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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <gtest/gtest.h>
#include <utils/LinearAllocator.h>
using namespace android;
using namespace android::uirenderer;
struct SimplePair {
int one = 1;
int two = 2;
};
class SignalingDtor {
public:
SignalingDtor() {
mDestroyed = nullptr;
}
SignalingDtor(bool* destroyedSignal) {
mDestroyed = destroyedSignal;
*mDestroyed = false;
}
virtual ~SignalingDtor() {
if (mDestroyed) {
*mDestroyed = true;
}
}
void setSignal(bool* destroyedSignal) {
mDestroyed = destroyedSignal;
}
private:
bool* mDestroyed;
};
TEST(LinearAllocator, alloc) {
LinearAllocator la;
EXPECT_EQ(0u, la.usedSize());
la.alloc(64);
// There's some internal tracking as well as padding
// so the usedSize isn't strictly defined
EXPECT_LE(64u, la.usedSize());
EXPECT_GT(80u, la.usedSize());
auto pair = la.alloc<SimplePair>();
EXPECT_LE(64u + sizeof(SimplePair), la.usedSize());
EXPECT_GT(80u + sizeof(SimplePair), la.usedSize());
EXPECT_EQ(1, pair->one);
EXPECT_EQ(2, pair->two);
}
TEST(LinearAllocator, dtor) {
bool destroyed[10];
{
LinearAllocator la;
for (int i = 0; i < 5; i++) {
la.alloc<SignalingDtor>()->setSignal(destroyed + i);
la.alloc<SimplePair>();
}
la.alloc(100);
for (int i = 0; i < 5; i++) {
auto sd = new (la) SignalingDtor(destroyed + 5 + i);
la.autoDestroy(sd);
new (la) SimplePair();
}
la.alloc(100);
for (int i = 0; i < 10; i++) {
EXPECT_FALSE(destroyed[i]);
}
}
for (int i = 0; i < 10; i++) {
EXPECT_TRUE(destroyed[i]);
}
}
TEST(LinearAllocator, rewind) {
bool destroyed;
{
LinearAllocator la;
auto addr = la.alloc(100);
EXPECT_LE(100u, la.usedSize());
la.rewindIfLastAlloc(addr, 100);
EXPECT_GT(16u, la.usedSize());
size_t emptySize = la.usedSize();
auto sigdtor = la.alloc<SignalingDtor>();
sigdtor->setSignal(&destroyed);
EXPECT_FALSE(destroyed);
EXPECT_LE(emptySize, la.usedSize());
la.rewindIfLastAlloc(sigdtor);
EXPECT_TRUE(destroyed);
EXPECT_EQ(emptySize, la.usedSize());
destroyed = false;
}
// Checking for a double-destroy case
EXPECT_EQ(destroyed, false);
}
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