|
1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // e32\euser\us_mes.cpp |
|
15 // |
|
16 // |
|
17 |
|
18 #include "us_std.h" |
|
19 |
|
20 |
|
21 |
|
22 |
|
23 EXPORT_C void RServer2::Receive(RMessage2& aMessage) |
|
24 // |
|
25 // Receive a message for the server synchronously. |
|
26 // |
|
27 { |
|
28 TRequestStatus s; |
|
29 Receive(aMessage,s); |
|
30 User::WaitForRequest(s); |
|
31 __ASSERT_ALWAYS(s==KErrNone,Panic(ETMesReceiveFailed)); |
|
32 } |
|
33 |
|
34 |
|
35 |
|
36 GLDEF_C void CompleteRequest(TRequestStatus &aStatus,TInt aCode) |
|
37 { |
|
38 TRequestStatus *pS=(&aStatus); |
|
39 User::RequestComplete(pS,aCode); |
|
40 } |
|
41 |
|
42 |
|
43 |
|
44 EXPORT_C TInt RSessionBase::DoSendReceive(TInt aFunction,const TIpcArgs* aArgs) const |
|
45 // |
|
46 // Send a message and wait for the reply synchronously. |
|
47 // |
|
48 { |
|
49 if (TUint(aFunction)<=TUint(KMaxTInt)) |
|
50 return SendSync(aFunction,aArgs); |
|
51 |
|
52 Panic(ETMesBadFunctionNumber); |
|
53 return 0; |
|
54 } |
|
55 |
|
56 |
|
57 |
|
58 EXPORT_C TInt RSessionBase::DoSend(TInt aFunction,const TIpcArgs* aArgs) const |
|
59 // |
|
60 // Send a blind message to the server. |
|
61 // |
|
62 { |
|
63 if (TUint(aFunction)<=TUint(KMaxTInt)) |
|
64 return SendAsync(aFunction,aArgs,NULL); |
|
65 |
|
66 Panic(ETMesBadFunctionNumber); |
|
67 return 0; |
|
68 } |
|
69 |
|
70 |
|
71 |
|
72 EXPORT_C void RSessionBase::DoSendReceive(TInt aFunction,const TIpcArgs* aArgs,TRequestStatus &aStatus) const |
|
73 // |
|
74 // Send a message and wait for the reply asynchronously. |
|
75 // |
|
76 { |
|
77 if (TUint(aFunction)<=TUint(KMaxTInt)) |
|
78 { |
|
79 aStatus=KRequestPending; |
|
80 TInt r=SendAsync(aFunction,aArgs,&aStatus); |
|
81 if (r!=KErrNone) |
|
82 ::CompleteRequest(aStatus,r); |
|
83 } |
|
84 else |
|
85 Panic(ETMesBadFunctionNumber); |
|
86 } |
|
87 |
|
88 |
|
89 |
|
90 TInt RSubSessionBase::DoCreateSubSession(RSessionBase& aSession,TInt aFunction,const TIpcArgs* aArgs, TBool aAutoClose) |
|
91 { |
|
92 TIpcArgs a; |
|
93 if (aArgs!=NULL) |
|
94 { |
|
95 a.iArgs[0] = aArgs->iArgs[0]; |
|
96 a.iArgs[1] = aArgs->iArgs[1]; |
|
97 a.iArgs[2] = aArgs->iArgs[2]; |
|
98 a.iFlags = aArgs->iFlags; |
|
99 } |
|
100 TPckgBuf<TInt> reply; |
|
101 a.Set(3,&reply); |
|
102 TInt r=aSession.SendReceive(aFunction,a); |
|
103 if (r==KErrNone) |
|
104 { |
|
105 iSubSessionHandle=reply(); |
|
106 if (aAutoClose) |
|
107 { |
|
108 iSession=aSession; |
|
109 // set the caller's session handle to NULL to discourage the caller from closing it. |
|
110 aSession.SetHandle(KNullHandle); |
|
111 } |
|
112 else |
|
113 { |
|
114 // Set session handle with 'no close' set, to prevent CloseSubSession() |
|
115 // from closing down the session |
|
116 iSession.SetHandleNC(aSession.Handle()); |
|
117 } |
|
118 } |
|
119 else |
|
120 { |
|
121 iSubSessionHandle=0; |
|
122 iSession.SetHandle(KNullHandle); |
|
123 // Close the caller's session so it isn't left orphaned |
|
124 if (aAutoClose) |
|
125 aSession.Close(); |
|
126 } |
|
127 return(r); |
|
128 } |
|
129 |
|
130 |
|
131 |
|
132 EXPORT_C TInt RSubSessionBase::DoCreateSubSession(const RSessionBase& aSession,TInt aFunction,const TIpcArgs* aArgs) |
|
133 { |
|
134 // need to cast away const |
|
135 return DoCreateSubSession( (RSessionBase&) aSession, aFunction, aArgs, EFalse); |
|
136 } |
|
137 |
|
138 |
|
139 |
|
140 /** |
|
141 Creates a new sub-session within an existing session. The new sub-session takes |
|
142 ownership of the session so that when the sub-session is closed, the session is |
|
143 closed too. If the creation of the sub-session fails, the session is closed immediately. |
|
144 In other words, this method will always take ownership of the session, whether it succeeds |
|
145 or not and the caller should never need to close it. |
|
146 |
|
147 @param aSession The session to which this sub-session will belong. |
|
148 @param aFunction The opcode specifying the requested service; |
|
149 the server should interpret this as a request to create |
|
150 a sub-session. |
|
