1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski
25*b1cdbd2cSJim Jagielski /* system headers */
26*b1cdbd2cSJim Jagielski #include "system.h"
27*b1cdbd2cSJim Jagielski
28*b1cdbd2cSJim Jagielski #include <osl/diagnose.h>
29*b1cdbd2cSJim Jagielski #include <osl/mutex.h>
30*b1cdbd2cSJim Jagielski #include <osl/signal.h>
31*b1cdbd2cSJim Jagielski
32*b1cdbd2cSJim Jagielski typedef struct _oslSignalHandlerImpl
33*b1cdbd2cSJim Jagielski {
34*b1cdbd2cSJim Jagielski oslSignalHandlerFunction Handler;
35*b1cdbd2cSJim Jagielski void* pData;
36*b1cdbd2cSJim Jagielski struct _oslSignalHandlerImpl* pNext;
37*b1cdbd2cSJim Jagielski } oslSignalHandlerImpl;
38*b1cdbd2cSJim Jagielski
39*b1cdbd2cSJim Jagielski static sal_Bool bErrorReportingEnabled = sal_True;
40*b1cdbd2cSJim Jagielski static sal_Bool bInitSignal = sal_False;
41*b1cdbd2cSJim Jagielski static oslMutex SignalListMutex;
42*b1cdbd2cSJim Jagielski static oslSignalHandlerImpl* SignalList;
43*b1cdbd2cSJim Jagielski
44*b1cdbd2cSJim Jagielski /*static*//* ULONG _Export APIENTRY SignalHandlerFunction(PEXCEPTIONREPORTRECORD pERepRec,
45*b1cdbd2cSJim Jagielski PEXCEPTIONREGISTRATIONRECORD,
46*b1cdbd2cSJim Jagielski PCONTEXTRECORD, PVOID);
47*b1cdbd2cSJim Jagielski */
48*b1cdbd2cSJim Jagielski /*static*/ ULONG __declspec(dllexport) APIENTRY SignalHandlerFunction(PEXCEPTIONREPORTRECORD pERepRec,
49*b1cdbd2cSJim Jagielski PEXCEPTIONREGISTRATIONRECORD,
50*b1cdbd2cSJim Jagielski PCONTEXTRECORD, PVOID);
51*b1cdbd2cSJim Jagielski static EXCEPTIONREGISTRATIONRECORD ExcptHandler = { 0, SignalHandlerFunction };
52*b1cdbd2cSJim Jagielski
InitSignal(void)53*b1cdbd2cSJim Jagielski static sal_Bool InitSignal( void )
54*b1cdbd2cSJim Jagielski {
55*b1cdbd2cSJim Jagielski SignalListMutex = osl_createMutex();
56*b1cdbd2cSJim Jagielski
57*b1cdbd2cSJim Jagielski ExcptHandler.ExceptionHandler = (_ERR *) &SignalHandlerFunction;
58*b1cdbd2cSJim Jagielski /* DosSetExceptionHandler(&ExcptHandler); */
59*b1cdbd2cSJim Jagielski
60*b1cdbd2cSJim Jagielski return sal_True;
61*b1cdbd2cSJim Jagielski }
62*b1cdbd2cSJim Jagielski
DeInitSignal(void)63*b1cdbd2cSJim Jagielski static sal_Bool DeInitSignal( void )
64*b1cdbd2cSJim Jagielski {
65*b1cdbd2cSJim Jagielski /* DosUnsetExceptionHandler(&ExcptHandler); */
66*b1cdbd2cSJim Jagielski
67*b1cdbd2cSJim Jagielski osl_destroyMutex(SignalListMutex);
68*b1cdbd2cSJim Jagielski
69*b1cdbd2cSJim Jagielski return sal_False;
70*b1cdbd2cSJim Jagielski }
71*b1cdbd2cSJim Jagielski
CallSignalHandler(oslSignalInfo * pInfo)72*b1cdbd2cSJim Jagielski static oslSignalAction CallSignalHandler(oslSignalInfo *pInfo)
73*b1cdbd2cSJim Jagielski {
74*b1cdbd2cSJim Jagielski oslSignalHandlerImpl* pHandler = SignalList;
75*b1cdbd2cSJim Jagielski oslSignalAction Action = osl_Signal_ActCallNextHdl;
