Implement flock on Windows with LockFileEx + 'dune clean' fix on Windows #6523
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Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Isn't that expected? If the lock file is open, then there's a running dune instance. |
rgrinberg
reviewed
Nov 19, 2022
src/dune_util/dune_flock.c
Outdated
| #define FD_val(value) Handle_val(value) | ||
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| CAMLprim value dune_flock_lock(value v_fd, value v_block, value v_exclusive) { | ||
| CAMLparam2(v_fd, v_block); |
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Why did you skip v_exclusive?
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Good question: actually I copy-pasted from the Unix implementation below. I will add it (in both places). Or we could remove v_block from both places (both v_block and v_exclusive are booleans).
I'm not sure how this would work. Note that we explicitly allow |
Yes, but on Unix you can unlink an open file so |
That's a bug on Unix then :) We shouldn't allow |
Right, I hadn't understood your comment: the issue is that the Dune instance that is running is the one doing |
Maybe the bug is that we should not be taking the lock when doing Line 21 in d81b168 |
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Hmm, but that's going to prevent the exactly desirable behavior of forbidding dune clean stepping over running instances. How about making clean working like this:
There's still a race condition possible in 3-4 but i don't know how to do better than that on windows. |
I'll give it a try. |
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Actually, there's a clean way around this: just pass |
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
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(This is ready for review.) |
nojb
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rgrinberg
approved these changes
Nov 19, 2022
emillon
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Feb 6, 2023
…, dune-rpc, dune-rpc-lwt, dune-private-libs, dune-glob, dune-configurator, dune-build-info, dune-action-plugin and chrome-trace (3.7.0~alpha1) CHANGES: - Fix parsing of OCaml errors that contain code excerpts with `...` in them. (ocaml/dune#7008, @rgrinberg) - Pre-emptively clear screen in watch mode (ocaml/dune#6987, fixes ocaml/dune#6884, @rgrinberg) - Fix cross compilation configuration when a context with targets is itself a host of another context (ocaml/dune#6958, fixes ocaml/dune#6843, @rgrinberg) - Fix parsing of the `<=` operator in *blang* expressions of `dune` files. Previously, the operator would be interpreted as `,`. (ocaml/dune#6928, @tatchi) - Fix `--trace-file` output. Dune now emits a single *complete* event for every executed process. Unterminated *async* events are no longer written. (ocaml/dune#6892, @rgrinberg) - Fix preprocessing with `staged_pps` (ocaml/dune#6748, fixes ocaml/dune#6644, @rgrinberg) - Use colored output with MDX when Dune colors are enabled. (ocaml/dune#6462, @MisterDA) - Make `dune describe workspace` return consistent dependencies for executables and for libraries. By default, compile-time dependencies towards PPX-rewriters are from now not taken into account (but runtime dependencies always are). Compile-time dependencies towards PPX-rewriters can be taken into account by providing the `--with-pps` flag. (ocaml/dune#6727, fixes ocaml/dune#6486, @esope) - Print missing newline after `$ dune exec`. (ocaml/dune#6821, fixes ocaml/dune#6700, @rgrinberg, @Alizter) - Fix binary corruption when installing or promoting in parallel (ocaml/dune#6669, fixes ocaml/dune#6668, @edwintorok) - Use colored output with GCC and Clang when compiling C stubs. The flag `-fdiagnostics-color=always` is added to the `:standard` set of flags. (ocaml/dune#4083, @MisterDA) - Fix the parsing of decimal and hexadecimal escape literals in `dune`, `dune-package`, and other dune s-expression based files (ocaml/dune#6710, @shym) - Report an error if `dune init ...` would create a "dune" file in a location which already contains a "dune" directory (ocaml/dune#6705, @gridbugs) - Fix the parsing of alerts. They will now show up in diagnostics correctly. (ocaml/dune#6678, @rginberg) - Fix the compilation of modules generated at link time when `implicit_transitive_deps` is enabled (ocaml/dune#6642, @rgrinberg) - Allow `$ dune utop` to load libraries defined in data only directories defined using `(subdir ..)` (ocaml/dune#6631, @rgrinberg) - Format dune files when they are named `dune-file`. This occurs when we enable the alternative file names project option. (ocaml/dune#6566, @rgrinberg) - Move `$ dune ocaml-merlin -dump-config=$dir` to `$ dune ocaml merlin dump-config $dir`. (ocaml/dune#6547, @rgrinberg) - Allow compilation rules to be impacted by `(env ..)