1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/xpcom/tests/TestJemalloc.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,78 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +/*
1.10 + * Ideally, this test would be in memory/test/. But I couldn't get it to build
1.11 + * there (couldn't find TestHarness.h). I think memory/ is processed too early
1.12 + * in the build. So it's here.
1.13 + */
1.14 +
1.15 +#include "TestHarness.h"
1.16 +#include "mozmemory.h"
1.17 +
1.18 +static inline bool
1.19 +TestOne(size_t size)
1.20 +{
1.21 + size_t req = size;
1.22 + size_t adv = malloc_good_size(req);
1.23 + char* p = (char*)malloc(req);
1.24 + size_t usable = moz_malloc_usable_size(p);
1.25 + if (adv != usable) {
1.26 + fail("malloc_good_size(%d) --> %d; "
1.27 + "malloc_usable_size(%d) --> %d",
1.28 + req, adv, req, usable);
1.29 + return false;
1.30 + }
1.31 + free(p);
1.32 + return true;
1.33 +}
1.34 +
1.35 +static inline bool
1.36 +TestThree(size_t size)
1.37 +{
1.38 + return TestOne(size - 1) && TestOne(size) && TestOne(size + 1);
1.39 +}
1.40 +
1.41 +static nsresult
1.42 +TestJemallocUsableSizeInAdvance()
1.43 +{
1.44 + #define K * 1024
1.45 + #define M * 1024 * 1024
1.46 +
1.47 + /*
1.48 + * Test every size up to a certain point, then (N-1, N, N+1) triplets for a
1.49 + * various sizes beyond that.
1.50 + */
1.51 +
1.52 + for (size_t n = 0; n < 16 K; n++)
1.53 + if (!TestOne(n))
1.54 + return NS_ERROR_UNEXPECTED;
1.55 +
1.56 + for (size_t n = 16 K; n < 1 M; n += 4 K)
1.57 + if (!TestThree(n))
1.58 + return NS_ERROR_UNEXPECTED;
1.59 +
1.60 + for (size_t n = 1 M; n < 8 M; n += 128 K)
1.61 + if (!TestThree(n))
1.62 + return NS_ERROR_UNEXPECTED;
1.63 +
1.64 + passed("malloc_good_size");
1.65 +
1.66 + return NS_OK;
1.67 +}
1.68 +
1.69 +int main(int argc, char** argv)
1.70 +{
1.71 + int rv = 0;
1.72 + ScopedXPCOM xpcom("jemalloc");
1.73 + if (xpcom.failed())
1.74 + return 1;
1.75 +
1.76 + if (NS_FAILED(TestJemallocUsableSizeInAdvance()))
1.77 + rv = 1;
1.78 +
1.79 + return rv;
1.80 +}
1.81 +
