scheduler/timer.c

   1 /*
   2  * Win32 waitable timers
   3  *
   4  * Copyright 1999 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <string.h>
  26 #include "winerror.h"
  27 #include "winnls.h"
  28 #include "wine/unicode.h"
  29 #include "file.h"  /* for FILETIME routines */
  30 #include "wine/server.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(timer);
  34
  35
  36 /***********************************************************************
  37  *           CreateWaitableTimerA    (KERNEL32.@)
  38  */
  39 HANDLE WINAPI CreateWaitableTimerA( SECURITY_ATTRIBUTES *sa, BOOL manual, LPCSTR name )
  40 {
  41     WCHAR buffer[MAX_PATH];
  42
  43     if (!name) return CreateWaitableTimerW( sa, manual, NULL );
  44
  45     if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
  46     {
  47         SetLastError( ERROR_FILENAME_EXCED_RANGE );
  48         return 0;
  49     }
  50     return CreateWaitableTimerW( sa, manual, buffer );
  51 }
  52
  53
  54 /***********************************************************************
  55  *           CreateWaitableTimerW    (KERNEL32.@)
  56  */
  57 HANDLE WINAPI CreateWaitableTimerW( SECURITY_ATTRIBUTES *sa, BOOL manual, LPCWSTR name )
  58 {
  59     HANDLE ret;
  60     DWORD len = name ? strlenW(name) : 0;
  61     if (len >= MAX_PATH)
  62     {
  63         SetLastError( ERROR_FILENAME_EXCED_RANGE );
  64         return 0;
  65     }
  66     SERVER_START_REQ( create_timer )
  67     {
  68         req->manual  = manual;
  69         req->inherit = (sa && (sa->nLength>=sizeof(*sa)) && sa->bInheritHandle);
  70         wine_server_add_data( req, name, len * sizeof(WCHAR) );
  71         SetLastError(0);
  72         wine_server_call_err( req );
  73         ret = reply->handle;
  74     }
  75     SERVER_END_REQ;
  76     return ret;
  77 }
  78
  79
  80 /***********************************************************************
  81  *           OpenWaitableTimerA    (KERNEL32.@)
  82  */
  83 HANDLE WINAPI OpenWaitableTimerA( DWORD access, BOOL inherit, LPCSTR name )
  84 {
  85     WCHAR buffer[MAX_PATH];
  86
  87     if (!name) return OpenWaitableTimerW( access, inherit, NULL );
  88
  89     if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
  90     {
  91         SetLastError( ERROR_FILENAME_EXCED_RANGE );
  92         return 0;
  93     }
  94     return OpenWaitableTimerW( access, inherit, buffer );
  95 }
  96
  97
  98 /***********************************************************************
  99  *           OpenWaitableTimerW    (KERNEL32.@)
 100  */
 101 HANDLE WINAPI OpenWaitableTimerW( DWORD access, BOOL inherit, LPCWSTR name )
 102 {
 103     HANDLE ret;
 104     DWORD len = name ? strlenW(name) : 0;
 105     if (len >= MAX_PATH)
 106     {
 107         SetLastError( ERROR_FILENAME_EXCED_RANGE );
 108         return 0;
 109     }
 110     SERVER_START_REQ( open_timer )
 111     {
 112         req->access  = access;
 113         req->inherit = inherit;
 114         wine_server_add_data( req, name, len * sizeof(WCHAR) );
 115         wine_server_call_err( req );
 116         ret = reply->handle;
 117     }
 118     SERVER_END_REQ;
 119     return ret;
 120 }
 121
 122
 123 /***********************************************************************
 124  *           SetWaitableTimer    (KERNEL32.@)
 125  */
 126 BOOL WINAPI SetWaitableTimer( HANDLE handle, const LARGE_INTEGER *when, LONG period,
 127                               PTIMERAPCROUTINE callback, LPVOID arg, BOOL resume )
 128 {
 129     BOOL ret;
 130     LARGE_INTEGER exp = *when;
 131
 132     if (exp.s.HighPart < 0)  /* relative time */
 133     {
 134         LARGE_INTEGER now;
 135         NtQuerySystemTime( &now );
 136         exp.QuadPart = RtlLargeIntegerSubtract( now.QuadPart, exp.QuadPart );
 137     }
 138
 139     SERVER_START_REQ( set_timer )
 140     {
 141         if (!exp.s.LowPart && !exp.s.HighPart)
 142         {
 143             /* special case to start timeout on now+period without too many calculations */
 144             req->sec  = 0;
 145             req->usec = 0;
 146         }
 147         else
 148         {
 149             DWORD remainder;
 150             FILETIME ft;
 151
 152             ft.dwLowDateTime    = exp.s.LowPart;
 153             ft.dwHighDateTime   = exp.s.HighPart;
 154             req->sec  = DOSFS_FileTimeToUnixTime( &ft, &remainder );
 155             req->usec = remainder / 10;  /* convert from 100-ns to us units */
 156         }
 157         req->handle   = handle;
 158         req->period   = period;
 159         req->callback = callback;
 160         req->arg      = arg;
 161         if (resume) SetLastError( ERROR_NOT_SUPPORTED ); /* set error but can still succeed */
 162         ret = !wine_server_call_err( req );
 163     }
 164     SERVER_END_REQ;
 165     return ret;
 166 }
 167
 168
 169 /***********************************************************************
 170  *           CancelWaitableTimer    (KERNEL32.@)
 171  */
 172 BOOL WINAPI CancelWaitableTimer( HANDLE handle )
 173 {
 174     BOOL ret;
 175     SERVER_START_REQ( cancel_timer )
 176     {
 177         req->handle = handle;
 178         ret = !wine_server_call_err( req );
 179     }
 180     SERVER_END_REQ;
 181     return ret;
 182 }
 183
 184
 185 /***********************************************************************
 186  *           CreateTimerQueueTimer  (KERNEL32.@)
 187  *
 188  * Creates a timer-queue timer. This timer expires at the specified due
 189  * time (in ms), then after every specified period (in ms). When the timer
 190  * expires, the callback function is called.
 191  *
 192  * RETURNS
 193  *   nonzero on success or zero on faillure
 194  *
 195  * BUGS
 196  *   Unimplemented
 197  */
 198 BOOL WINAPI CreateTimerQueueTimer( PHANDLE phNewTimer, HANDLE TimerQueue,
 199                                    WAITORTIMERCALLBACK Callback, PVOID Parameter,
 200                                    DWORD DueTime, DWORD Period, ULONG Flags )
 201 {
 202     FIXME("stub\n");
 203     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 204     return TRUE;
 205 }
 206
 207 /***********************************************************************
 208  *           DeleteTimerQueueTimer  (KERNEL32.@)
 209  *
 210  * Cancels a timer-queue timer.
 211  *
 212  * RETURNS
 213  *   nonzero on success or zero on faillure
 214  *
 215  * BUGS
 216  *   Unimplemented
 217  */
 218 BOOL WINAPI DeleteTimerQueueTimer( HANDLE TimerQueue, HANDLE Timer,
 219                                    HANDLE CompletionEvent )
 220 {
 221     FIXME("stub\n");
 222     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 223     return TRUE;
 224 }