servo/components/config/opts.rs
Martin Robinson 850e59f98e
servoshell: Allow overriding screen resolution with a command-line argument (#34038)
There is a command-line argument to override the default window size,
but not one for overriding the default screen resolution. This is
important for testing pages that use screen size to have different
behavior.

In addition to adding the new option this change:

 - Renames the `--resolution` command-line argument to `--window-size`
   to remove ambiguity with the `--screen-size` argument.
 - Passes the screen size as device independent (device pixels scaled by
   HiDPI factor) to Servo internals. Not only it make it simpler to pass
   the `--window-size` override, it makes more sense. Different screens
   can have different HiDPI factors and these can be different from the
   scale of the window. This makes the screen HiDPI factor totally
   independent of the one that Servo uses for the window.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2024-10-30 11:54:13 +00:00

829 lines
28 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
//! Configuration options for a single run of the servo application. Created
//! from command line arguments.
use std::default::Default;
use std::fs::{self, File};
use std::io::Read;
use std::path::{Path, PathBuf};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{LazyLock, RwLock, RwLockReadGuard};
use std::{env, process};
use euclid::Size2D;
use getopts::{Matches, Options};
use log::error;
use serde::{Deserialize, Serialize};
use servo_geometry::DeviceIndependentPixel;
use servo_url::ServoUrl;
use url::{self, Url};
use crate::{pref, set_pref};
/// Global flags for Servo, currently set on the command line.
#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct Opts {
/// Whether or not the legacy layout system is enabled.
pub legacy_layout: bool,
/// The maximum size of each tile in pixels (`-s`).
pub tile_size: usize,
/// `None` to disable the time profiler or `Some` to enable it with:
///
/// - an interval in seconds to cause it to produce output on that interval.
/// (`i.e. -p 5`).
/// - a file path to write profiling info to a TSV file upon Servo's termination.
/// (`i.e. -p out.tsv`).
pub time_profiling: Option<OutputOptions>,
/// When the profiler is enabled, this is an optional path to dump a self-contained HTML file
/// visualizing the traces as a timeline.
pub time_profiler_trace_path: Option<String>,
/// `None` to disable the memory profiler or `Some` with an interval in seconds to enable it
/// and cause it to produce output on that interval (`-m`).
pub mem_profiler_period: Option<f64>,
/// True to turn off incremental layout.
pub nonincremental_layout: bool,
/// Where to load userscripts from, if any. An empty string will load from
/// the resources/user-agent-js directory, and if the option isn't passed userscripts
/// won't be loaded
pub userscripts: Option<String>,
pub user_stylesheets: Vec<(Vec<u8>, ServoUrl)>,
pub output_file: Option<String>,
pub headless: bool,
/// True to exit on thread failure instead of displaying about:failure.
pub hard_fail: bool,
/// Debug options that are used by developers to control Servo
/// behavior for debugging purposes.
pub debug: DebugOptions,
/// Port number to start a server to listen to remote Firefox devtools connections.
/// 0 for random port.
pub devtools_port: u16,
/// Start the devtools server at startup
pub devtools_server_enabled: bool,
/// `None` to disable WebDriver or `Some` with a port number to start a server to listen to
/// remote WebDriver commands.
pub webdriver_port: Option<u16>,
/// The initial requested size of the window.
pub initial_window_size: Size2D<u32, DeviceIndependentPixel>,
/// An override for the screen resolution. This is useful for testing behavior on different screen sizes,
/// such as the screen of a mobile device.
pub screen_size_override: Option<Size2D<u32, DeviceIndependentPixel>>,
/// Whether we're running in multiprocess mode.
pub multiprocess: bool,
/// Whether we want background hang monitor enabled or not
pub background_hang_monitor: bool,
/// Whether we're running inside the sandbox.
pub sandbox: bool,
/// Probability of randomly closing a pipeline,
/// used for testing the hardening of the constellation.
pub random_pipeline_closure_probability: Option<f32>,
/// The seed for the RNG used to randomly close pipelines,
/// used for testing the hardening of the constellation.
pub random_pipeline_closure_seed: Option<usize>,
/// True to exit after the page load (`-x`).
pub exit_after_load: bool,
/// Load shaders from disk.
pub shaders_dir: Option<PathBuf>,
/// Directory for a default config directory
pub config_dir: Option<PathBuf>,
/// Print the version and exit.
pub is_printing_version: bool,
/// Path to PEM encoded SSL CA certificate store.
pub certificate_path: Option<String>,
/// Whether or not to completely ignore SSL certificate validation errors.
