xref: /third_party/ltp/testcases/kernel/syscalls/mallinfo/mallinfo01.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (c) 2021 FUJITSU LIMITED. All rights reserved.
 * Author: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
 */

/*\
 * [Description]
 *
 * Basic mallinfo() test. Refer to glibc test mallinfo2 test
 * https://sourceware.org/git/?p=glibc.git;a=blob;f=malloc/tst-mallinfo2.c
 */
#include "mallinfo_common.h"
#include "tst_safe_macros.h"

#ifdef HAVE_MALLINFO
#define M_NUM 20
static struct mallinfo info1;
static void *buf[M_NUM + 1];

static void cleanup(void)
{
	int i;

	for (i = M_NUM; i > 0; i--) {
		if (buf[i]) {
			free(buf[i]);
			buf[i] = NULL;
		}
	}
}

void test_mallinfo(void)
{
	int i;
	int total = 0;
	struct mallinfo info2;

	for (i = 1; i <= M_NUM; i++) {
		buf[i] = SAFE_MALLOC(160 * i);
		total += 160 * i;
	}
	info2 = mallinfo();
	print_mallinfo("Test uordblks", &info2);
	if (info2.uordblks >= info1.uordblks + total)
		tst_res(TPASS, "mallinfo() uordblks passed");
	else
		tst_res(TFAIL, "mallinfo() uordblks failed");

	//Create another free chunk
	free(buf[M_NUM/2]);
	buf[M_NUM/2] = NULL;
	info2 = mallinfo();
	print_mallinfo("Test ordblks", &info2);
	if (info2.ordblks == info1.ordblks + 1)
		tst_res(TPASS, "mallinfo() ordblks passed");
	else
		tst_res(TFAIL, "mallinfo() ordblks failed");

	cleanup();
}

static void setup(void)
{
	if (sizeof(info1.arena) != sizeof(int))
		tst_res(TFAIL, "The member of mallinfo struct is not int");

	info1 = mallinfo();
	print_mallinfo("Start", &info1);
}

static struct tst_test test = {
	.setup = setup,
	.test_all = test_mallinfo,
	.cleanup = cleanup,
};

#else
TST_TEST_TCONF("system doesn't implement non-POSIX mallinfo()");
#endif