270 lines
6.7 KiB
C
270 lines
6.7 KiB
C
/*=============================================================================
|
|
|
|
This file is part of FLINT.
|
|
|
|
FLINT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
FLINT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with FLINT; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2010 Sebastian Pancratz
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <gmp.h>
|
|
|
|
#include "flint.h"
|
|
#include "fmpz.h"
|
|
#include "fmpz_poly.h"
|
|
|
|
#if !defined (__WIN32) || defined(__CYGWIN__)
|
|
|
|
/*
|
|
The function fdopen is declared in stdio.h. It is POSIX.1 compliant,
|
|
but not ANSI compliant. The following line enables compilation with
|
|
the "-ansi" flag.
|
|
*/
|
|
extern FILE * fdopen(int fildes, const char *mode);
|
|
|
|
int main(void)
|
|
{
|
|
int i, j, n = 1000, result;
|
|
|
|
FILE *in, *out;
|
|
int fd[2];
|
|
pid_t childpid;
|
|
|
|
FLINT_TEST_INIT(state);
|
|
|
|
flint_printf("print/ read....");
|
|
fflush(stdout);
|
|
|
|
/* Randomise n polynomials, write to and read from a pipe */
|
|
{
|
|
fmpz_poly_t *a;
|
|
|
|
a = flint_malloc(n * sizeof(fmpz_poly_t));
|
|
for (i = 0; i < n; i++)
|
|
{
|
|
fmpz_poly_init(a[i]);
|
|
fmpz_poly_randtest(a[i], state, 100, 100);
|
|
}
|
|
|
|
if (pipe(fd))
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Failed to set-up the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
if((childpid = fork()) == -1)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Failed to fork the process.\n");
|
|
abort();
|
|
}
|
|
|
|
if(childpid == 0) /* Child process */
|
|
{
|
|
int r;
|
|
|
|
close(fd[0]);
|
|
out = fdopen(fd[1], "w");
|
|
if (out == NULL)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Could not open output file at the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
for (j = 0; j < n; j++)
|
|
{
|
|
r = fmpz_poly_fprint(out, a[j]);
|
|
if ((j < n - 1) && (r > 0))
|
|
r = flint_fprintf(out, "\n");
|
|
|
|
if (r <= 0)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Write error.\n");
|
|
abort();
|
|
}
|
|
}
|
|
|
|
fclose(out);
|
|
exit(0);
|
|
}
|
|
else /* Parent process */
|
|
{
|
|
int r;
|
|
fmpz_poly_t t;
|
|
|
|
close(fd[1]);
|
|
in = fdopen(fd[0], "r");
|
|
if (in == NULL)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Could not open input file at the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
fmpz_poly_init(t);
|
|
|
|
i = 0;
|
|
while (!feof(in))
|
|
{
|
|
r = fmpz_poly_fread(in, t);
|
|
if (r <= 0)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Read error.\n");
|
|
abort();
|
|
}
|
|
|
|
result = fmpz_poly_equal(t, a[i]);
|
|
if (!result)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("a[i] = "), fmpz_poly_print(a[i]), flint_printf("\n");
|
|
flint_printf("t = "), fmpz_poly_print(t), flint_printf("\n");
|
|
abort();
|
|
}
|
|
|
|
++i;
|
|
}
|
|
|
|
fmpz_poly_clear(t);
|
|
fclose(in);
|
|
}
|
|
|
|
if (i != n)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Only %d out of %d objects were processed.\n", i, n);
|
|
abort();
|
|
}
|
|
|
|
for (i = 0; i < n; i++)
|
|
fmpz_poly_clear(a[i]);
|
|
flint_free(a);
|
|
}
|
|
|
|
/* Write bad data to a pipe and read it */
|
|
{
|
|
char str[5] = {'b', 'l', 'a', 'h', '\0'};
|
|
|
|
if (pipe(fd))
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Failed to set-up the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
if((childpid = fork()) == -1)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Failed to fork the process.\n");
|
|
abort();
|
|
}
|
|
|
|
if(childpid == 0) /* Child process */
|
|
{
|
|
int r;
|
|
|
|
close(fd[0]);
|
|
out = fdopen(fd[1], "w");
|
|
if (out == NULL)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Could not open output file at the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
r = flint_fprintf(out, "blah");
|
|
if (r <= 0)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Write error.\n");
|
|
abort();
|
|
}
|
|
|
|
fclose(out);
|
|
exit(0);
|
|
}
|
|
else /* Parent process */
|
|
{
|
|
int r;
|
|
fmpz_poly_t t;
|
|
|
|
close(fd[1]);
|
|
in = fdopen(fd[0], "r");
|
|
if (in == NULL)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Could not open input file at the pipe.\n");
|
|
abort();
|
|
}
|
|
|
|
fmpz_poly_init(t);
|
|
|
|
i = 0;
|
|
while (!feof(in))
|
|
{
|
|
r = fmpz_poly_fread(in, t);
|
|
if (r > 0)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("r = %d\n", r);
|
|
abort();
|
|
}
|
|
++i;
|
|
}
|
|
|
|
fmpz_poly_clear(t);
|
|
fclose(in);
|
|
}
|
|
|
|
/* For {'b','l','a','h','\0'} we expect 5 reads */
|
|
if (i != 5)
|
|
{
|
|
flint_printf("FAIL:\n");
|
|
flint_printf("Carried out %d reads, but \"%s\" has only 4 characters.\n", i, str);
|
|
abort();
|
|
}
|
|
}
|
|
|
|
FLINT_TEST_CLEANUP(state);
|
|
|
|
flint_printf("PASS\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#else
|
|
|
|
int main(void)
|
|
{
|
|
flint_printf("print/ read....");
|
|
fflush(stdout);
|
|
flint_printf("SKIPPED\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
#endif
|