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Diffstat (limited to 'runtime/vmprg.c')
| -rw-r--r-- | runtime/vmprg.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/runtime/vmprg.c b/runtime/vmprg.c deleted file mode 100644 index c73f8919..00000000 --- a/runtime/vmprg.c +++ /dev/null @@ -1,234 +0,0 @@ -/* vmprg.c - abstracts a program (bytecode) for the rsyslog virtual machine - * - * Module begun 2008-02-20 by Rainer Gerhards - * - * Copyright 2007-2012 Rainer Gerhards and 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. - */ - -#include "config.h" -#include <stdio.h> -#include <stdlib.h> -#include <assert.h> - -#include "rsyslog.h" -#include "obj.h" -#include "vmprg.h" -#include "stringbuf.h" - -/* static data */ -DEFobjStaticHelpers -DEFobjCurrIf(vmop) - - -/* Standard-Constructor - */ -BEGINobjConstruct(vmprg) /* be sure to specify the object type also in END macro! */ -ENDobjConstruct(vmprg) - - -/* ConstructionFinalizer - * rgerhards, 2008-01-09 - */ -static rsRetVal -vmprgConstructFinalize(vmprg_t __attribute__((unused)) *pThis) -{ - DEFiRet; - ISOBJ_TYPE_assert(pThis, vmprg); - RETiRet; -} - - -/* destructor for the vmprg object */ -BEGINobjDestruct(vmprg) /* be sure to specify the object type also in END and CODESTART macros! */ - vmop_t *pOp; - vmop_t *pTmp; -CODESTARTobjDestruct(vmprg) - /* we need to destruct the program elements! */ - for(pOp = pThis->vmopRoot ; pOp != NULL ; ) { - pTmp = pOp; - pOp = pOp->pNext; - vmop.Destruct(&pTmp); - } -ENDobjDestruct(vmprg) - - -/* destructor for the vmop object */ -BEGINobjDebugPrint(vmprg) /* be sure to specify the object type also in END and CODESTART macros! */ - vmop_t *pOp; -CODESTARTobjDebugPrint(vmprg) - dbgoprint((obj_t*) pThis, "VM Program:\n"); - for(pOp = pThis->vmopRoot ; pOp != NULL ; pOp = pOp->pNext) { - vmop.DebugPrint(pOp); - } -ENDobjDebugPrint(vmprg) - - -/* This function is similar to DebugPrint, but does not send its output to - * the debug log but instead to a caller-provided string. The idea here is that - * we can use this string to get a textual representation of a bytecode program. - * Among others, this is useful for creating testbenches, our first use case for - * it. Here, it enables simple comparison of the resulting program to a - * reference program by simple string compare. - * Note that the caller must initialize the string object. We always add - * data to it. So, it can be easily combined into a chain of methods - * to generate the final string. - * rgerhards, 2008-07-04 - */ -static rsRetVal -Obj2Str(vmprg_t *pThis, cstr_t *pstrPrg) -{ - uchar szAddr[12]; - vmop_t *pOp; - int i; - int lenAddr; - DEFiRet; - - ISOBJ_TYPE_assert(pThis, vmprg); - assert(pstrPrg != NULL); - i = 0; /* "program counter" */ - for(pOp = pThis->vmopRoot ; pOp != NULL ; pOp = pOp->pNext) { - lenAddr = snprintf((char*)szAddr, sizeof(szAddr), "%8.8d: ", i++); - CHKiRet(rsCStrAppendStrWithLen(pstrPrg, szAddr, lenAddr)); - vmop.Obj2Str(pOp, pstrPrg); - } - -finalize_it: - RETiRet; -} - - -/* add an operation (instruction) to the end of the current program. This - * function is expected to be called while creating the program, but never - * again after this is done and it is being executed. Results are undefined if - * it is called after execution. - */ -static rsRetVal -vmprgAddOperation(vmprg_t *pThis, vmop_t *pOp) -{ - DEFiRet; - - ISOBJ_TYPE_assert(pThis, vmprg); - ISOBJ_TYPE_assert(pOp, vmop); - - if(pThis->vmopRoot == NULL) { - pThis->vmopRoot = pOp; - } else { - pThis->vmopLast->pNext = pOp; - } - pThis->vmopLast = pOp; - - RETiRet; -} - - -/* this is a shortcut for high-level callers. It creates a new vmop, sets its - * parameters and adds it to the program - all in one big step. If there is no - * var associated with this operation, the caller can simply supply NULL as - * pVar. - */ -static rsRetVal -vmprgAddVarOperation(vmprg_t *pThis, opcode_t opcode, var_t *pVar) -{ - DEFiRet; - vmop_t *pOp; - - ISOBJ_TYPE_assert(pThis, vmprg); - - /* construct and fill vmop */ - CHKiRet(vmop.Construct(&pOp)); - CHKiRet(vmop.ConstructFinalize(pOp)); - CHKiRet(vmop.SetOpcode(pOp, opcode)); - if(pVar != NULL) - CHKiRet(vmop.SetVar(pOp, pVar)); - - /* and add it to the program */ - CHKiRet(vmprgAddOperation(pThis, pOp)); - -finalize_it: - RETiRet; -} - - -/* this is another shortcut for high-level callers. It is similar to vmprgAddVarOperation - * but adds a call operation. Among others, this include a check if the function - * is known. - */ -static rsRetVal -vmprgAddCallOperation(vmprg_t *pThis, cstr_t *pcsName) -{ - DEFiRet; - vmop_t *pOp; - - ISOBJ_TYPE_assert(pThis, vmprg); - - /* construct and fill vmop */ - CHKiRet(vmop.Construct(&pOp)); - CHKiRet(vmop.ConstructFinalize(pOp)); - CHKiRet(vmop.SetFunc(pOp, pcsName)); - CHKiRet(vmop.SetOpcode(pOp, opcode_FUNC_CALL)); - - /* and add it to the program */ - CHKiRet(vmprgAddOperation(pThis, pOp)); - -finalize_it: - RETiRet; -} - - -/* queryInterface function - * rgerhards, 2008-02-21 - */ -BEGINobjQueryInterface(vmprg) -CODESTARTobjQueryInterface(vmprg) - if(pIf->ifVersion != vmprgCURR_IF_VERSION) { /* check for current version, increment on each change */ - ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED); - } - - /* ok, we have the right interface, so let's fill it - * Please note that we may also do some backwards-compatibility - * work here (if we can support an older interface version - that, - * of course, also affects the "if" above). - */ - pIf->Construct = vmprgConstruct; - pIf->ConstructFinalize = vmprgConstructFinalize; - pIf->Destruct = vmprgDestruct; - pIf->DebugPrint = vmprgDebugPrint; - pIf->Obj2Str = Obj2Str; - pIf->AddOperation = vmprgAddOperation; - pIf->AddVarOperation = vmprgAddVarOperation; - pIf->AddCallOperation = vmprgAddCallOperation; -finalize_it: -ENDobjQueryInterface(vmprg) - - -/* Initialize the vmprg class. Must be called as the very first method - * before anything else is called inside this class. - * rgerhards, 2008-02-19 - */ -BEGINObjClassInit(vmprg, 1, OBJ_IS_CORE_MODULE) /* class, version */ - /* request objects we use */ - CHKiRet(objUse(vmop, CORE_COMPONENT)); - - /* set our own handlers */ - OBJSetMethodHandler(objMethod_DEBUGPRINT, vmprgDebugPrint); - OBJSetMethodHandler(objMethod_CONSTRUCTION_FINALIZER, vmprgConstructFinalize); -ENDObjClassInit(vmprg) - -/* vi:set ai: - */ |