/// <summary>
/// Constructs the journal file.
/// </summary>
/// <param name="js"></param>
/// <param name="file"></param>
/// <param name="read_only"></param>
public JournalFile(JournalledSystem js, string file, bool read_only)
{
this.js = js;
this.file = file;
this.read_only = read_only;
this.is_open = false;
buffer = new byte[36];
resource_id_map = new Hashtable();
cur_seq_id = 0;
reference_count = 1;
}
/// <summary>
/// Constructs the resource.
/// </summary>
/// <param name="js"></param>
/// <param name="name"></param>
/// <param name="id"></param>
/// <param name="data"></param>
protected AbstractResource(JournalledSystem js, String name, long id, IStoreDataAccessor data, int page_size)
{
this.js = js;
this.name = name;
this.id = id;
this.data = data;
this.page_size = page_size;
}
/// <summary>
/// Constructs the resource.
/// </summary>
/// <param name="js"></param>
/// <param name="name"></param>
/// <param name="id"></param>
/// <param name="data"></param>
internal Resource(JournalledSystem js, String name, long id, IStoreDataAccessor data, int pageSize)
: base(js, name, id, data, pageSize)
{
journal_map = new JournalEntry[257];
data_open = false;
data_exists = data.Exists;
data_deleted = false;
if (data_exists) {
try {
size = data.Size;
// Console.Out.WriteLine("Setting size of " + name + " to " + size);
} catch (IOException e) {
throw new ApplicationException("Error getting size of resource: " + e.Message);
}
}
really_open = false;
page_buffer = new byte[js.page_size];
}
/// <summary>
/// Constructs the resource.
/// </summary>
/// <param name="js"></param>
/// <param name="name"></param>
/// <param name="id"></param>
/// <param name="data"></param>
internal NonLoggingResource(JournalledSystem js, String name, long id, IStoreDataAccessor data, int pageSize)
: base(js, name, id, data, pageSize)
{
}
internal JournalingThread(JournalledSystem js)
{
this.js = js;
thread = new Thread(new ThreadStart(run));
thread.Name = "Background Journaling";
// This is a daemon thread. it should be safe if this thread
// dies at any time.
thread.IsBackground = true;
}
/// <summary>
/// Constructs the manager.
/// </summary>
/// <param name="journal_path"></param>
/// <param name="read_only"></param>
/// <param name="max_pages"></param>
/// <param name="page_size"></param>
/// <param name="sda_factory"></param>
/// <param name="enable_logging"></param>
internal LoggingBufferManager(string journal_path, bool read_only,
int max_pages, int page_size,
IStoreDataAccessorFactory sda_factory, Logger logger, bool enable_logging)
{
PageCacheComparer = new PageCacheComparerImpl(this);
this.max_pages = max_pages;
this.page_size = page_size;
check_point_in_progress = false;
write_lock_count = 0;
current_T = 0;
page_list = new ArrayList();
page_map = new BMPage[7829];
journalled_system = new JournalledSystem(journal_path, read_only,
page_size, sda_factory, logger, enable_logging);
}
