dlls/kernel32/powermgnt.c

   1 /*
   2  * Copyright 1995 Thomas Sandford (tdgsandf@prds-grn.demon.co.uk)
   3  * Copyright 2003 Dimitrie O. Paun
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include <stdarg.h>
  21
  22 #define NONAMELESSUNION
  23 #define NONAMELESSSTRUCT
  24 #include "ntstatus.h"
  25 #define WIN32_NO_STATUS
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winternl.h"
  29 #include "wine/debug.h"
  30 #include "wine/heap.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(powermgnt);
  33
  34 /******************************************************************************
  35  *           GetDevicePowerState   (KERNEL32.@)
  36  */
  37 BOOL WINAPI GetDevicePowerState(HANDLE hDevice, BOOL* pfOn)
  38 {
  39     WARN("(hDevice %p pfOn %p): stub\n", hDevice, pfOn);
  40     return TRUE; /* no information */
  41 }
  42
  43 /***********************************************************************
  44  *           GetSystemPowerStatus      (KERNEL32.@)
  45  */
  46 BOOL WINAPI GetSystemPowerStatus(LPSYSTEM_POWER_STATUS ps)
  47 {
  48     SYSTEM_BATTERY_STATE bs;
  49     NTSTATUS status;
  50
  51     TRACE("(%p)\n", ps);
  52
  53     ps->ACLineStatus        = AC_LINE_UNKNOWN;
  54     ps->BatteryFlag         = BATTERY_FLAG_UNKNOWN;
  55     ps->BatteryLifePercent  = BATTERY_PERCENTAGE_UNKNOWN;
  56     ps->SystemStatusFlag    = 0;
  57     ps->BatteryLifeTime     = BATTERY_LIFE_UNKNOWN;
  58     ps->BatteryFullLifeTime = BATTERY_LIFE_UNKNOWN;
  59
  60     status = NtPowerInformation(SystemBatteryState, NULL, 0, &bs, sizeof(bs));
  61     if (status == STATUS_NOT_IMPLEMENTED) return TRUE;
  62     if (FAILED(status)) return FALSE;
  63
  64     ps->ACLineStatus = bs.AcOnLine;
  65
  66     if (bs.BatteryPresent)
  67     {
  68         ps->BatteryLifePercent = bs.MaxCapacity ? bs.RemainingCapacity / bs.MaxCapacity : 100;
  69         ps->BatteryLifeTime = bs.EstimatedTime;
  70         if (!bs.Charging && (LONG)bs.Rate < 0)
  71             ps->BatteryFullLifeTime = 3600 * bs.MaxCapacity / -(LONG)bs.Rate;
  72
  73         ps->BatteryFlag = 0;
  74         if (bs.Charging)
  75             ps->BatteryFlag |= BATTERY_FLAG_CHARGING;
  76         if (ps->BatteryLifePercent > 66)
  77             ps->BatteryFlag |= BATTERY_FLAG_HIGH;
  78         if (ps->BatteryLifePercent < 33)
  79             ps->BatteryFlag |= BATTERY_FLAG_LOW;
  80         if (ps->BatteryLifePercent < 5)
  81             ps->BatteryFlag |= BATTERY_FLAG_CRITICAL;
  82     }
  83     else
  84     {
  85         ps->BatteryFlag = BATTERY_FLAG_NO_BATTERY;
  86     }
  87
  88     return TRUE;
  89 }
  90
  91 /***********************************************************************
  92  *           IsSystemResumeAutomatic   (KERNEL32.@)
  93  */
  94 BOOL WINAPI IsSystemResumeAutomatic(void)
  95 {
  96     WARN("(): stub, harmless.\n");
  97     return FALSE;
  98 }
  99
 100 /***********************************************************************
 101  *           RequestWakeupLatency      (KERNEL32.@)
 102  */
 103 BOOL WINAPI RequestWakeupLatency(LATENCY_TIME latency)
 104 {
 105     WARN("(): stub, harmless.\n");
 106     return TRUE;
 107 }
 108
 109 /***********************************************************************
 110  *           RequestDeviceWakeup      (KERNEL32.@)
 111  */
 112 BOOL WINAPI RequestDeviceWakeup(HANDLE device)
 113 {
 114     FIXME("(%p): stub\n", device);
 115     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
 116     return FALSE;
 117 }
 118
 119 /***********************************************************************
 120  *           SetSystemPowerState      (KERNEL32.@)
 121  */
 122 BOOL WINAPI SetSystemPowerState(BOOL suspend_or_hibernate,
 123                                   BOOL force_flag)
 124 {
 125     WARN("(): stub, harmless.\n");
 126     return TRUE;
 127 }
 128
 129 /***********************************************************************
 130  * SetThreadExecutionState (KERNEL32.@)
 131  *
 132  * Informs the system that activity is taking place for
 133  * power management purposes.
