зеркало из https://github.com/mozilla/moz-skia.git
84 строки
2.2 KiB
C++
84 строки
2.2 KiB
C++
/*
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* Copyright 2014 Google, Inc
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkSmallAllocator.h"
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#include "SkTypes.h"
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#include "Test.h"
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class CountingClass {
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public:
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CountingClass() {
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kCount++;
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}
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~CountingClass() {
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kCount--;
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}
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static int GetCount() { return kCount; }
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private:
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static int kCount;
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};
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int CountingClass::kCount;
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template<uint32_t kMaxObjects, size_t kBytes> void test_allocator(skiatest::Reporter* reporter) {
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{
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SkSmallAllocator<kMaxObjects, kBytes> alloc;
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for (uint32_t i = 0; i < kMaxObjects; ++i) {
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CountingClass* c = alloc.template createT<CountingClass>();
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REPORTER_ASSERT(reporter, c != NULL);
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REPORTER_ASSERT(reporter, CountingClass::GetCount() == static_cast<int>(i+1));
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}
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}
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REPORTER_ASSERT(reporter, CountingClass::GetCount() == 0);
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}
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// Tests that ensure that the destructor is called, whether the objects
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// were created in fStorage or on the heap.
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DEF_TEST(SmallAllocator_destructor, reporter) {
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// Four times as many bytes as objects will never require any heap
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// allocations (since SkAlign4(sizeof(CountingClass)) == 4 and the allocator
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// will stop once it reaches kMaxObjects).
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test_allocator<5, 20>(reporter);
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test_allocator<10, 40>(reporter);
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test_allocator<20, 80>(reporter);
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#ifndef SK_DEBUG
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// Allowing less bytes than objects means some will be allocated on the
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// heap. Don't run these in debug where we assert.
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test_allocator<50, 20>(reporter);
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test_allocator<100, 20>(reporter);
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#endif
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}
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class Dummy {
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};
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class DummyContainer {
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public:
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explicit DummyContainer(Dummy* d)
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:fDummy(d)
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{}
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Dummy* getDummy() const { return fDummy; }
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private:
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Dummy* fDummy;
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};
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// Test that using a createT with a constructor taking a pointer as a
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// parameter works as expected.
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DEF_TEST(SmallAllocator_pointer, reporter) {
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SkSmallAllocator<1, 8> alloc;
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Dummy d;
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DummyContainer* container = alloc.createT<DummyContainer>(&d);
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REPORTER_ASSERT(reporter, container != NULL);
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REPORTER_ASSERT(reporter, container->getDummy() == &d);
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}
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