76*b1cdbd2cSJim Jagielski
77*b1cdbd2cSJim Jagielski while (pHandler != NULL)
78*b1cdbd2cSJim Jagielski {
79*b1cdbd2cSJim Jagielski if ((Action = pHandler->Handler(pHandler->pData, pInfo)) != osl_Signal_ActCallNextHdl)
80*b1cdbd2cSJim Jagielski break;
81*b1cdbd2cSJim Jagielski
82*b1cdbd2cSJim Jagielski pHandler = pHandler->pNext;
83*b1cdbd2cSJim Jagielski }
84*b1cdbd2cSJim Jagielski
85*b1cdbd2cSJim Jagielski return Action;
86*b1cdbd2cSJim Jagielski }
87*b1cdbd2cSJim Jagielski
88*b1cdbd2cSJim Jagielski /*****************************************************************************/
89*b1cdbd2cSJim Jagielski /* SignalHandlerFunction */
90*b1cdbd2cSJim Jagielski /*****************************************************************************/
SignalHandlerFunction(PEXCEPTIONREPORTRECORD pERepRec,PEXCEPTIONREGISTRATIONRECORD pERegRec,PCONTEXTRECORD pConRec,PVOID pReserved)91*b1cdbd2cSJim Jagielski /*static*/ ULONG __declspec(dllexport) APIENTRY SignalHandlerFunction(PEXCEPTIONREPORTRECORD pERepRec,
92*b1cdbd2cSJim Jagielski PEXCEPTIONREGISTRATIONRECORD pERegRec,
93*b1cdbd2cSJim Jagielski PCONTEXTRECORD pConRec, PVOID pReserved)
94*b1cdbd2cSJim Jagielski {
95*b1cdbd2cSJim Jagielski oslSignalInfo Info;
96*b1cdbd2cSJim Jagielski
97*b1cdbd2cSJim Jagielski Info.UserSignal = pERepRec->ExceptionNum;
98*b1cdbd2cSJim Jagielski Info.UserData = NULL;
99*b1cdbd2cSJim Jagielski
100*b1cdbd2cSJim Jagielski switch (pERepRec->ExceptionNum)
101*b1cdbd2cSJim Jagielski {
102*b1cdbd2cSJim Jagielski case XCPT_ACCESS_VIOLATION:
103*b1cdbd2cSJim Jagielski Info.Signal = osl_Signal_AccessViolation;
104*b1cdbd2cSJim Jagielski break;
105*b1cdbd2cSJim Jagielski
106*b1cdbd2cSJim Jagielski case XCPT_INTEGER_DIVIDE_BY_ZERO:
107*b1cdbd2cSJim Jagielski Info.Signal = osl_Signal_IntegerDivideByZero;
108*b1cdbd2cSJim Jagielski break;
109*b1cdbd2cSJim Jagielski
110*b1cdbd2cSJim Jagielski case XCPT_BREAKPOINT:
111*b1cdbd2cSJim Jagielski Info.Signal = osl_Signal_DebugBreak;
112*b1cdbd2cSJim Jagielski break;
113*b1cdbd2cSJim Jagielski
114*b1cdbd2cSJim Jagielski default:
115*b1cdbd2cSJim Jagielski Info.Signal = osl_Signal_System;
116*b1cdbd2cSJim Jagielski break;
117*b1cdbd2cSJim Jagielski }
118*b1cdbd2cSJim Jagielski
119*b1cdbd2cSJim Jagielski switch (CallSignalHandler(&Info))
120*b1cdbd2cSJim Jagielski {
121*b1cdbd2cSJim Jagielski case osl_Signal_ActCallNextHdl:
122*b1cdbd2cSJim Jagielski return (XCPT_CONTINUE_SEARCH);
123*b1cdbd2cSJim Jagielski
124*b1cdbd2cSJim Jagielski case osl_Signal_ActAbortApp:
125*b1cdbd2cSJim Jagielski return (XCPT_CONTINUE_SEARCH);
126*b1cdbd2cSJim Jagielski
127*b1cdbd2cSJim Jagielski case osl_Signal_ActKillApp:
128*b1cdbd2cSJim Jagielski exit(255);
129*b1cdbd2cSJim Jagielski break;
130*b1cdbd2cSJim Jagielski }
131*b1cdbd2cSJim Jagielski
