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/****************************************************************
* *
* Copyright (c) 2001-2022 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gtm_unistd.h"
#include "get_page_size.h"
#include "gtm_sizeof.h"
#include "gtm_stdio.h"
#include "gtm_string.h"
#include "gtmio.h"
GBLDEF int4 gtm_os_page_size;
GBLDEF long gtm_os_hugepage_size = -1;
GBLREF bool hugetlb_shm_enabled;
void get_page_size(void)
{
gtm_os_page_size = getpagesize();
return;
}
void get_hugepage_size(void)
{
FILE *info;
int hps, res;
char line[1024];
char *fgets_res;
gtm_os_hugepage_size = gtm_os_page_size; /* Default to regular page size */
if (hugetlb_shm_enabled)
{
Fopen(info, "/proc/meminfo", "r");
if (NULL != info)
{
FEOF(info, res);
while (!res)
{
res = FSCANF(info, "Hugepagesize: %d kB", &hps);
if (EOF == res || ferror(info))
break;
else if (1 == res && 0 < hps)
{
gtm_os_hugepage_size = (long)(1024*hps);
break;
}
else if (0 != res)
break;
FGETS(line, SIZEOF(line), info, fgets_res); /* Consume the line */
FEOF(info, res);
}
FCLOSE(info, res);
}
}
return;
}
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