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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:17:27 +0000
commitf215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch)
tree6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibBalloon.cpp
parentInitial commit. (diff)
downloadvirtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz
virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibBalloon.cpp')
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diff --git a/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibBalloon.cpp b/src/VBox/Additions/common/VBoxGuest/lib/VBoxGuestR3LibBalloon.cpp
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+/* $Id: VBoxGuestR3LibBalloon.cpp $ */
+/** @file
+ * VBoxGuestR3Lib - Ring-3 Support Library for VirtualBox guest additions, Ballooning.
+ */
+
+/*
+ * Copyright (C) 2007-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program 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, in version 3 of the
+ * License.
+ *
+ * This program 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 this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include "VBoxGuestR3LibInternal.h"
+#include <iprt/string.h>
+
+
+/**
+ * Refresh the memory balloon after a change.
+ *
+ * @returns IPRT status code.
+ * @param pcChunks The size of the balloon in chunks of 1MB (out).
+ * @param pfHandleInR3 Allocating of memory in R3 required (out).
+ */
+VBGLR3DECL(int) VbglR3MemBalloonRefresh(uint32_t *pcChunks, bool *pfHandleInR3)
+{
+ VBGLIOCCHECKBALLOON Info;
+ VBGLREQHDR_INIT(&Info.Hdr, CHECK_BALLOON);
+ int rc = vbglR3DoIOCtl(VBGL_IOCTL_CHECK_BALLOON, &Info.Hdr, sizeof(Info));
+ if (RT_SUCCESS(rc))
+ {
+ *pcChunks = Info.u.Out.cBalloonChunks;
+ *pfHandleInR3 = Info.u.Out.fHandleInR3 != false;
+ }
+ return rc;
+}
+
+
+/**
+ * Change the memory by granting/reclaiming memory to/from R0.
+ *
+ * @returns IPRT status code.
+ * @param pv Memory chunk (1MB).
+ * @param fInflate true = inflate balloon (grant memory).
+ * false = deflate balloon (reclaim memory).
+ */
+VBGLR3DECL(int) VbglR3MemBalloonChange(void *pv, bool fInflate)
+{
+ VBGLIOCCHANGEBALLOON Info;
+ VBGLREQHDR_INIT(&Info.Hdr, CHANGE_BALLOON);
+ Info.u.In.pvChunk = pv;
+ Info.u.In.fInflate = fInflate;
+ RT_ZERO(Info.u.In.abPadding);
+ return vbglR3DoIOCtl(VBGL_IOCTL_CHANGE_BALLOON, &Info.Hdr, sizeof(Info));
+}
+