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#include "tensorflow/core/framework/allocator.h"
#include <algorithm>
#include "tensorflow/core/platform/logging.h"
#include <gtest/gtest.h>
namespace tensorflow {
TEST(CPUAllocatorTest, Simple) {
Allocator* a = cpu_allocator();
std::vector<void*> ptrs;
for (int s = 1; s < 1024; s++) {
void* raw = a->AllocateRaw(1, s);
ptrs.push_back(raw);
}
std::sort(ptrs.begin(), ptrs.end());
for (size_t i = 0; i < ptrs.size(); i++) {
if (i > 0) {
CHECK_NE(ptrs[i], ptrs[i - 1]); // No dups
}
a->DeallocateRaw(ptrs[i]);
}
float* t1 = a->Allocate<float>(1024);
double* t2 = a->Allocate<double>(1048576);
a->Deallocate(t1);
a->Deallocate(t2);
}
// Define a struct that we will use to observe behavior in the unit tests
struct TestStruct {
int x; // not used just want to make sure sizeof(TestStruct) > 1
};
TEST(CPUAllocatorTest, CheckStructSize) { CHECK_GT(sizeof(TestStruct), 1); }
TEST(CPUAllocatorTest, AllocateOverflowMaxSizeT) {
Allocator* a = cpu_allocator();
// The maximum size_t value will definitely overflow.
size_t count_to_allocate = std::numeric_limits<size_t>::max();
TestStruct* const test_pointer = a->Allocate<TestStruct>(count_to_allocate);
CHECK_EQ(test_pointer, reinterpret_cast<TestStruct*>(NULL));
}
TEST(CPUAllocatorTest, AllocateOverflowSmallest) {
Allocator* a = cpu_allocator();
// count_to_allocate is the smallest count that will cause overflow.
const size_t count_to_allocate =
(std::numeric_limits<size_t>::max() / sizeof(TestStruct)) + 1;
TestStruct* const test_pointer = a->Allocate<TestStruct>(count_to_allocate);
CHECK_EQ(test_pointer, reinterpret_cast<TestStruct*>(NULL));
}
TEST(CPUAllocatorTest, Sizes) {
Allocator* a = cpu_allocator();
EXPECT_EQ(false, a->TracksAllocationSizes());
}
} // namespace tensorflow
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