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Ext2FS: Lock a lot. Go way overkill with locking for now.

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This commit is contained in:
Andreas Kling 2019-02-20 13:09:59 +01:00
parent 809ffa56d7
commit 3df4a902df
3 changed files with 52 additions and 15 deletions
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15
AK/Lock.h
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@ -44,18 +44,21 @@ private:
class Locker {
public:
[[gnu::always_inline]] explicit Locker(Lock& l) : m_lock(l) { lock(); }
[[gnu::always_inline]] ~Locker() { unlock(); }
[[gnu::always_inline]] void unlock() { m_lock.unlock(); }
[[gnu::always_inline]] void lock() { m_lock.lock(); }
[[gnu::always_inline]] inline explicit Locker(Lock& l) : m_lock(l) { lock(); }
[[gnu::always_inline]] inline ~Locker() { unlock(); }
[[gnu::always_inline]] inline void unlock() { m_lock.unlock(); }
[[gnu::always_inline]] inline void lock() { m_lock.lock(); }
private:
Lock& m_lock;
};
inline void Lock::lock()
[[gnu::always_inline]] inline void Lock::lock()
{
ASSERT_INTERRUPTS_ENABLED();
if (!are_interrupts_enabled()) {
kprintf("Interrupts disabled when trying to take Lock{%s}\n", m_name);
hang();
}
ASSERT(!Scheduler::is_active());
for (;;) {
if (CAS(&m_lock, 1, 0) == 0) {