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Kernel: Move memory statistics helpers from Process to Space

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This commit is contained in:
Andreas Kling 2021-02-08 22:11:10 +01:00
parent b1c9f93fa3
commit 8bda30edd2
5 changed files with 103 additions and 102 deletions
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87
Kernel/Process.cpp
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@ -554,93 +554,6 @@ void Process::die()
kill_all_threads();
}
size_t Process::amount_dirty_private() const
{
// FIXME: This gets a bit more complicated for Regions sharing the same underlying VMObject.
// The main issue I'm thinking of is when the VMObject has physical pages that none of the Regions are mapping.
// That's probably a situation that needs to be looked at in general.
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
if (!region.is_shared())
amount += region.amount_dirty();
}
return amount;
}
size_t Process::amount_clean_inode() const
{
HashTable<const InodeVMObject*> vmobjects;
{
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
if (region.vmobject().is_inode())
vmobjects.set(&static_cast<const InodeVMObject&>(region.vmobject()));
}
}
size_t amount = 0;
for (auto& vmobject : vmobjects)
amount += vmobject->amount_clean();
return amount;
}
size_t Process::amount_virtual() const
{
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
amount += region.size();
}
return amount;
}
size_t Process::amount_resident() const
{
// FIXME: This will double count if multiple regions use the same physical page.
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
amount += region.amount_resident();
}
return amount;
}
size_t Process::amount_shared() const
{
// FIXME: This will double count if multiple regions use the same physical page.
// FIXME: It doesn't work at the moment, since it relies on PhysicalPage ref counts,
// and each PhysicalPage is only reffed by its VMObject. This needs to be refactored
// so that every Region contributes +1 ref to each of its PhysicalPages.
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
amount += region.amount_shared();
}
return amount;
}
size_t Process::amount_purgeable_volatile() const
{
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
if (region.vmobject().is_anonymous() && static_cast<const AnonymousVMObject&>(region.vmobject()).is_any_volatile())
amount += region.amount_resident();
}
return amount;
}
size_t Process::amount_purgeable_nonvolatile() const
{
size_t amount = 0;
ScopedSpinLock lock(space().get_lock());
for (auto& region : space().regions()) {
if (region.vmobject().is_anonymous() && !static_cast<const AnonymousVMObject&>(region.vmobject()).is_any_volatile())
amount += region.amount_resident();
}
return amount;
}
void Process::terminate_due_to_signal(u8 signal)
{
ASSERT_INTERRUPTS_DISABLED();