/// TODO: We should see if we can eliminate the need for this by fixing
/// <https://github.com/servo/servo/issues/30080>.
pub ignore_certificate_errors: bool,
/// Unminify Javascript.
pub unminify_js: bool,
/// Directory path that was created with "unminify-js"
pub local_script_source: Option<String>,
/// Unminify Css.
pub unminify_css: bool,
/// Print Progressive Web Metrics to console.
pub print_pwm: bool,
}
fn print_usage(app: &str, opts: &Options) {
let message = format!(
"Usage: {} [ options ... ] [URL]\n\twhere options include",
app
);
println!("{}", opts.usage(&message));
}
/// Debug options for Servo, currently set on the command line with -Z
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
pub struct DebugOptions {
/// List all the debug options.
pub help: bool,
/// True if we should bubble intrinsic widths sequentially. If this is true,
/// then intrinsic widths are computed as a separate pass instead of during
/// flow construction. You may wish to turn this flag on in order to
/// benchmark style recalculation against other browser engines.
pub bubble_inline_sizes_separately: bool,
/// If set with `disable-text-aa`, disable antialiasing on fonts. This is
/// primarily useful for reftests where pixel perfect results are required
/// when using fonts such as the Ahem font for layout tests.
pub disable_text_antialiasing: bool,
/// Disable subpixel antialiasing of rendered text.
pub disable_subpixel_text_antialiasing: bool,
/// Disable antialiasing of rendered text on the HTML canvas element.
/// If set with `disable-canvas-aa`, disable antialiasing on the HTML canvas
/// element. Like `disable-text-aa`, this is useful for reftests where
/// pixel perfect results are required.
pub disable_canvas_antialiasing: bool,
/// Print the DOM after each restyle.
pub dump_style_tree: bool,
/// Dumps the rule tree.
pub dump_rule_tree: bool,
/// Print the flow tree (Layout 2013) or fragment tree (Layout 2020) after each layout.
pub dump_flow_tree: bool,
/// Print the stacking context tree after each layout.
pub dump_stacking_context_tree: bool,
/// Print the display list after each layout.
pub dump_display_list: bool,
/// Print the display list in JSON form.
pub dump_display_list_json: bool,
/// Print notifications when there is a relayout.
pub relayout_event: bool,
/// Periodically print out on which events script threads spend their processing time.
pub profile_script_events: bool,
/// Paint borders along fragment boundaries.
pub show_fragment_borders: bool,
/// Mark which thread laid each flow out with colors.
pub show_parallel_layout: bool,
/// True if each step of layout is traced to an external JSON file
/// for debugging purposes. Setting this implies sequential layout
/// and paint.
pub trace_layout: bool,
/// Disable the style sharing cache.
pub disable_share_style_cache: bool,
/// Whether to show in stdout style sharing cache stats after a restyle.
pub dump_style_statistics: bool,
/// Translate mouse input into touch events.
pub convert_mouse_to_touch: bool,
/// Replace unpaires surrogates in DOM strings with U+FFFD.
