Merge branch 'master' into beta

1 files changed, 65 insertions, 0 deletions

diff --git a/runtime/vm.h b/runtime/vm.h
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+/* The vm object.
+ *
+ * This implements the rsyslog virtual machine. The initial implementation is
+ * done to support complex user-defined expressions, but it may evolve into a
+ * much more useful thing over time.
+ *
+ * The virtual machine uses rsyslog variables as its memory storage system.
+ * All computation is done on a stack (vmstk). The vm supports a given
+ * instruction set and executes programs of type vmprg, which consist of
+ * single operations defined in vmop (which hold the instruction and the
+ * data).
+ *
+ * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of the rsyslog runtime library.
+ *
+ * The rsyslog runtime library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The rsyslog runtime library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the rsyslog runtime library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ * A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
+ */
+#ifndef INCLUDED_VM_H
+#define INCLUDED_VM_H
+
+#include "msg.h"
+#include "vmstk.h"
+#include "vmprg.h"
+
+/* the vm object */
+typedef struct vm_s {
+	BEGINobjInstance;	/* Data to implement generic object - MUST be the first data element! */
+	vmstk_t *pStk;		/* The stack */
+	msg_t *pMsg;		/* the current message (or NULL, if we have none) */
+} vm_t;
+
+
+/* interfaces */
+BEGINinterface(vm) /* name must also be changed in ENDinterface macro! */
+	INTERFACEObjDebugPrint(vm);
+	rsRetVal (*Construct)(vm_t **ppThis);
+	rsRetVal (*ConstructFinalize)(vm_t __attribute__((unused)) *pThis);
+	rsRetVal (*Destruct)(vm_t **ppThis);
+	rsRetVal (*ExecProg)(vm_t *pThis, vmprg_t *pProg);
+	rsRetVal (*PopBoolFromStack)(vm_t *pThis, var_t **ppVar); /* there are a few cases where we need this... */
+	rsRetVal (*PopVarFromStack)(vm_t *pThis, var_t **ppVar); /* there are a few cases where we need this... */
+	rsRetVal (*SetMsg)(vm_t *pThis, msg_t *pMsg); /* there are a few cases where we need this... */
+ENDinterface(vm)
+#define vmCURR_IF_VERSION 1 /* increment whenever you change the interface structure! */
+
+
+/* prototypes */
+PROTOTYPEObj(vm);
+
+#endif /* #ifndef INCLUDED_VM_H */