#include "qemu/atomic.h"
#include "qemu/thread.h"
+#include "qemu/lockable.h"
typedef struct QemuSeqLock QemuSeqLock;
atomic_set(&sl->sequence, sl->sequence + 1);
}
+/* Lock out other writers and update the count. */
+static inline void seqlock_write_lock_impl(QemuSeqLock *sl, QemuLockable *lock)
+{
+ qemu_lockable_lock(lock);
+ seqlock_write_begin(sl);
+}
+#define seqlock_write_lock(sl, lock) \
+ seqlock_write_lock_impl(sl, QEMU_MAKE_LOCKABLE(lock))
+
+/* Lock out other writers and update the count. */
+static inline void seqlock_write_unlock_impl(QemuSeqLock *sl, QemuLockable *lock)
+{
+ qemu_lockable_unlock(lock);
+ seqlock_write_begin(sl);
+}
+#define seqlock_write_unlock(sl, lock) \
+ seqlock_write_unlock_impl(sl, QEMU_MAKE_LOCKABLE(lock))
+
+
static inline unsigned seqlock_read_begin(const QemuSeqLock *sl)
{
/* Always fail if a write is in progress. */