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Kernel: Remove ProcessInspectionHandle and make Process RefCounted

By making the Process class RefCounted we don't really need
ProcessInspectionHandle anymore. This also fixes some race
conditions where a Process may be deleted while still being
used by ProcFS.

Also make sure to acquire the Process' lock when accessing
regions.

Last but not least, there's no reason why a thread can't be
scheduled while being inspected, though in practice it won't
happen anyway because the scheduler lock is held at the same
time.
This commit is contained in:
Tom 2020-08-01 20:04:56 -06:00 committed by Andreas Kling
parent 5bbf6ed46b
commit 538b985487
13 changed files with 191 additions and 273 deletions

View file

@ -139,7 +139,7 @@ int Process::sys$kill(pid_t pid, int signal)
return do_killself(signal);
}
ScopedSpinLock lock(g_processes_lock);
auto* peer = Process::from_pid(pid);
auto peer = Process::from_pid(pid);
if (!peer)
return -ESRCH;
return do_kill(*peer, signal);