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source: vbox/trunk/src/VBox/VMM/include/SSMInternal.h@ 97441

Last change on this file since 97441 was 96407, checked in by vboxsync, 2 years ago

scm copyright and license note update
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1/* $Id: SSMInternal.h 96407 2022-08-22 17:43:14Z vboxsync $ */
2/** @file
3 * SSM - Internal header file.
4 */
5
6/*
7 * Copyright (C) 2006-2022 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * SPDX-License-Identifier: GPL-3.0-only
26 */
27
28#ifndef VMM_INCLUDED_SRC_include_SSMInternal_h
29#define VMM_INCLUDED_SRC_include_SSMInternal_h
30#ifndef RT_WITHOUT_PRAGMA_ONCE
31# pragma once
32#endif
33
34#include <VBox/cdefs.h>
35#include <VBox/types.h>
36#include <VBox/vmm/ssm.h>
37#include <iprt/critsect.h>
38
39RT_C_DECLS_BEGIN
40
41/** @defgroup grp_ssm_int Internals
42 * @ingroup grp_ssm
43 * @internal
44 * @{
45 */
46
47
48/**
49 * Data unit callback type.
50 */
51typedef enum SSMUNITTYPE
52{
53 /** PDM Device . */
54 SSMUNITTYPE_DEV = 1,
55 /** PDM Driver. */
56 SSMUNITTYPE_DRV,
57 /** PDM USB device. */
58 SSMUNITTYPE_USB,
59 /** VM Internal. */
60 SSMUNITTYPE_INTERNAL,
61 /** External Wrapper. */
62 SSMUNITTYPE_EXTERNAL
63} SSMUNITTYPE;
64
65/** Pointer to a data unit descriptor. */
66typedef struct SSMUNIT *PSSMUNIT;
67
68/**
69 * Data unit descriptor.
70 */
71typedef struct SSMUNIT
72{
73 /** Pointer ot the next one in the list. */
74 PSSMUNIT pNext;
75
76 /** Called in this save/load operation.
77 * The flag is used to determine whether there is need for a call to
78 * done or not. */
79 bool fCalled;
80 /** Finished its live part.
81 * This is used to handle VERR_SSM_VOTE_FOR_GIVING_UP. */
82 bool fDoneLive;
83 /** Callback interface type. */
84 SSMUNITTYPE enmType;
85 /** Type specific data. */
86 union
87 {
88 /** SSMUNITTYPE_DEV. */
89 struct
90 {
91 /** Prepare live save. */
92 PFNSSMDEVLIVEPREP pfnLivePrep;
93 /** Execute live save. */
94 PFNSSMDEVLIVEEXEC pfnLiveExec;
95 /** Vote live save complete. */
96 PFNSSMDEVLIVEVOTE pfnLiveVote;
97 /** Prepare save. */
98 PFNSSMDEVSAVEPREP pfnSavePrep;
99 /** Execute save. */
100 PFNSSMDEVSAVEEXEC pfnSaveExec;
101 /** Done save. */
102 PFNSSMDEVSAVEDONE pfnSaveDone;
103 /** Prepare load. */
104 PFNSSMDEVLOADPREP pfnLoadPrep;
105 /** Execute load. */
106 PFNSSMDEVLOADEXEC pfnLoadExec;
107 /** Done load. */
108 PFNSSMDEVLOADDONE pfnLoadDone;
109 /** Device instance. */
110 PPDMDEVINS pDevIns;
111 } Dev;
112
113 /** SSMUNITTYPE_DRV. */
114 struct
115 {
116 /** Prepare live save. */
117 PFNSSMDRVLIVEPREP pfnLivePrep;
118 /** Execute live save. */
119 PFNSSMDRVLIVEEXEC pfnLiveExec;
120 /** Vote live save complete. */
121 PFNSSMDRVLIVEVOTE pfnLiveVote;
122 /** Prepare save. */
123 PFNSSMDRVSAVEPREP pfnSavePrep;
124 /** Execute save. */
125 PFNSSMDRVSAVEEXEC pfnSaveExec;
126 /** Done save. */
