Hi, I am looking to use mmap to load data blocks within a large memory mapped file, but am getting "invalid argument" anytime i unmap a file for the second time.
See attached an example file which replicates this issue. Note the firset read operation successed, and the file descriptor being used for the second batch is the same as the first. go run unmap.go Got file test.mmap 3 Read 0 10 Got file test.mmap 3 panic: invalid argument goroutine 1 [running]: main.read(0x10b31e8, 0x9, 0xa, 0xa, 0x0, 0x0, 0xa) unmap.go:69 +0x2a9 main.main() unmap.go:87 +0x8b exit status 2 This happens on mac OSX, as well as linux environment. Can someone suggest what i am doing wrong if anything? A seconddary question is can I map/unmap the same file from different go-routines, or will I need to add locking around this file? Cheers, Julian. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
unmap.go
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