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kern: KMemoryManager::Allocate -> AllocateAndOpen

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Michael Scire 2020-12-01 06:01:44 -08:00 • committed by SciresM
parent 3bce008170
commit cc11d452e5
8 changed files with 85 additions and 44 deletions
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19
libraries/libmesosphere/include/mesosphere/kern_k_memory_manager.hpp
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@ -96,12 +96,23 @@ namespace ams::kern {
constexpr Impl *GetNext() const { return this->next; }
constexpr Impl *GetPrev() const { return this->prev; }
void OpenFirst(KVirtualAddress address, size_t num_pages) {
size_t index = this->GetPageOffset(address);
const size_t end = index + num_pages;
while (index < end) {
const RefCount ref_count = (++this->page_reference_counts[index]);
MESOSPHERE_ABORT_UNLESS(ref_count == 1);
index++;
}
}
void Open(KVirtualAddress address, size_t num_pages) {
size_t index = this->GetPageOffset(address);
const size_t end = index + num_pages;
while (index < end) {
const RefCount ref_count = (++this->page_reference_counts[index]);
MESOSPHERE_ABORT_UNLESS(ref_count > 0);
MESOSPHERE_ABORT_UNLESS(ref_count > 1);
index++;
}
@ -178,9 +189,9 @@ namespace ams::kern {
NOINLINE Result InitializeOptimizedMemory(u64 process_id, Pool pool);
NOINLINE void FinalizeOptimizedMemory(u64 process_id, Pool pool);
NOINLINE KVirtualAddress AllocateContinuous(size_t num_pages, size_t align_pages, u32 option);
NOINLINE Result Allocate(KPageGroup *out, size_t num_pages, u32 option);
NOINLINE Result AllocateForProcess(KPageGroup *out, size_t num_pages, u32 option, u64 process_id, u8 fill_pattern);
NOINLINE KVirtualAddress AllocateAndOpenContinuous(size_t num_pages, size_t align_pages, u32 option);
NOINLINE Result AllocateAndOpen(KPageGroup *out, size_t num_pages, u32 option);
NOINLINE Result AllocateAndOpenForProcess(KPageGroup *out, size_t num_pages, u32 option, u64 process_id, u8 fill_pattern);
void Open(KVirtualAddress address, size_t num_pages) {
/* Repeatedly open references until we've done so for all pages. */