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Kernel: Process destruction should destroy all child threads.

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We were only destroying the main thread when a process died, leaving any
secondary threads around. They couldn't run, but because they were still
in the global thread list, strange things could happen since they had some
now-stale pointers to their old process.
This commit is contained in:
Andreas Kling 2019-04-23 22:17:01 +02:00
parent e2cd572e60
commit c5c4e54a67
2 changed files with 19 additions and 2 deletions
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19
Kernel/Process.cpp
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@ -278,7 +278,16 @@ int Process::do_exec(String path, Vector<String> arguments, Vector<String> envir
dbgprintf("%s(%d) do_exec: thread_count() = %d\n", m_name.characters(), m_pid, thread_count());
// FIXME(Thread): Kill any threads the moment we commit to the exec().
ASSERT(thread_count() == 1);
if (thread_count() != 1) {
dbgprintf("Gonna die because I have many threads! These are the threads:\n");
for_each_thread([] (Thread& thread) {
dbgprintf("Thread{%p}: TID=%d, PID=%d\n", &thread, thread.tid(), thread.pid());
return IterationDecision::Continue;
});
ASSERT(thread_count() == 1);
ASSERT_NOT_REACHED();
}
auto parts = path.split('/');
if (parts.is_empty())
@ -605,6 +614,14 @@ Process::~Process()
dbgprintf("~Process{%p} name=%s pid=%d, m_fds=%d\n", this, m_name.characters(), pid(), m_fds.size());
delete m_main_thread;
m_main_thread = nullptr;
Vector<Thread*, 16> my_threads;
for_each_thread([&my_threads] (auto& thread) {
my_threads.append(&thread);
return IterationDecision::Continue;
});
for (auto* thread : my_threads)
delete thread;
}
void Process::dump_regions()