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Miscellaneous functions [ALPHA]
The C++ Thread Porting API provides functions in the <arm-tpl.h> header file.
Note
This topic describes an [ALPHA] feature. See Support level definitions.Types
typedef volatile unsigned long __ARM_TPL_exec_once_flag;
Function
void __ARM_TPL_execute_once(__ARM_TPL_exec_once_flag *__flag, void(*__func)(void));
Usage
The first invocation of the __ARM_TPL_execute_once()
function by any thread within the current process for a given
__func argument must result in a call to the
__func() routine. Subsequent calls to
__ARM_TPL_execute_once() for the same __func
argument must not have any effect. The argument __flag can be used
to determine whether the routine __func has already been invoked or
not.
Returns
This function must return void.