/* Function : killStuckUploadingTransferers
* Description: kills uploading transferer processes, the working time of which
* exceeds MAX_TRANSFER_LIFETIME seconds, and clears all the data,
* regarding them, i.e. pids and last times of creation
*/
void
ReplicatorStateMachine::killStuckUploadingTransferers( time_t currentTime )
{
m_uploadTransfererMetadataList.Rewind( );
ProcessMetadata* uploadTransfererMetadata = NULL;
// killing stuck uploading 'condor_transferers'
while( m_uploadTransfererMetadataList.Next( uploadTransfererMetadata ) ) {
if( uploadTransfererMetadata->isValid( ) &&
currentTime - uploadTransfererMetadata->m_lastTimeCreated >
m_maxTransfererLifeTime ) {
dprintf( D_FULLDEBUG,
"ReplicatorStateMachine::killStuckUploadingTransferers "
"killing uploading condor_transferer pid = %d\n",
uploadTransfererMetadata->m_pid );
// sending SIGKILL signal, wrapped in daemon core function for
// portability
if( !daemonCore->Send_Signal(
uploadTransfererMetadata->m_pid, SIGKILL ) ) {
dprintf( D_ALWAYS,
"ReplicatorStateMachine::killStuckUploadingTransferers"
" kill signal failed, reason = %s\n", strerror(errno));
}
// when the process is killed, it could have not yet erased its
// temporary files, this is why we ensure it by erasing it in killer
// function
MyString extension( uploadTransfererMetadata->m_pid );
// the .up ending is needed in order not to confuse between
// upload and download processes temporary files
extension += ".";
extension += UPLOADING_TEMPORARY_FILES_EXTENSION;
FilesOperations::safeUnlinkFile( m_versionFilePath.Value( ),
extension.Value( ) );
FilesOperations::safeUnlinkFile( m_stateFilePath.Value( ),
extension.Value( ) );
delete uploadTransfererMetadata;
m_uploadTransfererMetadataList.DeleteCurrent( );
}
}
m_uploadTransfererMetadataList.Rewind( );
}
// cancels all the data, considering transferers, both uploading and downloading
// such as pids and last times of creation, and sends SIGKILL signals to the
// stuck processes
void
AbstractReplicatorStateMachine::killTransferers()
{
if( m_downloadTransfererMetadata.isValid() ) {
/* Beware of sending SIGKILL with download transferer's pid = -1, because
* according to POSIX it will be sent to every process that the
* current process is able to sent signals to
*/
dprintf( D_FULLDEBUG,
"AbstractReplicatorStateMachine::killTransferers "
"killing downloading condor_transferer pid = %d\n",
m_downloadTransfererMetadata.m_pid );
//kill( m_downloadTransfererMetadata.m_pid, SIGKILL );
daemonCore->Send_Signal( m_downloadTransfererMetadata.m_pid, SIGKILL );
// when the process is killed, it could have not yet erased its
// temporary files, this is why we ensure it by erasing it in killer
// function
MyString extension( m_downloadTransfererMetadata.m_pid );
// the .down ending is needed in order not to confuse between upload and
// download processes temporary files
extension += ".";
extension += DOWNLOADING_TEMPORARY_FILES_EXTENSION;
FilesOperations::safeUnlinkFile( m_versionFilePath.Value( ),
extension.Value( ) );
FilesOperations::safeUnlinkFile( m_stateFilePath.Value( ),
extension.Value( ) );
m_downloadTransfererMetadata.set();
}
m_uploadTransfererMetadataList.Rewind( );
ProcessMetadata* uploadTransfererMetadata = NULL;
while( m_uploadTransfererMetadataList.Next( uploadTransfererMetadata ) ) {
if( uploadTransfererMetadata->isValid( ) ) {
dprintf( D_FULLDEBUG,
"AbstractReplicatorStateMachine::killTransferers "
"killing uploading condor_transferer pid = %d\n",
uploadTransfererMetadata->m_pid );
//kill( uploadTransfererMetadata->m_pid, SIGKILL );
daemonCore->Send_Signal( uploadTransfererMetadata->m_pid, SIGKILL );
// when the process is killed, it could have not yet
// erased its
// temporary files, this is why we ensure it by erasing it in killer
// function
MyString extension( uploadTransfererMetadata->m_pid );
// the .up ending is needed in order not to confuse between
// upload and download processes temporary files
extension += ".";
extension += UPLOADING_TEMPORARY_FILES_EXTENSION;
FilesOperations::safeUnlinkFile( m_versionFilePath.Value( ),
extension.Value( ) );
FilesOperations::safeUnlinkFile( m_stateFilePath.Value( ),
extension.Value( ) );
delete uploadTransfererMetadata;
// after deletion the iterator is moved to the previous member
// so advancing the iterator twice and missing one entry does not
// happen
m_uploadTransfererMetadataList.DeleteCurrent( );
}
}
m_uploadTransfererMetadataList.Rewind( );
}