/// See <https://github.com/servo/servo/issues/6564>
pub replace_surrogates: bool,
/// Log GC passes and their durations.
pub gc_profile: bool,
/// Load web fonts synchronously to avoid non-deterministic network-driven reflows.
pub load_webfonts_synchronously: bool,
/// Show webrender profiling stats on screen.
pub webrender_stats: bool,
/// True to compile all webrender shaders at init time. This is mostly
/// useful when modifying the shaders, to ensure they all compile
/// after each change is made.
pub precache_shaders: bool,
/// True to use OS native signposting facilities. This makes profiling events (script activity,
/// reflow, compositing, etc.) appear in Instruments.app on macOS.
pub signpost: bool,
}
impl DebugOptions {
pub fn extend(&mut self, debug_string: String) -> Result<(), String> {
for option in debug_string.split(',') {
match option {
"help" => self.help = true,
"bubble-inline-sizes-separately" => self.bubble_inline_sizes_separately = true,
"convert-mouse-to-touch" => self.convert_mouse_to_touch = true,
"disable-canvas-aa" => self.disable_canvas_antialiasing = true,
"disable-share-style-cache" => self.disable_share_style_cache = true,
"disable-subpixel-aa" => self.disable_subpixel_text_antialiasing = true,
"disable-text-aa" => self.disable_text_antialiasing = true,
"dump-display-list" => self.dump_display_list = true,
"dump-display-list-json" => self.dump_display_list_json = true,
"dump-stacking-context-tree" => self.dump_stacking_context_tree = true,
"dump-flow-tree" => self.dump_flow_tree = true,
"dump-rule-tree" => self.dump_rule_tree = true,
"dump-style-tree" => self.dump_style_tree = true,
"gc-profile" => self.gc_profile = true,
"load-webfonts-synchronously" => self.load_webfonts_synchronously = true,
"precache-shaders" => self.precache_shaders = true,
"profile-script-events" => self.profile_script_events = true,
"relayout-event" => self.relayout_event = true,
"replace-surrogates" => self.replace_surrogates = true,
"show-fragment-borders" => self.show_fragment_borders = true,
"show-parallel-layout" => self.show_parallel_layout = true,
"signpost" => self.signpost = true,
"dump-style-stats" => self.dump_style_statistics = true,
"trace-layout" => self.trace_layout = true,
"wr-stats" => self.webrender_stats = true,
"" => {},
_ => return Err(String::from(option)),
};
}
if self.trace_layout {
self.bubble_inline_sizes_separately = true;
}
Ok(())
}
fn print_usage(app: &str) {
fn print_option(name: &str, description: &str) {
println!("\t{:<35} {}", name, description);
}
println!(
"Usage: {} debug option,[options,...]\n\twhere options include\n\nOptions:",
app
);
print_option(
"bubble-inline-sizes-separately",
"Bubble intrinsic widths separately like other engines.",
);
print_option(
"convert-mouse-to-touch",
"Send touch events instead of mouse events",
);
print_option(
"disable-canvas-aa",
"Disable antialiasing on the HTML canvas element.",
);
print_option(
"disable-share-style-cache",
"Disable the style sharing cache.",
);
print_option(
"disable-subpixel-aa",
"Disable subpixel text antialiasing overriding preference.",
);
print_option("disable-text-aa", "Disable antialiasing of rendered text.");
print_option(
"dump-stacking-context-tree",
"Print the stacking context tree after each layout.",
);
print_option(
"dump-display-list",
"Print the display list after each layout.",
);
print_option(
"dump-display-list-json",
"Print the display list in JSON form.",
);
print_option(
"dump-flow-tree",
"Print the flow tree (Layout 2013) or fragment tree (Layout 2020) after each layout.",
);
print_option(
"dump-rule-tree",
"Print the style rule tree after each layout.",
);
print_option(
"dump-style-tree",
"Print the DOM with computed styles after each restyle.",
);
print_option("dump-style-stats", "Print style statistics each restyle.");
print_option("gc-profile", "Log GC passes and their durations.");
print_option(
"load-webfonts-synchronously",
"Load web fonts synchronously to avoid non-deterministic network-driven reflows",
