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#include "tensorflow/core/lib/core/arena.h"
#include <gtest/gtest.h>
namespace tensorflow {
namespace core {
namespace {
// Write random data to allocated memory
static void TestMemory(void* mem, int size) {
// Check that we can memset the entire memory
memset(mem, 0xaa, size);
// Do some memory allocation to check that the arena doesn't mess up
// the internal memory allocator
char* tmp[100];
for (size_t i = 0; i < TF_ARRAYSIZE(tmp); i++) {
tmp[i] = new char[i * i + 1];
}
memset(mem, 0xcc, size);
// Free up the allocated memory;
for (size_t i = 0; i < TF_ARRAYSIZE(tmp); i++) {
delete[] tmp[i];
}
// Check that we can memset the entire memory
memset(mem, 0xee, size);
}
TEST(ArenaTest, TestBasicArena) {
Arena a(1024);
char* memory = a.Alloc(100);
ASSERT_NE(memory, nullptr);
TestMemory(memory, 100);
// Allocate again
memory = a.Alloc(100);
ASSERT_NE(memory, nullptr);
TestMemory(memory, 100);
}
TEST(ArenaTest, TestVariousArenaSizes) {
{
Arena a(1024);
// Allocate blocksize
char* memory = a.Alloc(1024);
ASSERT_NE(memory, nullptr);
TestMemory(memory, 1024);
// Allocate another blocksize
char* memory2 = a.Alloc(1024);
ASSERT_NE(memory2, nullptr);
TestMemory(memory2, 1024);
}
// Allocate an arena and allocate two blocks
// that together exceed a block size
{
Arena a(1024);
//
char* memory = a.Alloc(768);
ASSERT_NE(memory, nullptr);
TestMemory(memory, 768);
// Allocate another blocksize
char* memory2 = a.Alloc(768);
ASSERT_NE(memory2, nullptr);
TestMemory(memory2, 768);
}
// Allocate larger than a blocksize
{
Arena a(1024);
char* memory = a.Alloc(10240);
ASSERT_NE(memory, nullptr);
TestMemory(memory, 10240);
// Allocate another blocksize
char* memory2 = a.Alloc(1234);
ASSERT_NE(memory2, nullptr);
TestMemory(memory2, 1234);
}
}
} // namespace
} // namespace core
} // namespace tensorflow
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