zypp::thread Namespace Reference

Classes
class	Mutex
	A recursive Mutex. More...
class	MutexException
	Exception type thrown on mutex errors. More...
class	MutexLock

Typedefs
typedef pthread_mutex_t	RecursiveMutex_t
typedef pthread_once_t	OnceFlag
	The OnceFlag variable type. More...

Functions
void	callOnce (OnceFlag &flag, void(*func)())
	Call once function. More...

Typedef Documentation

typedef pthread_mutex_t zypp::thread::RecursiveMutex_t

Definition at line 26 of file Mutex.h.

typedef pthread_once_t zypp::thread::OnceFlag

The OnceFlag variable type.

Definition at line 32 of file Once.h.

Function Documentation

void zypp::thread::callOnce ( OnceFlag &  flag, void(*)()  func  )

inline

Call once function.

The purpose of callOnce is to ensure that a piece of initialization code is executed at most once. The OnceFlag flag has to point to a static or extern variable, that was statically initialized to ZYPP_ONCE_INIT.

The first time callOnce is called with a given onceFlag argument, it calls fuct with no argument and changes the value of flag to indicate that the function has been run. Subsequent calls with the same once flag does nothing.

Definition at line 50 of file Once.h.