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Kernel: SpinLocks now reschedule if they cannot aquire the lock 

This allows us to not actually spin doing nothing while waiting for
another (not executing) to release the lock. This api won't probably
work when we get to SMP
This commit is contained in:
Bananymous 2023-06-09 00:53:32 +03:00
parent 5032e79be3
commit c0fe4756cb
1 changed files with 1 additions and 5 deletions
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6
kernel/kernel/SpinLock.cpp
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@ -8,7 +8,7 @@ namespace Kernel
{ {
while (__sync_lock_test_and_set(&m_lock, 1)) while (__sync_lock_test_and_set(&m_lock, 1))
while (m_lock) while (m_lock)
__builtin_ia32_pause(); Scheduler::get().reschedule();
} }
void SpinLock::unlock() void SpinLock::unlock()
@ -27,10 +27,6 @@ namespace Kernel
while (true) while (true)
{ {
// Wait for us to be the locker or the lock being free
while (m_locker != -1 && m_locker != tid)
__builtin_ia32_pause();
m_lock.lock(); m_lock.lock();
if (m_locker == tid) if (m_locker == tid)
{ {