reactos/lib/kernel32/synch/event.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS system libraries
   4  * FILE:            lib/kernel32/synch/event.c
   5  * PURPOSE:         Local string functions
   6  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
   7  * UPDATE HISTORY:
   8  *                  Created 01/11/98
   9  */
  10
  11 #include <ddk/ntddk.h>
  12 #include <windows.h>
  13 #include <wchar.h>
  14
  15
  16 WINBOOL
  17 STDCALL
  18 SetEvent(
  19          HANDLE hEvent
  20          )
  21 {
  22         NTSTATUS errCode;
  23         ULONG Count;
  24         errCode = NtSetEvent(hEvent,&Count);
  25         if ( !NT_SUCCESS(errCode) ) {
  26                 SetLastError(RtlNtStatusToDosError(errCode));
  27                 return FALSE;
  28         }
  29         return TRUE;
  30 }
  31
  32 WINBOOL
  33 STDCALL
  34 ResetEvent(
  35            HANDLE hEvent
  36            )
  37 {
  38         NTSTATUS errCode;
  39         ULONG Count;
  40         errCode = NtResetEvent(hEvent, &Count);
  41         if ( !NT_SUCCESS(errCode) ) {
  42                 SetLastError(RtlNtStatusToDosError(errCode));
  43                 return FALSE;
  44         }
  45         return TRUE;
  46 }
  47
  48
  49
  50 HANDLE
  51 STDCALL
  52 CreateEventW(
  53     LPSECURITY_ATTRIBUTES lpEventAttributes,
  54     WINBOOL bManualReset,
  55     WINBOOL bInitialState,
  56     LPCWSTR lpName
  57     )
  58 {
  59         NTSTATUS errCode;
  60         HANDLE hEvent;
  61         UNICODE_STRING EventNameString;
  62         OBJECT_ATTRIBUTES ObjectAttributes;
  63         ObjectAttributes.Attributes = 0;
  64         if ( lpEventAttributes != NULL ) {
  65                 ObjectAttributes.SecurityDescriptor = lpEventAttributes->lpSecurityDescriptor;
  66                 if ( lpEventAttributes->bInheritHandle == TRUE )
  67                         ObjectAttributes.Attributes |= OBJ_INHERIT;
  68
  69         }
  70
  71
  72         if(lpName != NULL) {
  73                 EventNameString.Buffer = (WCHAR *)lpName;
  74                 EventNameString.Length = lstrlenW(lpName)*sizeof(WCHAR);
  75                 EventNameString.MaximumLength = EventNameString.Length;
  76                 ObjectAttributes.ObjectName = &EventNameString;
  77         }
  78         else
  79                 ObjectAttributes.ObjectName = NULL;
  80
  81
  82
  83         errCode = NtCreateEvent(&hEvent,STANDARD_RIGHTS_ALL|EVENT_READ_ACCESS|EVENT_WRITE_ACCESS,&ObjectAttributes,bManualReset,bInitialState);
  84         if(!NT_SUCCESS(errCode)) {
  85                 SetLastError(RtlNtStatusToDosError(errCode));
  86                 return NULL;
  87         }
  88
  89
  90         return hEvent;
  91 }
  92
  93
  94 HANDLE
  95 STDCALL
  96 OpenEventW(
  97     DWORD dwDesiredAccess,
  98     WINBOOL bInheritHandle,
  99     LPCWSTR lpName
 100     )
 101 {
 102         OBJECT_ATTRIBUTES ObjectAttributes;
 103         UNICODE_STRING EventNameString;
 104         NTSTATUS errCode;
 105         HANDLE hEvent = NULL;
 106
 107         if(lpName == NULL) {
 108                 SetLastError(ERROR_INVALID_PARAMETER);
 109                 return NULL;
 110         }
 111
 112         ObjectAttributes.Attributes = 0;
 113         ObjectAttributes.SecurityDescriptor = NULL;
 114         EventNameString.Buffer = (WCHAR *)lpName;
 115         EventNameString.Length = lstrlenW(lpName)*sizeof(WCHAR);
 116         EventNameString.MaximumLength = EventNameString.Length;
 117         ObjectAttributes.ObjectName = &EventNameString;
 118
 119         if (bInheritHandle == TRUE )
 120                 ObjectAttributes.Attributes |= OBJ_INHERIT;
 121
 122
 123         errCode = NtOpenEvent(hEvent,dwDesiredAccess,&ObjectAttributes);
 124         if ( !NT_SUCCESS(errCode) ) {
 125                 SetLastError(RtlNtStatusToDosError(errCode));
 126                 return NULL;
 127         }
 128
 129         return hEvent;
 130 }
 131
 132
 133 HANDLE
 134 STDCALL
 135 CreateEventA(
 136     LPSECURITY_ATTRIBUTES lpEventAttributes,
 137     WINBOOL bManualReset,
 138     WINBOOL bInitialState,
 139     LPCSTR lpName
 140     )
 141 {
 142         int i;
 143         WCHAR EventNameW[MAX_PATH];
 144         i = 0;
 145         while ((*lpName)!=0 && i < MAX_PATH)
 146         {
 147                 EventNameW[i] = *lpName;
 148                 lpName++;
 149                 i++;
 150         }
 151         EventNameW[i] = 0;
 152
 153         return CreateEventW(lpEventAttributes,bManualReset,bInitialState,EventNameW);
 154 }
 155
 156
 157 HANDLE
 158 STDCALL
 159 OpenEventA(
 160     DWORD dwDesiredAccess,
 161     WINBOOL bInheritHandle,
 162     LPCSTR lpName
 163     )
 164 {
 165         ULONG i;
 166         WCHAR EventNameW[MAX_PATH];
 167
 168
 169
 170         i = 0;
 171         while ((*lpName)!=0 && i < MAX_PATH)
 172         {
 173                 EventNameW[i] = *lpName;
 174                 lpName++;
 175                 i++;
 176         }
 177         EventNameW[i] = 0;
 178
 179
 180         return OpenEventW(dwDesiredAccess,bInheritHandle,EventNameW);
 181 }
 182
 183 WINBOOL
 184 STDCALL
 185 PulseEvent(
 186            HANDLE hEvent
 187            )
 188 {
 189         ULONG Count;
 190         NTSTATUS errCode;
 191         errCode = NtPulseEvent(hEvent,&Count);
 192         if ( !NT_SUCCESS(errCode) ) {
 193                 SetLastError(RtlNtStatusToDosError(errCode));
 194                 return FALSE;
 195         }
 196         return TRUE;
 197 }