151 @param aArgs The arguments to be sent to the server as part of the |
|
152 sub-session create request. The fourth argument is not |
|
153 sent to the server, instead it is replaced with a descriptor |
|
154 reference to the 32bit value where the server should store |
|
155 the handle of the created sub-session. |
|
156 |
|
157 @return KErrNone if successful, otherwise one of the other system-wide error |
|
158 codes. |
|
159 |
|
160 */ |
|
161 EXPORT_C TInt RSubSessionBase::CreateAutoCloseSubSession(RSessionBase& aSession,TInt aFunction,const TIpcArgs& aArgs) |
|
162 { |
|
163 return DoCreateSubSession(aSession, aFunction, &aArgs, ETrue); |
|
164 } |
|
165 |
|
166 |
|
167 |
|
168 /** |
|
169 Returns a copy of the session associated with this sub-session. |
|
170 |
|
171 @return a copy of the session |
|
172 */ |
|
173 EXPORT_C const RSessionBase RSubSessionBase::Session() const |
|
174 { |
|
175 RSessionBase session = iSession; |
|
176 |
|
177 // If this is a "normal" subsession, then the ENoClose flag will be set |
|
178 // to prevent the closing of the subsession from closing down the main session |
|
179 // so in this case we need to turn the ENoClose flag OFF to allow someone |
|
180 // to use the returned session to call RSessionBase::Close(). |
|
181 // If this is a "autoclose" subsession, then the ENoClose flag will be clear |
|
182 // to allow the closing of the subsession to close down the main session |
|
183 // so in this case we need to turn the ENoClose flag ON to stop someone from |
|
184 // using the returned session to call RSessionBase::Close(). |
|
185 session.iHandle ^= CObjectIx::ENoClose; |
|
186 |
|
187 |
|
188 return session; |
|
189 } |
|
190 |
|
191 |
|
192 |
|
193 /** |
|
194 Closes the sub-session. |
|
195 |
|
196 @param aFunction The opcode specifying the requested service; |
|
197 the server should interpret this as a request to close |
|
198 the sub-session. |
|
199 */ |
|
200 EXPORT_C void RSubSessionBase::CloseSubSession(TInt aFunction) |
|
201 { |
|
202 if (iSubSessionHandle) |
|
203 { |
|
204 iSession.SendReceive(aFunction,TIpcArgs(TIpcArgs::ENothing,TIpcArgs::ENothing,TIpcArgs::ENothing,iSubSessionHandle)); |
|
205 iSubSessionHandle=KNullHandle; |
|
206 |
|
207 // Close the session - will only work if CObjectIx::ENoClose is clear |
|
208 // i.e. the sub-session was created using CreateAutoCloseSubSession() |
|
209 iSession.Close(); |
|
210 } |
|
211 } |
|
212 |
|
213 |
|
214 |
|
215 EXPORT_C TInt RSubSessionBase::DoSend(TInt aFunction,const TIpcArgs* aArgs) const |
|
216 // |
|
217 // Blind send. |
|
218 // |
|
219 { |
|
220 TIpcArgs a; |
|
221 if(aArgs) |
|
222 { |
|
223 a.iArgs[0] = aArgs->iArgs[0]; |
|
224 a.iArgs[1] = aArgs->iArgs[1]; |
|
225 a.iArgs[2] = aArgs->iArgs[2]; |
|
226 a.iFlags = aArgs->iFlags&((1<<(3*TIpcArgs::KBitsPerType))-1); |
|
227 } |
|
228 a.iArgs[3] = iSubSessionHandle; |
|
229 return(iSession.Send(aFunction,a)); |
|
230 } |
|
231 |
|
232 |
|
233 |
|
234 EXPORT_C void RSubSessionBase::DoSendReceive(TInt aFunction,const TIpcArgs* aArgs,TRequestStatus &aStatus) const |
|
235 // |
|
236 // Send and wait for reply asynchronously. |
|
237 // |
|
238 { |
|
239 TIpcArgs a; |
|
240 if(aArgs) |
|
241 { |
|
242 a.iArgs[0] = aArgs->iArgs[0]; |
|
243 a.iArgs[1] = aArgs->iArgs[1]; |
|
244 a.iArgs[2] = aArgs->iArgs[2]; |
|
245 a.iFlags = aArgs->iFlags&((1<<(3*TIpcArgs::KBitsPerType))-1); |
|
246 } |
|
247 a.iArgs[3] = iSubSessionHandle; |
|
248 iSession.SendReceive(aFunction,a,aStatus); |
|
249 } |
|
250 |
|
251 |
|
252 |
|
253 EXPORT_C TInt RSubSessionBase::DoSendReceive(TInt aFunction,const TIpcArgs* aArgs) const |
|
254 // |
|
255 // Send and wait for reply synchronously. |
|
256 // |
|
257 { |
|
258 TIpcArgs a; |
|
259 if(aArgs) |
|
260 { |
|
261 a.iArgs[0] = aArgs->iArgs[0]; |
|
262 a.iArgs[1] = aArgs->iArgs[1]; |
|
263 a.iArgs[2] = aArgs->iArgs[2]; |
|
264 a.iFlags = aArgs->iFlags&((1<<(3*TIpcArgs::KBitsPerType))-1); |
|
265 } |
|
266 a.iArgs[3] = iSubSessionHandle; |
|
267 return(iSession.SendReceive(aFunction,a)); |
|
268 } |
|
269 |
|
270 |
|
271 |
|
272 |
|
273 |
|
274 |