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Kernel: Store AddressSpace memory regions in an IntrusiveRedBlackTree

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This means we never need to allocate when inserting/removing regions
from the address space.
This commit is contained in:
Andreas Kling 2022-04-02 01:28:01 +02:00
parent 7381474835
commit 2617adac52
7 changed files with 99 additions and 81 deletions
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6
Kernel/Syscalls/fork.cpp
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@ -109,12 +109,12 @@ ErrorOr<FlatPtr> Process::sys$fork(RegisterState& regs)
{
SpinlockLocker lock(address_space().get_lock());
for (auto& region : address_space().regions()) {
dbgln_if(FORK_DEBUG, "fork: cloning Region({}) '{}' @ {}", region, region->name(), region->vaddr());
auto region_clone = TRY(region->try_clone());
dbgln_if(FORK_DEBUG, "fork: cloning Region({}) '{}' @ {}", region, region.name(), region.vaddr());
auto region_clone = TRY(region.try_clone());
TRY(region_clone->map(child->address_space().page_directory(), Memory::ShouldFlushTLB::No));
auto* child_region = TRY(child->address_space().add_region(move(region_clone)));
if (region == m_master_tls_region.unsafe_ptr())
if (&region == m_master_tls_region.unsafe_ptr())
child->m_master_tls_region = TRY(child_region->try_make_weak_ptr());
}
}