59 lines
2 KiB
Text
59 lines
2 KiB
Text
/-
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Copyright (c) 2017 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Gabriel Ebner, Sebastian Ullrich, Mac Malone
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-/
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import Lake.Proc
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import Lake.Package
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open System
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namespace Lake
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def lockfile : FilePath := buildPath / ".lake-lock"
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partial def withLockFile (x : IO α) : IO α := do
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acquire
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try
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x
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finally
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IO.FS.removeFile lockfile
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where
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acquire (firstTime := true) := do
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IO.FS.createDirAll lockfile.parent.get!
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try
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-- TODO: lock file should ideally contain PID
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if !Platform.isWindows then
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discard <| IO.FS.Handle.mkPrim lockfile "wx"
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else
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-- `x` mode doesn't seem to work on Windows even though it's listed at
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-- https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/fopen-wfopen?view=msvc-160
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-- ...? Let's use the slightly racy approach then.
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if ← lockfile.pathExists then
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throw <| IO.Error.alreadyExists 0 ""
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discard <| IO.FS.Handle.mk lockfile IO.FS.Mode.write
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catch
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| IO.Error.alreadyExists _ _ => do
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if firstTime then
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IO.eprintln s!"Waiting for prior lake invocation to finish... (remove '{lockfile}' if stuck)"
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IO.sleep (ms := 300)
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acquire (firstTime := false)
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| e => throw e
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def execMake
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(pkg : Package) (deps : List Package) (makeArgs leanArgs : List String := [])
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: IO Unit := withLockFile do
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let timeoutArgs :=
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match pkg.timeout with
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| some t => ["-T", toString t]
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| none => []
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let leanOptsStr := " ".intercalate <| timeoutArgs ++ leanArgs
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let leanPathStr := SearchPath.toString <| pkg.oleanDir :: deps.map (·.oleanDir)
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let makeArgsStr := " ".intercalate makeArgs
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let moreDepsStr := " ".intercalate <| deps.map (·.oleanRoot.toString)
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let mut spawnArgs := {
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cmd := "sh"
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cwd := pkg.dir
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args := #["-c", s!"leanmake PKG={pkg.module} LEAN_OPTS=\"{leanOptsStr}\" LEAN_PATH=\"{leanPathStr}\" {makeArgsStr} MORE_DEPS+=\"{moreDepsStr}\" >&2"]
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}
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execCmd spawnArgs
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