h48

tool.h (5183B)

---

 #include <time.h>
 #include <stdarg.h>
 #include <stdbool.h>
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "../src/nissy.h"
 #include "nissy_extra.h"
 
 static void log_stderr(const char *, void *);
 static double timerun(void (*)(void));
 static void writetable(const unsigned char *, int64_t, const char *);
 static long long int generatetable(const char *, unsigned char **,
     char [static NISSY_SIZE_DATAID]);
 static long long int derivetable(
     const char *, const char *, const char *, unsigned char **);
 static int getdata(const char *, unsigned char **, const char *);
 static void gendata_run(const char *, uint64_t[static 21]);
 static void derivedata_run(
     const char *, const char *, const char *, const char *);
 
 static void
 log_stderr(const char *str, void *unused)
 {
 	fprintf(stderr, "%s", str);
 }
 
 static double
 timerun(void (*run)(void))
 {
 	struct timespec start, end;
 	double tdiff, tdsec, tdnano;
 
 	fflush(stdout);
 
 	if (run == NULL) {
 		printf("nothing to run!\n");
 		fflush(stdout);
 		return -1.0;
 	}
 
 	clock_gettime(CLOCK_MONOTONIC, &start);
 	run();
 	clock_gettime(CLOCK_MONOTONIC, &end);
 
 	tdsec = end.tv_sec - start.tv_sec;
 	tdnano = end.tv_nsec - start.tv_nsec;
 	tdiff = tdsec + 1e-9 * tdnano;
 
 	printf("---------\n");
 	printf("\nTotal time: %.4fs\n", tdiff);
 	fflush(stdout);
 
 	return tdiff;
 }
 
 static void
 writetable(const unsigned char *buf, int64_t size, const char *filename)
 {
 	FILE *f;
 
 	if ((f = fopen(filename, "wb")) == NULL) {
 		printf("Could not write tables to file %s"
 		    ", will be regenerated next time.\n", filename);
 	} else {
 		fwrite(buf, size, 1, f);
 		fclose(f);
 		printf("Table written to %s.\n", filename);
 	}
 }
 
 static long long int
 generatetable(
 	const char *solver,
 	unsigned char **buf,
 	char dataid[static NISSY_SIZE_DATAID]
 )
 {
 	long long int size, gensize;
 
 	size = nissy_solverinfo(solver, dataid);
 	if (size < 0) {
 		printf("Error getting table size.\n");
 		return -1;
 	}
 
 	*buf = malloc(size);
 	gensize = nissy_gendata(solver, size, *buf);
 
 	if (gensize != size) {
 		printf("Error generating table");
 		if (gensize == NISSY_OK)
 			printf(" (got %lld bytes)", gensize);
 		printf("\n");
 		return -2;
 	}
 
 	return gensize;
 }
 
 static long long int
 derivetable(
 	const char *solver_large,
 	const char *solver_small,
 	const char *filename_large,
 	unsigned char **buf
 )
 {
 	uint8_t h, k;
 	long long int size, gensize;
 	char dataid[NISSY_SIZE_DATAID];
 	unsigned char *fulltable;
 
 	if (getdata(solver_large, &fulltable, filename_large) != 0) {
 		printf("Error reading full table.\n");
 		gensize = -1;
 		goto derivetable_error_nofree;
 	}
 
 	size = nissy_solverinfo(solver_small, dataid);
 	if (size == -1) {
 		printf("Error getting table size.\n");
 		gensize = -2;
 		goto derivetable_error;
 	}
 
 	if (parse_h48_solver(solver_small, &h, &k) != 0) {
 		gensize = -3;
 		goto derivetable_error;
 	}
 
 	*buf = malloc(size);
 	gensize = gendata_h48_derive(h, fulltable, *buf);
 
 	if (gensize != size) {
 		printf("Error deriving table\n");
 		gensize = -4;
 		goto derivetable_error;
 	}
 
 derivetable_error:
 	free(fulltable);
 
 derivetable_error_nofree:
 	return gensize;
 }
 
 static int
 getdata(
 	const char *solver,
 	unsigned char **buf,
 	const char *filename
 ) {
 	long long int size, sizeread;
 	FILE *f;
 	char dataid[NISSY_SIZE_DATAID];
 
 	if ((f = fopen(filename, "rb")) == NULL) {
 		printf("Table file not found, generating it.\n");
 		size = generatetable(solver, buf, dataid);
 		switch (size) {
 		case -1:
 			goto getdata_error_nofree;
 		case -2:
 			goto getdata_error;
 		default:
 			writetable(*buf, size, filename);
 			break;
 		}
 	} else {
 		printf("Reading tables from file %s\n", filename);
 		size = nissy_solverinfo(solver, dataid);
 		*buf = malloc(size);
 		sizeread = fread(*buf, size, 1, f);
 		fclose(f);
 		if (sizeread != 1) {
 			printf("Error reading table, stopping\n");
 			goto getdata_error;
 		}
 	}
 
 	return 0;
 
 getdata_error:
 	free(*buf);
 getdata_error_nofree:
 	return 1;
 }
 
 static void
 gendata_run(
 	const char *solver,
 	uint64_t expected[static 21]
 ) {
 	long long int size;
 	char filename[1024], dataid[NISSY_SIZE_DATAID];
 	unsigned char *buf;
 
 	size = generatetable(solver, &buf, dataid);
 	sprintf(filename, "tables/%s", dataid);
 	switch (size) {
 	case -1:
 		return;
 	case -2:
 		goto gendata_run_finish;
 	default:
 		nissy_datainfo(size, buf);
 		printf("\n");
 		printf("Succesfully generated %lld bytes. "
 		       "See above for details on the tables.\n", size);
 
 		/* TODO: check that the table is correct */
 		writetable(buf, size, filename);
 		break;
 	}
 
 gendata_run_finish:
 	free(buf);
 }
 
 static void
 derivedata_run(
 	const char *solver_large,
 	const char *solver_small,
 	const char *filename_large,
 	const char *filename_small
 )
 {
 	long long int size;
 	unsigned char *buf;
 
 	buf = NULL;
 	size = derivetable(solver_large, solver_small, filename_large, &buf);
 	switch (size) {
 	case -1:
 		return;
 	case -2:
 		goto derivedata_run_finish;
 	default:
 		nissy_datainfo(size, buf);
 		printf("\n");
 		printf("Succesfully generated %lld bytes. "
 		       "See above for details on the tables.\n", size);
 
 		writetable(buf, size, filename_small);
 		break;
 	}
 
 derivedata_run_finish:
 	free(buf);
 }