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cfe_sb_api.c
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/*
** GSC-18128-1, "Core Flight Executive Version 6.7"
**
** Copyright (c) 2006-2019 United States Government as represented by
** the Administrator of the National Aeronautics and Space Administration.
** All Rights Reserved.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
/******************************************************************************
** File: cfe_sb_api.c
**
** Purpose:
** This file contains the source code for the SB API's.
**
** Notes: The following 4 terms have been, or are used in the cFS architecture and implementation
**
** StreamId - First 16 bits of CCSDS Space Packet Protocol (SPP) 133.0-B.1c2 Blue Book
** packet primary header. It contains the 3 bit Version Number, 1 bit Packet Type ID,
** 1 bit Secondary Header flag, and 11 bit Application Process ID
** It was used in earlier cFS implementaions and is defined here for historical reference
** It is NOT exposed to user applications.
**
** MsgId - Unique numeric message identifier within a mission namespace. It is used by cFS
** applications to the identify messages for publishing and subscribing
** It is used by the SB API and encoded in a mission defended way in the header of
** all cFS messages.
** It is exposed to all cFS applications
**
** ApId - CCSDS Application Process Id field in the primary header.
** It has default bit mask of 0x07FF and is part of the cFS message Id
** It should not be confused with the cFE Executive Services (ES) term appId which
** identifies the software application/component
** It is NOT exposed to user applications.
**
** MsgIdkey - This is a unique numeric key within a mission namespace that is used with
** cFS software bus internal structures.
** It is algorithmically created in a mission defined way from the MsgId to support
** efficient lookup and mapping implementations
** It is NOT exposed to user applications.
**
** Author: R.McGraw/SSI
** J.Wilmot/NASA
**
******************************************************************************/
/*
** Include Files
*/
#include "common_types.h"
#include "private/cfe_private.h"
#include "cfe_sb_events.h"
#include "cfe_sb_priv.h"
#include "cfe_sb.h"
#include "osapi.h"
#include "cfe_es.h"
#include "cfe_psp.h"
#include "cfe_error.h"
#include <string.h>
/*
* Macro to reflect size of PipeDepthStats Telemetry array -
* this may or may not be the same as CFE_SB_MSG_MAX_PIPES
*/
#define CFE_SB_TLM_PIPEDEPTHSTATS_SIZE (sizeof(CFE_SB.StatTlmMsg.Payload.PipeDepthStats) / sizeof(CFE_SB.StatTlmMsg.Payload.PipeDepthStats[0]))
/*
* Function: CFE_SB_CreatePipe - See API and header file for details
*/
int32 CFE_SB_CreatePipe(CFE_SB_PipeId_t *PipeIdPtr, uint16 Depth, const char *PipeName)
{
uint32 AppId = 0xFFFFFFFF;
uint32 TskId = 0;
uint32 SysQueueId = 0;
int32 Status;
CFE_SB_PipeId_t OriginalPipeIdParamValue = (PipeIdPtr == NULL) ? 0 : (*PipeIdPtr);
CFE_SB_PipeId_t PipeTblIdx;
char AppName[OS_MAX_API_NAME] = {'\0'};
char FullName[(OS_MAX_API_NAME * 2)];
/* get callers AppId */
CFE_ES_GetAppID(&AppId);
/* get callers name */
CFE_ES_GetAppName(AppName, AppId, OS_MAX_API_NAME);
/* Hardcode a NULL terminator, in case rcvd name was too long */
AppName[OS_MAX_API_NAME-1]= '\0';
/* take semaphore to prevent a task switch during this call */
CFE_SB_LockSharedData(__func__,__LINE__);
TskId = OS_TaskGetId();
/* set user's pipe id value to 'invalid' for error cases below */
if(PipeIdPtr != NULL){
*PipeIdPtr = CFE_SB_INVALID_PIPE;
}/* end if */
/* check input parameters */
if((PipeIdPtr == NULL)||(Depth > CFE_PLATFORM_SB_MAX_PIPE_DEPTH)||(Depth == 0)){
CFE_SB.HKTlmMsg.Payload.CreatePipeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_CR_PIPE_BAD_ARG_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"CreatePipeErr:Bad Input Arg:app=%s,ptr=0x%lx,depth=%d,maxdepth=%d",
CFE_SB_GetAppTskName(TskId,FullName),(unsigned long)PipeIdPtr,(int)Depth,CFE_PLATFORM_SB_MAX_PIPE_DEPTH);
