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// -*- c++ -*-
#ifndef LOCK_AND_SIGNAL_H
#define LOCK_AND_SIGNAL_H
#include "rust_globals.h"
#ifndef RUST_NDEBUG
#define DEBUG_LOCKS
#endif
class lock_and_signal {
#if defined(__WIN32__)
HANDLE _event;
CRITICAL_SECTION _cs;
#if defined(DEBUG_LOCKS)
DWORD _holding_thread;
#endif
#else
pthread_cond_t _cond;
pthread_mutex_t _mutex;
#if defined(DEBUG_LOCKS)
pthread_t _holding_thread;
#endif
#endif
#if defined(DEBUG_LOCKS)
bool lock_held_by_current_thread();
#endif
void must_not_be_locked();
public:
lock_and_signal();
virtual ~lock_and_signal();
void lock();
void unlock();
void wait();
void signal();
void must_have_lock();
void must_not_have_lock();
};
class scoped_lock {
lock_and_signal &lock;
public:
scoped_lock(lock_and_signal &lock);
~scoped_lock();
};
#endif /* LOCK_AND_SIGNAL_H */
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