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| -rw-r--r-- | runtime/wti.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/runtime/wti.h b/runtime/wti.h new file mode 100644 index 0000000..71eed56 --- /dev/null +++ b/runtime/wti.h @@ -0,0 +1,144 @@ +/* Definition of the worker thread instance (wti) class. + * + * Copyright 2008-2017 Adiscon GmbH. + * + * This file is part of the rsyslog runtime library. + * + * 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 + * -or- + * see COPYING.ASL20 in the source distribution + * + * 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. + */ + +#ifndef WTI_H_INCLUDED +#define WTI_H_INCLUDED + +#include <pthread.h> +#include <stdlib.h> +#include "wtp.h" +#include "obj.h" +#include "batch.h" +#include "action.h" + + +#define ACT_STATE_RDY 0 /* action ready, waiting for new transaction */ +#define ACT_STATE_ITX 1 /* transaction active, waiting for new data or commit */ +/* 2 currently not being used */ +#define ACT_STATE_RTRY 3 /* failure occurred, trying to restablish ready state */ +#define ACT_STATE_SUSP 4 /* suspended due to failure (return fail until timeout expired) */ +#define ACT_STATE_DATAFAIL 5 /* suspended due to failure in data, which means the message in + questions needs to be dropped as it will always fail. The + action must still do a "normal" retry in order to bring + it back to regular state. */ +/* note: 3 bit bit field --> highest value is 7! */ + +typedef struct actWrkrInfo { + action_t *pAction; + void *actWrkrData; + uint16_t uResumeOKinRow;/* number of times in a row that resume said OK with an + immediate failure following */ + int iNbrResRtry; /* number of retries since last suspend */ + sbool bHadAutoCommit; /* did an auto-commit happen during doAction()? */ + struct { + unsigned actState : 3; + } flags; + union { + struct { + actWrkrIParams_t *iparams;/* dynamically sized array for transactional outputs */ + int currIParam; + int maxIParams; /* current max */ + } tx; + struct { + actWrkrIParams_t actParams[CONF_OMOD_NUMSTRINGS_MAXSIZE]; + } nontx; + } p; /* short name for "parameters" */ +} actWrkrInfo_t; + +/* the worker thread instance class */ +struct wti_s { + BEGINobjInstance; + pthread_t thrdID; /* thread ID */ + int bIsRunning; /* is this thread currently running? (must be int for atomic op!) */ + sbool bAlwaysRunning; /* should this thread always run? */ + int *pbShutdownImmediate;/* end processing of this batch immediately if set to 1 */ + wtp_t *pWtp; /* my worker thread pool (important if only the work thread instance is passed! */ + batch_t batch; /* pointer to an object array meaningful for current user + pointer (e.g. queue pUsr data elemt) */ + uchar *pszDbgHdr; /* header string for debug messages */ + actWrkrInfo_t *actWrkrInfo; /* *array* of action wrkr infos for all actions + (sized for max nbr of actions in config!) */ + pthread_cond_t pcondBusy; /* condition to wake up the worker, protected by pmutUsr in wtp */ + DEF_ATOMIC_HELPER_MUT(mutIsRunning) + struct { + uint8_t script_errno; /* errno-type interface for RainerScript functions */ + uint8_t bPrevWasSuspended; + uint8_t bDoAutoCommit; /* do a commit after each message + * this is usually set for batches with 0 element, but may + * also be added as a user-selectable option (not implemented yet) + */ + } execState; /* state for the execution engine */ +}; + + +/* prototypes */ +rsRetVal wtiConstruct(wti_t **ppThis); +rsRetVal wtiConstructFinalize(wti_t * const pThis); +rsRetVal wtiDestruct(wti_t **ppThis); +rsRetVal wtiWorker(wti_t * const pThis); +rsRetVal wtiSetDbgHdr(wti_t * const pThis, uchar *pszMsg, size_t lenMsg); +uchar * ATTR_NONNULL() wtiGetDbgHdr(const wti_t *const pThis); +rsRetVal wtiCancelThrd(wti_t * const pThis, const uchar *const cancelobj); +void ATTR_NONNULL() wtiJoinThrd(wti_t *const pThis); +rsRetVal wtiSetAlwaysRunning(wti_t * const pThis); +rsRetVal wtiSetState(wti_t * const pThis, int bNew); +rsRetVal wtiWakeupThrd(wti_t * const pThis); +int wtiGetState(wti_t * const pThis); +wti_t *wtiGetDummy(void); +int ATTR_NONNULL() wtiWaitNonEmpty(wti_t *const pThis, const struct timespec timeout); +PROTOTYPEObjClassInit(wti); +PROTOTYPEObjClassExit(wti); +PROTOTYPEpropSetMeth(wti, pszDbgHdr, uchar*); +PROTOTYPEpropSetMeth(wti, pWtp, wtp_t*); + +#define getActionStateByNbr(pWti, iActNbr) ((uint8_t) ((pWti)->actWrkrInfo[(iActNbr)].flags.actState)) +#define getActionState(pWti, pAction) (((uint8_t) (pWti)->actWrkrInfo[(pAction)->iActionNbr].flags.actState)) +#define setActionState(pWti, pAction, newState) ((pWti)->actWrkrInfo[(pAction)->iActionNbr].flags.actState = \ +(newState)) +#define getActionResumeInRow(pWti, pAction) (((pWti)->actWrkrInfo[(pAction)->iActionNbr].uResumeOKinRow)) +#define setActionResumeInRow(pWti, pAction, val) ((pWti)->actWrkrInfo[(pAction)->iActionNbr].uResumeOKinRow = (val)) +#define incActionResumeInRow(pWti, pAction) ((pWti)->actWrkrInfo[(pAction)->iActionNbr].uResumeOKinRow++) +#define getActionNbrResRtry(pWti, pAction) (((pWti)->actWrkrInfo[(pAction)->iActionNbr].iNbrResRtry)) +#define setActionNbrResRtry(pWti, pAction, val) ((pWti)->actWrkrInfo[(pAction)->iActionNbr].iNbrResRtry = (val)) +#define incActionNbrResRtry(pWti, pAction) ((pWti)->actWrkrInfo[(pAction)->iActionNbr].iNbrResRtry++) +#define wtiInitIParam(piparams) (memset((piparams), 0, sizeof(actWrkrIParams_t))) + +#define wtiGetScriptErrno(pWti) ((pWti)->execState.script_errno) +#define wtiSetScriptErrno(pWti, newval) (pWti)->execState.script_errno = (newval) + +static inline uint8_t ATTR_UNUSED ATTR_NONNULL(1) +wtiGetPrevWasSuspended(const wti_t * const pWti) +{ + assert(pWti != NULL); + return pWti->execState.bPrevWasSuspended; +} + +static inline void __attribute__((unused)) +wtiResetExecState(wti_t * const pWti, batch_t * const pBatch) +{ + wtiSetScriptErrno(pWti, 0); + pWti->execState.bPrevWasSuspended = 0; + pWti->execState.bDoAutoCommit = (batchNumMsgs(pBatch) == 1); +} + + +rsRetVal wtiNewIParam(wti_t *const pWti, action_t *const pAction, actWrkrIParams_t **piparams); +#endif /* #ifndef WTI_H_INCLUDED */ |