return CFE_SB_BAD_ARGUMENT;
}/*end if*/
/* get first available entry in pipe table */
PipeTblIdx = CFE_SB_GetAvailPipeIdx();
/* if pipe table is full, send event and return error */
if(PipeTblIdx == CFE_SB_INVALID_PIPE){
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_MAX_PIPES_MET_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"CreatePipeErr:Max Pipes(%d)In Use.app %s",
CFE_PLATFORM_SB_MAX_PIPES,CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SB_MAX_PIPES_MET;
}/* end if */
/* create the queue */
Status = OS_QueueCreate(&SysQueueId,PipeName,Depth,sizeof(CFE_SB_BufferD_t *),0);
if (Status != OS_SUCCESS) {
CFE_SB_UnlockSharedData(__func__,__LINE__);
/* if OS_QueueCreate() failed because the pipe name passed in was already in use... */
/* let's make sure we don't alter the user's pipe ID data */
switch(Status) {
case OS_ERR_NAME_TAKEN:
CFE_EVS_SendEventWithAppID(CFE_SB_CR_PIPE_NAME_TAKEN_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"CreatePipeErr:OS_QueueCreate failed, name taken (app=%s, name=%s)",
CFE_SB_GetAppTskName(TskId,FullName), PipeName);
*PipeIdPtr = OriginalPipeIdParamValue;
break;
case OS_ERR_NO_FREE_IDS:
CFE_EVS_SendEventWithAppID(CFE_SB_CR_PIPE_NO_FREE_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"CreatePipeErr:OS_QueueCreate failed, no free id's (app=%s)",
CFE_SB_GetAppTskName(TskId,FullName));
break;
default:
CFE_EVS_SendEventWithAppID(CFE_SB_CR_PIPE_ERR_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"CreatePipeErr:OS_QueueCreate returned %d,app %s",
(int)Status,CFE_SB_GetAppTskName(TskId,FullName));
}/* end switch(Status) */
return CFE_SB_PIPE_CR_ERR;
}/* end if */
/* fill in the pipe table fields */
CFE_SB.PipeTbl[PipeTblIdx].InUse = CFE_SB_IN_USE;
CFE_SB.PipeTbl[PipeTblIdx].SysQueueId = SysQueueId;
CFE_SB.PipeTbl[PipeTblIdx].PipeId = PipeTblIdx;
CFE_SB.PipeTbl[PipeTblIdx].QueueDepth = Depth;
CFE_SB.PipeTbl[PipeTblIdx].AppId = AppId;
CFE_SB.PipeTbl[PipeTblIdx].SendErrors = 0;
CFE_SB.PipeTbl[PipeTblIdx].CurrentBuff = NULL;
CFE_SB.PipeTbl[PipeTblIdx].ToTrashBuff = NULL;
strcpy(&CFE_SB.PipeTbl[PipeTblIdx].AppName[0],&AppName[0]);
/* Increment the Pipes in use ctr and if it's > the high water mark,*/
/* adjust the high water mark */
CFE_SB.StatTlmMsg.Payload.PipesInUse++;
if(CFE_SB.StatTlmMsg.Payload.PipesInUse > CFE_SB.StatTlmMsg.Payload.PeakPipesInUse){
CFE_SB.StatTlmMsg.Payload.PeakPipesInUse = CFE_SB.StatTlmMsg.Payload.PipesInUse;
}/* end if */
/* Reset the pipe depth parameters in the statistics pkt */
if (PipeTblIdx < CFE_SB_TLM_PIPEDEPTHSTATS_SIZE)
{
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].PipeId = PipeTblIdx;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].Depth = Depth;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].InUse = 0;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].PeakInUse = 0;
}
/* give the pipe handle to the caller */
*PipeIdPtr = PipeTblIdx;
CFE_SB_UnlockSharedData(__func__,__LINE__);
/* send debug event */
CFE_EVS_SendEventWithAppID(CFE_SB_PIPE_ADDED_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Pipe Created:name %s,id %d,app %s",
PipeName, (int)CFE_SB.PipeTbl[PipeTblIdx].PipeId,
CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SUCCESS;
}/* end CFE_SB_CreatePipe */
/*
* Function: CFE_SB_DeletePipe - See API and header file for details
*/
int32 CFE_SB_DeletePipe(CFE_SB_PipeId_t PipeId)
{
uint32 CallerId = 0xFFFFFFFF;
int32 Status = 0;
/* get the callers Application Id */
CFE_ES_GetAppID(&CallerId);
Status = CFE_SB_DeletePipeFull(PipeId,CallerId);
return Status;
}/* end CFE_SB_DeletePipe */
/******************************************************************************
** Function: CFE_SB_DeletePipeWithAppId()
**
** Purpose:
**
**
** Arguments:
** PipeId - The ID of the pipe to delete.
**
** Return:
** CFE_SUCCESS or cFE Error Code
*/
int32 CFE_SB_DeletePipeWithAppId(CFE_SB_PipeId_t PipeId, uint32 AppId)
{
int32 Status = 0;
Status = CFE_SB_DeletePipeFull(PipeId,AppId);
return Status;
