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kern: fully implement KSharedMemory (and Svcs)

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Michael Scire 2020-07-22 02:50:19 -07:00 • committed by SciresM
parent 81db43932d
commit 7aa3120f60
7 changed files with 314 additions and 7 deletions
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55
libraries/libmesosphere/source/kern_k_process.cpp
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@ -277,6 +277,61 @@ namespace ams::kern {
MESOSPHERE_UNIMPLEMENTED();
}
Result KProcess::AddSharedMemory(KSharedMemory *shmem, KProcessAddress address, size_t size) {
/* Lock ourselves, to prevent concurrent access. */
KScopedLightLock lk(this->state_lock);
/* Try to find an existing info for the memory. */
KSharedMemoryInfo *info = nullptr;
for (auto it = this->shared_memory_list.begin(); it != this->shared_memory_list.end(); ++it) {
if (it->GetSharedMemory() == shmem) {
info = std::addressof(*it);
break;
}
}
/* If we didn't find an info, create one. */
if (info == nullptr) {
/* Allocate a new info. */
info = KSharedMemoryInfo::Allocate();
R_UNLESS(info != nullptr, svc::ResultOutOfResource());
/* Initialize the info and add it to our list. */
info->Initialize(shmem);
this->shared_memory_list.push_back(*info);
}
/* Open a reference to the shared memory and its info. */
shmem->Open();
info->Open();
return ResultSuccess();
}
void KProcess::RemoveSharedMemory(KSharedMemory *shmem, KProcessAddress address, size_t size) {
/* Lock ourselves, to prevent concurrent access. */
KScopedLightLock lk(this->state_lock);
/* Find an existing info for the memory. */
KSharedMemoryInfo *info = nullptr;
auto it = this->shared_memory_list.begin();
for (/* ... */; it != this->shared_memory_list.end(); ++it) {
if (it->GetSharedMemory() == shmem) {
info = std::addressof(*it);
break;
}
}
MESOSPHERE_ABORT_UNLESS(info != nullptr);
/* Close a reference to the info and its memory. */
if (info->Close()) {
this->shared_memory_list.erase(it);
KSharedMemoryInfo::Free(info);
}
shmem->Close();
}
Result KProcess::CreateThreadLocalRegion(KProcessAddress *out) {
KThreadLocalPage *tlp = nullptr;
KProcessAddress tlr = Null<KProcessAddress>;