delphi 写二进制数据的多线程实例
时间: 2024-02-25 21:53:20 浏览: 28
下面是一个使用 Delphi 实现二进制数据多线程写入的示例代码:
```delphi
type
TMyThread = class(TThread)
private
FStream: TFileStream;
FData: TBytes;
FStartIndex: Integer;
FEndIndex: Integer;
public
constructor Create(const AFileName: string; const AData: TBytes;
const AStartIndex, AEndIndex: Integer);
procedure Execute; override;
end;
constructor TMyThread.Create(const AFileName: string; const AData: TBytes;
const AStartIndex, AEndIndex: Integer);
begin
inherited Create(False);
FStream := TFileStream.Create(AFileName, fmOpenWrite or fmShareDenyNone);
FData := AData;
FStartIndex := AStartIndex;
FEndIndex := AEndIndex;
end;
procedure TMyThread.Execute;
begin
FStream.Seek(FStartIndex, soBeginning);
FStream.Write(FData[FStartIndex], FEndIndex - FStartIndex + 1);
FStream.Free;
end;
procedure WriteBinaryData(const AFileName: string; const AData: TBytes;
const AThreadCount: Integer);
var
I: Integer;
ThreadList: TList<TMyThread>;
ChunkSize: Integer;
StartIndex: Integer;
EndIndex: Integer;
begin
ThreadList := TList<TMyThread>.Create;
try
ChunkSize := Length(AData) div AThreadCount;
StartIndex := 0;
EndIndex := ChunkSize - 1;
for I := 1 to AThreadCount do
begin
if I = AThreadCount then
EndIndex := Length(AData) - 1;
ThreadList.Add(TMyThread.Create(AFileName, AData, StartIndex, EndIndex));
Inc(StartIndex, ChunkSize);
Inc(EndIndex, ChunkSize);
end;
for I := 0 to ThreadList.Count - 1 do
ThreadList[I].WaitFor;
finally
ThreadList.Free;
end;
end;
```
该代码将输入的二进制数据拆分成多个块,在每个线程中写入数据块。可以通过调整 `AThreadCount` 参数来控制使用的线程数。
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