mirrors/serenity
1
0
Fork 0
mirror of https://github.com/SerenityOS/serenity.git synced 2025-01-24 10:22:05 -05:00
Code Issues Projects Releases Packages Wiki Activity

Kernel: Avoid some un-necessary copies coming from range based for loops

Browse source 
- The irq_controller was getting add_ref/released needlessly during enumeration.

- Used ranges were also getting needlessly copied.
This commit is contained in:
Brian Gianforcaro 2021-02-15 03:56:39 -08:00 • committed by Andreas Kling
parent a5f879ea8c
commit 7482cb6531
2 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Kernel/Interrupts/InterruptManagement.cpp
View file

@ -117,7 +117,7 @@ RefPtr<IRQController> InterruptManagement::get_responsible_irq_controller(u8 int
if (m_interrupt_controllers.size() == 1 && m_interrupt_controllers[0]->type() == IRQControllerType::i8259) {
return m_interrupt_controllers[0];
}
for (auto irq_controller : m_interrupt_controllers) {
for (auto& irq_controller : m_interrupt_controllers) {
if (irq_controller->gsi_base() <= interrupt_vector)
if (!irq_controller->is_hard_disabled())
return irq_controller;

4
Kernel/VM/MemoryManager.cpp
View file

@ -195,7 +195,7 @@ void MemoryManager::parse_memory_map()
auto* mmap_begin = reinterpret_cast<multiboot_memory_map_t*>(low_physical_to_virtual(multiboot_info_ptr->mmap_addr));
auto* mmap_end = reinterpret_cast<multiboot_memory_map_t*>(low_physical_to_virtual(multiboot_info_ptr->mmap_addr) + multiboot_info_ptr->mmap_length);
for (auto used_range : m_used_memory_ranges) {
for (auto& used_range : m_used_memory_ranges) {
klog() << "MM: " << used_range;
}
@ -255,7 +255,7 @@ void MemoryManager::parse_memory_map()
// Skip used memory ranges.
bool should_skip = false;
for (auto used_range : m_used_memory_ranges) {
for (auto& used_range : m_used_memory_ranges) {
if (addr.get() >= used_range.start.get() && addr.get() <= used_range.end.get()) {
should_skip = true;
break;