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/*
* Copyright (C) 2019-2021 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/Packed.h>
#include <wtf/HashMap.h>
#include <wtf/MathExtras.h>
#include <wtf/Vector.h>
#if OS(DARWIN)
#include <mach/vm_param.h>
#endif
namespace TestWebKitAPI {
struct PackedPair {
PackedPtr<uint8_t> key { nullptr };
PackedPtr<uint8_t> value { nullptr };
};
TEST(WTF_Packed, StructSize)
{
EXPECT_EQ(alignof(PackedPair), 1U);
#if CPU(X86_64)
EXPECT_EQ(sizeof(PackedPair), 12U);
#endif
{
Packed<double> value;
value = 4.2;
EXPECT_EQ(value.get(), 4.2);
}
{
uint64_t originalValue = 0xff00ff00dd00dd00UL;
Packed<uint64_t> value;
value = originalValue;
EXPECT_EQ(value.get(), originalValue);
EXPECT_EQ(alignof(Packed<uint64_t>), 1U);
EXPECT_EQ(sizeof(Packed<uint64_t>), sizeof(uint64_t));
}
}
TEST(WTF_Packed, AssignAndGet)
{
{
PackedPtr<uint8_t> key { nullptr };
static_assert(OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) != 64);
uint8_t* candidates[] = {
0,
bitwise_cast<uint8_t*>(static_cast<uintptr_t>((1ULL << (OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) / 2)) - 1)),
bitwise_cast<uint8_t*>(static_cast<uintptr_t>((1ULL << (OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) - 1)) - 1)),
#if !CPU(X86_64) || OS(DARWIN) || OS(LINUX) || OS(WINDOWS)
// These OSes will never allocate user space addresses with
// bit 47 (i.e. OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) - 1) set.
bitwise_cast<uint8_t*>(static_cast<uintptr_t>((1ULL << OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH)) - 1)),
#else
bitwise_cast<uint8_t*>(static_cast<uintptr_t>(~((1ULL << (OS_CONSTANT(EFFECTIVE_ADDRESS_WIDTH) - 1)) - 1))), // min higher half
bitwise_cast<uint8_t*>(std::numeric_limits<uintptr_t>::max()), // max higher half
#endif
};
int count = sizeof(candidates) / sizeof(uint8_t*);
for (int i = 0; i < count; i++) {
key = candidates[i];
EXPECT_EQ(key.get(), candidates[i]);
}
}
}
TEST(WTF_Packed, PackedAlignedPtr)
{
{
PackedAlignedPtr<uint8_t, 256> key { nullptr };
EXPECT_LE(sizeof(key), 5U);
}
{
PackedAlignedPtr<uint8_t, 16> key { nullptr };
#if (OS(IOS) || OS(TVOS) || OS(WATCHOS)) && CPU(ARM64)
EXPECT_EQ(sizeof(key), 4U);
#else
EXPECT_LE(sizeof(key), 6U);
#endif
}
}
struct PackingTarget {
unsigned m_value { 0 };
};
TEST(WTF_Packed, HashMap)
{
Vector<PackingTarget> vector;
HashMap<PackedPtr<PackingTarget>, unsigned> map;
vector.reserveCapacity(10000);
for (unsigned i = 0; i < 10000; ++i)
vector.uncheckedAppend(PackingTarget { i });
for (auto& target : vector)
map.add(&target, target.m_value);
for (auto& target : vector) {
EXPECT_TRUE(map.contains(&target));
EXPECT_EQ(map.get(&target), target.m_value);
}
}
} // namespace TestWebKitAPI
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