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Kernel: Bail out earlier from Process::lookup_stacks_directory

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This commit is contained in:
Hendiadyoin1
2022-02-09 15:37:40 +01:00
committed by Andreas Kling
parent 4260638121
commit 05381753c2
1 changed files with 9 additions and 10 deletions
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19
Kernel/ProcessSpecificExposed.cpp
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@@ -59,21 +59,20 @@ ErrorOr<void> Process::traverse_stacks_directory(FileSystemID fsid, Function<Err
ErrorOr<NonnullRefPtr<Inode>> Process::lookup_stacks_directory(const ProcFS& procfs, StringView name) const
{
ErrorOr<NonnullRefPtr<ProcFSProcessPropertyInode>> thread_stack_inode { ENOENT };
auto maybe_needle = name.to_uint();
if (!maybe_needle.has_value())
return ENOENT;
auto needle = maybe_needle.release_value();
// FIXME: Try to exit the loop earlier
ErrorOr<NonnullRefPtr<ProcFSProcessPropertyInode>> thread_stack_inode { ENOENT };
for_each_thread([&](const Thread& thread) {
int tid = thread.tid().value();
VERIFY(!(tid < 0));
if (name.to_int() == tid) {
auto maybe_inode = ProcFSProcessPropertyInode::try_create_for_thread_stack(procfs, thread.tid(), pid());
if (maybe_inode.is_error()) {
thread_stack_inode = maybe_inode.release_error();
return;
}
thread_stack_inode = maybe_inode.release_value();
if (needle == (unsigned)tid) {
thread_stack_inode = ProcFSProcessPropertyInode::try_create_for_thread_stack(procfs, thread.tid(), pid());
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
if (thread_stack_inode.is_error())