digitalmars.D.learn - Estimating free system resource at runtime
seany <seany uni-bonn.de> writes:
Hi I have a system that has to deal with 30+GB files. They can't be loaded to the amount of memory I have. So my idea was to create a way to estimate available system RAM, and read a chunk from file which is 1/10 of size of available RAM, and process it as far as i can. If the read chunk is too small to meaningfully process, then i wait until resources are free. If i read a chunk with some trailing things at the end that cant be processed, then i trim it, and reset the seek position. However, i cant find anything on google to tell me how to estimate system resource using D. for C++ and windowes, i could find some API-s Can e do this in D?
Anonymouse <asdf asdf.net> writes:
On Sunday, 20 August 2017 at 15:49:09 UTC, seany wrote:However, i cant find anything on google to tell me how to estimate system resource using D. for C++ and windowes, i could find some API-s Can e do this in D?You can just use those C APIs. I believe the GC does, unless I'm reading it wrong. https://github.com/dlang/druntime/blob/acd2c55095ec039be2a9c20a8891ee40e4a393c3/src/gc/os.d#L173-L175 https://github.com/dlang/druntime/blob/acd2c55095ec039be2a9c20a8891ee40e4a393c3/src/core/sys/windows/winbase.d#L1383-L1392