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* The program is made up of vmop_t's, one after another. When we support
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* branching (or user-defined functions) at some time, well do this via
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* special branch opcodes. They will then contain the actual memory
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* address of a logical program entry that we shall branch to. Other than
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* that, all execution is serial - that is one opcode is executed after
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* the other. This class implements a logical program store, modelled
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* after real main memory. A linked list of opcodes is used to implement it.
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* In the future, we may use linked lists of array's to enhance performance,
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* but for the time being we have taken the simplistic approach (which also
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* reduces risk of bugs during initial development). The necessary pointers
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* for this are already implemented in vmop. Though this is not the 100%
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* correct place, we have opted this time in favor of performance, which
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* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
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* This file is part of rsyslog.
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* Rsyslog is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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* Rsyslog is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
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* A copy of the GPL can be found in the file "COPYING" in this distribution.
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#ifndef INCLUDED_VMPRG_H
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#define INCLUDED_VMPRG_H
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/* the vmprg object */
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typedef struct vmprg_s {
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BEGINobjInstance; /* Data to implement generic object - MUST be the first data element! */
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vmop_t *vmopRoot; /* start of program */
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vmop_t *vmopLast; /* last vmop of program (for adding new ones) */
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BEGINinterface(vmprg) /* name must also be changed in ENDinterface macro! */
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INTERFACEObjDebugPrint(vmprg);
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rsRetVal (*Construct)(vmprg_t **ppThis);
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rsRetVal (*ConstructFinalize)(vmprg_t __attribute__((unused)) *pThis);
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rsRetVal (*Destruct)(vmprg_t **ppThis);
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rsRetVal (*AddOperation)(vmprg_t *pThis, vmop_t *pOp);
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rsRetVal (*AddVarOperation)(vmprg_t *pThis, opcode_t opcode, var_t *pVar);
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#define vmprgCURR_IF_VERSION 1 /* increment whenever you change the interface structure! */
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#endif /* #ifndef INCLUDED_VMPRG_H */
added
removed
vmprg.h
