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|
#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 *, ...);
static void log_stdout(const char *, ...);
static double timerun(void (*)(void));
static void writetable(const char *, int64_t, const char *);
static int64_t generatetable(const char *, char **);
static int64_t derivetable(const char *, const char *, const char *, char **);
static int getdata(const char *, 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, ...)
{
va_list args;
va_start(args, str);
vfprintf(stderr, str, args);
va_end(args);
}
static void
write_stdout(const char *str, ...)
{
va_list args;
va_start(args, str);
vfprintf(stdout, str, args);
va_end(args);
}
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 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 int64_t
generatetable(const char *solver, char **buf)
{
int64_t size, gensize;
size = nissy_datasize(solver);
if (size == -1) {
printf("Error getting table size.\n");
return -1;
}
*buf = malloc(size);
gensize = nissy_gendata(solver, *buf);
if (gensize != size) {
printf("Error generating table");
if (gensize != -1)
printf(" (got %" PRId64 " bytes)", gensize);
printf("\n");
return -2;
}
return gensize;
}
static int64_t
derivetable(
const char *solver_large,
const char *solver_small,
const char *filename_large,
char **buf
)
{
uint8_t h, k;
int64_t size, gensize;
char *fulltable;
if (getdata(solver_large, &fulltable, filename_large) != 0) {
printf("Error reading full table.\n");
gensize = -1;
goto derivetable_error_nofree;
}
size = nissy_datasize(solver_small);
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,
char **buf,
const char *filename
) {
int64_t size, sizeread;
FILE *f;
if ((f = fopen(filename, "rb")) == NULL) {
printf("Table file not found, generating it.\n");
size = generatetable(solver, buf);
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_datasize(solver);
*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]
) {
int64_t size;
char *buf, filename[1024];
sprintf(filename, "tables/%s", solver);
size = generatetable(solver, &buf);
switch (size) {
case -1:
return;
case -2:
goto gendata_run_finish;
default:
nissy_datainfo(buf, write_stdout);
printf("\n");
printf("Succesfully generated %" PRId64 " 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
)
{
int64_t size;
char *buf;
size = derivetable(solver_large, solver_small, filename_large, &buf);
switch (size) {
case -1:
return;
case -2:
goto derivedata_run_finish;
default:
nissy_datainfo(buf, write_stdout);
printf("\n");
printf("Succesfully generated %" PRId64 " bytes. "
"See above for details on the tables.\n", size);
writetable(buf, size, filename_small);
break;
}
derivedata_run_finish:
free(buf);
}
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