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author | Thomas Boerger <thomas@webhippie.de> | 2016-11-29 17:26:36 +0100 |
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committer | Lunny Xiao <xiaolunwen@gmail.com> | 2016-11-30 00:26:36 +0800 |
commit | b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6 (patch) | |
tree | 2717811fd5b10ebaddccf3ab18070c7bc71afaec /vendor/github.com/boltdb/bolt/bolt_unix_solaris.go | |
parent | 4680c349ddea56e2a6a603c2d0a54bf2bb5bfe86 (diff) | |
download | gitea-b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6.tar.gz gitea-b6a95a8cb3d9e611caf1bb8c0d3ff773e00923d6.zip |
Integrate public as bindata optionally (#293)
* Dropped unused codekit config
* Integrated dynamic and static bindata for public
* Ignore public bindata
* Add a general generate make task
* Integrated flexible public assets into web command
* Updated vendoring, added all missiong govendor deps
* Made the linter happy with the bindata and dynamic code
* Moved public bindata definition to modules directory
* Ignoring the new bindata path now
* Updated to the new public modules import path
* Updated public bindata command and drop the new prefix
Diffstat (limited to 'vendor/github.com/boltdb/bolt/bolt_unix_solaris.go')
-rw-r--r-- | vendor/github.com/boltdb/bolt/bolt_unix_solaris.go | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/vendor/github.com/boltdb/bolt/bolt_unix_solaris.go b/vendor/github.com/boltdb/bolt/bolt_unix_solaris.go new file mode 100644 index 0000000000..307bf2b3ee --- /dev/null +++ b/vendor/github.com/boltdb/bolt/bolt_unix_solaris.go @@ -0,0 +1,90 @@ +package bolt + +import ( + "fmt" + "os" + "syscall" + "time" + "unsafe" + + "golang.org/x/sys/unix" +) + +// flock acquires an advisory lock on a file descriptor. +func flock(db *DB, mode os.FileMode, exclusive bool, timeout time.Duration) error { + var t time.Time + for { + // If we're beyond our timeout then return an error. + // This can only occur after we've attempted a flock once. + if t.IsZero() { + t = time.Now() + } else if timeout > 0 && time.Since(t) > timeout { + return ErrTimeout + } + var lock syscall.Flock_t + lock.Start = 0 + lock.Len = 0 + lock.Pid = 0 + lock.Whence = 0 + lock.Pid = 0 + if exclusive { + lock.Type = syscall.F_WRLCK + } else { + lock.Type = syscall.F_RDLCK + } + err := syscall.FcntlFlock(db.file.Fd(), syscall.F_SETLK, &lock) + if err == nil { + return nil + } else if err != syscall.EAGAIN { + return err + } + + // Wait for a bit and try again. + time.Sleep(50 * time.Millisecond) + } +} + +// funlock releases an advisory lock on a file descriptor. +func funlock(db *DB) error { + var lock syscall.Flock_t + lock.Start = 0 + lock.Len = 0 + lock.Type = syscall.F_UNLCK + lock.Whence = 0 + return syscall.FcntlFlock(uintptr(db.file.Fd()), syscall.F_SETLK, &lock) +} + +// mmap memory maps a DB's data file. +func mmap(db *DB, sz int) error { + // Map the data file to memory. + b, err := unix.Mmap(int(db.file.Fd()), 0, sz, syscall.PROT_READ, syscall.MAP_SHARED|db.MmapFlags) + if err != nil { + return err + } + + // Advise the kernel that the mmap is accessed randomly. + if err := unix.Madvise(b, syscall.MADV_RANDOM); err != nil { + return fmt.Errorf("madvise: %s", err) + } + + // Save the original byte slice and convert to a byte array pointer. + db.dataref = b + db.data = (*[maxMapSize]byte)(unsafe.Pointer(&b[0])) + db.datasz = sz + return nil +} + +// munmap unmaps a DB's data file from memory. +func munmap(db *DB) error { + // Ignore the unmap if we have no mapped data. + if db.dataref == nil { + return nil + } + + // Unmap using the original byte slice. + err := unix.Munmap(db.dataref) + db.dataref = nil + db.data = nil + db.datasz = 0 + return err +} |