diff options
| author | Fabricio Voznika <fvoznika@google.com> | 2019-03-05 23:39:14 -0800 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2019-03-05 23:40:18 -0800 |
| commit | 0b76887147820a809beaa497ede8dc4f7b7b120a (patch) | |
| tree | a89be091add2e39163cefe84bf3614a6338f3cd9 /pkg/sentry/kernel/task_futex.go | |
| parent | fcba4e8f040ab4b40e04b9315d718d7e5aa44635 (diff) | |
Priority-inheritance futex implementation
It is Implemented without the priority inheritance part given
that gVisor defers scheduling decisions to Go runtime and doesn't
have control over it.
PiperOrigin-RevId: 236989545
Change-Id: I714c8ca0798743ecf3167b14ffeb5cd834302560
Diffstat (limited to 'pkg/sentry/kernel/task_futex.go')
| -rw-r--r-- | pkg/sentry/kernel/task_futex.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/pkg/sentry/kernel/task_futex.go b/pkg/sentry/kernel/task_futex.go index 921f7bdbc..351cf47d7 100644 --- a/pkg/sentry/kernel/task_futex.go +++ b/pkg/sentry/kernel/task_futex.go @@ -41,6 +41,13 @@ func (t *Task) CompareAndSwapUint32(addr usermem.Addr, old, new uint32) (uint32, }) } +// LoadUint32 implemets futex.Target.LoadUint32. +func (t *Task) LoadUint32(addr usermem.Addr) (uint32, error) { + return t.MemoryManager().LoadUint32(t, addr, usermem.IOOpts{ + AddressSpaceActive: true, + }) +} + // GetSharedKey implements futex.Target.GetSharedKey. func (t *Task) GetSharedKey(addr usermem.Addr) (futex.Key, error) { return t.MemoryManager().GetSharedFutexKey(t, addr) |