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