|
1 /* |
|
2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of the License "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: bsprocessstarter.cpp |
|
15 * |
|
16 */ |
|
17 |
|
18 // INCLUDE FILES |
|
19 #include "bsprocessstarter.h" |
|
20 #include <e32std.h> |
|
21 #include <f32file.h> |
|
22 |
|
23 |
|
24 // CONSTANTS |
|
25 _LIT( KEka2ExeDir,"\\sys\\bin\\"); |
|
26 _LIT( KEka2LaunchMutexExt, "[lMtx]" ); |
|
27 const TInt KEka2SrvConnTries = 7; |
|
28 const TInt KEka2SrvConnInitialRetryWait = 500; //MicroSeconds => 0.0005s |
|
29 |
|
30 |
|
31 |
|
32 // ============================================================== |
|
33 // ====================== HELPER CLASS ========================== |
|
34 // ============================================================== |
|
35 |
|
36 /** |
|
37 * RSessionBase accessor to give to the ProcessStarter |
|
38 * access to RSessionBase::CreateSession(). |
|
39 */ |
|
40 class REka2SessionBaseAccessor : public RSessionBase |
|
41 { |
|
42 public: // Constructor |
|
43 inline REka2SessionBaseAccessor() |
|
44 { |
|
45 } |
|
46 |
|
47 public: // New functions |
|
48 |
|
49 /** |
|
50 * Public access to RSessionBase::CreateSession(). |
|
51 */ |
|
52 inline TInt CreateSession( const TDesC& aServer, |
|
53 const TVersion& aVersion, |
|
54 TInt aAsyncMessageSlots ) |
|
55 { |
|
56 return RSessionBase::CreateSession( aServer, |
|
57 aVersion, |
|
58 aAsyncMessageSlots ); |
|
59 } |
|
60 }; |
|
61 |
|
62 |
|
63 |
|
64 |
|
65 |
|
66 // ============================================================== |
|
67 // ====================== PROCESSSTARTER ======================== |
|
68 // ============================================================== |
|
69 |
|
70 |
|
71 // -------------------------------------------------------------- |
|
72 // BSProcessStarter::FullExePathForClienLocation() |
|
73 // -------------------------------------------------------------- |
|
74 // |
|
75 void BSProcessStarter::FullExePathForClienLocation( |
|
76 const TDesC& aExeName, |
|
77 TFileName& aFullExePath ) |
|
78 { |
|
79 //Get drive (C:) where this client code is installed |
|
80 { |
|
81 TFileName tmp; |
|
82 Dll::FileName( tmp ); |
|
83 aFullExePath.Copy( TParsePtrC( tmp ).Drive() ); |
|
84 } |
|
85 |
|
86 //Build the rest from the exe path |
|
87 aFullExePath.Append( KEka2ExeDir ); |
|
88 aFullExePath.Append( aExeName ); |
|
89 } |
|
90 |
|
91 |
|
92 |
|
93 // -------------------------------------------------------------- |
|
94 // BSProcessStarter::StartInstance() |
|
95 // -------------------------------------------------------------- |
|
96 // |
|
97 TInt BSProcessStarter::StartInstance( |
|
98 const TDesC& aFullExePath, |
|
99 const TDesC& aCommand, |
|
100 const TArray< TProcessStartupParam >* aParams ) |
|
101 { |
|
102 RMutex launchMutex; |
|
103 TInt error = KErrNotFound; |
|
104 |
|
105 { |
|
106 // Dynamic mutex name used to allow code share |
|
107 TName launchMutexName( TParsePtrC( aFullExePath ).Name() ); |
|
108 launchMutexName.Append( KEka2LaunchMutexExt ); |
|
109 |
|
110 // Open or Create mutex to serialize to access to server startup code. |
|
111 // (race condition safe way) |
|
112 while( error == KErrNotFound ) |
|
113 { |
|
114 error = launchMutex.CreateGlobal( launchMutexName ); |
|
115 if( error != KErrAlreadyExists ) |
|
116 { |
|
117 break; |
|
118 } |
|
119 error = launchMutex.OpenGlobal( launchMutexName ); |
|
120 } |
|
121 |
|
122 if( error != KErrNone ) |
|
123 { |
|
124 return error; |
|
125 } |
|
126 } |
|
127 |
|
128 |
|
129 launchMutex.Wait(); |
|
130 |
|
131 //Serialized access |
|
132 error = BSProcessStarter::DoStartInstance( aFullExePath, |
|
133 aCommand, |
|
134 aParams ); |
|
135 |
|
136 launchMutex.Signal(); |
|
137 launchMutex.Close(); |
|
138 |
|
139 return error; |
|
140 } |
|
141 |
|
142 |
|
143 |
|
144 // -------------------------------------------------------------- |
|
145 // BSProcessStarter::ConnectToServer() |
