Internal Error Handler

Internal Error Handler. More...

Files
file	interr.h
	Constants and Prototypes Related to the Internal Error Handler.
file	interr.c
	Initiates system termination.

Classes
struct	Internal_errors_Information

Typedefs
typedef CPU_Uint32ptr	Internal_errors_t

Enumerations
enum	Internal_errors_Source {   INTERNAL_ERROR_CORE = 0, INTERNAL_ERROR_RTEMS_API = 1, INTERNAL_ERROR_POSIX_API = 2, RTEMS_FATAL_SOURCE_BDBUF = 3,   RTEMS_FATAL_SOURCE_APPLICATION = 4, RTEMS_FATAL_SOURCE_EXIT = 5, RTEMS_FATAL_SOURCE_BSP = 6, RTEMS_FATAL_SOURCE_ASSERT = 7,   RTEMS_FATAL_SOURCE_STACK_CHECKER = 8, RTEMS_FATAL_SOURCE_EXCEPTION = 9, RTEMS_FATAL_SOURCE_SMP = 10, RTEMS_FATAL_SOURCE_PANIC = 11,   RTEMS_FATAL_SOURCE_INVALID_HEAP_FREE = 12, RTEMS_FATAL_SOURCE_HEAP = 13, RTEMS_FATAL_SOURCE_LAST = 0xffffffff }
	This type lists the possible sources from which an error can be reported. More...
enum	Internal_errors_Core_list {   INTERNAL_ERROR_TOO_LITTLE_WORKSPACE = 2, INTERNAL_ERROR_THREAD_EXITTED = 5, INTERNAL_ERROR_INCONSISTENT_MP_INFORMATION = 6, INTERNAL_ERROR_INVALID_NODE = 7,   INTERNAL_ERROR_NO_MPCI = 8, INTERNAL_ERROR_BAD_PACKET = 9, INTERNAL_ERROR_OUT_OF_PACKETS = 10, INTERNAL_ERROR_OUT_OF_GLOBAL_OBJECTS = 11,   INTERNAL_ERROR_OUT_OF_PROXIES = 12, INTERNAL_ERROR_INVALID_GLOBAL_ID = 13, INTERNAL_ERROR_BAD_STACK_HOOK = 14, INTERNAL_ERROR_GXX_KEY_ADD_FAILED = 21,   INTERNAL_ERROR_GXX_MUTEX_INIT_FAILED = 22, INTERNAL_ERROR_NO_MEMORY_FOR_HEAP = 23, INTERNAL_ERROR_CPU_ISR_INSTALL_VECTOR = 24, INTERNAL_ERROR_RESOURCE_IN_USE = 25,   INTERNAL_ERROR_RTEMS_INIT_TASK_ENTRY_IS_NULL = 26, INTERNAL_ERROR_THREAD_QUEUE_DEADLOCK = 28, INTERNAL_ERROR_THREAD_QUEUE_ENQUEUE_STICKY_FROM_BAD_STATE = 29, INTERNAL_ERROR_BAD_THREAD_DISPATCH_DISABLE_LEVEL = 30,   INTERNAL_ERROR_BAD_THREAD_DISPATCH_ENVIRONMENT = 31, INTERNAL_ERROR_RTEMS_INIT_TASK_CREATE_FAILED = 32, INTERNAL_ERROR_POSIX_INIT_THREAD_CREATE_FAILED = 33, INTERNAL_ERROR_LIBIO_STDOUT_FD_OPEN_FAILED = 36,   INTERNAL_ERROR_LIBIO_STDERR_FD_OPEN_FAILED = 37, INTERNAL_ERROR_ILLEGAL_USE_OF_FLOATING_POINT_UNIT = 38, INTERNAL_ERROR_ARC4RANDOM_GETENTROPY_FAIL = 39, INTERNAL_ERROR_NO_MEMORY_FOR_PER_CPU_DATA = 40,   INTERNAL_ERROR_TOO_LARGE_TLS_SIZE = 41 }
	A list of errors which are generated internally by the executive core. More...

Functions
void	_Terminate (Internal_errors_Source the_source, Internal_errors_t the_error) RTEMS_NO_RETURN
	Initiates system termination. More...
void	_Internal_error (Internal_errors_Core_list core_error) RTEMS_NO_RETURN
	Terminates the system with an INTERNAL_ERROR_CORE fatal source and the specified core error code. More...

