diff options
Diffstat (limited to 'libcult/cult/sched/lock.hxx')
-rw-r--r-- | libcult/cult/sched/lock.hxx | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libcult/cult/sched/lock.hxx b/libcult/cult/sched/lock.hxx new file mode 100644 index 0000000..1ecf3fb --- /dev/null +++ b/libcult/cult/sched/lock.hxx @@ -0,0 +1,58 @@ +// file : cult/sched/lock.hxx +// author : Boris Kolpackov <boris@kolpackov.net> +// copyright : Copyright (c) 2005-2010 Boris Kolpackov +// license : GNU GPL v2 + exceptions; see accompanying LICENSE file + +#ifndef CULT_SCHED_LOCK_HXX +#define CULT_SCHED_LOCK_HXX + +#include <cult/types/fundamental.hxx> + +namespace Cult +{ + namespace Sched + { + class Lock: public NonCopyable + { + public: + ~Lock () + { + unlock (); + } + + template <typename X> + Lock (X& x) + : x_ (reinterpret_cast<Void*>(&x)), + unlock_ (&unlock<X>), + locked_ (true) + { + x.lock (); + } + + Void + unlock () + { + if (locked_) + { + unlock_ (x_); + locked_ = false; + } + } + + private: + template <typename X> + static Void + unlock (Void* p) + { + reinterpret_cast<X*> (p)->unlock (); + } + + private: + Void* x_; + Void (*unlock_) (Void*); + Boolean locked_; + }; + } +} + +#endif // CULT_SCHED_LOCK_HXX |