|
146 // -------------------------------------------------------------- |
|
147 // |
|
148 TInt BSProcessStarter::ConnectToServer( |
|
149 const TDesC& aFullExePath, |
|
150 const TDesC& aCommand, |
|
151 const TArray< TProcessStartupParam >* aParams, |
|
152 RSessionBase& aSessionToConnect, |
|
153 const TDesC& aServerName, |
|
154 const TVersion& aClientVersion, |
|
155 TInt aAsyncMessageSlots ) |
|
156 { |
|
157 if( aSessionToConnect.Handle() != KNullHandle ) |
|
158 { |
|
159 return KErrInUse; |
|
160 } |
|
161 |
|
162 TInt err = KErrNone; |
|
163 TInt startupWait = KEka2SrvConnInitialRetryWait; |
|
164 |
|
165 //Server connect and launch loop |
|
166 for( TInt trie = 0 ; trie < KEka2SrvConnTries ; trie++ ) |
|
167 { |
|
168 REka2SessionBaseAccessor acc; |
|
169 err = acc.CreateSession( aServerName, |
|
170 aClientVersion, |
|
171 aAsyncMessageSlots ); |
|
172 |
|
173 if( err == KErrNone ) |
|
174 { |
|
175 //session ownership is now on client |
|
176 aSessionToConnect = acc; |
|
177 return KErrNone; |
|
178 } |
|
179 |
|
180 else if( ( err == KErrNotFound ) || |
|
181 ( err == KErrServerTerminated ) ) |
|
182 { |
|
183 //Server missing or died when connecting |
|
184 //Start a new server |
|
185 err = BSProcessStarter::StartInstance( aFullExePath, |
|
186 aCommand, |
|
187 aParams ); |
|
188 |
|
189 //If process exist already, then all is fine |
|
190 //(some other process started it between the origical connect and launch trie) |
|
191 if( err == KErrAlreadyExists ) |
|
192 { |
|
193 err = KErrNone; |
|
194 } |
|
195 |
|
196 //If server process start failed, bail out. |
|
197 if( err != KErrNone ) |
|
198 { |
|
199 return err; |
|
200 } |
|
201 |
|
202 //If this is 2nd or subsequent try, |
|
203 //give some time for server to startup |
|
204 if( trie > 0 ) |
|
205 { |
|
206 // Code scanner warning : Use of User::After (id:92) |
|
207 // it is required to be used here |
|
208 User::After( startupWait ); // CSI: 92 # See above |
|
209 startupWait = 2 * startupWait; |
|
210 } |
|
211 } |
|
212 |
|
213 else |
|
214 { |
|
215 //Server process start failed. Bail out. |
|
216 return err; |
|
217 } |
|
218 } |
|
219 |
|
220 return err; |
|
221 } |
|
222 |
|
223 |
|
224 |
|
225 // -------------------------------------------------------------- |
|
226 // BSProcessStarter::DoStartServerInstance() |
|
227 // -------------------------------------------------------------- |
|
228 // |
|
229 TInt BSProcessStarter::DoStartInstance( |
|
230 const TDesC& aFullExePath, |
|
231 const TDesC& aCommand, |
|
232 const TArray< TProcessStartupParam >* aParams ) |
|
233 { |
|
234 TInt error = KErrNone; |
|
235 |
|
236 //Create process |
|
237 RProcess process; |
|
238 error = process.Create( aFullExePath, aCommand ); |
|
239 |
|
240 if( error == KErrNone ) |
|
241 { |
|
242 //Set process startup parameters |
|
243 error = ApplyParameters( aParams, process ); |
|
244 |
|
245 //And execute the process and wait it's startup |
|
246 if( error == KErrNone ) |
|
247 { |
|
248 TRequestStatus rendezvousStatus; |
|
249 process.Rendezvous( rendezvousStatus ); |
|
250 |
|
251 process.Resume(); |
|
252 // Codescanner warning: user of User::WaitForRequest (Id:94) |
|
253 // it is required to use at server startup |
|
254 User::WaitForRequest( rendezvousStatus ); // CSI: 94 # See above |
|
255 error = rendezvousStatus.Int(); |
|
256 |
|
257 if( process.ExitType() != EExitPending ) |
|
258 { |
|
259 //Something failed in server startup |
|
260 //Force the error code to be always something |
|
261 //else than KErrNone |
|
262 if( error == KErrNone ) |
|
263 { |
|
264 error = KErrServerTerminated; |
|
265 } |
|
266 } |
|
267 } |
|
268 } |
|
269 |
|
270 process.Close(); |
|
271 |
|
272 return error; |
|
273 } |
|
274 |
|
275 |
|
276 |
|
277 // -------------------------------------------------------------- |
|
278 // BSProcessStarter::ApplyParameters() |
|
