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/*
* Copyright (c) 2021-2022 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <glog/logging.h>
#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <hicn/transport/core/content_object.h>
#include <hicn/transport/core/interest.h>
#define ALLOCATION_CHECKS
#include <hicn/transport/core/global_object_pool.h>
#undef ALLOCATION_CHECKS
#include <hicn/transport/utils/chrono_typedefs.h>
#include <hicn/transport/utils/event_thread.h>
namespace transport {
namespace core {
class PacketAllocatorTest : public ::testing::Test {
protected:
static inline const std::size_t default_size = 2048;
static inline const std::size_t default_n_buffer = 1024;
static inline const std::size_t counter = 1024;
static inline const std::size_t total_packets = 1024 * counter;
// Get fixed block allocator_ of 1024 buffers of size 2048 bytes
PacketAllocatorTest() : allocator_(PacketManager<>::getInstance()) {
// You can do set-up work for each test here.
}
virtual ~PacketAllocatorTest() {
// You can do clean-up work that doesn't throw exceptions here.
}
// If the constructor and destructor are not enough for setting up
// and cleaning up each test, you can define the following methods:
virtual void SetUp() {}
virtual void TearDown() {}
static bool pointerIsAligned(const void *pointer, size_t byte_count) {
return uintptr_t(pointer) % byte_count == 0;
}
template <typename T, typename... Args>
void allocationTest(Args &&...args) {
// Create packet
auto packet = allocator_.getPacket<T>(std::forward<Args>(args)...);
// Check boundaries
LOG(INFO) << "packet size: " << sizeof(*packet) + sizeof(packet)
<< std::endl;
EXPECT_LE(sizeof(*packet) + sizeof(packet) + sizeof(std::max_align_t),
sizeof(PacketManager<>::PacketStorage::packet_and_shared_ptr));
}
PacketManager<> &allocator_;
};
TEST_F(PacketAllocatorTest, ContentObjectAllocation) {
allocationTest<core::ContentObject>(HICN_PACKET_FORMAT_IPV4_TCP);
}
TEST_F(PacketAllocatorTest, InterestAllocation) {
allocationTest<core::Interest>(HICN_PACKET_FORMAT_IPV4_TCP);
}
// TEST_F(PacketAllocatorTest, MemBufAllocation) {
// allocationTest<::utils::MemBuf>();
// }
TEST_F(PacketAllocatorTest, CheckAllocationIsCorrect) {
// Create packet
auto packet =
allocator_.getPacket<core::ContentObject>(HICN_PACKET_FORMAT_IPV4_TCP);
// Address of actual buffer
uint8_t *buffer_address = packet->writableData();
// Address of packet
uint8_t *packet_address = reinterpret_cast<uint8_t *>(packet.get());
uint8_t *start_address =
buffer_address -
sizeof(PacketManager<>::PacketStorage::packet_and_shared_ptr);
// Check memory was allocated on correct positions
EXPECT_TRUE(pointerIsAligned(start_address, alignof(std::max_align_t)));
EXPECT_TRUE(packet_address > start_address &&
packet_address < buffer_address);
EXPECT_TRUE(pointerIsAligned(buffer_address, alignof(std::max_align_t)));
EXPECT_THAT(std::size_t(buffer_address - start_address),
testing::Eq(sizeof(
PacketManager<>::PacketStorage::packet_and_shared_ptr)));
}
TEST_F(PacketAllocatorTest, CheckAllocationSpeed) {
// Check time needed to allocate 1 million packeauto &packet_manager =
auto &packet_manager = core::PacketManager<>::getInstance();
// Send 1 million packets
std::array<utils::MemBuf::Ptr, counter> packets;
auto t0 = utils::SteadyTime::now();
std::size_t sum = 0;
for (std::size_t j = 0; j < counter; j++) {
for (std::size_t i = 0; i < counter; i++) {
packets[i] = packet_manager.getMemBuf();
sum++;
}
}
auto t1 = utils::SteadyTime::now();
auto delta = utils::SteadyTime::getDurationUs(t0, t1);
auto rate = double(sum) * 1000000.0 / double(delta.count());
LOG(INFO) << "rate: " << rate << " packets/s";
}
} // namespace core
} // namespace transport
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