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Kernel: Use StringView instead of String in RingBuffer's constructor

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This String was being copied into a KString internally anyways.
This commit is contained in:
Idan Horowitz 2022-01-12 23:57:45 +02:00 • committed by Brian Gianforcaro
parent 792b8ca13c
commit 618f123463
4 changed files with 7 additions and 8 deletions
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4
Kernel/Bus/VirtIO/Console.cpp
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@ -123,8 +123,8 @@ void Console::handle_queue_update(u16 queue_index)
void Console::setup_multiport()
{
m_control_receive_buffer = make<Memory::RingBuffer>("VirtIOConsole control receive queue", CONTROL_BUFFER_SIZE);
m_control_transmit_buffer = make<Memory::RingBuffer>("VirtIOConsole control transmit queue", CONTROL_BUFFER_SIZE);
m_control_receive_buffer = make<Memory::RingBuffer>("VirtIOConsole control receive queue"sv, CONTROL_BUFFER_SIZE);
m_control_transmit_buffer = make<Memory::RingBuffer>("VirtIOConsole control transmit queue"sv, CONTROL_BUFFER_SIZE);
auto& queue = get_queue(CONTROL_RECEIVEQ);
SpinlockLocker queue_lock(queue.lock());

4
Kernel/Bus/VirtIO/ConsolePort.cpp
View file

@ -17,8 +17,8 @@ ConsolePort::ConsolePort(unsigned port, VirtIO::Console& console)
, m_console(console)
, m_port(port)
{
m_receive_buffer = make<Memory::RingBuffer>("VirtIO::ConsolePort Receive", RINGBUFFER_SIZE);
m_transmit_buffer = make<Memory::RingBuffer>("VirtIO::ConsolePort Transmit", RINGBUFFER_SIZE);
m_receive_buffer = make<Memory::RingBuffer>("VirtIO::ConsolePort Receive"sv, RINGBUFFER_SIZE);
m_transmit_buffer = make<Memory::RingBuffer>("VirtIO::ConsolePort Transmit"sv, RINGBUFFER_SIZE);
m_receive_queue = m_port == 0 ? 0 : m_port * 2 + 2;
m_transmit_queue = m_port == 0 ? 1 : m_port * 2 + 3;
}

4
Kernel/Memory/RingBuffer.cpp
View file

@ -10,8 +10,8 @@
namespace Kernel::Memory {
RingBuffer::RingBuffer(String region_name, size_t capacity)
: m_region(MM.allocate_contiguous_kernel_region(page_round_up(capacity).release_value_but_fixme_should_propagate_errors(), move(region_name), Region::Access::Read | Region::Access::Write).release_value())
RingBuffer::RingBuffer(StringView region_name, size_t capacity)
: m_region(MM.allocate_contiguous_kernel_region(page_round_up(capacity).release_value_but_fixme_should_propagate_errors(), region_name, Region::Access::Read | Region::Access::Write).release_value())
, m_capacity_in_bytes(capacity)
{
}

3
Kernel/Memory/RingBuffer.h
View file

@ -6,7 +6,6 @@
#pragma once
#include <AK/String.h>
#include <Kernel/PhysicalAddress.h>
#include <Kernel/UserOrKernelBuffer.h>
@ -14,7 +13,7 @@ namespace Kernel::Memory {
class RingBuffer {
public:
RingBuffer(String region_name, size_t capacity);
RingBuffer(StringView region_name, size_t capacity);
bool has_space() const { return m_num_used_bytes < m_capacity_in_bytes; }
bool copy_data_in(const UserOrKernelBuffer& buffer, size_t offset, size_t length, PhysicalAddress& start_of_copied_data, size_t& bytes_copied);