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improvements to probe and copy stuff. 

* include/GParted_Core.h,
  src/GParted_Core.cc: improvements to probe and copy stuff.
This commit is contained in:
Bart Hakvoort 2006-08-26 14:37:06 +00:00
parent 79c41f7be5
commit 5060b1a07c
3 changed files with 70 additions and 73 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2006-08-24 Bart Hakvoort <hakvoort@cvs.gnome.org>
* include/GParted_Core.h,
src/GParted_Core.cc: improvements to probe and copy stuff.
2006-08-24 Bart Hakvoort <hakvoort@cvs.gnome.org>
* src/GParted_Core.cc: use Glib::timer instead of std::time stuff for

2
include/GParted_Core.h
View File

@ -120,7 +120,7 @@ private:
bool set_partition_type( const Partition & partition, OperationDetail & operationdetail ) ;
void set_progress_info( Sector total, Sector done, std::time_t time_start, OperationDetail & operationdetail ) ;
void set_progress_info( Sector total, Sector done, const Glib::Timer & timer, OperationDetail & operationdetail ) ;
enum CopyType
{

136
src/GParted_Core.cc
View File

@ -1061,7 +1061,7 @@ bool GParted_Core::Delete( const Partition & partition, OperationDetail & operat
else
lp_partition = ped_disk_get_partition_by_sector( lp_disk, partition .get_sector() ) ;
return_value = ped_disk_delete_partition( lp_disk, lp_partition ) && commit() ;
return_value = ped_disk_delete_partition( lp_disk, lp_partition ) && commit( partition .device_path ) ;
close_device_and_disk() ;
}
@ -1098,7 +1098,7 @@ bool GParted_Core::resize_move( const Device & device,
//first shrink, then move..
Partition temp = partition_old ;
temp .sector_end = partition_old .sector_start + partition_new .get_length() -1 ;
//FIXME: shrink and move of fat32 fs in 1 operation throws path not found errors
return calculate_exact_geom( partition_old, temp, operationdetail ) &&
resize( partition_old, temp, operationdetail ) &&
calculate_exact_geom( temp, partition_new, operationdetail, temp .get_length() ) &&
@ -1630,12 +1630,12 @@ bool GParted_Core::set_partition_type( const Partition & partition, OperationDet
void GParted_Core::set_progress_info( Sector total,
Sector done,
std::time_t time_start,
const Glib::Timer & timer,
OperationDetail & operationdetail )
{
operationdetail .fraction = done / static_cast<double>( total ) ;
double sec_per_frac = (std::time( NULL ) - time_start) / static_cast<double>( operationdetail .fraction ) ;
double sec_per_frac = timer .elapsed() / operationdetail .fraction ;
std::time_t time_remaining = Utils::round( (1.0 - operationdetail .fraction) * sec_per_frac ) ;
@ -1653,63 +1653,54 @@ bool GParted_Core::find_optimal_blocksize( const Partition & partition_old,
Sector & optimal_blocksize,
Sector & offset,
OperationDetail & operationdetail )
{//FIXME, this probing is actually quite clumsy and suboptimal..
//find out if there is a better way to determine a (close to) optimal blocksize...
{
//FIXME: find out if there is a better way to determine a (close to) optimal blocksize...
bool succes = true ;
optimal_blocksize = 32 ;//sensible default?
offset = 0 ;
operationdetail .add_child( OperationDetail( _("finding optimal blocksize"), STATUS_NONE ) ) ;
if ( partition_old .get_length() > 100000 )
{
operationdetail .add_child( OperationDetail( _("finding optimal blocksize"), STATUS_NONE ) ) ;
Glib::Timer timer ;
double smallest_time = -1 ;
std::vector<Sector> blocksizes ;
blocksizes .push_back( 1 ) ;
blocksizes .push_back( 32 ) ;
blocksizes .push_back( 128 ) ;
blocksizes .push_back( 256 ) ;
blocksizes .push_back( 512 ) ;
for ( unsigned int t = 0 ; t < blocksizes .size() && succes ; t++ )
{
timer .reset() ;
timer .start() ;
succes = copy_blocks( partition_old .device_path,
partition_new .device_path,
partition_old .sector_start + offset,
partition_new .sector_start + offset,
blocksizes[ t ],
20000,
operationdetail .get_last_child(),
copytype ) ;
timer .stop() ;
if ( timer .elapsed() < smallest_time || smallest_time == -1 )
{
smallest_time = timer .elapsed() ;
optimal_blocksize = blocksizes[ t ] ;
}
operationdetail .get_last_child() .get_last_child() .add_child( OperationDetail(
String::ucompose( _("%1 seconds"), timer .elapsed() ),
STATUS_NONE,
FONT_ITALIC ) ) ;
offset += 20000 ;
}
operationdetail .get_last_child() .add_child( OperationDetail(
