GrMemoryPoolTest.cpp File Reference

#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTDArray.h"
#include "src/base/SkRandom.h"
#include "src/gpu/ganesh/GrMemoryPool.h"
#include "tests/Test.h"
#include <array>
#include <cstddef>
#include <cstdint>
#include <memory>

Go to the source code of this file.

Classes
class	A
class	B
class	C
class	D
class	E
class	Rec
class	AutoPoolReleaser

Functions
	DEF_TEST (GrMemoryPool, reporter)
	DEF_TEST (GrMemoryPoolAPI, reporter)

Function Documentation

DEF_TEST() [1/2]

DEF_TEST	(	GrMemoryPool	,
		reporter
	)

Definition at line 181 of file GrMemoryPoolTest.cpp.

                                 {
    // prealloc and min alloc sizes for the pool
    static const size_t gSizes[][2] = {
        {0, 0},
        {10 * sizeof(A), 20 * sizeof(A)},
        {100 * sizeof(A), 100 * sizeof(A)},
        {500 * sizeof(A), 500 * sizeof(A)},
        {10000 * sizeof(A), 0},
        {1, 100 * sizeof(A)},
    };
 
    // different percentages of creation vs deletion
    static const float gCreateFraction[] = {1.f, .95f, 0.75f, .5f};
    // number of create/destroys per test
    static const int kNumIters = 20000;
    // check that all the values stored in A objects are correct after this
    // number of iterations
    static const int kCheckPeriod = 500;
 
    SkRandom r;
    for (size_t s = 0; s < std::size(gSizes); ++s) {
        A::SetAllocator(gSizes[s][0], gSizes[s][1]);
        A::ValidatePool();
        for (size_t c = 0; c < std::size(gCreateFraction); ++c) {
            SkTDArray<Rec> instanceRecs;
            for (int i = 0; i < kNumIters; ++i) {
                float createOrDestroy = r.nextUScalar1();
                if (createOrDestroy < gCreateFraction[c] ||
                    0 == instanceRecs.size()) {
                    Rec* rec = instanceRecs.append();
                    rec->fInstance = A::Create(&r);
                    rec->fValue = static_cast<int>(r.nextU());
                    rec->fInstance->setValues(rec->fValue);
                } else {
                    int d = r.nextRangeU(0, instanceRecs.size() - 1);
                    Rec& rec = instanceRecs[d];
                    REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
                    delete rec.fInstance;
                    instanceRecs.removeShuffle(d);
                }
                if (0 == i % kCheckPeriod) {
                    A::ValidatePool();
                    for (Rec& rec : instanceRecs) {
                        REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
                    }
                }
            }
            for (Rec& rec : instanceRecs) {
                REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
                delete rec.fInstance;
            }
        }
    }
}

DEF_TEST() [2/2]

DEF_TEST	(	GrMemoryPoolAPI	,
		reporter
	)

Definition at line 255 of file GrMemoryPoolTest.cpp.

                                    {
    constexpr size_t kSmallestMinAllocSize = GrMemoryPool::kMinAllocationSize;
 
    // Allocates memory until pool adds a new block (pool->size() changes).
    auto allocateMemory = [](GrMemoryPool& pool, AutoPoolReleaser& r) {
        size_t origPoolSize = pool.size();
        while (pool.size() == origPoolSize) {
            r.add(pool.allocate(31));
        }
    };
 
    // Effective prealloc space capacity is >= kMinAllocationSize.
    {
        auto pool = GrMemoryPool::Make(0, 0);
        REPORTER_ASSERT(reporter, pool->preallocSize() == kSmallestMinAllocSize);
    }
 
    // Effective block size capacity >= kMinAllocationSize.
    {
        auto pool = GrMemoryPool::Make(kSmallestMinAllocSize, kSmallestMinAllocSize / 2);
        AutoPoolReleaser r(*pool);
 
        allocateMemory(*pool, r);
        REPORTER_ASSERT(reporter, pool->size() == kSmallestMinAllocSize);
    }
 
    // Pool allocates exactly preallocSize on creation.
    {
        constexpr size_t kPreallocSize = kSmallestMinAllocSize * 5;
        auto pool = GrMemoryPool::Make(kPreallocSize, 0);
        REPORTER_ASSERT(reporter, pool->preallocSize() == kPreallocSize);
    }
 
    // Pool allocates exactly minAllocSize when it expands.
    {
        constexpr size_t kMinAllocSize = kSmallestMinAllocSize * 7;
        auto pool = GrMemoryPool::Make(0, kMinAllocSize);
        AutoPoolReleaser r(*pool);
        REPORTER_ASSERT(reporter, pool->size() == 0);
 
        allocateMemory(*pool, r);
        REPORTER_ASSERT(reporter, pool->size() == kMinAllocSize);
 
        allocateMemory(*pool, r);
        REPORTER_ASSERT(reporter, pool->size() == 2 * kMinAllocSize);
    }
 
    // When asked to allocate amount > minAllocSize, pool allocates larger block
    // to accommodate all internal structures.
    {
        constexpr size_t kMinAllocSize = kSmallestMinAllocSize * 2;
        auto pool = GrMemoryPool::Make(kSmallestMinAllocSize, kMinAllocSize);
        AutoPoolReleaser r(*pool);
 
        REPORTER_ASSERT(reporter, pool->size() == 0);
 
        constexpr size_t hugeSize = 10 * kMinAllocSize;
        r.add(pool->allocate(hugeSize));
        REPORTER_ASSERT(reporter, pool->size() > hugeSize);
 
        // Block size allocated to accommodate huge request doesn't include any extra
        // space, so next allocation request allocates a new block.
        size_t hugeBlockSize = pool->size();
        r.add(pool->allocate(0));
        REPORTER_ASSERT(reporter, pool->size() == hugeBlockSize + kMinAllocSize);
    }
}