1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 #include "system.h" 25 26 #include <osl/conditn.h> 27 #include <osl/diagnose.h> 28 #include <osl/time.h> 29 30 31 32 /* 33 under WIN32, we use the void* oslCondition 34 as a WIN32 HANDLE (which is also a 32-bit value) 35 */ 36 37 /*****************************************************************************/ 38 /* osl_createCondition */ 39 /*****************************************************************************/ 40 oslCondition SAL_CALL osl_createCondition() 41 { 42 HEV hevCondition; 43 APIRET rc; 44 45 rc = DosCreateEventSem( NULL, /* unnamed semaphore */ 46 &hevCondition, /* pointer to variable */ 47 /* for the sem-handle */ 48 DC_SEM_SHARED, /* shared semaphore */ 49 FALSE ); /* initial state is posted */ 50 51 if( rc == NO_ERROR ) 52 return (oslCondition)hevCondition; 53 else 54 return NULL; 55 } 56 57 /*****************************************************************************/ 58 /* osl_destroyCondition */ 59 /*****************************************************************************/ 60 void SAL_CALL osl_destroyCondition(oslCondition Condition) 61 { 62 if( Condition ) 63 DosCloseEventSem( (HEV) Condition ); 64 } 65 66 /*****************************************************************************/ 67 /* osl_setCondition */ 68 /*****************************************************************************/ 69 sal_Bool SAL_CALL osl_setCondition(oslCondition Condition) 70 { 71 OSL_ASSERT(Condition); 72 73 return DosPostEventSem((HEV)Condition) == NO_ERROR; 74 } 75 76 /*****************************************************************************/ 77 /* osl_resetCondition */ 78 /*****************************************************************************/ 79 sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition) 80 { 81 ULONG ulPostCount; 82 83 OSL_ASSERT(Condition); 84 85 return DosResetEventSem((HEV)Condition, &ulPostCount) == NO_ERROR; 86 } 87 88 /*****************************************************************************/ 89 /* osl_waitCondition */ 90 /*****************************************************************************/ 91 oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue * pTimeout ) 92 { 93 long nTimeout; 94 APIRET rc; 95 OSL_ASSERT(Condition); 96 97 if( pTimeout ) 98 nTimeout = pTimeout->Seconds * 1000 + pTimeout->Nanosec / 1000000; 99 else 100 nTimeout = SEM_INDEFINITE_WAIT; 101 102 rc = DosWaitEventSem((HEV)Condition, nTimeout ); 103 if( rc == ERROR_TIMEOUT ) 104 return osl_cond_result_timeout; 105 if( rc != NO_ERROR ) 106 return osl_cond_result_error; 107 108 return osl_cond_result_ok; 109 } 110 111 /*****************************************************************************/ 112 /* osl_checkCondition */ 113 /*****************************************************************************/ 114 sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition) 115 { 116 OSL_ASSERT(Condition); 117 118 return( DosWaitEventSem((HEV)Condition, SEM_IMMEDIATE_RETURN) == NO_ERROR); 119 } 120 121