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Kernel: Add Process::try_for_each_thread() for fallible iteration

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This API will allow users to short circuit iteration and properly
propagate errors.
This commit is contained in:
Idan Horowitz 2022-02-24 20:01:33 +02:00 committed by Andreas Kling
parent f4875b9967
commit aca6c0c031
Notes: sideshowbarker 2024-07-17 18:10:26 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/aca6c0c031
Pull-request: https://github.com/SerenityOS/serenity/pull/12754
Reviewed-by: https://github.com/bgianfo ✅
Reviewed-by: https://github.com/elcuco
1 changed files with 10 additions and 0 deletions
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10
Kernel/Process.h
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@ -237,6 +237,7 @@ public:
IterationDecision for_each_thread(Callback);
template<IteratorFunction<Thread&> Callback>
IterationDecision for_each_thread(Callback callback) const;
ErrorOr<void> try_for_each_thread(Function<ErrorOr<void>(Thread const&)>) const;
// Non-breakable iteration functions
template<VoidFunction<Process&> Callback>
@ -939,6 +940,15 @@ inline IterationDecision Process::for_each_thread(Callback callback) const
return IterationDecision::Continue;
}
inline ErrorOr<void> Process::try_for_each_thread(Function<ErrorOr<void>(Thread const&)> callback) const
{
return thread_list().with([&](auto& thread_list) -> ErrorOr<void> {
for (auto& thread : thread_list)
TRY(callback(thread));
return {};
});
}
template<VoidFunction<Thread&> Callback>
inline IterationDecision Process::for_each_thread(Callback callback)
{