127 PFNSSMDRVSAVEDONE pfnSaveDone;
128 /** Prepare load. */
129 PFNSSMDRVLOADPREP pfnLoadPrep;
130 /** Execute load. */
131 PFNSSMDRVLOADEXEC pfnLoadExec;
132 /** Done load. */
133 PFNSSMDRVLOADDONE pfnLoadDone;
134 /** Driver instance. */
135 PPDMDRVINS pDrvIns;
136 } Drv;
137
138 /** SSMUNITTYPE_USB. */
139 struct
140 {
141 /** Prepare live save. */
142 PFNSSMUSBLIVEPREP pfnLivePrep;
143 /** Execute live save. */
144 PFNSSMUSBLIVEEXEC pfnLiveExec;
145 /** Vote live save complete. */
146 PFNSSMUSBLIVEVOTE pfnLiveVote;
147 /** Prepare save. */
148 PFNSSMUSBSAVEPREP pfnSavePrep;
149 /** Execute save. */
150 PFNSSMUSBSAVEEXEC pfnSaveExec;
151 /** Done save. */
152 PFNSSMUSBSAVEDONE pfnSaveDone;
153 /** Prepare load. */
154 PFNSSMUSBLOADPREP pfnLoadPrep;
155 /** Execute load. */
156 PFNSSMUSBLOADEXEC pfnLoadExec;
157 /** Done load. */
158 PFNSSMUSBLOADDONE pfnLoadDone;
159 /** USB instance. */
160 PPDMUSBINS pUsbIns;
161 } Usb;
162
163 /** SSMUNITTYPE_INTERNAL. */
164 struct
165 {
166 /** Prepare live save. */
167 PFNSSMINTLIVEPREP pfnLivePrep;
168 /** Execute live save. */
169 PFNSSMINTLIVEEXEC pfnLiveExec;
170 /** Vote live save complete. */
171 PFNSSMINTLIVEVOTE pfnLiveVote;
172 /** Prepare save. */
173 PFNSSMINTSAVEPREP pfnSavePrep;
174 /** Execute save. */
175 PFNSSMINTSAVEEXEC pfnSaveExec;
176 /** Done save. */
177 PFNSSMINTSAVEDONE pfnSaveDone;
178 /** Prepare load. */
179 PFNSSMINTLOADPREP pfnLoadPrep;
180 /** Execute load. */
181 PFNSSMINTLOADEXEC pfnLoadExec;
182 /** Done load. */
183 PFNSSMINTLOADDONE pfnLoadDone;
184 } Internal;
185
186 /** SSMUNITTYPE_EXTERNAL. */
187 struct
188 {
189 /** Prepare live save. */
190 PFNSSMEXTLIVEPREP pfnLivePrep;
191 /** Execute live save. */
192 PFNSSMEXTLIVEEXEC pfnLiveExec;
193 /** Vote live save complete. */
194 PFNSSMEXTLIVEVOTE pfnLiveVote;
195 /** Prepare save. */
196 PFNSSMEXTSAVEPREP pfnSavePrep;
197 /** Execute save. */
198 PFNSSMEXTSAVEEXEC pfnSaveExec;
199 /** Done save. */
200 PFNSSMEXTSAVEDONE pfnSaveDone;
201 /** Prepare load. */
202 PFNSSMEXTLOADPREP pfnLoadPrep;
203 /** Execute load. */
204 PFNSSMEXTLOADEXEC pfnLoadExec;
205 /** Done load. */
206 PFNSSMEXTLOADDONE pfnLoadDone;
207 /** User data. */
208 void *pvUser;
209 } External;
210
211 struct
212 {
213 /** Prepare live save. */
214 PFNRT pfnLivePrep;
215 /** Execute live save. */
216 PFNRT pfnLiveExec;
217 /** Vote live save complete. */
218 PFNRT pfnLiveVote;
219 /** Prepare save. */
220 PFNRT pfnSavePrep;
221 /** Execute save. */
222 PFNRT pfnSaveExec;
223 /** Done save. */
224 PFNRT pfnSaveDone;
225 /** Prepare load. */
226 PFNRT pfnLoadPrep;
227 /** Execute load. */
228 PFNRT pfnLoadExec;
229 /** Done load. */
230 PFNRT pfnLoadDone;
231 /** User data. */
232 void *pvKey;
233 } Common;
234 } u;
235 /** Data layout version. */
236 uint32_t u32Version;
237 /** Instance number. */
238 uint32_t u32Instance;
239 /** The offset of the final data unit.