}/* end CFE_SB_DeletePipeWithAppId */
/******************************************************************************
** Function: CFE_SB_DeletePipeFull()
**
** Purpose:
** Will unsubscribe to all routes associated with the given pipe id, then remove
** pipe from the pipe table.
**
** NOTE:This function cannot be called directly, it would not be semaphore protected
**
** Arguments:
** PipeId - The ID of the pipe to delete.
**
** Return:
** CFE_SUCCESS or cFE Error Code
*/
int32 CFE_SB_DeletePipeFull(CFE_SB_PipeId_t PipeId,uint32 AppId)
{
uint8 PipeTblIdx;
int32 RtnFromVal,Stat;
uint32 Owner,i;
uint32 TskId = 0;
CFE_SB_Msg_t *PipeMsgPtr;
CFE_SB_DestinationD_t *DestPtr = NULL;
char FullName[(OS_MAX_API_NAME * 2)];
/* take semaphore to prevent a task switch during this call */
CFE_SB_LockSharedData(__func__,__LINE__);
/* get TaskId of caller for events */
TskId = OS_TaskGetId();
/* check input parameter */
PipeTblIdx = CFE_SB_GetPipeIdx(PipeId);
RtnFromVal = CFE_SB_ValidatePipeId(PipeId);
if((RtnFromVal != CFE_SUCCESS)||(PipeTblIdx == CFE_SB_INVALID_PIPE))
{
CFE_SB.HKTlmMsg.Payload.CreatePipeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_DEL_PIPE_ERR1_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Pipe Delete Error:Bad Argument,PipedId %d,Requestor %s,Idx %d,Stat %d",
(int)PipeId,CFE_SB_GetAppTskName(TskId,FullName),(int)PipeTblIdx,(int)RtnFromVal);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
Owner = CFE_SB.PipeTbl[PipeTblIdx].AppId;
/* check that the given AppId is the owner of the pipe */
if(AppId != Owner){
CFE_SB.HKTlmMsg.Payload.CreatePipeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_DEL_PIPE_ERR2_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Pipe Delete Error:Caller(%s) is not the owner of pipe %d",
CFE_SB_GetAppTskName(TskId,FullName),(int)PipeId);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
/* check destination list of every in-use MsgId, for the given pipeid. */
/* when found, remove the pipe ID from the destination list via 'unsubscribe' */
for(i=0;i<CFE_PLATFORM_SB_MAX_MSG_IDS;i++)
{
if(CFE_SB_IsValidMsgId(CFE_SB.RoutingTbl[i].MsgId))
{
DestPtr = CFE_SB.RoutingTbl[i].ListHeadPtr;
while(DestPtr != NULL){
if(DestPtr -> PipeId == PipeId){
/* release the semaphore, unsubscribe will need to take it */
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_SB_UnsubscribeWithAppId(CFE_SB.RoutingTbl[i].MsgId,
PipeId,AppId);
CFE_SB_LockSharedData(__func__,__LINE__);
}/* end if */
DestPtr = DestPtr -> Next;
}/* end while */
}/* end if */
}/* end for */
if (CFE_SB.PipeTbl[PipeTblIdx].ToTrashBuff != NULL) {
/* Decrement the Buffer Use Count and Free buffer if cnt=0) */
CFE_SB_DecrBufUseCnt(CFE_SB.PipeTbl[PipeTblIdx].ToTrashBuff);
CFE_SB.PipeTbl[PipeTblIdx].ToTrashBuff = NULL;
}/* end if */
/* remove any messages that might be on the pipe */
/* this step will free the memory used to store the message */
do{
CFE_SB_UnlockSharedData(__func__,__LINE__);
Stat = CFE_SB_RcvMsg(&PipeMsgPtr,PipeId,CFE_SB_POLL);
CFE_SB_LockSharedData(__func__,__LINE__);
}while(Stat == CFE_SUCCESS);
/* Delete the underlying OS queue */
OS_QueueDelete(CFE_SB.PipeTbl[PipeTblIdx].SysQueueId);
/* remove the pipe from the pipe table */
CFE_SB.PipeTbl[PipeTblIdx].InUse = CFE_SB_NOT_IN_USE;
CFE_SB.PipeTbl[PipeTblIdx].SysQueueId = CFE_SB_UNUSED_QUEUE;
CFE_SB.PipeTbl[PipeTblIdx].PipeId = CFE_SB_INVALID_PIPE;
CFE_SB.PipeTbl[PipeTblIdx].CurrentBuff = NULL;
/* zero out the pipe depth stats */
if (PipeTblIdx < CFE_SB_TLM_PIPEDEPTHSTATS_SIZE)
{
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].PipeId = 0;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].Depth = 0;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].InUse = 0;
CFE_SB.StatTlmMsg.Payload.PipeDepthStats[PipeTblIdx].PeakInUse = 0;
}
CFE_SB.StatTlmMsg.Payload.PipesInUse--;
CFE_SB_UnlockSharedData(__func__,__LINE__);
/*
* Get the app name of the actual pipe owner for the event string
* as this may be different than the task doing the deletion.
