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.

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_JUMP
POSIX_C_LANG_SUPPORT	yes	POSIX_C_LANG_SUPPORT
POSIX_DEVICE_IO		†
POSIX_FILE_LOCKING
POSIX_SIGNALS		†
POSIX_SINGLE_PROCESS	yes
POSIX_THREADS_BASE	yes	†
XSI_THREADS_EXT	yes

PSE51 Option Requirements
Symbol	Support	Remarks
_POSIX_CLOCK_SELECTION	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_FSYNC	-1
_POSIX_MEMLOCK	-1
_POSIX_MEMLOCK_RANGE	-1
_POSIX_MONOTONIC_CLOCK	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_REALTIME_SIGNALS	-1
_POSIX_SEMAPHORES	200809L	`CONFIG_PTHREAD_IPC`
_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	-1	`CONFIG_POSIX_PRIORITY_SCHEDULING` (will fail with `ENOSYS`†)
_POSIX_THREAD_SPORADIC_SERVER	-1
_POSIX_TIMEOUTS	200809L	`CONFIG_PTHREAD_IPC`
_POSIX_TIMERS	200809L	`CONFIG_POSIX_CLOCK`

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_JUMP	yes	POSIX_C_LANG_JUMP
POSIX_C_LANG_MATH	yes	POSIX_C_LANG_MATH
POSIX_C_LANG_SUPPORT	yes	POSIX_C_LANG_SUPPORT
POSIX_DEVICE_IO		†
POSIX_FD_MGMT
POSIX_FILE_LOCKING
POSIX_FILE_SYSTEM
POSIX_SIGNALS		†
POSIX_SINGLE_PROCESS	yes
POSIX_THREADS_BASE	yes	†
XSI_THREADS_EXT	yes

PSE52 Option Requirements
Symbol	Support	Remarks
_POSIX_CLOCK_SELECTION	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_FSYNC	-1
_POSIX_MAPPED_FILES	-1
_POSIX_MEMLOCK	-1
_POSIX_MEMLOCK_RANGE	-1
_POSIX_MESSAGE_PASSING	200809L	`CONFIG_POSIX_MQUEUE`
_POSIX_MONOTONIC_CLOCK	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_REALTIME_SIGNALS	-1
_POSIX_SEMAPHORES	200809L	`CONFIG_PTHREAD_IPC`
_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	-1
_POSIX_THREAD_SPORADIC_SERVER	-1
_POSIX_TIMEOUTS	200809L	`CONFIG_PTHREAD_IPC`
_POSIX_TIMERS	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_TRACE	-1
_POSIX_TRACE_EVENT_FILTER	-1
_POSIX_TRACE_LOG	-1

Dedicated Realtime System Profile (PSE53)

PSE53 System Interfaces
Symbol	Support	Remarks
_POSIX_AEP_REALTIME_DEDICATED	-1

PSE53 Option Groups
Symbol	Support	Remarks
POSIX_C_LANG_JUMP	yes	POSIX_C_LANG_JUMP
POSIX_C_LANG_MATH	yes	POSIX_C_LANG_MATH
POSIX_C_LANG_SUPPORT	yes	POSIX_C_LANG_SUPPORT
POSIX_DEVICE_IO		†
POSIX_FD_MGMT
POSIX_FILE_LOCKING
POSIX_FILE_SYSTEM
POSIX_MULTI_PROCESS		†
POSIX_NETWORKING	yes	POSIX_NETWORKING
POSIX_PIPE		†
POSIX_SIGNALS		†
POSIX_SIGNAL_JUMP		†
POSIX_SINGLE_PROCESS	yes
POSIX_THREADS_BASE	yes	†
XSI_THREADS_EXT	yes

PSE53 Option Requirements
Symbol	Support	Remarks
_POSIX_ASYNCHRONOUS_IO	-1
_POSIX_CLOCK_SELECTION	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_CPUTIME	-1
_POSIX_FSYNC	-1
_POSIX_MAPPED_FILES	-1
_POSIX_MEMLOCK	-1
_POSIX_MEMLOCK_RANGE	-1
_POSIX_MEMORY_PROTECTION	-1
_POSIX_MESSAGE_PASSING	200809L	`CONFIG_POSIX_MQUEUE`
_POSIX_MONOTONIC_CLOCK	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_PRIORITIZED_IO	-1
_POSIX_PRIORITY_SCHEDULING	-1
_POSIX_RAW_SOCKETS	200809L	`CONFIG_NET_SOCKETS`
_POSIX_REALTIME_SIGNALS	-1
_POSIX_SEMAPHORES	200809L	`CONFIG_PTHREAD_IPC`
_POSIX_SHARED_MEMORY_OBJECTS	-1
_POSIX_SPAWN	-1
_POSIX_SPORADIC_SERVER	-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	-1
_POSIX_THREAD_PROCESS_SHARED	-1
_POSIX_THREAD_SPORADIC_SERVER	-1
_POSIX_TIMEOUTS	200809L	`CONFIG_PTHREAD_IPC`
_POSIX_TIMERS	200809L	`CONFIG_POSIX_CLOCK`
_POSIX_TRACE	-1
_POSIX_TRACE_EVENT_FILTER	-1
_POSIX_TRACE_LOG	-1