132*b1cdbd2cSJim Jagielski return (XCPT_CONTINUE_SEARCH);
133*b1cdbd2cSJim Jagielski }
134*b1cdbd2cSJim Jagielski
135*b1cdbd2cSJim Jagielski /*****************************************************************************/
136*b1cdbd2cSJim Jagielski /* osl_addSignalHandler */
137*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_addSignalHandler(oslSignalHandlerFunction Handler,void * pData)138*b1cdbd2cSJim Jagielski oslSignalHandler SAL_CALL osl_addSignalHandler(oslSignalHandlerFunction Handler, void* pData)
139*b1cdbd2cSJim Jagielski {
140*b1cdbd2cSJim Jagielski oslSignalHandlerImpl* pHandler;
141*b1cdbd2cSJim Jagielski
142*b1cdbd2cSJim Jagielski OSL_ASSERT(Handler != NULL);
143*b1cdbd2cSJim Jagielski
144*b1cdbd2cSJim Jagielski if (! bInitSignal)
145*b1cdbd2cSJim Jagielski bInitSignal = InitSignal();
146*b1cdbd2cSJim Jagielski
147*b1cdbd2cSJim Jagielski pHandler = (oslSignalHandlerImpl*) calloc(1, sizeof(oslSignalHandlerImpl));
148*b1cdbd2cSJim Jagielski
149*b1cdbd2cSJim Jagielski if (pHandler != NULL)
150*b1cdbd2cSJim Jagielski {
151*b1cdbd2cSJim Jagielski pHandler->Handler = Handler;
152*b1cdbd2cSJim Jagielski pHandler->pData = pData;
153*b1cdbd2cSJim Jagielski
154*b1cdbd2cSJim Jagielski osl_acquireMutex(SignalListMutex);
155*b1cdbd2cSJim Jagielski
156*b1cdbd2cSJim Jagielski pHandler->pNext = SignalList;
157*b1cdbd2cSJim Jagielski SignalList = pHandler;
158*b1cdbd2cSJim Jagielski
159*b1cdbd2cSJim Jagielski osl_releaseMutex(SignalListMutex);
160*b1cdbd2cSJim Jagielski
161*b1cdbd2cSJim Jagielski return (pHandler);
162*b1cdbd2cSJim Jagielski }
163*b1cdbd2cSJim Jagielski
164*b1cdbd2cSJim Jagielski return (NULL);
165*b1cdbd2cSJim Jagielski }
166*b1cdbd2cSJim Jagielski
167*b1cdbd2cSJim Jagielski /*****************************************************************************/
168*b1cdbd2cSJim Jagielski /* osl_removeSignalHandler */
169*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_removeSignalHandler(oslSignalHandler Handler)170*b1cdbd2cSJim Jagielski sal_Bool SAL_CALL osl_removeSignalHandler(oslSignalHandler Handler)
171*b1cdbd2cSJim Jagielski {
172*b1cdbd2cSJim Jagielski oslSignalHandlerImpl *pHandler, *pPrevious = NULL;
173*b1cdbd2cSJim Jagielski
174*b1cdbd2cSJim Jagielski OSL_ASSERT(Handler != NULL);
175*b1cdbd2cSJim Jagielski
176*b1cdbd2cSJim Jagielski if (! bInitSignal)
177*b1cdbd2cSJim Jagielski bInitSignal = InitSignal();
178*b1cdbd2cSJim Jagielski
179*b1cdbd2cSJim Jagielski osl_acquireMutex(SignalListMutex);
180*b1cdbd2cSJim Jagielski
181*b1cdbd2cSJim Jagielski pHandler = SignalList;
182*b1cdbd2cSJim Jagielski
183*b1cdbd2cSJim Jagielski while (pHandler != NULL)
184*b1cdbd2cSJim Jagielski {
185*b1cdbd2cSJim Jagielski if (pHandler == Handler)
186*b1cdbd2cSJim Jagielski {
187*b1cdbd2cSJim Jagielski if (pPrevious)
188*b1cdbd2cSJim Jagielski pPrevious->pNext = pHandler->pNext;
