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/*
* Copyright 2010, Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
// Tests for the arena.
#include <algorithm>
#include <vector>
#include "gtest/gtest.h"
#include "core/cross/gpu2d/arena.h"
namespace o3d {
namespace gpu2d {
namespace {
// A base allocator for the Arena which tracks the regions
// which have been allocated.
class TrackedMallocAllocator : public Arena::Allocator {
public:
TrackedMallocAllocator() {
}
virtual void* Allocate(size_t size) {
void* res = ::malloc(size);
allocated_regions_.push_back(res);
return res;
}
virtual void Free(void* ptr) {
std::vector<void*>::iterator slot = std::find(allocated_regions_.begin(),
allocated_regions_.end(),
ptr);
ASSERT_TRUE(slot != allocated_regions_.end());
allocated_regions_.erase(slot);
::free(ptr);
}
bool IsEmpty() {
return NumRegions() == 0;
}
int NumRegions() {
return allocated_regions_.size();
}
private:
std::vector<void*> allocated_regions_;
DISALLOW_COPY_AND_ASSIGN(TrackedMallocAllocator);
};
// A couple of simple structs to allocate.
struct TestClass1 {
TestClass1()
: x(0), y(0), z(0), w(1) {
}
float x, y, z, w;
};
struct TestClass2 {
TestClass2()
: a(1), b(2), c(3), d(4) {
}
float a, b, c, d;
};
} // anonymous namespace
class ArenaTest : public testing::Test {
};
// Make sure the arena can successfully allocate from more than one
// region.
TEST_F(ArenaTest, CanAllocateFromMoreThanOneRegion) {
TrackedMallocAllocator base_allocator;
Arena arena(&base_allocator);
for (int i = 0; i < 10000; i++) {
arena.Alloc<TestClass1>();
}
EXPECT_GT(base_allocator.NumRegions(), 1);
}
// Make sure the arena frees all allocated regions during destruction.
TEST_F(ArenaTest, FreesAllAllocatedRegions) {
TrackedMallocAllocator* base_allocator = new TrackedMallocAllocator();
Arena* arena = new Arena(base_allocator);
for (int i = 0; i < 3; i++) {
arena->Alloc<TestClass1>();
}
EXPECT_GT(base_allocator->NumRegions(), 0);
delete arena;
EXPECT_TRUE(base_allocator->IsEmpty());
delete base_allocator;
}
// Make sure the arena runs constructors of the objects allocated within.
TEST_F(ArenaTest, RunsConstructors) {
Arena arena;
for (int i = 0; i < 10000; i++) {
TestClass1* tc1 = arena.Alloc<TestClass1>();
EXPECT_EQ(0, tc1->x);
EXPECT_EQ(0, tc1->y);
EXPECT_EQ(0, tc1->z);
EXPECT_EQ(1, tc1->w);
TestClass2* tc2 = arena.Alloc<TestClass2>();
EXPECT_EQ(1, tc2->a);
EXPECT_EQ(2, tc2->b);
EXPECT_EQ(3, tc2->c);
EXPECT_EQ(4, tc2->d);
}
}
} // namespace gpu2d
} // namespace o3d
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