| -rw-r--r-- | libopie/odevice.cpp | 38 |
1 files changed, 14 insertions, 24 deletions
diff --git a/libopie/odevice.cpp b/libopie/odevice.cpp index 2d2f7db..d8415ad 100644 --- a/libopie/odevice.cpp +++ b/libopie/odevice.cpp @@ -200,31 +200,21 @@ bool ODevice::suspend ( ) 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 ); + struct timeval tvs, tvn; + ::gettimeofday ( &tvs, 0 ); - ::sync ( ); // flush fs caches - - res = ( ::ioctl ( fd, APM_IOC_SUSPEND, 0 ) == 0 ); // tell the kernel to "start" suspending - ::close ( fd ); - - if ( res ) { -// ::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 - } - -// ::signal ( SIGTSTP, SIG_DFL ); + ::sync ( ); // flush fs caches + res = ( ::system ( "apm --suspend" ) == 0 ); + + // This is needed because the iPAQ apm implementation is asynchronous and we + // can not be sure when exactly the device is really suspended + // This can be deleted as soon as a stable familiar with a synchronous apm implementation exists. + + if ( res ) { + 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 ); } |