^_^" << endl;
+		if(out_filename == NULL) return 0;
+		cout << "Output to " << out_filename << endl;
+		pair<short int,short int> block_place_basis[MAX_BLOCKS+1];
+		for(int i = 1; i <= blocks; i++) {
+			block_place_basis[i] = make_pair(block_info[i][0][0], block_info[i][0][1]);
+		}
+		output_to_file(out_filename, line_num, blocks, W_ext, H_ext, opt_result, block_place_basis);
+	}
+	
+	return 0;
+}

solver_python/main.py

+import numpy as np
+from argparse import ArgumentParser
+import mySolverModule
+
+def commandParsing():
+	parser = ArgumentParser()
+	parser.add_argument('-p', '--problem', help='Problem file name', required=True) # Required
+	parser.add_argument('-s', '--seed', help='seed value') # Option
+	parser.add_argument('-o', '--output', help='Output file name') # Option
+	args = vars(parser.parse_args())
+	return args
+
+def main(args):
+	seed_v = 214
+	if args['seed'] is not None: seed_v = int(args['seed'])
+	seed = mySolverModule.seed_generator(seed_v) # ndarray
+	info = mySolverModule.check_problem(args['problem']) # extract info (block, line, ...)
+
+	ret = mySolverModule.solver(seed, info['W'][0], info['H'][0], info['blocks'][0], info['line_num'][0], info['block_info'], info['line_info'])
+	
+	if ret['status'][0] == 0: print('Fail re-routing')
+	else: mySolverModule.show_result(ret['W_ext'][0], ret['H_ext'][0], info['blocks'][0], info['line_num'][0], ret['block_info'], ret['opt_result'])
+
+	if ret['W_ext'][0] > info['W'][0] or ret['H_ext'][0] > info['H'][0]:
+		print('Fail satisfying constraint T_T')
+	else:
+		print('Satisfy constraint ^_^')
+		if args['output'] is not None: mySolverModule.output_to_file(args['output'], ret['W_ext'][0], ret['H_ext'][0], info['blocks'][0], info['line_num'][0], ret['block_info'], ret['opt_result'])
+
+if __name__ == '__main__':
+
+	args = commandParsing()
+	main(args)

solver_python/param.hpp

+#ifndef __PARAM_HPP__
+#define __PARAM_HPP__
+
+#define MAX_BLOCKS 128
+#define MAX_LINES 256
+#define MAX_PATH 128
+#define MAX_CELLS 16384 // 128x128
+#define MAX_SIZE 128
+#define SLOT_MAX_SIZE 64
+
+
+#define ROUND_LIMIT 4096 //32768 // Max=65534(=2^16-2)
+//#define PRINT_BOARD
+//#define PRINT_SEARCH // for router debug
+
+#define PQ_BIT     16
+#define MAX_PQ  65536
+
+#define PRIO_BIT   16
+#define DATA_BIT   16
+#define ELEM_BIT   32 // ELEM_BIT = PRIO_BIT + DATA_BIT
+
+#define DATA_MASK  65535 // 0000 FFFF
+#define DATA_MAX   65535 // FFFF
+#define PRIO_MAX   65535 // FFFF
+
+#define LE 1
+#define TO 2
+#define RI 3
+#define BO 4
+
+#define SA_O   1000
+#define SA_I   100000
+#define TEMP_S 500
+#define TEMP_E 0.1
+
+#define INTER_BLOCK_MARGIN 2
+
+#define LOOP 50
+#define TRY_LIMIT 500
+#define NO_MOVE 10
+
+#define LFSR_RAND_MAX 4294967295
+
+#endif /* __PARAM_HPP__ */

solver_python/sample_A.txt

+SIZE 8X10
+1, 1, 1, 2, 2, 2, 2, 0
+0, 0, 4, 0, 0, 0, 2, 2
+8, 8, 4, 4, 4, 0, 4, 2
+7, 8, 0, 0, 4, 4, 4, 2
+7, 6, 0, 0, 0, 0, 2, 2
+0, 6, 6, 6, 5, 11, 0, 0
+10, 10, 10, 6, 5, 11, 0, 0
+0, 9, 5, 5, 5, 0, 0, 3
+3, 9, 3, 3, 3, 3, 3, 3
+3, 3, 3, 0, 0, 0, 0, 0
+BLOCK#1 @(0,0)
+BLOCK#2 @(0,3)
+BLOCK#3 @(0,6)
+BLOCK#4 @(2,0)
+BLOCK#5 @(5,6)
+BLOCK#6 @(4,4)
+BLOCK#7 @(1,6)
+BLOCK#8 @(4,1)

solver_python/sample_Q.txt

+SIZE 10X10
+BLOCK_NUM 8
+
+BLOCK#1 1X4
+1
++
+8
+7
+
+BLOCK#2 3X2
+0,8,0
+7,6,+
+
+BLOCK#3 2X3
+10,0
+ +,0
+ 3,9
+
+BLOCK#4 2X2
+1,2
+4,+
+
+BLOCK#5 3X2
+11,+,+
+ 0,0,3
+
+BLOCK#6 3X2
+0, +,2
+5,11,0
+
+BLOCK#7 3X2
+0,10,6
+9, 5,0
+
+BLOCK#8 3X2
++,+,0
+0,+,4
\ No newline at end of file

