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Code Issues Releases Activity

kern: tweak KHandleTable impl

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This commit is contained in:
Michael Scire 2020-03-10 04:54:53 -07:00
parent e8dfe04701
commit 45f8343659
1 changed files with 45 additions and 2 deletions
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47
libraries/libmesosphere/include/mesosphere/kern_k_handle_table.hpp
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@ -278,7 +278,7 @@ namespace ams::kern {
return entry;
}
constexpr NOINLINE KAutoObject *GetObjectImpl(ams::svc::Handle handle) const {
constexpr ALWAYS_INLINE KAutoObject *GetObjectImpl(ams::svc::Handle handle) const {
MESOSPHERE_ASSERT_THIS();
/* Handles must not have reserved bits set. */
@ -293,7 +293,7 @@ namespace ams::kern {
}
}
constexpr NOINLINE KAutoObject *GetObjectByIndexImpl(ams::svc::Handle *out_handle, size_t index) const {
constexpr ALWAYS_INLINE KAutoObject *GetObjectByIndexImpl(ams::svc::Handle *out_handle, size_t index) const {
MESOSPHERE_ASSERT_THIS();
/* Index must be in bounds. */
@ -310,6 +310,49 @@ namespace ams::kern {
*out_handle = EncodeHandle(index, entry->GetLinearId());
return entry->GetObject();
}
template<typename T>
ALWAYS_INLINE bool GetMultipleObjects(T **out, const ams::svc::Handle *handles, size_t num_handles) const {
/* Try to convert and open all the handles. */
size_t num_opened;
{
/* Lock the table. */
KScopedDisableDispatch dd;
KScopedSpinLock lk(this->lock);
for (num_opened = 0; num_opened < num_handles; num_opened++) {
/* Get the current handle. */
const auto cur_handle = handles[num_opened];
/* Get the object for the current handle. */
KAutoObject *cur_object = this->GetObjectImpl(cur_handle);
if (AMS_UNLIKELY(cur_object == nullptr)) {
break;
}
/* Cast the current object to the desired type. */
T *cur_t = cur_object->DynamicCast<T*>();
if (AMS_UNLIKELY(cur_t == nullptr)) {
break;
}
/* Open a reference to the current object. */
cur_t->Open();
out[num_opened] = cur_t;
}
}
/* If we converted every object, succeed. */
if (AMS_LIKELY(num_opened == num_handles)) {
return true;
}
/* If we didn't convert entry object, close the ones we opened. */
for (size_t i = 0; i < num_opened; i++) {
out[i]->Close();
}
return false;
}
};
}