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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/mozalloc.h"
#include "mozmemory.h"
#include "gtest/gtest.h"
static inline void
TestOne(size_t size)
{
size_t req = size;
size_t adv = malloc_good_size(req);
char* p = (char*)malloc(req);
size_t usable = moz_malloc_usable_size(p);
// NB: Using EXPECT here so that we still free the memory on failure.
EXPECT_EQ(adv, usable) <<
"malloc_good_size(" << req << ") --> " << adv << "; "
"malloc_usable_size(" << req << ") --> " << usable;
free(p);
}
static inline void
TestThree(size_t size)
{
ASSERT_NO_FATAL_FAILURE(TestOne(size - 1));
ASSERT_NO_FATAL_FAILURE(TestOne(size));
ASSERT_NO_FATAL_FAILURE(TestOne(size + 1));
}
TEST(Jemalloc, UsableSizeInAdvance)
{
#define K * 1024
#define M * 1024 * 1024
/*
* Test every size up to a certain point, then (N-1, N, N+1) triplets for a
* various sizes beyond that.
*/
for (size_t n = 0; n < 16 K; n++)
ASSERT_NO_FATAL_FAILURE(TestOne(n));
for (size_t n = 16 K; n < 1 M; n += 4 K)
ASSERT_NO_FATAL_FAILURE(TestThree(n));
for (size_t n = 1 M; n < 8 M; n += 128 K)
ASSERT_NO_FATAL_FAILURE(TestThree(n));
}
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