*
* Note: If this fails (e.g. bad AppID, it returns an empty string
*/
CFE_ES_GetAppName(FullName, Owner, sizeof(FullName));
CFE_EVS_SendEventWithAppID(CFE_SB_PIPE_DELETED_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Pipe Deleted:id %d,owner %s",(int)PipeId, FullName);
return CFE_SUCCESS;
}/* end CFE_SB_DeletePipeFull */
/*
* Function: CFE_SB_SetPipeOpts - See API and header file for details
*/
int32 CFE_SB_SetPipeOpts(CFE_SB_PipeId_t PipeId, uint8 Opts)
{
uint8 PipeTblIdx = 0;
int32 RtnFromVal = 0;
uint32 Owner = 0, AppID = 0, TskId = 0, Status = 0;
char FullName[(OS_MAX_API_NAME * 2)];
Status = CFE_ES_GetAppID(&AppID);
if(Status != CFE_SUCCESS)
{
/* shouldn't happen... */
return Status;
}
/* take semaphore to prevent a task switch during this call */
CFE_SB_LockSharedData(__func__,__LINE__);
/* get TaskId of caller for events */
TskId = OS_TaskGetId();
/* check input parameter */
PipeTblIdx = CFE_SB_GetPipeIdx(PipeId);
RtnFromVal = CFE_SB_ValidatePipeId(PipeId);
if((RtnFromVal != CFE_SUCCESS)||(PipeTblIdx == CFE_SB_INVALID_PIPE))
{
CFE_SB.HKTlmMsg.Payload.PipeOptsErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SETPIPEOPTS_ID_ERR_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Pipe Opts Error:Bad Argument,PipedId %d,Requestor %s,Idx %d,Stat %d",
(int)PipeId,CFE_SB_GetAppTskName(TskId,FullName),(int)PipeTblIdx,(int)RtnFromVal);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
/* check that the given AppId is the owner of the pipe */
Owner = CFE_SB.PipeTbl[PipeTblIdx].AppId;
if(AppID != Owner){
CFE_SB.HKTlmMsg.Payload.PipeOptsErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SETPIPEOPTS_OWNER_ERR_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Pipe Opts Set Error: Caller(%s) is not the owner of pipe %d",
CFE_SB_GetAppTskName(TskId,FullName),(int)PipeId);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
CFE_SB.PipeTbl[PipeTblIdx].Opts = Opts;
CFE_SB_UnlockSharedData(__func__,__LINE__);
/*
* Get the app name of the actual pipe owner for the event string
* as this may be different than the task doing the deletion.
*
* Note: If this fails (e.g. bad AppID, it returns an empty string
*/
CFE_ES_GetAppName(FullName, Owner, sizeof(FullName));
CFE_EVS_SendEventWithAppID(CFE_SB_SETPIPEOPTS_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Pipe opts set:id %d,owner %s, opts=0x%02x",(int)PipeId, FullName, (unsigned int)Opts);
return CFE_SUCCESS;
}/* end CFE_SB_SetPipeOpts */
/*
* Function: CFE_SB_GetPipeOpts - See API and header file for details
*/
int32 CFE_SB_GetPipeOpts(CFE_SB_PipeId_t PipeId, uint8 *OptsPtr)
{
uint8 PipeTblIdx = 0;
int32 RtnFromVal = 0;
uint32 TskId = 0;
char FullName[(OS_MAX_API_NAME * 2)];
if(OptsPtr == NULL)
{
CFE_SB.HKTlmMsg.Payload.PipeOptsErrorCounter++;
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEOPTS_PTR_ERR_EID, CFE_EVS_EventType_ERROR, CFE_SB.AppId,
"Pipe Opts Error:Bad Argument,Requestor %s",
CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SB_BAD_ARGUMENT;
}
/* take semaphore to prevent a task switch during this call */
CFE_SB_LockSharedData(__func__,__LINE__);
/* get TaskId of caller for events */
TskId = OS_TaskGetId();
/* check input parameter */
PipeTblIdx = CFE_SB_GetPipeIdx(PipeId);