);
print_option(
"parallel-display-list-building",
"Build display lists in parallel.",
);
print_option("precache-shaders", "Compile all shaders during init.");
print_option(
"profile-script-events",
"Enable profiling of script-related events.",
);
print_option(
"relayout-event",
"Print notifications when there is a relayout.",
);
print_option("replace-surrogates", "Replace unpaires surrogates in DOM strings with U+FFFD. See https://github.com/servo/servo/issues/6564");
print_option(
"show-fragment-borders",
"Paint borders along fragment boundaries.",
);
print_option(
"show-parallel-layout",
"Mark which thread laid each flow out with colors.",
);
print_option(
"signpost",
"Emit native OS signposts for profile events (currently macOS only)",
);
print_option(
"trace-layout",
"Write layout trace to an external file for debugging.",
);
print_option("wr-stats", "Show WebRender profiler on screen.");
println!();
process::exit(0)
}
}
#[derive(Clone, Debug, Deserialize, Serialize)]
pub enum OutputOptions {
/// Database connection config (hostname, name, user, pass)
FileName(String),
Stdout(f64),
}
fn args_fail(msg: &str) -> ! {
eprintln!("{}", msg);
process::exit(1)
}
static MULTIPROCESS: AtomicBool = AtomicBool::new(false);
#[inline]
pub fn multiprocess() -> bool {
MULTIPROCESS.load(Ordering::Relaxed)
}
pub fn default_opts() -> Opts {
Opts {
legacy_layout: false,
tile_size: 512,
time_profiling: None,
time_profiler_trace_path: None,
mem_profiler_period: None,
nonincremental_layout: false,
userscripts: None,
user_stylesheets: Vec::new(),
output_file: None,
headless: false,
hard_fail: true,
devtools_port: 0,
devtools_server_enabled: false,
webdriver_port: None,
initial_window_size: Size2D::new(1024, 740),
screen_size_override: None,
multiprocess: false,
background_hang_monitor: false,
random_pipeline_closure_probability: None,
random_pipeline_closure_seed: None,
sandbox: false,
debug: Default::default(),
exit_after_load: false,
config_dir: None,
is_printing_version: false,
shaders_dir: None,
certificate_path: None,
ignore_certificate_errors: false,
unminify_js: false,
local_script_source: None,
unminify_css: false,
print_pwm: false,
}
}
pub fn from_cmdline_args(mut opts: Options, args: &[String]) -> ArgumentParsingResult {
let (app_name, args) = args.split_first().unwrap();
opts.optflag("", "legacy-layout", "Use the legacy layout engine");
opts.optopt("o", "output", "Output file", "output.png");
opts.optopt("s", "size", "Size of tiles", "512");
opts.optflagopt(
"p",
"profile",
"Time profiler flag and either a TSV output filename \
OR an interval for output to Stdout (blank for Stdout with interval of 5s)",
"10 \
OR time.tsv",
);
opts.optflagopt(
"",
"profiler-trace-path",
"Path to dump a self-contained HTML timeline of profiler traces",
"",
);
opts.optflagopt(
"m",
"memory-profile",
"Memory profiler flag and output interval",
"10",
);
opts.optflag("x", "exit", "Exit after load flag");
opts.optopt(
"y",
"layout-threads",
"Number of threads to use for layout",
"1",
);
opts.optflag(
"i",
"nonincremental-layout",
"Enable to turn off incremental layout.",
);
opts.optflagopt(
"",
"userscripts",
"Uses userscripts in resources/user-agent-js, or a specified full path",
"",
);
opts.optmulti(
"",
"user-stylesheet",
"A user stylesheet to be added to every document",
"file.css",
);
opts.optopt(
"",
"shaders",
"Shaders will be loaded from the specified directory instead of using the builtin ones.",
"",
);
opts.optflag("z", "headless", "Headless mode");
opts.optflag(
"f",
"hard-fail",
"Exit on thread failure instead of displaying about:failure",
);
opts.optflag(
"F",
"soft-fail",
"Display about:failure on thread failure instead of exiting",
);
opts.optflagopt("", "devtools", "Start remote devtools server on port", "0");
opts.optflagopt(
"",
"webdriver",
"Start remote WebDriver server on port",
"7000",
);
opts.optopt(
"",
"window-size",
"Set the initial window size in logical (device independenrt) pixels",
"1024x740",
);
opts.optopt(
