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AK: Add adopt_nonnull_ref_or_enomem

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This gets rid of the ENOMEM boilerplate for handling memory allocation
failures in the kernel.
This commit is contained in:
sin-ack 2021-08-14 12:33:50 +00:00 committed by Andreas Kling
parent f25be94487
commit 134dbe2607
Notes: sideshowbarker 2024-07-18 05:42:38 +09:00 
Author: https://github.com/sin-ack
Commit: https://github.com/SerenityOS/serenity/commit/134dbe2607f
Pull-request: https://github.com/SerenityOS/serenity/pull/9410
Reviewed-by: https://github.com/awesomekling
1 changed files with 16 additions and 0 deletions
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16
AK/RefPtr.h
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@ -16,6 +16,7 @@
#ifdef KERNEL
# include <Kernel/Arch/x86/Processor.h>
# include <Kernel/Arch/x86/ScopedCritical.h>
# include <Kernel/KResult.h>
#endif
namespace AK {
@ -498,9 +499,24 @@ inline RefPtr<T> try_create(Args&&... args)
return adopt_ref_if_nonnull(new (nothrow) T { forward<Args>(args)... });
}
#ifdef KERNEL
template<typename T>
inline Kernel::KResultOr<NonnullRefPtr<T>> adopt_nonnull_ref_or_enomem(T* object)
{
auto result = adopt_ref_if_nonnull(object);
if (!result)
return ENOMEM;
return result.release_nonnull();
}
#endif
}
using AK::adopt_ref_if_nonnull;
using AK::RefPtr;
using AK::static_ptr_cast;
using AK::try_create;
#ifdef KERNEL
using AK::adopt_nonnull_ref_or_enomem;
#endif