RtnFromVal = CFE_SB_ValidatePipeId(PipeId);
if((RtnFromVal != CFE_SUCCESS)||(PipeTblIdx == CFE_SB_INVALID_PIPE))
{
CFE_SB.HKTlmMsg.Payload.PipeOptsErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEOPTS_ID_ERR_EID, CFE_EVS_EventType_ERROR, CFE_SB.AppId,
"Pipe Opts Error:Bad Argument,PipedId %d,Requestor %s,Idx %d,Stat %d",
(int)PipeId,CFE_SB_GetAppTskName(TskId,FullName),(int)PipeTblIdx,(int)RtnFromVal);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
*OptsPtr = CFE_SB.PipeTbl[PipeTblIdx].Opts;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEOPTS_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Pipe opts set:id %d, opts=0x%02x",(int)PipeId, (unsigned int)*OptsPtr);
return CFE_SUCCESS;
}/* end CFE_SB_GetPipeOpts */
/*
* Function: CFE_SB_GetPipeName - See API and header file for details
*/
int32 CFE_SB_GetPipeName(char *PipeNameBuf, size_t PipeNameSize, CFE_SB_PipeId_t PipeId){
OS_queue_prop_t queue_prop;
int32 Status = CFE_SUCCESS;
uint32 TskId = 0;
char FullName[(OS_MAX_API_NAME * 2)];
if(PipeNameBuf == NULL || PipeNameSize == 0) {
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPENAME_NULL_PTR_EID, CFE_EVS_EventType_ERROR,
CFE_SB.AppId, "Pipe Name Error:NullPtr,Requestor %s",
CFE_SB_GetAppTskName(TskId,FullName));
Status = CFE_SB_BAD_ARGUMENT;
} else if(PipeId >= CFE_PLATFORM_SB_MAX_PIPES){
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPENAME_ID_ERR_EID, CFE_EVS_EventType_ERROR,
CFE_SB.AppId, "Pipe Id Error:Bad Argument,Id=%d,Requestor %s",
PipeId,CFE_SB_GetAppTskName(TskId,FullName));
memset(PipeNameBuf, 0, PipeNameSize);
Status = CFE_SB_BAD_ARGUMENT;
}else{
if (OS_QueueGetInfo(CFE_SB.PipeTbl[PipeId].SysQueueId, &queue_prop)
== OS_SUCCESS){
strncpy(PipeNameBuf, queue_prop.name, PipeNameSize-1);
PipeNameBuf[PipeNameSize-1] = '\0';
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPENAME_EID,
CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"GetPipeName name=%s id=%d",
PipeNameBuf, PipeId);
} else{
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPENAME_ID_ERR_EID, CFE_EVS_EventType_ERROR,
CFE_SB.AppId, "Pipe Id Error:Bad Argument,Id=%d,Requestor %s",
PipeId,CFE_SB_GetAppTskName(TskId,FullName));
memset(PipeNameBuf, 0, PipeNameSize);
Status = CFE_SB_BAD_ARGUMENT;
}/* end if */
}/* end if */
return Status;
}/* end CFE_SB_GetPipeName */
/*
* Function: CFE_SB_GetPipeIdByName - See API and header file for details
*/
int32 CFE_SB_GetPipeIdByName(CFE_SB_PipeId_t *PipeIdPtr, const char *PipeName)
{
uint8 PipeTblIdx = 0;
int32 Status = CFE_SUCCESS;
int32 RtnFromVal = 0;
uint32 TskId = 0;
uint32 QueueId = 0;
char FullName[(OS_MAX_API_NAME * 2)];
if(PipeName == NULL || PipeIdPtr == NULL)
{
CFE_SB.HKTlmMsg.Payload.GetPipeIdByNameErrorCounter++;
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEIDBYNAME_NULL_ERR_EID, CFE_EVS_EventType_ERROR, CFE_SB.AppId,
"Pipe ID By Name Error:Bad Argument,Requestor %s",
CFE_SB_GetAppTskName(TskId,FullName));
Status = CFE_SB_BAD_ARGUMENT;
}
else
{
/* get TaskId of caller for events */
TskId = OS_TaskGetId();
RtnFromVal = OS_QueueGetIdByName(&QueueId, PipeName);
if(RtnFromVal == OS_SUCCESS)
{
/* take semaphore to prevent a task switch while iterating
* through the PipeTbl.