189*b1cdbd2cSJim Jagielski else
190*b1cdbd2cSJim Jagielski SignalList = pHandler->pNext;
191*b1cdbd2cSJim Jagielski
192*b1cdbd2cSJim Jagielski osl_releaseMutex(SignalListMutex);
193*b1cdbd2cSJim Jagielski
194*b1cdbd2cSJim Jagielski if (SignalList == NULL )
195*b1cdbd2cSJim Jagielski bInitSignal = DeInitSignal();
196*b1cdbd2cSJim Jagielski
197*b1cdbd2cSJim Jagielski free(pHandler);
198*b1cdbd2cSJim Jagielski
199*b1cdbd2cSJim Jagielski return (sal_True);
200*b1cdbd2cSJim Jagielski }
201*b1cdbd2cSJim Jagielski
202*b1cdbd2cSJim Jagielski pPrevious = pHandler;
203*b1cdbd2cSJim Jagielski pHandler = pHandler->pNext;
204*b1cdbd2cSJim Jagielski }
205*b1cdbd2cSJim Jagielski
206*b1cdbd2cSJim Jagielski osl_releaseMutex(SignalListMutex);
207*b1cdbd2cSJim Jagielski
208*b1cdbd2cSJim Jagielski return (sal_False);
209*b1cdbd2cSJim Jagielski }
210*b1cdbd2cSJim Jagielski
211*b1cdbd2cSJim Jagielski /*****************************************************************************/
212*b1cdbd2cSJim Jagielski /* osl_raiseSignal */
213*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_raiseSignal(sal_Int32 UserSignal,void * UserData)214*b1cdbd2cSJim Jagielski oslSignalAction SAL_CALL osl_raiseSignal(sal_Int32 UserSignal, void* UserData)
215*b1cdbd2cSJim Jagielski {
216*b1cdbd2cSJim Jagielski oslSignalInfo Info;
217*b1cdbd2cSJim Jagielski oslSignalAction Action;
218*b1cdbd2cSJim Jagielski
219*b1cdbd2cSJim Jagielski if (! bInitSignal)
220*b1cdbd2cSJim Jagielski bInitSignal = InitSignal();
221*b1cdbd2cSJim Jagielski
222*b1cdbd2cSJim Jagielski osl_acquireMutex(SignalListMutex);
223*b1cdbd2cSJim Jagielski
224*b1cdbd2cSJim Jagielski Info.Signal = osl_Signal_User;
225*b1cdbd2cSJim Jagielski Info.UserSignal = UserSignal;
226*b1cdbd2cSJim Jagielski Info.UserData = UserData;
227*b1cdbd2cSJim Jagielski
228*b1cdbd2cSJim Jagielski Action = CallSignalHandler(&Info);
229*b1cdbd2cSJim Jagielski
230*b1cdbd2cSJim Jagielski osl_releaseMutex(SignalListMutex);
231*b1cdbd2cSJim Jagielski
232*b1cdbd2cSJim Jagielski return (Action);
233*b1cdbd2cSJim Jagielski }
234*b1cdbd2cSJim Jagielski
235*b1cdbd2cSJim Jagielski /*****************************************************************************/
236*b1cdbd2cSJim Jagielski /* osl_setErrorReporting */
237*b1cdbd2cSJim Jagielski /*****************************************************************************/
osl_setErrorReporting(sal_Bool bEnable)238*b1cdbd2cSJim Jagielski sal_Bool SAL_CALL osl_setErrorReporting( sal_Bool bEnable )
239*b1cdbd2cSJim Jagielski {
240*b1cdbd2cSJim Jagielski sal_Bool bOld = bErrorReportingEnabled;
241*b1cdbd2cSJim Jagielski bErrorReportingEnabled = bEnable;
242*b1cdbd2cSJim Jagielski
243*b1cdbd2cSJim Jagielski return bOld;
244*b1cdbd2cSJim Jagielski }
245*b1cdbd2cSJim Jagielski
246