* exwm-manage.el (exwm-manage--frame-outer-id-list): New variable for
storing frame window-outer-id's.
(exwm-manage--add-frame, exwm-manage--remove-frame): New functions for
adding/removing ids to/from the variable.
(exwm-manage--init): Add the functions to the corresponding hooks.
(exwm-manage--on-ConfigureRequest): Check for frames and avoid handling
them.
* exwm-manage.el (exwm-manage--kill-buffer-query-function): Check
buffer-local variables for destroyed X windows; Avoid force killing
clients that support WM_DELETE_WINDOW but not _NET_WM_PING; Use
`y-or-n-p' instead for querying.
; This commit replaces the internal borders of Emacs frames with X
; window borders. This should make the flickering issue of floating X
; windows less serious.
* exwm-floating.el (exwm-floating--border-pixel)
(exwm-floating--border-colormap): New variables for storing border pixel
and its colormap.
(exwm-floating--set-floating): Do not set the internal border (and
background color) of floating frames; do not take
`exwm-floating-border-width' into account when calculating geometries;
set the border of floating X window containers.
(exwm-floating--unset-floating): No need to restore the position of X
windows any more; hide the border of floating X window containers.
(exwm-floating--init): Initialize the border pixel.
* exwm-layout.el (exwm-layout-set-fullscreen)
(exwm-layout-unset-fullscreen): Show/Hide container border respectively.
* exwm-manage.el (exwm-manage--manage-window): Set the border pixel and
colormap of X window containers.
* exwm-workspace.el (exwm-workspace-move-window): Do not set the
internal border and background color of floating frames.
* exwm.el (exwm--on-ClientMessage): Simplify the code for calculating
_NET_REQUEST_FRAME_EXTENTS.
* exwm-systemtray.el (exwm-systemtray--embed): Select KeyPress events on
system tray icons.
(exwm-systemtray--on-KeyPress): New function for redirecting KeyPress
events.
(exwm-systemtray--init): Attach the event listener.
* exwm-systemtray.el (exwm-systemtray--init): Fix a typo.
* exwm-input.el (exwm-input--on-buffer-list-update): Filter out
switch-frame events.
(exwm-input--update-focus): Switch workspace to set input focus on an X
window from another workspace.
* exwm-core.el (exwm--kmacro-map): New keymap used when executing
keyboard macros.
(exwm-mode): Use `exwm--kmacro-map' to override the default keymap.
* exwm-input.el (exwm-input--on-KeyPress-line-mode): Send extra key
events when defining keyboard macros.
We can now write
throw Error("file '%s' not found", path);
instead of
throw Error(format("file '%s' not found") % path);
and similarly
printError("file '%s' not found", path);
instead of
printMsg(lvlError, format("file '%s' not found") % path);
We were passing "p=$PATH" rather than "p=$PATH;", resulting in some
invalid shell code.
Also, construct a separate environment for the child rather than
overwriting the parent's.
The fact that queryPathInfo() is synchronous meant that we needed a
thread for every concurrent binary cache lookup, even though they end
up being handled by the same download thread. Requiring hundreds of
threads is not a good idea. So now there is an asynchronous version of
queryPathInfo() that takes a callback function to process the
result. Similarly, enqueueDownload() now takes a callback rather than
returning a future.
Thus, a command like
nix path-info --store https://cache.nixos.org/ -r /nix/store/slljrzwmpygy1daay14kjszsr9xix063-nixos-16.09beta231.dccf8c5
that returns 4941 paths now takes 1.87s using only 2 threads (the main
thread and the downloader thread). (This is with a prewarmed
CloudFront.)
It's a slight misnomer now because it actually limits *all* downloads,
not just binary cache lookups.
Also add a "enable-http2" option to allow disabling use of HTTP/2
(enabled by default).
The binary cache store can now use HTTP/2 to do lookups. This is much
more efficient than HTTP/1.1 due to multiplexing: we can issue many
requests in parallel over a single TCP connection. Thus it's no longer
necessary to use a bunch of concurrent TCP connections (25 by
default).
For example, downloading 802 .narinfo files from
https://cache.nixos.org/, using a single TCP connection, takes 11.8s
with HTTP/1.1, but only 0.61s with HTTP/2.
This did require a fairly substantial rewrite of the Downloader class
to use the curl multi interface, because otherwise curl wouldn't be
able to do multiplexing for us. As a bonus, we get connection reuse
even with HTTP/1.1. All downloads are now handled by a single worker
thread. Clients call Downloader::enqueueDownload() to tell the worker
thread to start the download, getting a std::future to the result.
This largely reverts c68e5913c7. Running
builds as root breaks "cp -p", since when running as root, "cp -p"
assumes that it can succesfully chown() files. But that's not actually
the case since the user namespace doesn't provide a complete uid
mapping. So it barfs with a fatal error message ("cp: failed to
preserve ownership for 'foo': Invalid argument").