*/
CFE_SB_LockSharedData(__func__,__LINE__);
for(PipeTblIdx = 0;
PipeTblIdx < CFE_PLATFORM_SB_MAX_PIPES;
PipeTblIdx++)
{
if(CFE_SB.PipeTbl[PipeTblIdx].InUse != 0
&& CFE_SB.PipeTbl[PipeTblIdx].SysQueueId == QueueId)
{
/* grab the ID before we release the lock */
*PipeIdPtr = CFE_SB.PipeTbl[PipeTblIdx].PipeId;
break;
}/* end if */
}/* end for */
CFE_SB_UnlockSharedData(__func__,__LINE__);
if(PipeTblIdx == CFE_PLATFORM_SB_MAX_PIPES)
{
/* should never get here! */
CFE_SB.HKTlmMsg.Payload.GetPipeIdByNameErrorCounter++;
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEIDBYNAME_NAME_ERR_EID,
CFE_EVS_EventType_ERROR, CFE_SB.AppId,
"Pipe ID By Name Error:Bad Argument,Requestor %s",
CFE_SB_GetAppTskName(TskId,FullName));
Status = CFE_SB_BAD_ARGUMENT;
}
else
{
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEIDBYNAME_EID,
CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"PipeIdByName name=%s id=%d",
PipeName, *PipeIdPtr);
Status = CFE_SUCCESS;
}
}
else
{
CFE_SB.HKTlmMsg.Payload.GetPipeIdByNameErrorCounter++;
CFE_EVS_SendEventWithAppID(CFE_SB_GETPIPEIDBYNAME_NAME_ERR_EID,
CFE_EVS_EventType_ERROR, CFE_SB.AppId,
"Pipe ID By Name Error:Bad Argument,Requestor %s",
CFE_SB_GetAppTskName(TskId,FullName));
Status = CFE_SB_BAD_ARGUMENT;
}/* end if */
}/* end if */
return Status;
}/* end CFE_SB_GetPipeIdByName */
/*
* Function: CFE_SB_SubscribeEx - See API and header file for details
*/
int32 CFE_SB_SubscribeEx(CFE_SB_MsgId_t MsgId,
CFE_SB_PipeId_t PipeId,
CFE_SB_Qos_t Quality,
uint16 MsgLim)
{
return CFE_SB_SubscribeFull(MsgId,PipeId,Quality,MsgLim,(uint8)CFE_SB_GLOBAL);
}/* end CFE_SB_SubscribeEx */
/*
* Function: CFE_SB_SubscribeLocal - See API and header file for details
*/
int32 CFE_SB_SubscribeLocal(CFE_SB_MsgId_t MsgId,
CFE_SB_PipeId_t PipeId,
uint16 MsgLim)
{
return CFE_SB_SubscribeFull(MsgId,PipeId,CFE_SB_Default_Qos,MsgLim,
(uint8)CFE_SB_LOCAL);
}/* end CFE_SB_SubscribeLocal */
/*
* Function: CFE_SB_Subscribe - See API and header file for details
*/
int32 CFE_SB_Subscribe(CFE_SB_MsgId_t MsgId,
CFE_SB_PipeId_t PipeId)
{
return CFE_SB_SubscribeFull(MsgId,PipeId,CFE_SB_Default_Qos,
(uint16)CFE_PLATFORM_SB_DEFAULT_MSG_LIMIT,
(uint8)CFE_SB_GLOBAL);
}/* end CFE_SB_Subscribe */
/******************************************************************************
** Name: CFE_SB_SubscribeFull
**
** Purpose: CFE Internal API used to subscribe to a message. Contains an input
** parameter for all possible subscription choices. This function is
** called by CFE_SB_SubscribeEx, CFE_SB_Subscribe and
** CFE_SB_SubscribeLocal.
**
** Assumptions, External Events, and Notes:
** Has the same typedef as the message Id
**
** Date Written:
** 04/25/2005
**
** Input Arguments:
** MsgId - Mission unique identifier for the message being requested
** PipeId - The Pipe ID to send the message to
** Quality - Quality of Service (Qos) - priority and reliability
** MsgLim - Max number of messages, with this MsgId, allowed on the
** pipe at any time.
** Scope - Local subscription or broadcasted to peers
**
** Output Arguments:
** None
**
** Return Values:
** Status
**
******************************************************************************/
int32 CFE_SB_SubscribeFull(CFE_SB_MsgId_t MsgId,
CFE_SB_PipeId_t PipeId,
CFE_SB_Qos_t Quality,
uint16 MsgLim,
uint8 Scope)
{
CFE_SB_MsgRouteIdx_t RouteIdx;
CFE_SB_RouteEntry_t* RoutePtr;
int32 Stat;
CFE_SB_MsgKey_t MsgKey;
uint32 TskId = 0;
uint32 AppId = 0xFFFFFFFF;
uint8 PipeIdx;
CFE_SB_DestinationD_t *DestBlkPtr = NULL;
char FullName[(OS_MAX_API_NAME * 2)];
char PipeName[OS_MAX_API_NAME] = {'\0'};
CFE_SB_GetPipeName(PipeName, sizeof(PipeName), PipeId);
/* take semaphore to prevent a task switch during this call */
CFE_SB_LockSharedData(__func__,__LINE__);
/* get task id for events */
TskId = OS_TaskGetId();
/* get the callers Application Id */
CFE_ES_GetAppID(&AppId);
/* check that the pipe has been created */
PipeIdx = CFE_SB_GetPipeIdx(PipeId);
if(PipeIdx==CFE_SB_INVALID_PIPE){
