From 7c96762f5f4cf5d9952fbf4093a4173f0ced989a Mon Sep 17 00:00:00 2001 From: mitaclaw <140017135+mitaclaw@users.noreply.github.com> Date: Sat, 28 Sep 2024 15:37:09 -0700 Subject: [PATCH] Simplify `std::copy` with `std::copy_n` + a surprise `std::memcpy` in VolumeVerifier.cpp. --- Source/Core/Core/FifoPlayer/FifoRecorder.cpp | 2 +- Source/Core/Core/HW/GBACore.cpp | 3 +-- Source/Core/Core/HW/WiimoteReal/IOWin.cpp | 2 +- Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp | 4 ++-- Source/Core/DiscIO/Blob.cpp | 3 +-- Source/Core/DiscIO/CompressedBlob.cpp | 2 +- Source/Core/DiscIO/DirectoryBlob.cpp | 3 +-- Source/Core/DiscIO/LaggedFibonacciGenerator.cpp | 4 ++-- Source/Core/DiscIO/TGCBlob.cpp | 4 ++-- Source/Core/DiscIO/VolumeVerifier.cpp | 3 +-- Source/Core/DiscIO/WIABlob.cpp | 2 +- Source/Core/UpdaterCommon/UpdaterCommon.cpp | 3 ++- 12 files changed, 16 insertions(+), 19 deletions(-) diff --git a/Source/Core/Core/FifoPlayer/FifoRecorder.cpp b/Source/Core/Core/FifoPlayer/FifoRecorder.cpp index c354a5fdf7..fa8f57ca94 100644 --- a/Source/Core/Core/FifoPlayer/FifoRecorder.cpp +++ b/Source/Core/Core/FifoPlayer/FifoRecorder.cpp @@ -382,7 +382,7 @@ void FifoRecorder::UseMemory(u32 address, u32 size, MemoryUpdate::Type type, boo memUpdate.fifoPosition = (u32)(m_FifoData.size()); memUpdate.type = type; memUpdate.data.resize(size); - std::copy(newData, newData + size, memUpdate.data.begin()); + std::copy_n(newData, size, memUpdate.data.begin()); m_CurrentFrame.memoryUpdates.push_back(std::move(memUpdate)); } diff --git a/Source/Core/Core/HW/GBACore.cpp b/Source/Core/Core/HW/GBACore.cpp index 6bb39776a3..9e81914524 100644 --- a/Source/Core/Core/HW/GBACore.cpp +++ b/Source/Core/Core/HW/GBACore.cpp @@ -543,8 +543,7 @@ void Core::RunCommand(Command& command) { int recvd = GBASIOJOYSendCommand( &m_sio_driver, static_cast(command.buffer[0]), &command.buffer[1]); - std::copy(command.buffer.begin() + 1, command.buffer.begin() + 1 + recvd, - std::back_inserter(m_response)); + std::copy_n(command.buffer.begin() + 1, recvd, std::back_inserter(m_response)); } if (m_thread && !m_response_ready) diff --git a/Source/Core/Core/HW/WiimoteReal/IOWin.cpp b/Source/Core/Core/HW/WiimoteReal/IOWin.cpp index f931bb10a3..4cc4122dd5 100644 --- a/Source/Core/Core/HW/WiimoteReal/IOWin.cpp +++ b/Source/Core/Core/HW/WiimoteReal/IOWin.cpp @@ -275,7 +275,7 @@ int IOWritePerWriteFile(HANDLE& dev_handle, OVERLAPPED& hid_overlap_write, // This is currently needed by the Toshiba Bluetooth Stack. if ((write_method == WWM_WRITE_FILE_LARGEST_REPORT_SIZE) && (MAX_PAYLOAD > len)) { - std::copy(buf, buf + len, resized_buffer); + std::copy_n(buf, len, resized_buffer); std::fill(resized_buffer + len, resized_buffer + MAX_PAYLOAD, 0); write_buffer = resized_buffer + 1; bytes_to_write = MAX_PAYLOAD - 1; diff --git a/Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp b/Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp index b0be6bc249..2c822203e7 100644 --- a/Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp +++ b/Source/Core/Core/IOS/USB/Bluetooth/BTEmu.cpp @@ -413,7 +413,7 @@ void BluetoothEmuDevice::ACLPool::Store(const u8* data, const u16 size, const u1 m_queue.push_back(Packet()); auto& packet = m_queue.back(); - std::copy(data, data + size, packet.data); + std::copy_n(data, size, packet.data); packet.size = size; packet.conn_handle = conn_handle; } @@ -438,7 +438,7 @@ void BluetoothEmuDevice::ACLPool::WriteToEndpoint(const USB::V0BulkMessage& endp header->length = size; // Write the packet to the buffer - std::copy(data, data + size, (u8*)header + sizeof(hci_acldata_hdr_t)); + std::copy_n(data, size, (u8*)header + sizeof(hci_acldata_hdr_t)); m_queue.pop_front(); diff --git a/Source/Core/DiscIO/Blob.cpp b/Source/Core/DiscIO/Blob.cpp index 1109b00a1b..4d6b356473 100644 --- a/Source/Core/DiscIO/Blob.cpp +++ b/Source/Core/DiscIO/Blob.cpp @@ -153,8 +153,7 @@ bool SectorReader::Read(u64 offset, u64 size, u8* out_ptr) u32 can_read = m_block_size * cache->num_blocks - read_offset; u32 was_read = static_cast(std::min(can_read, remain)); - std::copy(cache->data.begin() + read_offset, cache->data.begin() + read_offset + was_read, - out_ptr); + std::copy_n(cache->data.begin() + read_offset, was_read, out_ptr); offset += was_read; out_ptr += was_read; diff --git a/Source/Core/DiscIO/CompressedBlob.cpp b/Source/Core/DiscIO/CompressedBlob.cpp index ce1e210b77..fccb3928d1 100644 --- a/Source/Core/DiscIO/CompressedBlob.cpp +++ b/Source/Core/DiscIO/CompressedBlob.cpp @@ -130,7 +130,7 @@ bool CompressedBlobReader::GetBlock(u64 block_num, u8* out_ptr) if (uncompressed) { - std::copy(m_zlib_buffer.begin(), m_zlib_buffer.begin() + comp_block_size, out_ptr); + std::copy_n(m_zlib_buffer.begin(), comp_block_size, out_ptr); } else { diff --git a/Source/Core/DiscIO/DirectoryBlob.cpp b/Source/Core/DiscIO/DirectoryBlob.cpp index 7cd7e12def..8129684575 100644 --- a/Source/Core/DiscIO/DirectoryBlob.cpp +++ b/Source/Core/DiscIO/DirectoryBlob.cpp @@ -107,8 +107,7 @@ bool DiscContent::Read(u64* offset, u64* length, u8** buffer, DirectoryBlobReade else if (std::holds_alternative(m_content_source)) { const auto& content = std::get(m_content_source); - std::copy(content->begin() + offset_in_content, - content->begin() + offset_in_content + bytes_to_read, *buffer); + std::copy_n(content->begin() + offset_in_content, bytes_to_read, *buffer); } else if (std::holds_alternative(m_content_source)) { diff --git a/Source/Core/DiscIO/LaggedFibonacciGenerator.cpp b/Source/Core/DiscIO/LaggedFibonacciGenerator.cpp index f8f496a8a3..ba2f2ea629 100644 --- a/Source/Core/DiscIO/LaggedFibonacciGenerator.cpp +++ b/Source/Core/DiscIO/LaggedFibonacciGenerator.cpp @@ -78,8 +78,8 @@ bool LaggedFibonacciGenerator::GetSeed(const u32* data, size_t size, size_t data const size_t data_offset_mod_k = data_offset % LFG_K; const size_t data_offset_div_k = data_offset / LFG_K; - std::copy(data, data + LFG_K - data_offset_mod_k, lfg->m_buffer.data() + data_offset_mod_k); - std::copy(data + LFG_K - data_offset_mod_k, data + LFG_K, lfg->m_buffer.data()); + std::copy_n(data, LFG_K - data_offset_mod_k, lfg->m_buffer.data() + data_offset_mod_k); + std::copy_n(data + LFG_K - data_offset_mod_k, data_offset_mod_k, lfg->m_buffer.data()); lfg->Backward(0, data_offset_mod_k); diff --git a/Source/Core/DiscIO/TGCBlob.cpp b/Source/Core/DiscIO/TGCBlob.cpp index 94ad394861..6478ea40da 100644 --- a/Source/Core/DiscIO/TGCBlob.cpp +++ b/Source/Core/DiscIO/TGCBlob.cpp @@ -28,8 +28,8 @@ void Replace(u64 offset, u64 size, u8* out_ptr, u64 replace_offset, u64 replace_ if (replace_end > replace_start) { - std::copy(replace_ptr + (replace_start - replace_offset), - replace_ptr + (replace_end - replace_offset), out_ptr + (replace_start - offset)); + std::copy_n(replace_ptr + (replace_start - replace_offset), replace_end - replace_start, + out_ptr + (replace_start - offset)); } } diff --git a/Source/Core/DiscIO/VolumeVerifier.cpp b/Source/Core/DiscIO/VolumeVerifier.cpp index 5a4a9c6856..5cb9fa3e59 100644 --- a/Source/Core/DiscIO/VolumeVerifier.cpp +++ b/Source/Core/DiscIO/VolumeVerifier.cpp @@ -1301,8 +1301,7 @@ void VolumeVerifier::Finish() { m_result.hashes.crc32 = std::vector(4); const u32 crc32_be = Common::swap32(m_crc32_context); - const u8* crc32_be_ptr = reinterpret_cast(&crc32_be); - std::copy(crc32_be_ptr, crc32_be_ptr + 4, m_result.hashes.crc32.begin()); + std::memcpy(m_result.hashes.crc32.data(), &crc32_be, 4); } if (m_hashes_to_calculate.md5) diff --git a/Source/Core/DiscIO/WIABlob.cpp b/Source/Core/DiscIO/WIABlob.cpp index e96a355cc6..c0f3930899 100644 --- a/Source/Core/DiscIO/WIABlob.cpp +++ b/Source/Core/DiscIO/WIABlob.cpp @@ -1635,7 +1635,7 @@ WIARVZFileReader::ProcessAndCompress(CompressThreadState* state, CompressPa const size_t size = state->compressor->GetSize(); entry.main_data.resize(size); - std::copy(data, data + size, entry.main_data.data()); + std::copy_n(data, size, entry.main_data.data()); if (compressed_exception_lists) entry.exception_lists.clear(); diff --git a/Source/Core/UpdaterCommon/UpdaterCommon.cpp b/Source/Core/UpdaterCommon/UpdaterCommon.cpp index 9dd470e067..3032382bff 100644 --- a/Source/Core/UpdaterCommon/UpdaterCommon.cpp +++ b/Source/Core/UpdaterCommon/UpdaterCommon.cpp @@ -3,6 +3,7 @@ #include "UpdaterCommon/UpdaterCommon.h" +#include #include #include #include @@ -150,7 +151,7 @@ Manifest::Hash ComputeHash(const std::string& contents) false); Manifest::Hash out; - std::copy(full.begin(), full.begin() + 16, out.begin()); + std::copy_n(full.begin(), 16, out.begin()); return out; }