` stanzas that modify the environment or set binaries. (ocaml/dune#6527, @rgrinberg) - Coq native mode is now automatically detected by Dune starting with Coq lang 0.7. `(mode native)` has been deprecated in favour of detection from the configuration of Coq. (ocaml/dune#6409, @Alizter) - Print "Leaving Directory" whenever "Entering Directory" is printed. (ocaml/dune#6149, fixes ocaml/dune#138, @cpitclaudel, @rgrinberg) - Allow `$ dune ocaml dump-dot-merlin` to run in watch mode. Also this command shouldn't print "Entering Directory" mesages. (ocaml/dune#6497, @rgrinberg) - `dune clean` should no longer fail under Windows due to the inability to remove the `.lock` file. Also, bring the implementation of the global lock under Windows closer to that of Unix. (ocaml/dune#6523, @nojb) - Remove "Entering Directory" messages for `$ dune install`. (ocaml/dune#6513, @rgrinberg) - Stop passing `-q` flag in `dune coq top`, which allows for `.coqrc` to be loaded. (ocaml/dune#6848, fixes ocaml/dune#6847, @Alizter) - Fix missing dependencies when detecting the kind of C compiler we're using (ocaml/dune#6610, fixes ocaml/dune#6415, @emillon) - Allow `(include_subdirs qualified)` for OCaml projects. (ocaml/dune#6594, fixes ocaml/dune#1084, @rgrinberg) - Accurately determine merlin configuration for all sources selected with `copy#` and `copy_files#`. The old heuristic of looking for a module in parent directories is removed (ocaml/dune#6594, @rgrinberg) - Fix inline tests with *js_of_ocaml* and whole program compilation mode enabled (ocaml/dune#6645, @hhugo) - Fix *js_of_ocaml* separate compilation rules when `--enable=effects` ,`--enable=use-js-string` or `--toplevel` is used. (ocaml/dune#6714, ocaml/dune#6828, ocaml/dune#6920, @hhugo) - Fix *js_of_ocaml* separate compilation in presence of linkall (ocaml/dune#6832, ocaml/dune#6916, @hhugo) - Remove spurious build dir created when running `dune init proj ...` (ocaml/dune#6707, fixes ocaml/dune#5429, @gridbugs) - Allow `--sandbox` to affect `ocamldep` invocations. Previously, they were wrongly marked as incompatible (ocaml/dune#6749, @rgrinberg) - Validate the command line arguments for `$ dune ocaml top-module`. This command requires one positional argument (ocaml/dune#6796, fixes ocaml/dune#6793, @rgrinberg) - Add a `dune cache size` command for displaying the size of the cache (ocaml/dune#6638, @Alizter) - Add 4.14.0 MSVC to CI (ocaml/dune#6917, @jonahbeckford) - Fix dependency cycle when installing files to the bin section with `glob_files` (ocaml/dune#6764, fixes ocaml/dune#6708, @gridbugs) - Handle "Too many links" errors when using Dune cache on Windows (ocaml/dune#6993, @nojb)
emillon
added a commit
to emillon/opam-repository
that referenced
this pull request
Feb 17, 2023
…, dune-rpc, dune-rpc-lwt, dune-private-libs, dune-glob, dune-configurator, dune-build-info, dune-action-plugin and chrome-trace (3.7.0) CHANGES: - Allow running `$ dune exec` in watch mode (with the `-w` flag). In watch mode, `$ dune exec` the executed binary whenever it is recompiled. (ocaml/dune#6966, @gridbugs) - `coqdep` is now called once per theory, instead of one time per Coq file. This should significantly speed up some builds, as `coqdep` startup time is often heavy (ocaml/dune#7048, @Alizter, @ejgallego) - Add `map_workspace_root` dune-project stanza to allow disabling of mapping of workspace root to `/workspace_root`. (ocaml/dune#6988, fixes ocaml/dune#6929, @richardlford) - Fix handling of support files generated by odoc. (ocaml/dune#6913, @jonludlam) - Fix parsing of OCaml errors that contain code excerpts with `...` in them. (ocaml/dune#7008, @rgrinberg) - Pre-emptively clear screen in watch mode (ocaml/dune#6987, fixes ocaml/dune#6884, @rgrinberg) - Fix cross compilation configuration when a context with targets is itself a host of another context (ocaml/dune#6958, fixes ocaml/dune#6843, @rgrinberg) - Fix parsing of the `<=` operator in *blang* expressions of `dune` files. Previously, the operator would be interpreted as `<`. (ocaml/dune#6928, @tatchi) - Fix `--trace-file` output. Dune now emits a single *complete* event for every executed process. Unterminated *async* events are no longer written. (ocaml/dune#6892, @rgrinberg) - Fix preprocessing with `staged_pps` (ocaml/dune#6748, fixes ocaml/dune#6644, @rgrinberg) - Use colored output with MDX when Dune colors are enabled. (ocaml/dune#6462, @MisterDA) - Make `dune describe workspace` return consistent dependencies for executables and for libraries. By default, compile-time dependencies towards PPX-rewriters are from now not taken into account (but runtime dependencies always are). Compile-time dependencies towards PPX-rewriters can be taken into account by providing the `--with-pps` flag. (ocaml/dune#6727, fixes ocaml/dune#6486, @esope) - Print missing newline after `$ dune exec`. (ocaml/dune#6821, fixes ocaml/dune#6700, @rgrinberg, @Alizter) - Fix binary corruption when installing or promoting in parallel (ocaml/dune#6669, fixes ocaml/dune#6668, @edwintorok) - Use colored output with GCC and Clang when compiling C stubs. The flag `-fdiagnostics-color=always` is added to the `:standard` set of flags. (ocaml/dune#4083, @MisterDA) - Fix the parsing of decimal and hexadecimal escape literals in `dune`, `dune-package`, and other dune s-expression based files (ocaml/dune#6710, @shym) - Report an error if `dune init ...