CFE_SB.HKTlmMsg.Payload.SubscribeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SUB_INV_PIPE_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Invalid Pipe Id,Msg=0x%x,PipeId=%d,App %s",(unsigned int)CFE_SB_MsgIdToValue(MsgId),
(int)PipeId, CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SB_BAD_ARGUMENT;
}/* end if */
/* check that the requestor is the owner of the pipe */
if(CFE_SB.PipeTbl[PipeIdx].AppId != AppId){
CFE_SB.HKTlmMsg.Payload.SubscribeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SUB_INV_CALLER_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Caller(%s) is not the owner of pipe %d,Msg=0x%x",
CFE_SB_GetAppTskName(TskId,FullName),(int)PipeId,(unsigned int)CFE_SB_MsgIdToValue(MsgId));
return CFE_SB_BAD_ARGUMENT;
}/* end if */
/* check message id key and scope */
if(!CFE_SB_IsValidMsgId(MsgId) || (Scope > 1))
{
CFE_SB.HKTlmMsg.Payload.SubscribeErrorCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SUB_ARG_ERR_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Bad Arg,MsgId 0x%x,PipeId %d,app %s,scope %d",
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
(int)PipeId,CFE_SB_GetAppTskName(TskId,FullName),Scope);
return CFE_SB_BAD_ARGUMENT;
}/* end if */
/* Convert the API MsgId into the SB internal representation MsgKey */
MsgKey = CFE_SB_ConvertMsgIdtoMsgKey(MsgId);
/* check for duplicate subscription */
if(CFE_SB_DuplicateSubscribeCheck(MsgKey,PipeId)==CFE_SB_DUPLICATE){
CFE_SB.HKTlmMsg.Payload.DuplicateSubscriptionsCounter++;
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_DUP_SUBSCRIP_EID,CFE_EVS_EventType_INFORMATION,CFE_SB.AppId,
"Duplicate Subscription,MsgId 0x%x on %s pipe,app %s",
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
PipeName,CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SUCCESS;
}/* end if */
/*
** If there has been a subscription for this message id earlier,
** get the element number in the routing table.
*/
RouteIdx = CFE_SB_GetRoutingTblIdx(MsgKey);
/* if not first subscription for this message KEY ... */
if(CFE_SB_IsValidRouteIdx(RouteIdx))
{
RoutePtr = CFE_SB_GetRoutePtrFromIdx(RouteIdx);
/*
* FIXME: If a hash or other conversion is used between MsgId and MsgKey,
* then it is possible that this existing route is for a different MsgId.
*
* The MsgId should be checked against the "MsgId" in the route here.
*
* However it is not possible to have a mismatch in the default case where
* MsgKey == MsgId
*/
}
else
{
/* Get the index to the first available element in the routing table */
RouteIdx = CFE_SB_RouteIdxPop_Unsync();
/* if all routing table elements are used, send event */
if(!CFE_SB_IsValidRouteIdx(RouteIdx)){
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_MAX_MSGS_MET_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Max Msgs(%d)In Use,MsgId 0x%x,pipe %s,app %s",
CFE_PLATFORM_SB_MAX_MSG_IDS,
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
PipeName,CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SB_MAX_MSGS_MET;
}/* end if */
/* Increment the MsgIds in use ctr and if it's > the high water mark,*/
/* adjust the high water mark */
CFE_SB.StatTlmMsg.Payload.MsgIdsInUse++;
if(CFE_SB.StatTlmMsg.Payload.MsgIdsInUse > CFE_SB.StatTlmMsg.Payload.PeakMsgIdsInUse){
CFE_SB.StatTlmMsg.Payload.PeakMsgIdsInUse = CFE_SB.StatTlmMsg.Payload.MsgIdsInUse;
}/* end if */
/* populate the look up table with the routing table index */
CFE_SB_SetRoutingTblIdx(MsgKey,RouteIdx);
/* label the new routing block with the message identifier */
RoutePtr = CFE_SB_GetRoutePtrFromIdx(RouteIdx);
RoutePtr->MsgId = MsgId;
}/* end if */
if(RoutePtr->Destinations >= CFE_PLATFORM_SB_MAX_DEST_PER_PKT){
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_MAX_DESTS_MET_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Max Dests(%d)In Use For Msg 0x%x,pipe %s,app %s",
CFE_PLATFORM_SB_MAX_DEST_PER_PKT,
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
PipeName, CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SB_MAX_DESTS_MET;
}/* end if */
DestBlkPtr = CFE_SB_GetDestinationBlk();
if(DestBlkPtr == NULL){
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_DEST_BLK_ERR_EID,CFE_EVS_EventType_ERROR,CFE_SB.AppId,
