static void test_memory_pool(skiatest::Reporter* reporter) {
// 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 < SK_ARRAY_COUNT(gSizes); ++s) {
A::SetAllocator(gSizes[s][0], gSizes[s][1]);
for (size_t c = 0; c < SK_ARRAY_COUNT(gCreateFraction); ++c) {
SkTDArray<Rec> instanceRecs;
for (int i = 0; i < kNumIters; ++i) {
float createOrDestroy = r.nextUScalar1();
if (createOrDestroy < gCreateFraction[c] ||
0 == instanceRecs.count()) {
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.count() - 1);
Rec& rec = instanceRecs[d];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
delete rec.fInstance;
instanceRecs.removeShuffle(d);
}
if (0 == i % kCheckPeriod) {
for (int r = 0; r < instanceRecs.count(); ++r) {
Rec& rec = instanceRecs[r];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
}
}
}
for (int i = 0; i < instanceRecs.count(); ++i) {
Rec& rec = instanceRecs[i];
REPORTER_ASSERT(reporter, rec.fInstance->checkValues(rec.fValue));
delete rec.fInstance;
}
#ifdef SK_ENABLE_INST_COUNT
REPORTER_ASSERT(reporter, !A::GetInstanceCount());
#endif
}
}
}