 134  */
 135 EXECUTION_STATE WINAPI SetThreadExecutionState(EXECUTION_STATE flags)
 136 {
 137     EXECUTION_STATE old;
 138
 139     NtSetThreadExecutionState(flags, &old);
 140
 141     return old;
 142 }
 143
 144 /***********************************************************************
 145  *           PowerCreateRequest      (KERNEL32.@)
 146  */
 147 HANDLE WINAPI PowerCreateRequest(REASON_CONTEXT *context)
 148 {
 149     COUNTED_REASON_CONTEXT nt_context;
 150     HANDLE handle;
 151     NTSTATUS status;
 152     WCHAR module_name[MAX_PATH];
 153
 154     TRACE( "(%p)\n", context );
 155
 156     nt_context.Version = context->Version;
 157     nt_context.Flags = context->Flags;
 158     if (context->Flags & POWER_REQUEST_CONTEXT_SIMPLE_STRING)
 159         RtlInitUnicodeString( &nt_context.u.SimpleString, context->Reason.SimpleReasonString );
 160     else if (context->Flags & POWER_REQUEST_CONTEXT_DETAILED_STRING)
 161     {
 162         int i;
 163
 164         GetModuleFileNameW( context->Reason.Detailed.LocalizedReasonModule, module_name, ARRAY_SIZE(module_name) );
 165         RtlInitUnicodeString( &nt_context.u.s.ResourceFileName, module_name );
 166         nt_context.u.s.ResourceReasonId = context->Reason.Detailed.LocalizedReasonId;
 167         nt_context.u.s.StringCount = context->Reason.Detailed.ReasonStringCount;
 168         nt_context.u.s.ReasonStrings = heap_alloc( nt_context.u.s.StringCount * sizeof(UNICODE_STRING) );
 169         for (i = 0; i < nt_context.u.s.StringCount; i++)
 170             RtlInitUnicodeString( &nt_context.u.s.ReasonStrings[i], context->Reason.Detailed.ReasonStrings[i] );
 171     }
 172
 173     status = NtCreatePowerRequest( &handle, &nt_context );
 174     if (nt_context.Flags & POWER_REQUEST_CONTEXT_DETAILED_STRING)
 175         heap_free( nt_context.u.s.ReasonStrings );
 176     if (status)
 177         SetLastError( RtlNtStatusToDosError(status) );
 178     return status == STATUS_SUCCESS ? handle : INVALID_HANDLE_VALUE;
 179 }
 180
 181 /***********************************************************************
 182  *           PowerSetRequest      (KERNEL32.@)
 183  */
 184 BOOL WINAPI PowerSetRequest(HANDLE request, POWER_REQUEST_TYPE type)
 185 {
 186     NTSTATUS status = NtSetPowerRequest( request, type );
 187     if (status)
 188         SetLastError( RtlNtStatusToDosError(status) );
 189     return status == STATUS_SUCCESS;
 190 }
 191
 192 /***********************************************************************
 193  *           PowerClearRequest      (KERNEL32.@)
 194  */
 195 BOOL WINAPI PowerClearRequest(HANDLE request, POWER_REQUEST_TYPE type)
 196 {
 197     NTSTATUS status = NtClearPowerRequest( request, type );
 198     if (status)
 199         SetLastError( RtlNtStatusToDosError(status) );
 200     return status == STATUS_SUCCESS;
 201 }