FreeCalypso > hg > fc-selenite
view src/nucleus/dmf.c @ 165:2c82c413775f
gcc bootentry.S: SE J100 target support
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 06 Apr 2019 08:49:03 +0000 |
parents | 0f80e1e4dce4 |
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 */ /* */ /* dmf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* DM - Dynamic Memory Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Dynamic */ /* Memory Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* DMF_Established_Memory_Pools Number of dynamic pools */ /* DMF_Memory_Pool_Pointers Build memory pool pointer */ /* list */ /* DMF_Memory_Pool_Information Retrieve memory pool info */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* dm_extr.h Partition functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of partition fact */ /* service file, version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 11-18-1996 Protected Informational service */ /* from NULL Control Block pointers */ /* creating 1.2a. (SPR220) */ /* 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 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "dm_extr.h" /* Dynamic memory functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *DMD_Created_Pools_List; extern UNSIGNED DMD_Total_Pools; extern TC_PROTECT DMD_List_Protect; /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* DMF_Established_Memory_Pools */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* memory pools. Pools previously deleted are no longer */ /* considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* DMD_Total_Pools Number of established */ /* dynamic memory pools */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED DMF_Established_Memory_Pools(VOID) { #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Return the number of established dynamic memory pools. */ return(DMD_Total_Pools); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* DMF_Memory_Pool_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of pool pointers, starting at */ /* the specified location. The number of pool pointers */ /* placed in the list is equivalent to the total number of */ /* pools or the maximum number of pointers specified in the */ /* call. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_Protect Protect created list */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* pointer_list Pointer to the list area */ /* maximum_pointers Maximum number of pointers */ /* */ /* OUTPUTS */ /* */ /* pointers Number of memory pools */ /* placed in the list */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Corrected pointer retrieval */ /* loop, resulting in version 1.0a */ /* 08-09-1993 Verified version 1.0a */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED DMF_Memory_Pool_Pointers(NU_MEMORY_POOL **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each PCB */ UNSIGNED pointers; /* Number of pointers in list*/ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Initialize the number of pointers returned. */ pointers = 0; /* Protect against access to the list of created memory pools. */ TCT_Protect(&DMD_List_Protect); /* Loop until all pool pointers are in the list or until the maximum list size is reached. */ node_ptr = DMD_Created_Pools_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_MEMORY_POOL *) node_ptr; /* Increment the pointers variable. */ pointers++; /* Position the node pointer to the next node. */ node_ptr = node_ptr -> cs_next; /* Determine if the pointer is at the head of the list. */ if (node_ptr == DMD_Created_Pools_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection of the list of created pools. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* DMF_Memory_Pool_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified memory */ /* pool. However, if the supplied memory pool pointer is */ /* invalid, the function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_Protect Protect memory pool */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* pool_ptr Pointer to the memory pool */ /* name Destination for the name */ /* start_address Destination for the starting */ /* memory address of the pool */ /* pool_size Destination for the pool's */ /* total size */ /* min_allocation Destination for the minimum */ /* block allocation size */ /* available Destination for the available*/ /* number of bytes in pool */ /* suspend_type Destination for the type of */ /* suspension */ /* tasks_waiting Destination for the tasks */ /* waiting count */ /* first_task Destination for the pointer */ /* to the first task waiting */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid pool pointer */ /* is supplied */ /* NU_INVALID_POOL If pool pointer invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ 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) { DM_PCB *pool; /* Pool control block ptr */ INT i; /* Working integer variable */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move input pool pointer into internal pointer. */ pool = (DM_PCB *) pool_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this memory pool id is valid. */ if ((pool != NU_NULL) && (pool -> dm_id == DM_DYNAMIC_ID)) { /* Setup protection of the memory pool. */ TCT_Protect(&(pool -> dm_protect)); /* The memory pool pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the memory pool's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = pool -> dm_name[i]; /* Determine the suspension type. */ if (pool -> dm_fifo_suspend) *suspend_type = NU_FIFO; else *suspend_type = NU_PRIORITY; /* Retrieve information directly out of the control structure. */ *start_address = pool -> dm_start_address; *pool_size = pool -> dm_pool_size; *min_allocation = pool -> dm_min_allocation; *available = pool -> dm_available; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = pool -> dm_tasks_waiting; if (pool -> dm_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (pool -> dm_suspension_list) -> dm_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection of the memory pool. */ TCT_Unprotect(); } else /* Indicate that the memory pool pointer is invalid. */ completion = NU_INVALID_POOL; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }