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