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RTEMS 6.1-rc5
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RTEMS 6.1-rc5
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This group contains the Internal Error Handler implementation. More...
Files | |
| file | interr.h |
| This header file provides the interfaces of the Internal Error Handler. | |
| file | interr.c |
| This source file contains the definition of _System_state_Current and the implementation of _Terminate() and _Internal_error(). | |
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_SPURIOUS_INTERRUPT = 14 , RTEMS_FATAL_SOURCE_LAST = 0x7fffffff } |
| 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_NO_MEMORY_FOR_HEAP = 23 , INTERNAL_ERROR_CPU_ISR_INSTALL_VECTOR = 24 , INTERNAL_ERROR_RESOURCE_IN_USE = 25 , 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 , INTERNAL_ERROR_RTEMS_INIT_TASK_CONSTRUCT_FAILED = 42 , INTERNAL_ERROR_IDLE_THREAD_CREATE_FAILED = 43 , INTERNAL_ERROR_NO_MEMORY_FOR_IDLE_TASK_STORAGE = 44 , INTERNAL_ERROR_IDLE_THREAD_STACK_TOO_SMALL = 45 , INTERNAL_ERROR_CANNOT_DISABLE_DATA_CACHE = 46 } |
| A list of errors which are generated internally by the executive core. More... | |
Functions | |
| RTEMS_NO_RETURN void | _Terminate (Internal_errors_Source the_source, Internal_errors_t the_error) |
| Initiates the system termination. | |
| RTEMS_NO_RETURN 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. | |
This group contains the Internal Error Handler implementation.
This handler encapsulates functionality to terminate the system.
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.
This type lists the possible sources from which an error can be reported.
| Enumerator | |
|---|---|
| INTERNAL_ERROR_CORE | Errors of the core system.
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| 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.
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| 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.
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| RTEMS_FATAL_SOURCE_ASSERT | Fatal source of assert(). The fatal code is the pointer value of the assert context.
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| 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.
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| RTEMS_FATAL_SOURCE_SMP | Fatal source of SMP domain.
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| RTEMS_FATAL_SOURCE_PANIC | Fatal source of rtems_panic().
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| 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_SPURIOUS_INTERRUPT | Fatal source for spurious interrupts. The fatal code is the interrupt vector number of the spurious interrupt. |
| 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. |
| RTEMS_NO_RETURN 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.
| core_error | The core error code. |
| RTEMS_NO_RETURN void _Terminate | ( | Internal_errors_Source | the_source, |
| Internal_errors_t | the_error | ||
| ) |
Initiates the system termination.
This handler is invoked to terminate the system. It is called by all services which determine that a system termination is required. For example, it is called by all higher level directives which announce a fatal error like rtems_fatal() and exit().
The first action of the system termination handler is to disable maskable interrupts. This ensures that interrupts on this processor do not interfere with the system termination procedure. This reduces the likelihood to end up in a recursive system termination procedure.
The second action of the system termination handler is to call the fatal extensions of the user extensions.
The fatal extensions are called with three parameters:
The fatal extensions of the initial extension sets are invoked first. For them, the following execution environment is required
In uniprocessor configurations, the read-write data (including .bss segment) is not required. In SMP configurations, however, the read-write data must have been initialized to determine the state of the other processors and request them to shut-down if necessary. The board support package (BSP) may install an initial extension that performs a system reset. See the BSP documentation in the RTEMS User Manual for more information how the system reset is done. The BSP provided fatal extension can be disabled by the CONFIGURE_DISABLE_BSP_SETTINGS application configuration option. It is recommended to provide an application-specific fatal extension using the CONFIGURE_INITIAL_EXTENSIONS application configuration option.
In certain error conditions, it may be unreliable to carry out the following steps of the termination procedure since the read-write data may be corrupt. One of the fatal extensions of the initial extension set should reset the system to stop the system termination procedure.
After invoking the fatal extensions of the initial extension sets, the fatal extensions of the dynamic extension sets are invoked. For this procedure valid read-write data is required.
The last action of the system termination handler is to execute the CPU port provided idle loop _CPU_Thread_Idle_body() with maskable interrupts disabled. Please note, that properly configured applications should not reach this point.
| the_source | is the fatal source indicating the subsystem the fatal condition originated in. |
| the_error | is the fatal error code. This value must be interpreted with respect to the source. |
1.9.6