POSIX Application Environment Profiles (AEP)

Although inactive, IEEE 1003.13-2003 defined a number of AEP that inspired the modern subprofiling options of IEEE 1003.1-2017. The single-purpose realtime system profiles are listed below, for reference, in terms that agree with the current POSIX-1 standard. PSE54 is not considered at this time.

System Interfaces

The required POSIX System Interfaces are supported for each Application Environment Profile.

System Interfaces

Minimal Realtime System Profile (PSE51)

The Minimal Realtime System Profile (PSE51) includes all of the System Interfaces along with several additional features.

Minimal Realtime System Profile (PSE51)

PSE51 System Interfaces

Symbol	Support	Remarks
_POSIX_AEP_REALTIME_MINIMAL	-1

PSE51 Option Groups

Symbol	Support	Remarks
POSIX_C_LANG_JUMP	yes
POSIX_C_LANG_SUPPORT	yes
POSIX_DEVICE_IO
POSIX_SIGNALS
POSIX_SINGLE_PROCESS	yes
POSIX_THREADS_BASE	yes
XSI_THREADS_EXT	yes

PSE51 Option Requirements

Symbol	Support	Remarks
_POSIX_FSYNC	200809L	CONFIG_POSIX_FSYNC
_POSIX_MEMLOCK	-1
_POSIX_MEMLOCK_RANGE	-1
_POSIX_MONOTONIC_CLOCK	200809L	CONFIG_POSIX_CLOCK
_POSIX_SHARED_MEMORY_OBJECTS	-1
_POSIX_SYNCHRONIZED_IO	-1
_POSIX_THREAD_ATTR_STACKADDR	200809L	CONFIG_PTHREAD
_POSIX_THREAD_ATTR_STACKSIZE	200809L	CONFIG_PTHREAD
_POSIX_THREAD_CPUTIME	-1
_POSIX_THREAD_PRIO_INHERIT	200809L	CONFIG_PTHREAD_MUTEX
_POSIX_THREAD_PRIO_PROTECT	-1
_POSIX_THREAD_PRIORITY_SCHEDULING	200809L	CONFIG_POSIX_PRIORITY_SCHEDULING
_POSIX_THREAD_SPORADIC_SERVER	-1

Realtime Controller System Profile (PSE52)

The Realtime Controller System Profile (PSE52) includes all features from PSE51 and the System Interfaces.

Realtime Controller System Profile (PSE52)

PSE52 System Interfaces

Symbol	Support	Remarks
_POSIX_AEP_REALTIME_CONTROLLER	-1

PSE52 Option Groups

Symbol	Support	Remarks
POSIX_C_LANG_MATH	yes
POSIX_FD_MGMT
POSIX_FILE_SYSTEM

PSE52 Option Requirements

Symbol	Support	Remarks
_POSIX_MESSAGE_PASSING	200809L	CONFIG_POSIX_MQUEUE
_POSIX_TRACE	-1
_POSIX_TRACE_EVENT_FILTER	-1
_POSIX_TRACE_LOG	-1

Dedicated Realtime System Profile (PSE53)

The Dedicated Realtime System Profile (PSE53) includes all features from PSE52, PSE51, and the System Interfaces.

Dedicated Realtime System Profile (PSE53)

PSE53 System Interfaces

Symbol	Support	Remarks
_POSIX_AEP_REALTIME_DEDICATED	-1

PSE53 Option Groups

Symbol	Support	Remarks
POSIX_MULTI_PROCESS		†
POSIX_NETWORKING	yes
POSIX_PIPE
POSIX_SIGNAL_JUMP

PSE53 Option Requirements

Symbol	Support	Remarks
_POSIX_CPUTIME	-1
_POSIX_PRIORITIZED_IO	-1
_POSIX_PRIORITY_SCHEDULING	-1
_POSIX_RAW_SOCKETS	200809L	CONFIG_NET_SOCKETS_PACKET
_POSIX_SPAWN	-1	†
_POSIX_SPORADIC_SERVER	-1	†