Variables
Internal_errors_Information	_Internal_errors_What_happened

Detailed Description

Internal Error Handler.

This handler encapsulates functionality which provides the foundation Semaphore services used in all of the APIs supported by RTEMS.

Enumeration Type Documentation

Internal_errors_Core_list

enum Internal_errors_Core_list

A list of errors which are generated internally by the executive core.

Do not re-use numbers of obsolete error codes. Comment no longer used error codes and do not uncomment commented or obsolete error codes.

Definition at line 165 of file interr.h.

Internal_errors_Source

enum Internal_errors_Source

This type lists the possible sources from which an error can be reported.

Enumerator
INTERNAL_ERROR_CORE	Errors of the core system. See also Internal_errors_Core_list.
INTERNAL_ERROR_RTEMS_API	Errors of the RTEMS API.
INTERNAL_ERROR_POSIX_API	Errors of the POSIX API.
RTEMS_FATAL_SOURCE_BDBUF	Fatal source for the block device cache. See also rtems_bdbuf_fatal_code.
RTEMS_FATAL_SOURCE_APPLICATION	Fatal source for application specific errors. The fatal code is application specific.
RTEMS_FATAL_SOURCE_EXIT	Fatal source of exit(). The fatal code is the exit() status code.
RTEMS_FATAL_SOURCE_BSP	Fatal source for BSP errors. The fatal codes are defined in <bsp/fatal.h>. Examples are interrupt and exception initialization. See also bsp_fatal_code and bsp_fatal().
RTEMS_FATAL_SOURCE_ASSERT	Fatal source of assert(). The fatal code is the pointer value of the assert context. See also rtems_assert_context.
RTEMS_FATAL_SOURCE_STACK_CHECKER	Fatal source of the stack checker. The fatal code is the object name of the executing task.
RTEMS_FATAL_SOURCE_EXCEPTION	Fatal source of the exceptions. The fatal code is the pointer value of the exception frame pointer. See also rtems_exception_frame and rtems_exception_frame_print().
RTEMS_FATAL_SOURCE_SMP	Fatal source of SMP domain. See also SMP_Fatal_code.
RTEMS_FATAL_SOURCE_PANIC	Fatal source of rtems_panic(). See also rtem
RTEMS_FATAL_SOURCE_INVALID_HEAP_FREE	Fatal source for invalid C program heap frees via free(). The fatal code is the bad pointer.
RTEMS_FATAL_SOURCE_HEAP	Fatal source for heap errors. The fatal code is the address to a heap error context (Heap_Error_context).
RTEMS_FATAL_SOURCE_LAST	The last available fatal source. This enum value ensures that the enum type needs at least 32-bits for architectures with short enums.

Definition at line 47 of file interr.h.

Function Documentation

_Internal_error()

void _Internal_error

(

Internal_errors_Core_list

core_error

)

Terminates the system with an INTERNAL_ERROR_CORE fatal source and the specified core error code.

Parameters

core_error

The core error code.

See also

_Terminate().

Definition at line 51 of file interr.c.

_Terminate()

void _Terminate	(	Internal_errors_Source	the_source,
		Internal_errors_t	the_error
	)

Initiates system termination.

This routine is invoked when the application or the executive itself determines that a fatal error has occurred or a final system state is reached (for example after exit()).

The first action of this function is to call the fatal handler of the user extensions. For the initial extensions the following conditions are required

• a valid stack pointer and enough stack space,
• a valid code memory, and
• valid read-only data.

For the initial extensions the read-write data (including BSS segment) is not required on single processor configurations. On SMP configurations however the read-write data must be initialized since this function must determine the state of the other processors and request them to shut-down if necessary.

Non-initial extensions require in addition valid read-write data. The BSP may install an initial extension that performs a system reset. In this case the non-initial extensions will be not called.

Once all fatal handler executed the error information will be stored to _Internal_errors_What_happened and the system state is set to SYSTEM_STATE_TERMINATED.

The final step is to call the CPU specific _CPU_Fatal_halt().

Parameters

the_source	The fatal source indicating the subsystem the fatal condition originated in.
the_error	The fatal error code. This value must be interpreted with respect to the source.

See also

rtems_fatal() and _Internal_error().

Definition at line 31 of file interr.c.

Variable Documentation

_Internal_errors_What_happened

Internal_errors_Information _Internal_errors_What_happened

When a fatal error occurs, the error information is stored here.

Definition at line 29 of file interr.c.