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Fix VMO leak in Process::exec().

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Gotta make sure things get cleaned up before we yield-teleport in exec().
Also VMOs and regions are now viewable through /proc/mm and /proc/regions.
This commit is contained in:
Andreas Kling
2018-11-08 22:24:02 +01:00
parent cd1e7419f0
commit 7b96218389
4 changed files with 51 additions and 8 deletions
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19
Kernel/MemoryManager.cpp
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@@ -619,6 +619,8 @@ Region::Region(LinearAddress a, size_t s, String&& n, bool r, bool w, bool cow)
, is_writable(w)
, cow_map(Bitmap::create(m_vmo->page_count(), cow))
{
m_vmo->set_name(name);
MM.register_region(*this);
}
Region::Region(LinearAddress a, size_t s, RetainPtr<VirtualFileSystem::Node>&& vnode, String&& n, bool r, bool w)
@@ -630,6 +632,7 @@ Region::Region(LinearAddress a, size_t s, RetainPtr<VirtualFileSystem::Node>&& v
, is_writable(w)
, cow_map(Bitmap::create(m_vmo->page_count()))
{
MM.register_region(*this);
}
Region::Region(LinearAddress a, size_t s, RetainPtr<VMObject>&& vmo, size_t offset_in_vmo, String&& n, bool r, bool w, bool cow)
@@ -642,10 +645,12 @@ Region::Region(LinearAddress a, size_t s, RetainPtr<VMObject>&& vmo, size_t offs
, is_writable(w)
, cow_map(Bitmap::create(m_vmo->page_count(), cow))
{
MM.register_region(*this);
}
Region::~Region()
{
MM.unregister_region(*this);
}
void PhysicalPage::return_to_freelist()
@@ -738,10 +743,24 @@ int Region::commit(Process& process)
void MemoryManager::register_vmo(VMObject& vmo)
{
InterruptDisabler disabler;
m_vmos.set(&vmo);
}
void MemoryManager::unregister_vmo(VMObject& vmo)
{
InterruptDisabler disabler;
m_vmos.remove(&vmo);
}
void MemoryManager::register_region(Region& region)
{
InterruptDisabler disabler;
m_regions.set(&region);
}
void MemoryManager::unregister_region(Region& region)
{
InterruptDisabler disabler;
m_regions.remove(&region);
}