os::rtos::semaphore::attributes Class Reference

Semaphore attributes. More...

#include <cmsis-plus/rtos/os.h>

Inheritance diagram for os::rtos::semaphore::attributes:

Public Member Functions
Constructors & Destructor
constexpr	attributes ()
	Construct a semaphore attributes object instance.
	attributes (const attributes &)=default
	attributes (attributes &&)=default
attributes &	operator= (const attributes &)=default
attributes &	operator= (attributes &&)=default
	~attributes ()=default
	Destruct the semaphore attributes object instance.

Public Attributes
Public Member Variables
count_t	sm_max_value = 1
	Semaphore max count value.
count_t	sm_initial_value = 0
	Semaphore initial count value.
Public Member Variables
rtos::clock *	clock = nullptr
	Attribute with the address of the clock to be used for timeouts.

Detailed Description

The os::rtos::semaphore namespace groups semaphore types, attributes and initialisers.

Allow to assign a name and custom attributes (like initial count, max count) to the semaphore.

To simplify access, the member variables are public and do not require accessors or mutators.

If the attributes are modified after the semaphore creation, the semaphore attributes shall not be affected.

POSIX compatibility

No POSIX similar functionality identified, but inspired by POSIX attributes used in <pthread.h> (IEEE Std 1003.1, 2013 Edition).

Definition at line 84 of file os-semaphore.h.

Constructor & Destructor Documentation

attributes() [1/3]

constexpr os::rtos::semaphore::attributes::attributes ( )

constexpr

Parameters

None.

Definition at line 673 of file os-semaphore.h.

    {
    }

attributes() [2/3]

os::rtos::semaphore::attributes::attributes ( const attributes &  )

default

attributes() [3/3]

os::rtos::semaphore::attributes::attributes ( attributes &&  )

default

~attributes()

os::rtos::semaphore::attributes::~attributes ( )

default

Member Function Documentation

operator=() [1/2]

attributes & os::rtos::semaphore::attributes::operator= ( attributes &&  )

default

operator=() [2/2]

attributes & os::rtos::semaphore::attributes::operator= ( const attributes &  )

default

Member Data Documentation

clock

rtos::clock* os::rtos::internal::attributes_clocked::clock = nullptr

inherited

It may be one of os::rtos::sysclock, os::rtos::rtclock, or any other user object derived from class os::rtos::clock.

If nullptr, the default clock is os::rtos::sysclock.

Definition at line 612 of file os-decls.h.

Referenced by os::rtos::event_flags::event_flags(), os::rtos::mutex::mutex(), and os::rtos::timer::timer().

sm_initial_value

semaphore::count_t os::rtos::semaphore::attributes::sm_initial_value = 0

This values represents the number of resources initially available to the semaphore.

Definition at line 146 of file os-semaphore.h.

sm_max_value

semaphore::count_t os::rtos::semaphore::attributes::sm_max_value = 1

This values represents the maximum number of resources available to the semaphore.

Definition at line 141 of file os-semaphore.h.

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The documentation for this class was generated from the following files:

• os-semaphore.h
• os-semaphore.cpp