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view src/nucleus/pise.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 */ /* */ /* pise.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* PI - Pipe Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains error checking routines for supplemental */ /* functions of the Pipe component. This permits easy removal of */ /* error checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* PISE_Reset_Pipe Reset a pipe */ /* PISE_Send_To_Front_Of_Pipe Send message to pipe's front */ /* PISE_Broadcast_To_Pipe Broadcast message to pipe */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* pi_extr.h Pipe functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Created initial version 1.1 from */ /* routines originally in core */ /* error checking file */ /* */ /* 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 "pi_extr.h" /* Pipe functions */ /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Reset_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameter supplied */ /* to the pipe reset function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Reset_Pipe Actual reset pipe function */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* */ /* 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 */ /* */ /*************************************************************************/ STATUS PISE_Reset_Pipe(NU_PIPE *pipe_ptr) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else /* All the parameters are okay, call the actual function to reset a pipe. */ status = PIS_Reset_Pipe(pipe_ptr); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Send_To_Front_Of_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the send message to front of pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Send_To_Front_Of_Pipe Actual send to front of pipe */ /* function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* 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 function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PISE_Send_To_Front_Of_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to send a message to a pipe. */ status = PIS_Send_To_Front_Of_Pipe(pipe_ptr, message, size, suspend); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PISE_Broadcast_To_Pipe */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the broadcast message to pipe function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* PIS_Broadcast_To_Pipe Actual broadcast message to */ /* pipe function */ /* TCCE_Suspend_Error Check suspend validity */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pipe control block pointer */ /* message Pointer to message to send */ /* size Size of message to send */ /* suspend Suspension option if full */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_PIPE Invalid pipe pointer */ /* NU_INVALID_POINTER Invalid message pointer */ /* NU_INVALID_SIZE Invalid message size */ /* 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 function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS PISE_Broadcast_To_Pipe(NU_PIPE *pipe_ptr, VOID *message, UNSIGNED size, UNSIGNED suspend) { PI_PCB *pipe; STATUS status; /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; /* Determine if there is an error with the pipe pointer. */ if (pipe == NU_NULL) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (pipe -> pi_id != PI_PIPE_ID) /* Indicate that the pipe pointer is invalid. */ status = NU_INVALID_PIPE; else if (message == NU_NULL) /* Indicate that the pointer to the message is invalid. */ status = NU_INVALID_POINTER; else if (size == 0) /* Indicate that the message size is invalid */ status = NU_INVALID_SIZE; else if ((pipe -> pi_fixed_size) && (size != pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((!pipe -> pi_fixed_size) && (size > pipe -> pi_message_size)) /* Indicate that the message size is invalid. */ status = NU_INVALID_SIZE; else if ((suspend) && (TCCE_Suspend_Error())) /* Indicate that suspension is only valid from a non-task thread. */ status = NU_INVALID_SUSPEND; else /* All the parameters are okay, call the actual function to broadcast a message to a pipe. */ status = PIS_Broadcast_To_Pipe(pipe_ptr, message, size, suspend); /* Return completion status. */ return(status); }