FreeCalypso > hg > fc-tourmaline
view src/nucleus/dm_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 */ /* */ /* dm_extr.h Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* DM - Dynamic Memory Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains function prototypes of all functions */ /* accessible to other components. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* dm_defs.h Dynamic 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) */ /* 05-01-2000 Corrected a prefix problem for */ /* DMC_Established_Memory_Pools, */ /* DMC_Memory_Pool_Information, */ /* DMC_Memory_Pool_Pointers by */ /* changing them to DMF_ */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #include "dm_defs.h" /* Include DM constants */ /* Check to see if the file has been included already. */ #ifndef DM_EXTR #define DM_EXTR /* Initialization functions. */ VOID DMI_Initialize(VOID); /* Error checking functions. */ STATUS DMCE_Create_Memory_Pool(NU_MEMORY_POOL *pool_ptr, CHAR *name, VOID *start_address, UNSIGNED pool_size, UNSIGNED min_allocation, OPTION suspend_type); STATUS DMCE_Delete_Memory_Pool(NU_MEMORY_POOL *pool_ptr); STATUS DMCE_Allocate_Memory(NU_MEMORY_POOL *pool_ptr, VOID **return_pointer, UNSIGNED size, UNSIGNED suspend); STATUS DMCE_Deallocate_Memory(VOID *memory); /* Core processing functions. */ STATUS DMC_Create_Memory_Pool(NU_MEMORY_POOL *pool_ptr, CHAR *name, VOID *start_address, UNSIGNED pool_size, UNSIGNED min_allocation, OPTION suspend_type); STATUS DMC_Delete_Memory_Pool(NU_MEMORY_POOL *pool_ptr); STATUS DMC_Allocate_Memory(NU_MEMORY_POOL *pool_ptr, VOID **return_pointer, UNSIGNED size, UNSIGNED suspend); STATUS DMC_Deallocate_Memory(VOID *memory); /* Supplemental service routines */ STATUS DMS_Allocate_Aligned_Memory(NU_MEMORY_POOL *pool_ptr, VOID **return_pointer, UNSIGNED size, UNSIGNED alignment, UNSIGNED suspend); /* Information retrieval functions. */ UNSIGNED DMF_Established_Memory_Pools(VOID); STATUS DMF_Memory_Pool_Information(NU_MEMORY_POOL *pool_ptr, CHAR *name, VOID **start_address, UNSIGNED *pool_size, UNSIGNED *min_allocation, UNSIGNED *available, OPTION *suspend_type, UNSIGNED *tasks_waiting, NU_TASK **first_task); UNSIGNED DMF_Memory_Pool_Pointers(NU_MEMORY_POOL **pointer_list, UNSIGNED maximum_pointers); #endif