"Subscribe Err:Request for Destination Blk failed for Msg 0x%x",
(unsigned int)CFE_SB_MsgIdToValue(MsgId));
return CFE_SB_BUF_ALOC_ERR;
}/* end if */
/* initialize destination block */
DestBlkPtr -> PipeId = PipeId;
DestBlkPtr -> MsgId2PipeLim = (uint16)MsgLim;
DestBlkPtr -> Active = CFE_SB_ACTIVE;
DestBlkPtr -> BuffCount = 0;
DestBlkPtr -> DestCnt = 0;
DestBlkPtr -> Scope = Scope;
DestBlkPtr -> Prev = NULL;
DestBlkPtr -> Next = NULL;
/* add destination block to head of list */
CFE_SB_AddDest(RoutePtr, DestBlkPtr);
RoutePtr->Destinations++;
CFE_SB.StatTlmMsg.Payload.SubscriptionsInUse++;
if(CFE_SB.StatTlmMsg.Payload.SubscriptionsInUse > CFE_SB.StatTlmMsg.Payload.PeakSubscriptionsInUse)
{
CFE_SB.StatTlmMsg.Payload.PeakSubscriptionsInUse = CFE_SB.StatTlmMsg.Payload.SubscriptionsInUse;
}/* end if */
if((CFE_SB.SubscriptionReporting == CFE_SB_ENABLE)&&(Scope==CFE_SB_GLOBAL)){
CFE_SB.SubRprtMsg.Payload.MsgId = MsgId;
CFE_SB.SubRprtMsg.Payload.Pipe = PipeId;
CFE_SB.SubRprtMsg.Payload.Qos.Priority = Quality.Priority;
CFE_SB.SubRprtMsg.Payload.Qos.Reliability = Quality.Reliability;
CFE_SB.SubRprtMsg.Payload.SubType = CFE_SB_SUBSCRIPTION;
CFE_SB_UnlockSharedData(__func__,__LINE__);
Stat = CFE_SB_SendMsg((CFE_SB_Msg_t *)&CFE_SB.SubRprtMsg);
CFE_EVS_SendEventWithAppID(CFE_SB_SUBSCRIPTION_RPT_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Sending Subscription Report Msg=0x%x,Pipe=%d,Stat=0x%x",
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
(int)PipeId,(unsigned int)Stat);
CFE_SB_LockSharedData(__func__,__LINE__);/* to prevent back-to-back unlock */
}/* end if */
/* release the semaphore */
CFE_SB_UnlockSharedData(__func__,__LINE__);
CFE_EVS_SendEventWithAppID(CFE_SB_SUBSCRIPTION_RCVD_EID,CFE_EVS_EventType_DEBUG,CFE_SB.AppId,
"Subscription Rcvd:MsgId 0x%x on %s(%d),app %s",
(unsigned int)CFE_SB_MsgIdToValue(MsgId),
PipeName,(int)PipeId,CFE_SB_GetAppTskName(TskId,FullName));
return CFE_SUCCESS;
}/* end CFE_SB_SubscribeFull */
/*
* Function: CFE_SB_Unsubscribe - See API and header file for details
*/
int32 CFE_SB_Unsubscribe(CFE_SB_MsgId_t MsgId, CFE_SB_PipeId_t PipeId)
{
uint32 CallerId = 0xFFFFFFFF;
int32 Status = 0;
/* get the callers Application Id */
CFE_ES_GetAppID(&CallerId);
Status = CFE_SB_UnsubscribeFull(MsgId, PipeId, (uint8)CFE_SB_GLOBAL,CallerId);
return Status;
}/* end CFE_SB_Unsubscribe */
/*
* Function: CFE_SB_UnsubscribeLocal - See API and header file for details
*/
int32 CFE_SB_UnsubscribeLocal(CFE_SB_MsgId_t MsgId, CFE_SB_PipeId_t PipeId)
{
uint32 CallerId = 0xFFFFFFFF;
int32 Status = 0;
/* get the callers Application Id */
CFE_ES_GetAppID(&CallerId);
Status = CFE_SB_UnsubscribeFull(MsgId, PipeId, (uint8)CFE_SB_LOCAL,CallerId);
return Status;
}/* end CFE_SB_UnsubscribeLocal */
/******************************************************************************
** Name: CFE_SB_UnsubscribeAppId
**
** Purpose: CFE Internal API intented to be called by CFE_ES when an applications
** SB resources need to be freed. The regular unsibscribe api won't work
** because it does a check to ensure the caller is the owner of the pipe.
**
** Date Written:
** 03/15/2007
**
** Input Arguments:
** MsgId
** PipeId
** AppId
**
** Output Arguments:
** None
**
** Return Values:
** Status
**
******************************************************************************/
int32 CFE_SB_UnsubscribeWithAppId(CFE_SB_MsgId_t MsgId,
CFE_SB_PipeId_t PipeId,
uint32 AppId)
{
int32 Status = 0;
Status = CFE_SB_UnsubscribeFull(MsgId, PipeId, (uint8)CFE_SB_LOCAL, AppId);
return Status;
}/* end CFE_SB_UnsubscribeWithAppId */
/******************************************************************************
** Name: CFE_SB_UnsubscribeFull
**
** Purpose: CFE Internal API used to unsubscribe to a message.
**
** Assumptions, External Events, and Notes:
**
**
** Notes:This function cannot be called directly,it would not be semaphore protected.
** Also,if more than one subscription is found, this function will remove all
** entries that match.
**
** Date Written:
** 04/25/2005
**
** Input Arguments:
** MsgId
** PipeId
** Scope
** AppId
**
** Output Arguments:
** None