suspend code now also calls sync() to flush fs caches (just like apm tool)

1 files changed, 4 insertions, 2 deletions

diff --git a/libopie/odevice.cpp b/libopie/odevice.cpp
index 1da8862..2f40731 100644
--- a/libopie/odevice.cpp
+++ b/libopie/odevice.cpp
@@ -53,206 +53,208 @@ public:
         
         OLedState m_leds [4]; // just for convenience ...
 };
 
 class ODeviceIPAQ : public ODevice {
 protected: 
         virtual void init ( );
         
 public:
         virtual void alarmSound ( );
 
         virtual uint hasLeds ( ) const;
         virtual OLedState led ( uint which ) const;
                 virtual bool setLed ( uint which, OLedState st );
 };
 
 class ODeviceZaurus : public ODevice {
 protected:
         virtual void init ( );
 
         public:
         virtual void alarmSound ( );
         virtual void keySound ( );
                 virtual void touchSound ( );
 
         virtual uint hasLeds ( ) const;
         virtual OLedState led ( uint which ) const;
                 virtual bool setLed ( uint which, OLedState st );
         
 protected:
         virtual void buzzer ( int snd );
 };
 
 
 
 
 ODevice *ODevice::inst ( )
 {
         static ODevice *dev = 0;
         
         if ( !dev ) {
                 if ( QFile::exists ( "/proc/hal/model" ))
                         dev = new ODeviceIPAQ ( );
                 else if ( QFile::exists ( "/dev/sharp_buz" ) || QFile::exists ( "/dev/sharp_led" ))
                         dev = new ODeviceZaurus ( );
                 else
                         dev = new ODevice ( );
                         
                 dev-> init ( );
         }
         return dev;
 }
 
 ODevice::ODevice ( )
 {
         d = new ODeviceData;
 
         d-> m_modelstr = "Unknown";
         d-> m_model = OMODEL_Unknown;
         d-> m_vendorstr = "Unkown";
         d-> m_vendor = OVENDOR_Unknown;
         d-> m_systemstr = "Unkown";
         d-> m_system = OSYSTEM_Unknown;
         d-> m_sysverstr = "0.0";
 }
 
 void ODevice::init ( )
 {
 }
 
 ODevice::~ODevice ( )
 {
         delete d;
 }
 
 //#include <linux/apm_bios.h>
 
 //#define APM_IOC_SUSPEND        _IO('A',2)
 
 #define APM_IOC_SUSPEND          (( 0<<30 ) | ( 'A'<<8 ) | ( 2 ) | ( 0<<16 ))
 
 bool ODevice::suspend ( )
 {
         if ( d-> m_model == OMODEL_Unknown ) // better don't suspend in qvfb / on unkown devices
                 return false;
 
         int fd;
         bool res = false;
         
         if ((( fd = ::open ( "/dev/apm_bios", O_RDWR )) >= 0 ) ||
                     (( fd = ::open ( "/dev/misc/apm_bios",O_RDWR )) >= 0 )) {
                 struct timeval tvs, tvn;
 
                         ::signal ( SIGTSTP, SIG_IGN );// we don't want to be stopped
                 ::gettimeofday ( &tvs, 0 );
         
+                ::sync ( ); // flush fs caches
+        
                 res = ( ::ioctl ( fd, APM_IOC_SUSPEND ) == 0 ); // tell the kernel to "start" suspending
-                ::close ( fd );
 
                         if ( res ) {
-                        ::kill ( -::getpid ( ), SIGTSTP ); // stop everthing in out process group
+                        ::kill ( -::getpid ( ), SIGTSTP ); // stop everthing in our process group
 
                         do { // wait at most 1.5 sec: either suspend didn't work or the device resumed
                                 ::usleep ( 200 * 1000 );
                                         ::gettimeofday ( &tvn, 0 );                     
                         } while ((( tvn. tv_sec - tvs. tv_sec ) * 1000 + ( tvn. tv_usec - tvs. tv_usec ) / 1000 ) < 1500 );
                         
                         ::kill ( -::getpid ( ), SIGCONT ); // continue everything in our process group
                         }
                 
+                        ::close ( fd );         
                 ::signal ( SIGTSTP, SIG_DFL );
         }
         
         return res;
 }
 
 
 QString ODevice::vendorString ( )
 {
         return d-> m_vendorstr;
 }
 
 OVendor ODevice::vendor ( )
 {
         return d-> m_vendor;
 }
 
 QString ODevice::modelString ( )
 {
         return d-> m_modelstr;
 }
 
 OModel ODevice::model ( )
 {
         return d-> m_model;
 }
 
 QString ODevice::systemString ( )
 {
         return d-> m_systemstr;
 }
 
 OSystem ODevice::system ( )
 {
         return d-> m_system;
 }
 
 QString ODevice::systemVersionString ( )
 {
         return d-> m_sysverstr;
 }
 
 void ODevice::alarmSound ( )
 {
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
         static Sound snd ( "alarm" );
 
         if ( snd. isFinished ( ))
                 snd. play ( );
 #endif
 #endif
 }
 
 void ODevice::keySound ( )
 {
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
         static Sound snd ( "keysound" );
 
         if ( snd. isFinished ( ))
                 snd. play ( );
 #endif
 #endif
 }
 
 void ODevice::touchSound ( )
 {
 
 #ifndef QT_QWS_EBX
 #ifndef QT_NO_SOUND
         static Sound snd ( "touchsound" );
 //qDebug("touchSound");
         if ( snd. isFinished ( )) {
                 snd. play ( );
         //      qDebug("sound should play");
                 }
 #endif
 #endif
 }
 
 uint ODevice::hasLeds ( ) const
 {
         return 0;
 }
 
 OLedState ODevice::led ( uint /*which*/ ) const
 {
         return OLED_Off;
 }
 
 bool ODevice::setLed ( uint /*which*/, OLedState /*st*/ )
 {
         return false;
 }