279 // -------------------------------------------------------------- |
|
280 // |
|
281 TInt BSProcessStarter::ApplyParameters( |
|
282 const TArray< TProcessStartupParam >* aParams, |
|
283 RProcess& aProcess ) |
|
284 { |
|
285 TInt error = KErrNone; |
|
286 if( aParams ) |
|
287 { |
|
288 const TInt paramCount = aParams->Count(); |
|
289 for( TInt ix = 0; ix < paramCount; ix++ ) |
|
290 { |
|
291 error = (*aParams)[ ix ].ApplyParam( aProcess ); |
|
292 if( error != KErrNone ) |
|
293 { |
|
294 break; |
|
295 } |
|
296 } |
|
297 } |
|
298 |
|
299 return error; |
|
300 } |
|
301 |
|
302 |
|
303 |
|
304 // ============================================================== |
|
305 // ================== TPROCESSSTARTUPPARAM ====================== |
|
306 // ============================================================== |
|
307 |
|
308 // -------------------------------------------------------------- |
|
309 // TProcessStartupParam::TProcessStartupParam() |
|
310 // -------------------------------------------------------------- |
|
311 // |
|
312 TProcessStartupParam::TProcessStartupParam() |
|
313 : iType( EUnknown ), |
|
314 iSlot( KErrNotFound ) |
|
315 { |
|
316 } |
|
317 |
|
318 |
|
319 // -------------------------------------------------------------- |
|
320 // TProcessStartupParam::Set() |
|
321 // -------------------------------------------------------------- |
|
322 // |
|
323 void TProcessStartupParam::Set( TInt aSlot, |
|
324 const RHandleBase& aHandle ) |
|
325 { |
|
326 iType = EHandle; |
|
327 iSlot = aSlot; |
|
328 iHandle = &aHandle; |
|
329 } |
|
330 |
|
331 |
|
332 // -------------------------------------------------------------- |
|
333 // TProcessStartupParam::Set() |
|
334 // -------------------------------------------------------------- |
|
335 // |
|
336 void TProcessStartupParam::Set( TInt aSlot, |
|
337 const RSubSessionBase& aSubSession ) |
|
338 { |
|
339 iType = ESubSession; |
|
340 iSlot = aSlot; |
|
341 iSubSession = &aSubSession; |
|
342 } |
|
343 |
|
344 |
|
345 // -------------------------------------------------------------- |
|
346 // TProcessStartupParam::Set() |
|
347 // -------------------------------------------------------------- |
|
348 // |
|
349 void TProcessStartupParam::Set( TInt aSlot, |
|
350 const TDesC16& aDes ) |
|
351 { |
|
352 iType = EDes16; |
|
353 iSlot = aSlot; |
|
354 iDes16.Set( aDes ); |
|
355 } |
|
356 |
|
357 |
|
358 // -------------------------------------------------------------- |
|
359 // TProcessStartupParam::Set() |
|
360 // -------------------------------------------------------------- |
|
361 // |
|
362 void TProcessStartupParam::Set( TInt aSlot, |
|
363 const TDesC8& aDes ) |
|
364 { |
|
365 iType = EDes8; |
|
366 iSlot = aSlot; |
|
367 iDes8.Set( aDes ); |
|
368 } |
|
369 |
|
370 |
|
371 // -------------------------------------------------------------- |
|
372 // TProcessStartupParam::Set() |
|
373 // -------------------------------------------------------------- |
|
374 // |
|
375 void TProcessStartupParam::Set( TInt aSlot, |
|
376 TInt aInt ) |
|
377 { |
|
378 iType = EInt; |
|
379 iSlot = aSlot; |
|
380 iInt = aInt; |
|
381 } |
|
382 |
|
383 |
|
384 // -------------------------------------------------------------- |
|
385 // TProcessStartupParam::ApplyParam() |
|
386 // -------------------------------------------------------------- |
|
387 // |
|
388 TInt TProcessStartupParam::ApplyParam( RProcess& aProcess ) const |
|
389 { |
|
390 switch( iType ) |
|
391 { |
|
392 case EHandle: return aProcess.SetParameter( iSlot, *iHandle ); |
|
393 case ESubSession: return aProcess.SetParameter( iSlot, *iSubSession ); |
|
394 case EDes16: return aProcess.SetParameter( iSlot, iDes16 ); |
|
395 case EDes8: return aProcess.SetParameter( iSlot, iDes8 ); |
|
396 case EInt: return aProcess.SetParameter( iSlot, iInt ); |
|
397 } |
|
398 |
|
399 return KErrUnknown; |
|
400 } |
|
401 |
|
402 |
|
403 // END OF FILE |
|
404 |
|
405 |
|
406 |