` would create a "dune" file in a location which already contains a "dune" directory (ocaml/dune#6705, @gridbugs) - Fix the parsing of alerts. They will now show up in diagnostics correctly. (ocaml/dune#6678, @rginberg) - Fix the compilation of modules generated at link time when `implicit_transitive_deps` is enabled (ocaml/dune#6642, @rgrinberg) - Allow `$ dune utop` to load libraries defined in data only directories defined using `(subdir ..)` (ocaml/dune#6631, @rgrinberg) - Format dune files when they are named `dune-file`. This occurs when we enable the alternative file names project option. (ocaml/dune#6566, @rgrinberg) - Move `$ dune ocaml-merlin -dump-config=$dir` to `$ dune ocaml merlin dump-config $dir`. (ocaml/dune#6547, @rgrinberg) - Allow compilation rules to be impacted by `(env ..)` stanzas that modify the environment or set binaries. (ocaml/dune#6527, @rgrinberg) - Coq native mode is now automatically detected by Dune starting with Coq lang 0.7. `(mode native)` has been deprecated in favour of detection from the configuration of Coq. (ocaml/dune#6409, @Alizter) - Print "Leaving Directory" whenever "Entering Directory" is printed. (ocaml/dune#6419, fixes ocaml/dune#138, @cpitclaudel, @rgrinberg) - Allow `$ dune ocaml dump-dot-merlin` to run in watch mode. Also this command shouldn't print "Entering Directory" mesages. (ocaml/dune#6497, @rgrinberg) - `dune clean` should no longer fail under Windows due to the inability to remove the `.lock` file. Also, bring the implementation of the global lock under Windows closer to that of Unix. (ocaml/dune#6523, @nojb) - Remove "Entering Directory" messages for `$ dune install`. (ocaml/dune#6513, @rgrinberg) - Stop passing `-q` flag in `dune coq top`, which allows for `.coqrc` to be loaded. (ocaml/dune#6848, fixes ocaml/dune#6847, @Alizter) - Fix missing dependencies when detecting the kind of C compiler we're using (ocaml/dune#6610, fixes ocaml/dune#6415, @emillon) - Allow `(include_subdirs qualified)` for OCaml projects. (ocaml/dune#6594, fixes ocaml/dune#1084, @rgrinberg) - Accurately determine merlin configuration for all sources selected with `copy#` and `copy_files#`. The old heuristic of looking for a module in parent directories is removed (ocaml/dune#6594, @rgrinberg) - Fix inline tests with *js_of_ocaml* and whole program compilation mode enabled (ocaml/dune#6645, @hhugo) - Fix *js_of_ocaml* separate compilation rules when `--enable=effects` ,`--enable=use-js-string` or `--toplevel` is used. (ocaml/dune#6714, ocaml/dune#6828, ocaml/dune#6920, @hhugo) - Fix *js_of_ocaml* separate compilation in presence of linkall (ocaml/dune#6832, ocaml/dune#6916, @hhugo) - Remove spurious build dir created when running `dune init proj ...` (ocaml/dune#6707, fixes ocaml/dune#5429, @gridbugs) - Allow `--sandbox` to affect `ocamldep` invocations. Previously, they were wrongly marked as incompatible (ocaml/dune#6749, @rgrinberg) - Validate the command line arguments for `$ dune ocaml top-module`. This command requires one positional argument (ocaml/dune#6796, fixes ocaml/dune#6793, @rgrinberg) - Add a `dune cache size` command for displaying the size of the cache (ocaml/dune#6638, @Alizter) - Fix dependency cycle when installing files to the bin section with `glob_files` (ocaml/dune#6764, fixes ocaml/dune#6708, @gridbugs) - Handle "Too many links" errors when using Dune cache on Windows (ocaml/dune#6993, @nojb) - Allow the `cinaps` stanza to set a custom alias. By default, if the alias is not set then the cinaps actions will be attached to both `@cinaps` and `@runtest` (ocaml/dune#6991, @rgrinberg) - Add `(using ctypes 0.3)`. When used, paths in `(ctypes)` are interpreted relative to where the stanza is defined. (ocaml/dune#6883, fixes ocaml/dune#5325, @emillon) - Auto-detect `dune-workspace` files as `dune` files in Emacs (ocaml/dune#7061, @ilankri) - Add native support for polling mode on Windows (ocaml/dune#7010, @yams-yams, @nojb)
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Implement file locking (for the global lock) using
LockFileExto avoid having two OCaml implementations of the global lock.Incidentally, while testing this PR I came across an issue which is also present in
main(it is independent of the present PR): currentlydune cleanfails on Windows due to the.lockfile being open inside the_builddirectory. A possible solution would be to keep this file outside the_builddirectory. Opinions? cc @dra27See #6360 (comment) for context.