240 * This is used for constructing the directory. */
241 RTFOFF offStream;
242 /** Critical section to be taken before working any of the callbacks. */
243 PPDMCRITSECT pCritSect;
244 /** The guessed size of the data unit - used only for progress indication. */
245 size_t cbGuess;
246 /** Name size. (bytes) */
247 size_t cchName;
248 /** Name of this unit. (extends beyond the defined size) */
249 char szName[1];
250} SSMUNIT;
251
252AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLivePrep, u.Dev.pfnLivePrep);
253AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveExec, u.Dev.pfnLiveExec);
254AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveVote, u.Dev.pfnLiveVote);
255AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSavePrep, u.Dev.pfnSavePrep);
256AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveExec, u.Dev.pfnSaveExec);
257AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveDone, u.Dev.pfnSaveDone);
258AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadPrep, u.Dev.pfnLoadPrep);
259AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadExec, u.Dev.pfnLoadExec);
260AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadDone, u.Dev.pfnLoadDone);
261AssertCompile2MemberOffsets(SSMUNIT, u.Common.pvKey, u.Dev.pDevIns);
262
263AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLivePrep, u.Drv.pfnLivePrep);
264AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveExec, u.Drv.pfnLiveExec);
265AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveVote, u.Drv.pfnLiveVote);
266AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSavePrep, u.Drv.pfnSavePrep);
267AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveExec, u.Drv.pfnSaveExec);
268AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveDone, u.Drv.pfnSaveDone);
269AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadPrep, u.Drv.pfnLoadPrep);
270AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadExec, u.Drv.pfnLoadExec);
271AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadDone, u.Drv.pfnLoadDone);
272AssertCompile2MemberOffsets(SSMUNIT, u.Common.pvKey, u.Drv.pDrvIns);
273
274AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLivePrep, u.Usb.pfnLivePrep);
275AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveExec, u.Usb.pfnLiveExec);
276AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveVote, u.Usb.pfnLiveVote);
277AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSavePrep, u.Usb.pfnSavePrep);
278AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveExec, u.Usb.pfnSaveExec);
279AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveDone, u.Usb.pfnSaveDone);
280AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadPrep, u.Usb.pfnLoadPrep);
281AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadExec, u.Usb.pfnLoadExec);
282AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadDone, u.Usb.pfnLoadDone);
283AssertCompile2MemberOffsets(SSMUNIT, u.Common.pvKey, u.Usb.pUsbIns);
284
285AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLivePrep, u.Internal.pfnLivePrep);
286AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveExec, u.Internal.pfnLiveExec);
287AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveVote, u.Internal.pfnLiveVote);
288AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSavePrep, u.Internal.pfnSavePrep);
289AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveExec, u.Internal.pfnSaveExec);
290AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveDone, u.Internal.pfnSaveDone);
291AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadPrep, u.Internal.pfnLoadPrep);
292AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadExec, u.Internal.pfnLoadExec);
293AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadDone, u.Internal.pfnLoadDone);
294
295AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLivePrep, u.External.pfnLivePrep);
296AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveExec, u.External.pfnLiveExec);
297AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLiveVote, u.External.pfnLiveVote);
298AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSavePrep, u.External.pfnSavePrep);
299AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveExec, u.External.pfnSaveExec);
300AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnSaveDone, u.External.pfnSaveDone);
301AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadPrep, u.External.pfnLoadPrep);
302AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadExec, u.External.pfnLoadExec);
303AssertCompile2MemberOffsets(SSMUNIT, u.Common.pfnLoadDone, u.External.pfnLoadDone);
304AssertCompile2MemberOffsets(SSMUNIT, u.Common.pvKey, u.External.pvUser);
305
306
307/**
308 * SSM VM Instance data.
309 * Changes to this must checked against the padding of the cfgm union in VM!
310 *
311 * @todo Move this to UVM.
312 */
313typedef struct SSM
314{
315 /** Critical section for serializing cancellation (pSSM). */
316 RTCRITSECT CancelCritSect;
317 /** The handle of the current save or load operation.
318 * This is used by SSMR3Cancel. */
319 PSSMHANDLE volatile pSSM;
320
321 /** FIFO of data entity descriptors. */
322 R3PTRTYPE(PSSMUNIT) pHead;
323 /** The number of register units. */
324 uint32_t cUnits;
325 /** For lazy init. */
326 bool fInitialized;
327 /** Current pass (for STAM). */
328 uint32_t uPass;
329 uint32_t u32Alignment;
330} SSM;
331/** Pointer to SSM VM instance data. */
332typedef SSM *PSSM;
333
334
335
336/** @} */
337
338RT_C_DECLS_END
339
340#endif /* !VMM_INCLUDED_SRC_include_SSMInternal_h */
341
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