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view src/nucleus/mbce.c @ 19:399779c700da
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| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Fri, 15 May 2020 05:59:55 +0000 |
| parents | 92470e5d0b9e |
| 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 */ /* */ /* mbce.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* MB - Mailbox Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains the error checking routines for the core */ /* functions in the Mailbox component. This permits easy removal */ /* of error checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* MBCE_Create_Mailbox Create a mailbox */ /* MBCE_Delete_Mailbox Delete a mailbox */ /* MBCE_Send_To_Mailbox Send a mailbox message */ /* MBCE_Receive_From_Mailbox Receive a mailbox message */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* mb_extr.h Mailbox functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Created new file that contains */ /* error checking shells for core */ /* mailbox functions, also */ /* changed interface to exactly */ /* match prototype, 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 */ /* 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 */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBCE_Create_Mailbox */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the mailbox create function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* MBC_Create_Mailbox Actual create mailbox funct. */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Mailbox control block pointer*/ /* name Mailbox name */ /* suspend_type Suspension type */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_MAILBOX Mailbox pointer is NULL */ /* NU_INVALID_SUSPEND Suspension type is invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified interface to exactly */ /* match prototype, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS MBCE_Create_Mailbox(NU_MAILBOX *mailbox_ptr, CHAR *name, OPTION suspend_type) { MB_MCB *mailbox; /* Mailbox control block ptr */ STATUS status; /* Completion status */ /* Move input mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; /* Check for a NULL mailbox pointer or an already created mailbox. */ if ((mailbox == NU_NULL) || (mailbox -> mb_id == MB_MAILBOX_ID)) /* Invalid mailbox control block pointer. */ status = NU_INVALID_MAILBOX; else if ((suspend_type != NU_FIFO) && (suspend_type != NU_PRIORITY)) /* Invalid suspension type. */ status = NU_INVALID_SUSPEND; else /* Call the actual service to create the mailbox. */ status = MBC_Create_Mailbox(mailbox_ptr, name, suspend_type); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBCE_Delete_Mailbox */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the actual delete mailbox function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* MBC_Delete_Mailbox Actual delete mailbox funct. */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Mailbox control block pointer*/ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_MAILBOX Invalid mailbox supplied */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified interface to exactly */ /* match prototype, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS MBCE_Delete_Mailbox(NU_MAILBOX *mailbox_ptr) { MB_MCB *mailbox; /* Mailbox control block ptr */ STATUS status; /* Completion status */ /* Move input mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; /* Determine if the mailbox pointer is valid. */ if ((mailbox) && (mailbox -> mb_id == MB_MAILBOX_ID)) /* Mailbox pointer is valid, call function to delete it. */ status = MBC_Delete_Mailbox(mailbox_ptr); else /* Mailbox pointer is invalid, indicate in completion status. */ status = NU_INVALID_MAILBOX; /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBCE_Send_To_Mailbox */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the send-to-mailbox function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* MBC_Sent_To_Mailbox Actual mailbox send function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Mailbox control block pointer*/ /* message Pointer to message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_MAILBOX Mailbox pointer is invalid */ /* NU_INVALID_POINTER Message pointer is invalid */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified interface to exactly */ /* match prototype, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS MBCE_Send_To_Mailbox(NU_MAILBOX *mailbox_ptr, VOID *message, UNSIGNED suspend) { MB_MCB *mailbox; /* Mailbox control block ptr */ STATUS status; /* Completion status */ /* Move input mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; /* Determine if mailbox pointer is invalid. */ if (mailbox == NU_NULL) /* Mailbox pointer is invalid, indicate in completion status. */ status = NU_INVALID_MAILBOX; else if (mailbox -> mb_id != MB_MAILBOX_ID) /* Mailbox pointer is invalid, indicate in completion status. */ status = NU_INVALID_MAILBOX; else if (message == NU_NULL) /* Message pointer is invalid, indicate in completion status. */ status = NU_INVALID_POINTER; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a task thread. */ status = NU_INVALID_SUSPEND; else /* Parameters are valid, call actual function. */ status = MBC_Send_To_Mailbox(mailbox_ptr, message, suspend); /* Return the completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBCE_Receive_From_Mailbox */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the receive message from mailbox function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* MBC_Receive_From_Mailbox Actual receive function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Mailbox control block pointer*/ /* message Pointer to message to send */ /* suspend Suspension option if empty */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_MAILBOX Mailbox pointer is invalid */ /* NU_INVALID_POINTER Message pointer is invalid */ /* NU_INVALID_SUSPEND Invalid suspend request */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified interface to exactly */ /* match prototype, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS MBCE_Receive_From_Mailbox(NU_MAILBOX *mailbox_ptr, VOID *message, UNSIGNED suspend) { MB_MCB *mailbox; /* Mailbox control block ptr */ STATUS status; /* Completion status */ /* Move input mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; /* Determine if mailbox pointer is invalid. */ if (mailbox == NU_NULL) /* Mailbox pointer is invalid, indicate in completion status. */ status = NU_INVALID_MAILBOX; else if (mailbox -> mb_id != MB_MAILBOX_ID) /* Mailbox pointer is invalid, indicate in completion status. */ status = NU_INVALID_MAILBOX; else if (message == NU_NULL) /* Message pointer is invalid, indicate in completion status. */ status = NU_INVALID_POINTER; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a task thread. */ status = NU_INVALID_SUSPEND; else /* Parameters are valid, call actual function. */ status = MBC_Receive_From_Mailbox(mailbox_ptr, message, suspend); /* Return the completion status. */ return(status); }