dm_sem_open Function

public function dm_sem_open(sem, name, value, create, mode) result(rc)

Opens and optionally creates named semaphore. The given name shall not start with a leading /.

The function returns the following error codes:

• E_INVALID if name is empty or starts with /, or if value is negative.
• E_SYSTEM if system call to open semaphore failed.

Arguments

Type	Intent	Optional	Attributes		Name
type(sem_named_type),	intent(inout)			::	sem	Semaphore type.
character(len=*),	intent(in)			::	name	Semaphore name (without leading /).
integer,	intent(in),	optional		::	value	Initial value.
logical,	intent(in),	optional		::	create	Create semaphore.
integer,	intent(in),	optional		::	mode	Permissions.

Return Value integer