Back to index

glibc  2.9
Defines | Typedefs | Functions
test-strcat.c File Reference
#include "test-string.h"
#include "../test-skeleton.c"

Go to the source code of this file.

Defines

#define TEST_MAIN

Typedefs

typedef char *(* proto_t )(char *, const char *)

Functions

char * simple_strcat (char *, const char *)
static void do_one_test (impl_t *impl, char *dst, const char *src)
static void do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
static void do_random_tests (void)
int test_main (void)

Define Documentation

#define TEST_MAIN

Definition at line 21 of file test-strcat.c.


Typedef Documentation

typedef char*(* proto_t)(char *, const char *)

Definition at line 24 of file test-strcat.c.


Function Documentation

static void do_one_test ( impl_t impl,
char *  dst,
const char *  src 
) [static]

Definition at line 41 of file test-strcat.c.

{
  size_t k = strlen (dst);
  if (CALL (impl, dst, src) != dst)
    {
      error (0, 0, "Wrong result in function %s %p %p", impl->name,
            CALL (impl, dst, src), dst);
      ret = 1;
      return;
    }

  if (strcmp (dst + k, src) != 0)
    {
      error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
            impl->name, dst, src);
      ret = 1;
      return;
    }

  if (HP_TIMING_AVAIL)
    {
      hp_timing_t start __attribute ((unused));
      hp_timing_t stop __attribute ((unused));
      hp_timing_t best_time = ~ (hp_timing_t) 0;
      size_t i;

      for (i = 0; i < 32; ++i)
       {
         dst[k] = '\0';
         HP_TIMING_NOW (start);
         CALL (impl, dst, src);
         HP_TIMING_NOW (stop);
         HP_TIMING_BEST (best_time, start, stop);
       }

      printf ("\t%zd", (size_t) best_time);
    }
}

Here is the call graph for this function:

static void do_random_tests ( void  ) [static]

Definition at line 118 of file test-strcat.c.

{
  size_t i, j, n, align1, align2, len1, len2;
  unsigned char *p1 = buf1 + page_size - 512;
  unsigned char *p2 = buf2 + page_size - 512;
  unsigned char *res;

  for (n = 0; n < ITERATIONS; n++)
    {
      align1 = random () & 31;
      if (random () & 1)
       align2 = random () & 31;
      else
       align2 = align1 + (random () & 24);
      len1 = random () & 511;
      if (len1 + align2 > 512)
       len2 = random () & 7;
      else
       len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
              / (1024 * 1024);
      j = align1;
      if (align2 + len2 > j)
       j = align2 + len2;
      if (len1 + j >= 511)
       len1 = 510 - j - (random () & 7);
      if (len1 >= 512)
       len1 = 0;
      if (align1 + len1 < 512 - 8)
       {
         j = 510 - align1 - len1 - (random () & 31);
         if (j > 0 && j < 512)
           align1 += j;
       }
      j = len1 + align1 + 64;
      if (j > 512)
       j = 512;
      for (i = 0; i < j; i++)
       {
         if (i == len1 + align1)
           p1[i] = 0;
         else
           {
             p1[i] = random () & 255;
             if (i >= align1 && i < len1 + align1 && !p1[i])
              p1[i] = (random () & 127) + 3;
           }
       }
      for (i = 0; i < len2; i++)
       {
         buf1[i] = random () & 255;
         if (!buf1[i])
           buf1[i] = (random () & 127) + 3;
       }
      buf1[len2] = 0;

      FOR_EACH_IMPL (impl, 1)
       {
         memset (p2 - 64, '\1', align2 + 64);
         memset (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
         memcpy (p2 + align2, buf1, len2 + 1);
         res = (unsigned char *) CALL (impl, (char *) (p2 + align2),
                                   (char *) (p1 + align1));
         if (res != p2 + align2)
           {
             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
                   n, impl->name, align1, align2, len1, len2, res,
                   p2 + align2);
             ret = 1;
           }
         for (j = 0; j < align2 + 64; ++j)
           {
             if (p2[j - 64] != '\1')
              {
                error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
                      n, impl->name, align1, align2, len1, len2);
                ret = 1;
                break;
              }
           }
         if (memcmp (p2 + align2, buf1, len2))
           {
             error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
                   n, impl->name, align1, align2, len1, len2);
             ret = 1;
           }
         for (j = align2 + len1 + len2 + 1; j < 512; ++j)
           {
             if (p2[j] != '\1')
              {
                error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
                      n, impl->name, align1, align2, len1, len2);
                ret = 1;
                break;
              }
           }
         if (memcmp (p1 + align1, p2 + align2 + len2, len1 + 1))
           {
             error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
                   n, impl->name, align1, align2, len1, len2);
             ret = 1;
           }
       }
    }
}

Here is the call graph for this function:

Here is the caller graph for this function:

static void do_test ( size_t  align1,
size_t  align2,
size_t  len1,
size_t  len2,
int  max_char 
) [static]

Definition at line 81 of file test-strcat.c.

{
  size_t i;
  char *s1, *s2;

  align1 &= 7;
  if (align1 + len1 >= page_size)
    return;

  align2 &= 7;
  if (align2 + len1 + len2 >= page_size)
    return;

  s1 = (char *) (buf1 + align1);
  s2 = (char *) (buf2 + align2);

  for (i = 0; i < len1; ++i)
    s1[i] = 32 + 23 * i % (max_char - 32);
  s1[len1] = '\0';

  for (i = 0; i < len2; i++)
    s2[i] = 32 + 23 * i % (max_char - 32);

  if (HP_TIMING_AVAIL)
    printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2);

  FOR_EACH_IMPL (impl, 0)
    {
      s2[len2] = '\0';
      do_one_test (impl, s2, s1);
    }

  if (HP_TIMING_AVAIL)
    putchar ('\n');
}

Here is the call graph for this function:

char * simple_strcat ( char *  dst,
const char *  src 
)

Definition at line 31 of file test-strcat.c.

{
  char *ret = dst;
  while (*dst++ != '\0');
  --dst;
  while ((*dst++ = *src++) != '\0');
  return ret;
}
int test_main ( void  )

Definition at line 224 of file test-strcat.c.

{
  size_t i;

  test_init ();

  printf ("%28s", "");
  FOR_EACH_IMPL (impl, 0)
    printf ("\t%s", impl->name);
  putchar ('\n');

  for (i = 0; i < 16; ++i)
    {
      do_test (0, 0, i, i, 127);
      do_test (0, 0, i, i, 255);
      do_test (0, i, i, i, 127);
      do_test (i, 0, i, i, 255);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (0, 0, 8 << i, 8 << i, 127);
      do_test (8 - i, 2 * i, 8 << i, 8 << i, 127);
      do_test (0, 0, 8 << i, 2 << i, 127);
      do_test (8 - i, 2 * i, 8 << i, 2 << i, 127);
    }

  for (i = 1; i < 8; ++i)
    {
      do_test (i, 2 * i, 8 << i, 1, 127);
      do_test (2 * i, i, 8 << i, 1, 255);
      do_test (i, i, 8 << i, 10, 127);
      do_test (i, i, 8 << i, 10, 255);
    }

  do_random_tests ();
  return ret;
}

Here is the call graph for this function: