I am trying to create a new file for writing, as a log file, like this:

new File("gltest.log", FileMode.OutNew);

and find that with any of the "write" options the file appears to be opened for exclusive access on windows, so another process cannot then read from the same file. Is there a way around this? Other than continually opening and closing the log file, which also won't work because then the log file can't be written to if it's being read from.

14:25:35	gltest.exe:5852	OPEN	J:\bzr\gltest\trunk\gltest.log	SUCCESS Options: OpenIf  Access: 00120196	


I have also seen that readline like activity:

	foreach (char[] line; input) {

will make system calls for one byte at a time? Is there no buffering in the phobos lib?

14:25:35	gltest.exe:5852	OPEN	J:\bzr\gltest\trunk\gltest.cfg	SUCCESS Options: Open  Access: Read	
14:25:35	gltest.exe:5852	QUERY INFORMATION J:\bzr\gltest\trunk\gltest.cfg	SUCCESS	Length: 381	
14:25:35	gltest.exe:5852	READ 	J:\bzr\gltest\trunk\gltest.cfg	SUCCESS Offset: 0 Length: 1	
14:25:35	gltest.exe:5852	READ	J:\bzr\gltest\trunk\gltest.cfg	SUCCESS Offset: 1 Length: 1	
14:25:35	gltest.exe:5852	READ	J:\bzr\gltest\trunk\gltest.cfg	SUCCESS Offset: 2 Length: 1	
14:25:35	gltest.exe:5852	READ	J:\bzr\gltest\trunk\gltest.cfg	SUCCESS Offset: 3 Length: 1	

Spacen Jasset wrote:
> I am trying to create a new file for writing, as a log file, like this:
> 
> new File("gltest.log", FileMode.OutNew);
> 
> and find that with any of the "write" options the file appears to be opened for exclusive access on windows, so another process cannot then read from the same file. Is there a way around this? Other than continually opening and closing the log file, which also won't work because then the log file can't be written to if it's being read from.
> 
> 14:25:35    gltest.exe:5852    OPEN    J:\bzr\gltest\trunk\gltest.log    SUCCESS Options: OpenIf  Access: 00120196   
> 
> 
> I have also seen that readline like activity:
> 
>     foreach (char[] line; input) {
> 
> will make system calls for one byte at a time? Is there no buffering in the phobos lib?
> 
> 14:25:35    gltest.exe:5852    OPEN    J:\bzr\gltest\trunk\gltest.cfg    SUCCESS Options: Open  Access: Read   14:25:35    gltest.exe:5852    QUERY INFORMATION J:\bzr\gltest\trunk\gltest.cfg    SUCCESS    Length: 381   14:25:35    gltest.exe:5852    READ     J:\bzr\gltest\trunk\gltest.cfg    SUCCESS Offset: 0 Length: 1   14:25:35    gltest.exe:5852    READ    J:\bzr\gltest\trunk\gltest.cfg    SUCCESS Offset: 1 Length: 1   14:25:35    gltest.exe:5852    READ    J:\bzr\gltest\trunk\gltest.cfg    SUCCESS Offset: 2 Length: 1   14:25:35    gltest.exe:5852    READ    J:\bzr\gltest\trunk\gltest.cfg    SUCCESS Offset: 3 Length: 1   
I've raised a bug for the wrong share mode.

The workaround is to say: FileMode.OutNew |  FileMode.In even if you don't want to read from the file.