solver_python/setup.py

+from distutils.core import setup, Extension
+
+setup(name = 'mySolverModule', version = '1.0.0', ext_modules = [Extension('mySolverModule', sources=['py_wrapper.cpp','io.cpp','solver.cpp','tools.cpp'], extra_compile_args=['-O3', '-w'])])
+

solver_python/solver.hpp

+#ifndef __SOLVER_HPP__
+#define __SOLVER_HPP__
+
+#include "/usr/include/python3.5m/Python.h"
+
+#include <iostream>
+#include <math.h>
+
+#include "param.hpp"
+#include "tools.hpp"
+
+using namespace std;
+
+int solver(uint32_t seed[3], short int W, short int H, short int blocks, short int line_num, short int block_info[][5][3], short int line_info[][2][5], short int *pwi, short int *phi, short int opt_result[]);
+
+void lfsr_random_init(uint32_t seed, uint32_t seed_x, uint32_t seed_y);
+uint32_t lfsr_random();
+uint32_t lfsr_x_random();
+uint32_t lfsr_y_random();
+
+void global_placement(short int W, short int H, short int line_num, short int blocks, short int block_info[][5][3], short int line_info[][2][5], pair<short int,short int> block_place_global[]);
+float calcPlaceCost(short int line_num, short int line_info[][2][5], pair<short int,short int> block_place_global[]);
+bool local_placement_with_routing_1(short int line_num, short int blocks, short int *pwi, short int *phi, short int block_info[][5][3], pair<short int,short int> block_place_global[], short int opt_result[]);
+bool local_placement_with_routing_2(short int line_num, short int blocks, short int *pwi, short int *phi, short int block_info[][5][3], short int opt_result[]);
+pair<short int,short int> add_pair(pair<short int,short int> x, pair<short int,short int> y);
+pair<short int,short int> sub_pair(pair<short int,short int> x, pair<short int,short int> y);
+
+unsigned short int new_weight(unsigned short int x);
+
+int router(short int size_x, short int size_y, short int line_num, short int board_str[MAX_CELLS]);
+
+int search(short int size_x, short int size_y, short int *path_size, unsigned short int path[MAX_PATH], unsigned short int start, unsigned short int goal, unsigned short int w[MAX_CELLS]);
+void enqueue(unsigned int pq_nodes[MAX_PQ], unsigned short int priority, unsigned short int data, unsigned short int *pq_len, bool *is_empty);
+void dequeue(unsigned int pq_nodes[MAX_PQ], unsigned short int *ret_priority, unsigned short int *ret_data, unsigned short int *pq_len, bool *is_empty);
+
+#endif /* __SOLVER_HPP__ */

solver_python/tools.cpp

+#include "tools.hpp"
+
+void output_to_file(char *f_name, short int line_num, short int blocks, short int wi, short int hi, short int board[], pair<short int,short int> block_place[]) {
+	
+	ofstream outputfile(f_name);
+	
+	outputfile << "SIZE " << wi << "X" << hi << endl;
+	for(short int q = 0; q < hi; q++) {
+		for(short int p = 0; p < wi; p++) {
+			short int n = board[q*MAX_SIZE+p];
+			if(n == 0) { outputfile << 0; }
+			else if(n == -1) { outputfile << 0; }
+			else{ outputfile << n; }
+			if(p != wi-1) { outputfile << ", "; }
+		}
+		outputfile << endl;
+	}
+	outputfile << setfill(' ');
+	outputfile << dec;
+	for(int i = 1; i <= blocks; i++) {
+		outputfile << "BLOCK#" << i << " @(" << block_place[i].first << "," << block_place[i].second << ")" << endl;
+	}
+	
+	outputfile.close();
+}
+
+void show_result(short int line_num, short int blocks, short int wi, short int hi, short int board[], pair<short int,short int> block_place[]) {
+	
+	// This shows a number from 1 to 255
+	for(short int q = 0; q < hi; q++) {
+		for(short int p = 0; p < wi; p++) {
+			short int n = board[q*MAX_SIZE+p];
+			if(n == 0) { cout << "--"; }
+			else if(n == -1) { cout << "XX"; }
+			else{ cout << setfill('0') << setw(2) << hex << n; }
+			if(p != wi-1) { cout << " "; }
+		}
+		cout << endl;
+	}
+	cout << setfill(' ');
+	cout << dec;
+	//for(int i = 1; i <= blocks; i++) {
+	//	cout << "BLOCK#" << i << " @(" << block_place[i].first << "," << block_place[i].second << ")" << endl;
+	//}
+}

solver_python/tools.hpp

+#ifndef __TOOLS_HPP__
+#define __TOOLS_HPP__
+
+using namespace std;
+
+#include <iostream>
+#include <iomanip>   // for setw
+#include <fstream>
+
+#include "param.hpp"
+
+void output_to_file(char *f_name, short int line_num, short int blocks, short int wi, short int hi, short int board[], pair<short int,short int> block_place[]);
+void show_result(short int line_num, short int blocks, short int wi, short int hi, short int board[], pair<short int,short int> block_place[]);
+
+#endif /* __TOOLS_HPP__ */