[libvirt] [PATCHv5 1/4] Define vboxUniformedAPI
Taowei
uaedante at gmail.com
Wed Jul 2 16:53:02 UTC 2014
The vboxUniformedAPI is reconstructed.
Introducing structs like vboxUniformedIObject, vboxUniformedIProgress
(and so on) to make the vboxUniformedAPI more regular.
---
src/Makefile.am | 3 +-
src/vbox/vbox_uniformed_api.h | 194 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 196 insertions(+), 1 deletion(-)
create mode 100644 src/vbox/vbox_uniformed_api.h
diff --git a/src/Makefile.am b/src/Makefile.am
index 2b9ac61..c1e3f45 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -673,7 +673,8 @@ VBOX_DRIVER_SOURCES = \
vbox/vbox_V4_2.c vbox/vbox_CAPI_v4_2.h \
vbox/vbox_V4_2_20.c vbox/vbox_CAPI_v4_2_20.h \
vbox/vbox_V4_3.c vbox/vbox_CAPI_v4_3.h \
- vbox/vbox_V4_3_4.c vbox/vbox_CAPI_v4_3_4.h
+ vbox/vbox_V4_3_4.c vbox/vbox_CAPI_v4_3_4.h \
+ vbox/vbox_uniformed_api.h
VBOX_DRIVER_EXTRA_DIST = \
vbox/vbox_tmpl.c vbox/README \
diff --git a/src/vbox/vbox_uniformed_api.h b/src/vbox/vbox_uniformed_api.h
new file mode 100644
index 0000000..ca41ec3
--- /dev/null
+++ b/src/vbox/vbox_uniformed_api.h
@@ -0,0 +1,194 @@
+/*
+ * Copyright 2014, Taowei Luo (uaedante at gmail.com)
+ *
+ * This 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 2.1 of the License, or (at your option) any later version.
+ *
+ * This 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 this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef VBOX_UNIFORMED_API_H
+# define VBOX_UNIFORMED_API_H
+
+# include "internal.h"
+
+/* This file may be used in three place. That is vbox_tmpl.c,
+ * vbox_common.c and vbox_driver.c. The vboxUniformedAPI and some
+ * types used for vboxUniformedAPI is defined here.
+ *
+ * The vbox_tmpl.c is the only place where the driver knows the inside
+ * architecture of those vbox structs(vboxObj, vboxSession,
+ * pFuncs, vboxCallback and vboxQueue). The file should be included
+ * after the currect vbox_CAPI_v*.h, then we can use the vbox structs
+ * in vboxGlobalData. The vbox_tmpl.c should implement functions
+ * defined in vboxUniformedAPI.
+ *
+ * In vbox_driver.c, it is used to define the struct vboxUniformedAPI.
+ * The vbox_driver.c collects vboxUniformedAPI for all versions.
+ * Then vboxRegister calls the vboxRegisterUniformedAPI to register.
+ * Note: In vbox_driver.c, the vbox structs in vboxGlobalData is
+ * defined by vbox_CAPI_v2.2.h.
+ *
+ * The vbox_common.c, it is used to generate common codes for all vbox
+ * versions. Bacause the same member varible's offset in a vbox struct
+ * may change between different vbox versions. The vbox_common.c
+ * shouldn't directly use struct's member varibles defined in
+ * vbox_CAPI_v*.h. To make things safety, we include the
+ * vbox_common.h in vbox_common.c. In this case, we treat structs
+ * defined by vbox as a void*. The common codes don't concern about
+ * the inside of this structs(actually, we can't, in the common level).
+ * With the help of vboxUniformed API, we call VirtualBox's API and
+ * implement the vbox driver in a high level.
+ *
+ * In conclusion:
+ * * In vbox_tmpl.c, this file is included after vbox_CAPI_v*.h
+ * * In vbox_driver.c, this file is included after vbox_glue.h
+ * * In vbox_common.c, this file is included after vbox_common.h
+ *
+ */
+
+/* Extracted define from vbox_tmpl.c */
+
+# ifdef WIN32
+struct _vboxIID_v2_x_WIN32 {
+ /* IID is represented by a GUID value. */
+ GUID value;
+};
+# endif /* !WIN32 */
+
+struct _vboxIID_v2_x {
+ /* IID is represented by a pointer to a nsID. */
+ nsID *value;
+
+ /* backing is used in cases where we need to create or copy an IID.
+ * We cannot allocate memory that can be freed by ComUnallocMem.
