FreeCalypso > hg > fc-tourmaline
view src/nucleus/qu_extr.h @ 268:f2e52cab0a73
abb_inth.c: check all interrupt causes, not just one
The original code used if - else if - else if etc constructs, thus
the first detected interrupt was the only one handled. However,
Iota ITSTATREG is a clear-on-read register, thus if we only handle
the first detected interrupt and skip checking the others, then the
other interrupts will be lost, if more than one interrupt happened
to occur in one ABB interrupt handling cycle - a form of rare race
condition. Change the code to check all interrupts that were read
in this cycle.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 13 Jun 2021 18:17:53 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* qu_extr.h Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* QU - Queue Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains function prototypes of all functions */ /* accessible to other components. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* qu_defs.h Queue Management constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Moved include files outside of */ /* the file #ifndef to allow the */ /* use of actual data structures, */ /* modified function prototypes, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #include "qu_defs.h" /* Include QU constants */ /* Check to see if the file has been included already. */ #ifndef QU_EXTR #define QU_EXTR /* Initialization functions. */ VOID QUI_Initialize(VOID); /* Core error checking functions. */ STATUS QUCE_Create_Queue(NU_QUEUE *queue_ptr, CHAR *name, VOID *start_address, UNSIGNED queue_size, OPTION message_type, UNSIGNED message_size, OPTION suspend_type); STATUS QUCE_Delete_Queue(NU_QUEUE *queue_ptr); STATUS QUCE_Send_To_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); STATUS QUCE_Receive_From_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED *actual_size, UNSIGNED suspend); /* Supplemental error checking functions. */ STATUS QUSE_Reset_Queue(NU_QUEUE *queue_ptr); STATUS QUSE_Send_To_Front_Of_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); STATUS QUSE_Broadcast_To_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); /* Core processing functions. */ STATUS QUC_Create_Queue(NU_QUEUE *queue_ptr, CHAR *name, VOID *start_address, UNSIGNED queue_size, OPTION message_type, UNSIGNED message_size, OPTION suspend_type); STATUS QUC_Delete_Queue(NU_QUEUE *queue_ptr); STATUS QUC_Send_To_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); STATUS QUC_Receive_From_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED *actual_size, UNSIGNED suspend); /* Supplemental processing functions. */ STATUS QUS_Reset_Queue(NU_QUEUE *queue_ptr); STATUS QUS_Send_To_Front_Of_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); STATUS QUS_Broadcast_To_Queue(NU_QUEUE *queue_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend); /* Information gathering functions. */ UNSIGNED QUF_Established_Queues(VOID); STATUS QUF_Queue_Information(NU_QUEUE *queue_ptr, CHAR *name, VOID **start_address, UNSIGNED *queue_size, UNSIGNED *available, UNSIGNED *messages, OPTION *message_type, UNSIGNED *message_size, OPTION *suspend_type, UNSIGNED *tasks_waiting, NU_TASK **first_task); UNSIGNED QUF_Queue_Pointers(NU_QUEUE **pointer_list, UNSIGNED maximum_pointers); #endif