String::ucompose( _("optimal blocksize is %1 sectors (%2)"),
optimal_blocksize,
Utils::format_size( optimal_blocksize ) ) ,
STATUS_NONE ) ) ;
}
optimal_blocksize = 64 ;
double smallest_time = 1000000 ;
Sector N = 32768 ;
Glib::Timer timer ;
for ( offset = 0 ;
succes &&
timer .elapsed() <= smallest_time &&
optimal_blocksize *2 < N &&
offset + N < partition_old .get_length() ;
offset += N )
{
if ( offset > 0 )
{
smallest_time = timer .elapsed() ;
optimal_blocksize *= 2 ;
}
timer .reset() ;
succes = copy_blocks( partition_old .device_path,
partition_new .device_path,
partition_old .sector_start + offset,
partition_new .sector_start + offset,
optimal_blocksize,
N,
operationdetail .get_last_child(),
copytype ) ;
timer .stop() ;
operationdetail .get_last_child() .get_last_child() .add_child( OperationDetail(
String::ucompose( _("%1 seconds"), timer .elapsed() ), STATUS_NONE, FONT_ITALIC ) ) ;
}
if ( timer .elapsed() > smallest_time )
optimal_blocksize /= 2 ;
operationdetail .get_last_child() .add_child( OperationDetail(
String::ucompose( _("optimal blocksize is %1 sectors (%2)"),
optimal_blocksize,
Utils::format_size( optimal_blocksize ) ) ,
STATUS_NONE ) ) ;
return succes ;
}
@ -1722,6 +1713,9 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
OperationDetail & operationdetail,
CopyType copytype )
{
if ( blocksize > sectors )
blocksize = sectors ;
operationdetail .add_child( OperationDetail(
String::ucompose( _("copy %1 sectors using a blocksize of %2 sectors"), sectors, blocksize ) ) ) ;
@ -1741,12 +1735,12 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
//add an empty sub which we will constantly update in the loop
operationdetail .get_last_child() .add_child( OperationDetail( "", STATUS_NONE ) ) ;
std::time_t time_start, time_last_progress_update ;
time_start = time_last_progress_update = std::time(NULL) ;
Sector rest_sectors = sectors % blocksize ;
Glib::Timer timer_progress_timeout, timer_total ;
Sector t ;
if ( copytype == START_TO_END )
{
Sector rest_sectors = sectors % blocksize ;
for ( t = 0 ; t < sectors - rest_sectors ; t+=blocksize )
{
if ( ! copy_block( lp_device_src,
@ -1757,14 +1751,14 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
error_message ) )
break ;
if ( (std::time(NULL) - time_last_progress_update) >= 1 )
if ( timer_progress_timeout .elapsed() >= 0.5 )
{
set_progress_info( sectors,
t + blocksize,
time_start,
timer_total,
operationdetail .get_last_child() .get_last_child() ) ;
time_last_progress_update = std::time(NULL) ;
timer_progress_timeout .reset() ;
}
}
@ -1780,7 +1774,6 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
}
else if ( copytype == END_TO_START )
{
Sector rest_sectors = sectors % blocksize ;
for ( t = 0 ; t < sectors - rest_sectors ; t+=blocksize )
{
if ( ! copy_block( lp_device_src,
@ -1791,14 +1784,14 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
error_message ) )
break ;
if ( (std::time(NULL) - time_last_progress_update) >= 1 )
if ( timer_progress_timeout .elapsed() >= 0.5 )
{
set_progress_info( sectors,
t + blocksize,
time_start,
timer_total,
operationdetail .get_last_child() .get_last_child() ) ;
time_last_progress_update = std::time(NULL) ;
timer_progress_timeout .reset() ;
}
}
@ -1813,14 +1806,13 @@ bool GParted_Core::copy_blocks( const Glib::ustring & src_device,
t += rest_sectors ;
}
//reset fraction to -1 to make room for a new one (or a pulsebar)
operationdetail .get_last_child() .get_last_child() .fraction = -1 ;
//final description
operationdetail .get_last_child() .get_last_child() .set_description(
String::ucompose( _("%1 of %2 copied"), t, sectors ), FONT_ITALIC ) ;
//reset fraction to -1 to make room for a new one (or a pulsebar)
operationdetail .get_last_child() .get_last_child() .fraction = -1 ;
if ( t == sectors )
succes = true ;
@ -1851,8 +1843,7 @@ bool GParted_Core::copy_block( PedDevice * lp_device_src,
Sector blocksize,
Glib::ustring & error_message )
{
char buf[blocksize * 512] ;
char * buf = static_cast<char *>( malloc( blocksize * 512 ) ) ;
if ( ! ped_device_read( lp_device_src, buf, offset_src, blocksize ) )
{
error_message = String::ucompose( _("Error while reading block at sector %1"), offset_src ) ;
@ -1866,6 +1857,7 @@ bool GParted_Core::copy_block( PedDevice * lp_device_src,
return false ;
}
free( buf ) ;
return true ;
}