FreeCalypso > hg > fc-tourmaline
view src/nucleus/mbf.c @ 172:44d6af34c75a
mmiSmsMenu.c: formatting fixes and dead code elimination
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 18 Jan 2021 02:33:57 +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 */ /* */ /* mbf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* MB - Mailbox Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Mailbox */ /* management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* MBF_Established_Mailboxes Number of created mailboxes */ /* MBF_Mailbox_Pointers Build mailbox pointer list */ /* MBF_Mailbox_Information Retrieve mailbox information */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* mb_extr.h Mailbox functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of mailbox 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 "mb_extr.h" /* Mailbox functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *MBD_Created_Mailboxes_List; extern UNSIGNED MBD_Total_Mailboxes; extern TC_PROTECT MBD_List_Protect; /* Define internal component function prototypes. */ VOID MBC_Cleanup(VOID *information); /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Established_Mailboxes */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* mailboxes. Mailboxes previously deleted are no longer */ /* considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* MBD_Total_Mailboxes Number of established */ /* mailboxes */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ UNSIGNED MBF_Established_Mailboxes(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 mailboxes. */ return(MBD_Total_Mailboxes); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Mailbox_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of mailbox pointers, starting at the */ /* specified location. The number of mailbox pointers placed in */ /* the list is equivalent to the total number of mailboxes 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 mailboxes 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 Changed function interface to */ /* match the prototype, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED MBF_Mailbox_Pointers(NU_MAILBOX **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each MCB */ 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 mailboxes. */ TCT_Protect(&MBD_List_Protect); /* Loop until all mailbox pointers are in the list or until the maximum list size is reached. */ node_ptr = MBD_Created_Mailboxes_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_MAILBOX *) 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 == MBD_Created_Mailboxes_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection against access to the list of created mailboxes. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Mailbox_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified mailbox. */ /* However, if the supplied mailbox pointer is invalid, the */ /* function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect mailbox */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Pointer to the mailbox */ /* name Destination for the name */ /* suspend_type Destination for the type of */ /* suspension */ /* message_present Destination for the message */ /* present flag */ /* 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 mailbox pointer */ /* is supplied */ /* NU_INVALID_MAILBOX If mailbox pointer invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Changed function interface to */ /* match the prototype, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS MBF_Mailbox_Information(NU_MAILBOX *mailbox_ptr, CHAR *name, OPTION *suspend_type, DATA_ELEMENT *message_present, UNSIGNED *tasks_waiting, NU_TASK **first_task) { MB_MCB *mailbox; /* Mailbox 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 mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this mailbox id is valid. */ if ((mailbox != NU_NULL) && (mailbox -> mb_id == MB_MAILBOX_ID)) { /* Setup protection of the mailbox. */ TCT_System_Protect(); /* The mailbox pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the mailbox's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = mailbox -> mb_name[i]; /* Determine the suspension type. */ if (mailbox -> mb_fifo_suspend) *suspend_type = NU_FIFO; else *suspend_type = NU_PRIORITY; /* Indicate whether or not there is a message in the mailbox. */ *message_present = mailbox -> mb_message_present; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = mailbox -> mb_tasks_waiting; if (mailbox -> mb_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (mailbox -> mb_suspension_list) -> mb_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection. */ TCT_Unprotect(); } else /* Indicate that the mailbox pointer is invalid. */ completion = NU_INVALID_MAILBOX; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }