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kern: implement KThread::Finalize

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Michael Scire 2020-07-21 04:58:54 -07:00 • committed by SciresM
parent 3265927ed7
commit 3cf793f87e
4 changed files with 117 additions and 2 deletions
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48
libraries/libmesosphere/source/kern_k_process.cpp
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@ -212,6 +212,54 @@ namespace ams::kern {
return ResultSuccess();
}
Result KProcess::DeleteThreadLocalRegion(KProcessAddress addr) {
KThreadLocalPage *page_to_free = nullptr;
/* Release the region. */
{
KScopedSchedulerLock sl;
/* Try to find the page in the partially used list. */
auto it = this->partially_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize)));
if (it == this->partially_used_tlp_tree.end()) {
/* If we don't find it, it has to be in the fully used list. */
it = this->fully_used_tlp_tree.find(KThreadLocalPage(util::AlignDown(GetInteger(addr), PageSize)));
R_UNLESS(it != this->fully_used_tlp_tree.end(), svc::ResultInvalidAddress());
/* Release the region. */
it->Release(addr);
/* Move the page out of the fully used list. */
KThreadLocalPage *tlp = std::addressof(*it);
this->fully_used_tlp_tree.erase(it);
if (tlp->IsAllFree()) {
page_to_free = tlp;
} else {
this->partially_used_tlp_tree.insert(*tlp);
}
} else {
/* Release the region. */
it->Release(addr);
/* Handle the all-free case. */
KThreadLocalPage *tlp = std::addressof(*it);
if (tlp->IsAllFree()) {
this->partially_used_tlp_tree.erase(it);
page_to_free = tlp;
}
}
}
/* If we should free the page it was in, do so. */
if (page_to_free != nullptr) {
page_to_free->Finalize();
KThreadLocalPage::Free(page_to_free);
}
return ResultSuccess();
}
void *KProcess::GetThreadLocalRegionPointer(KProcessAddress addr) {
KThreadLocalPage *tlp = nullptr;
{