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Use a faster memory test

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We have now many buffers to test, and we need a faster test.
This commit is contained in:
Andrea Mazzoleni 2016-01-03 18:57:58 +01:00
parent 55ac2b0d25
commit b619b9bee1
1 changed files with 31 additions and 1 deletions
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32
cmdline/util.c
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@ -68,9 +68,39 @@ void* malloc_nofail_test(size_t size)
return ptr;
}
/**
* Fast memory test.
*
* It's similat at raid_mtest_vector() but faster because
* we have a lot of buffers to verify.
*/
static int fast_mtest_vector(int n, size_t size, void** vv)
{
int i, j;
/* test with all the bits */
for (i = 0; i < 8; ++i) {
unsigned char value = 1 << i;
/* fill first */
memset(vv[0], value, size);
/* copy to the next */
for (j = 1; j < n; ++j)
memcpy(vv[j], vv[j-1], size);
/* compare with the previous */
for (j = 1; j <= n; ++j)
if (memcmp(vv[j % n], vv[j-1], size) != 0)
return -1;
}
return 0;
}
void mtest_vector(int n, size_t size, void** vv)
{
if (raid_mtest_vector(n, size, vv) != 0) {
if (fast_mtest_vector(n, size, vv) != 0) {
/* LCOV_EXCL_START */
log_fatal("DANGER! Your RAM memory is broken! DO NOT PROCEED UNTIL FIXED!\n");
log_fatal("Try running a memory test like http://www.memtest86.com/\n");