/// <summary>
/// Increase or decreade the size of a memory-mapped file.
/// </summary>
/// <param name="memoryMappedFilePath"></param>
/// <param name="newLeadingAxesLength"></param>
/// <returns></returns>
public AType ExpandOrDecrease(string memoryMappedFilePath, int newLeadingAxesLength)
{
string memoryMappedFileName = EncodeName(memoryMappedFilePath);
var memoryMappedFile = MemoryMappedFile.CreateFromFile(memoryMappedFilePath, FileMode.Open, memoryMappedFileName);
MappedFile mappedFile = new MappedFile(memoryMappedFile);
int newSize = mappedFile.ComputeNewSize(newLeadingAxesLength);
int oldLeadingAxesLength = mappedFile.LeadingAxes;
if (mappedFile.LeadingAxes < newLeadingAxesLength)
{
mappedFile.LeadingAxes = newLeadingAxesLength;
mappedFile.Dispose();
memoryMappedFile = MemoryMappedFile.CreateFromFile(memoryMappedFilePath, FileMode.Open, memoryMappedFileName, newSize);
memoryMappedFile.Dispose();
}
else if (newLeadingAxesLength < mappedFile.LeadingAxes)
{
mappedFile.LeadingAxes = mappedFile.Length = newLeadingAxesLength;
mappedFile.Dispose();
FileStream fileStream = new FileStream(memoryMappedFilePath, FileMode.Open);
fileStream.SetLength(newSize);
fileStream.Close();
}
return(AInteger.Create(oldLeadingAxesLength));
}
/// <summary>
/// Create a memory-mapped file with the given path and argument.
/// </summary>
/// <param name="path"></param>
/// <param name="argument"></param>
public void CreateMemmoryMappedFile(string path, AType argument)
{
GC.Collect();
GC.WaitForPendingFinalizers();
string memoryMappedFileName = EncodeName(path);
MemoryMappedFile memoryMappedFile;
try
{
memoryMappedFile = MemoryMappedFile.CreateFromFile(
new FileStream(path, FileMode.Create),
memoryMappedFileName,
MappedFile.ComputeSize(argument),
MemoryMappedFileAccess.ReadWrite,
new MemoryMappedFileSecurity(),
HandleInheritability.Inheritable,
false
);
}
catch (Exception)
{
throw new Error.Invalid("MemoryMappedFile");
}
MappedFile mappedFile = new MappedFile(memoryMappedFile);
mappedFile.Create(argument);
mappedFile.Dispose();
}
/// <summary>
/// Create a memory-mapped file with the given path and argument.
/// </summary>
/// <param name="path"></param>
/// <param name="argument"></param>
public void CreateMemmoryMappedFile(string path, AType argument)
{
GC.Collect();
GC.WaitForPendingFinalizers();
string memoryMappedFileName = EncodeName(path);
MemoryMappedFile memoryMappedFile;
try
{
memoryMappedFile = MemoryMappedFile.CreateFromFile(
new FileStream(path, FileMode.Create),
memoryMappedFileName,
MappedFile.ComputeSize(argument),
MemoryMappedFileAccess.ReadWrite,
new MemoryMappedFileSecurity(),
HandleInheritability.Inheritable,
false
);
}
catch (Exception)
{
throw new Error.Invalid("MemoryMappedFile");
}
MappedFile mappedFile = new MappedFile(memoryMappedFile);
mappedFile.Create(argument);
mappedFile.Dispose();
}
/// <summary>
/// It gives back the leading axes (_Items function modify this value) of a memory-mapped file.
/// </summary>
/// <param name="memoryMappedFilePath"></param>
/// <returns></returns>
public AType GetLeadingAxesLength(string memoryMappedFilePath)
{
MemoryMappedFile memoryMappedFile;
GetMemoryMappedFile(memoryMappedFilePath, out memoryMappedFile);
MappedFile mappedFile = new MappedFile(memoryMappedFile);
AType result = AInteger.Create(mappedFile.LeadingAxes);
mappedFile.Dispose();
return(result);
}
/// <summary>
/// Increase or decreade the size of a memory-mapped file.
/// </summary>
/// <param name="memoryMappedFilePath"></param>
/// <param name="newLeadingAxesLength"></param>
/// <returns></returns>
public AType ExpandOrDecrease(string memoryMappedFilePath, int newLeadingAxesLength)
{
string memoryMappedFileName = EncodeName(memoryMappedFilePath);
var memoryMappedFile = MemoryMappedFile.CreateFromFile(memoryMappedFilePath, FileMode.Open, memoryMappedFileName);
MappedFile mappedFile = new MappedFile(memoryMappedFile);
int newSize = mappedFile.ComputeNewSize(newLeadingAxesLength);
int oldLeadingAxesLength = mappedFile.LeadingAxes;
if (mappedFile.LeadingAxes < newLeadingAxesLength)
{
mappedFile.LeadingAxes = newLeadingAxesLength;
mappedFile.Dispose();
memoryMappedFile = MemoryMappedFile.CreateFromFile(memoryMappedFilePath, FileMode.Open, memoryMappedFileName, newSize);
memoryMappedFile.Dispose();
}
else if (newLeadingAxesLength < mappedFile.LeadingAxes)
{
mappedFile.LeadingAxes = mappedFile.Length = newLeadingAxesLength;
mappedFile.Dispose();
FileStream fileStream = new FileStream(memoryMappedFilePath, FileMode.Open);
fileStream.SetLength(newSize);
fileStream.Close();
}
return AInteger.Create(oldLeadingAxesLength);
}
/// <summary>
/// It gives back the leading axes (_Items function modify this value) of a memory-mapped file.
/// </summary>
/// <param name="memoryMappedFilePath"></param>
/// <returns></returns>
public AType GetLeadingAxesLength(string memoryMappedFilePath)
{
MemoryMappedFile memoryMappedFile;
GetMemoryMappedFile(memoryMappedFilePath, out memoryMappedFile);
MappedFile mappedFile = new MappedFile(memoryMappedFile);
AType result = AInteger.Create(mappedFile.LeadingAxes);
mappedFile.Dispose();
return result;
}