+ * Therefore, we use this stack allocated nsID instead. */
+ nsID backing;
+};
+
+struct _vboxIID_v3_x {
+ /* IID is represented by a UTF-16 encoded UUID in string form. */
+ PRUnichar *value;
+
+ /* owner indicates if we own the value and need to free it. */
+ bool owner;
+};
+
+typedef union {
+# ifdef WIN32
+ struct _vboxIID_v2_x_WIN32 vboxIID_v2_x_WIN32;
+# endif /* !WIN32 */
+ struct _vboxIID_v2_x vboxIID_v2_x;
+ struct _vboxIID_v3_x vboxIID_v3_x;
+} vboxIIDUnion;
+
+typedef union {
+ nsresult uResultCode;
+ PRInt32 resultCode;
+} resultCodeUnion;
+
+typedef struct {
+ virMutex lock;
+ unsigned long version;
+
+ virCapsPtr caps;
+ virDomainXMLOptionPtr xmlopt;
+
+ IVirtualBox *vboxObj;
+ ISession *vboxSession;
+
+ /** Our version specific API table pointer. */
+ PCVBOXXPCOM pFuncs;
+
+ /* The next is used when VBOX_API_VERSION > 2002000 */
+ /* Async event handling */
+ virObjectEventStatePtr domainEvents;
+ int fdWatch;
+# if defined(VBOX_API_VERSION) && VBOX_API_VERSION > 2002000 && VBOX_API_VERSION <= 3002000
+ /* IVirtualBoxCallback is used in VirtualBox 3.x only */
+ IVirtualBoxCallback *vboxCallback;
+# else /* VBOX_API_VERSION == 2002000 || VBOX_API_VERSION > 3002000 or VBOX_API_VERSION undefined */
+ void *vboxCallback;
+# endif /* VBOX_API_VERSION == 2002000 || VBOX_API_VERSION > 3002000 or VBOX_API_VERSION undefined */
+
+
+# if defined(VBOX_API_VERSION) && VBOX_API_VERSION > 2002000
+ nsIEventQueue *vboxQueue;
+# else /* VBOX_API_VERSION == 2002000 or undefined */
+ void *vboxQueue;
+# endif /* VBOX_API_VERSION == 2002000 or undefined */
+ int volatile vboxCallBackRefCount;
+
+ /* pointer back to the connection */
+ virConnectPtr conn;
+
+} vboxGlobalData;
+
+/* vboxUniformedAPI gives vbox_common.c a uniformed layer to see
+ * vbox API.
+ */
+
+/* Functions for vboxIID */
+typedef struct {
+ void (*initializeVboxIID)(vboxIIDUnion *iidu);
+ void (*vboxIIDUnalloc)(vboxGlobalData *data, vboxIIDUnion *iidu);
+ void (*vboxIIDFromUUID)(vboxGlobalData *data, vboxIIDUnion *iidu, const unsigned char *uuid);
+ void (*DEBUGIID)(const char *msg, vboxIIDUnion *iidu);
+} vboxUniformedIID;
+
+/* Functions for IObject */
+typedef struct {
+ nsresult (*GetMachine)(vboxGlobalData *data, vboxIIDUnion *iidu, IMachine **machine);
+} vboxUniformedIObject;
+
+/* Functions for ISession */
+typedef struct {
+ nsresult (*OpenExisting)(vboxGlobalData *data, vboxIIDUnion *iidu, IMachine *machine);
+ nsresult (*GetConsole)(ISession *session, IConsole **console);
+ nsresult (*Close)(ISession *session);
+} vboxUniformedISession;
+
+/* Functions for IConsole */
+typedef struct {
+ nsresult (*SaveState)(IConsole *console, IProgress **progress);
+} vboxUniformedIConsole;
+
+/* Functions for IProgress */
+typedef struct {
+ nsresult (*WaitForCompletion)(IProgress *progress, PRInt32 timeout);
+ nsresult (*GetResultCode)(IProgress *progress, resultCodeUnion *resultCode);
+} vboxUniformedIProgress;
+
+/* Functions for nsISupports */
+typedef struct {
+ nsresult (*Release)(void *Ihandle);
+} vboxUniformednsISupports;
+
+typedef struct {
+ /* vbox API version */
+ uint32_t APIVersion;
+ uint32_t XPCOMCVersion;
+ /* vbox APIs */
+ int (*pfnInitialize)(vboxGlobalData *data);
+ int (*initializeFWatch)(vboxGlobalData *data);
+ vboxUniformedIID UIID;
+ vboxUniformedIObject UIObject;
+ vboxUniformedISession UISession;
+ vboxUniformedIConsole UIConsole;
+ vboxUniformedIProgress UIProgress;
+ vboxUniformednsISupports nsUISupports;
+ /* vbox API features */
+ bool fWatchNeedInitialize;
+ bool getMachineForSession;
+} vboxUniformedAPI;
+
+#endif /* VBOX_UNIFORMED_API_H */
--
1.7.9.5
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