GNU C++ one-time construction API

Data Structures
struct	__attribute__

Functions
int	__cxa_guard_acquire (CxaGuardObject_t *guard_object)
	Acquire __cxa_guard mutex.
void	__cxa_guard_abort (CxaGuardObject_t *guard_object)
	Abort __cxa_guard mutex.
void	__cxa_guard_release (CxaGuardObject_t *guard_object)
	Release __cxa_guard mutex.

Detailed Description

See also

https://itanium-cxx-abi.github.io/cxx-abi/abi.html#once-ctor

When building for C++, please make sure that -fno-threadsafe-statics is not passed to the compiler

Function Documentation

__cxa_guard_abort()

void __cxa_guard_abort

(

CxaGuardObject_t *

guard_object

)

Abort __cxa_guard mutex.

Parameters

guard_object

Guard object

__cxa_guard_acquire()

int __cxa_guard_acquire

(

CxaGuardObject_t *

guard_object

)

Acquire __cxa_guard mutex.

Parameters

guard_object

Guard object

Returns

0 if object is initialized, else initialization of object required

__cxa_guard_release()

void __cxa_guard_release

(

CxaGuardObject_t *

guard_object

)

Release __cxa_guard mutex.

Parameters

guard_object

Guard object