"",
"screen-size",
"Override the screen resolution in logical (device independent) pixels",
"1024x768",
);
opts.optflag("M", "multiprocess", "Run in multiprocess mode");
opts.optflag("B", "bhm", "Background Hang Monitor enabled");
opts.optflag("S", "sandbox", "Run in a sandbox if multiprocess");
opts.optopt(
"",
"random-pipeline-closure-probability",
"Probability of randomly closing a pipeline (for testing constellation hardening).",
"0.0",
);
opts.optopt(
"",
"random-pipeline-closure-seed",
"A fixed seed for repeatbility of random pipeline closure.",
"",
);
opts.optmulti(
"Z",
"debug",
"A comma-separated string of debug options. Pass help to show available options.",
"",
);
opts.optflag("h", "help", "Print this message");
opts.optopt(
"",
"resources-path",
"Path to find static resources",
"/home/servo/resources",
);
opts.optopt(
"",
"certificate-path",
"Path to find SSL certificates",
"/home/servo/resources/certs",
);
opts.optflag(
"",
"ignore-certificate-errors",
"Whether or not to completely ignore certificate errors",
);
opts.optopt(
"",
"content-process",
"Run as a content process and connect to the given pipe",
"servo-ipc-channel.abcdefg",
);
opts.optopt(
"",
"config-dir",
"config directory following xdg spec on linux platform",
"",
);
opts.optflag("v", "version", "Display servo version information");
opts.optflag("", "unminify-js", "Unminify Javascript");
opts.optflag("", "print-pwm", "Print Progressive Web Metrics");
opts.optopt(
"",
"local-script-source",
"Directory root with unminified scripts",
"",
);
opts.optflag("", "unminify-css", "Unminify Css");
let opt_match = match opts.parse(args) {
Ok(m) => m,
Err(f) => args_fail(&f.to_string()),
};
if opt_match.opt_present("h") || opt_match.opt_present("help") {
print_usage(app_name, &opts);
process::exit(0);
};
// If this is the content process, we'll receive the real options over IPC. So just fill in
// some dummy options for now.
if let Some(content_process) = opt_match.opt_str("content-process") {
MULTIPROCESS.store(true, Ordering::SeqCst);
return ArgumentParsingResult::ContentProcess(opt_match, content_process);
}
let mut debug_options = DebugOptions::default();
for debug_string in opt_match.opt_strs("Z") {
if let Err(e) = debug_options.extend(debug_string) {
args_fail(&format!("error: unrecognized debug option: {}", e));
}
}
if debug_options.help {
DebugOptions::print_usage(app_name)
}
let tile_size: usize = match opt_match.opt_str("s") {
Some(tile_size_str) => tile_size_str
.parse()
.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -s ({})", err))),
None => 512,
};
// If only the flag is present, default to a 5 second period for both profilers
let time_profiling = if opt_match.opt_present("p") {
match opt_match.opt_str("p") {
Some(argument) => match argument.parse::<f64>() {
Ok(interval) => Some(OutputOptions::Stdout(interval)),
Err(_) => match ServoUrl::parse(&argument) {
Ok(_) => panic!("influxDB isn't supported anymore"),
Err(_) => Some(OutputOptions::FileName(argument)),
},
},
None => Some(OutputOptions::Stdout(5.0)),
}
} else {
// if the p option doesn't exist:
None
};
if let Some(ref time_profiler_trace_path) = opt_match.opt_str("profiler-trace-path") {
let mut path = PathBuf::from(time_profiler_trace_path);
path.pop();
if let Err(why) = fs::create_dir_all(&path) {
error!(
"Couldn't create/open {:?}: {:?}",
Path::new(time_profiler_trace_path).to_string_lossy(),
why
);
}
}
let mem_profiler_period = opt_match.opt_default("m", "5").map(|period| {
period
.parse()
.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -m ({})", err)))
});
let mut layout_threads: Option<usize> = opt_match.opt_str("y").map(|layout_threads_str| {
layout_threads_str
.parse()
.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -y ({})", err)))
});
let nonincremental_layout = opt_match.opt_present("i");
let random_pipeline_closure_probability = opt_match
.opt_str("random-pipeline-closure-probability")
.map(|prob| {
prob.parse().unwrap_or_else(|err| {
args_fail(&format!(
"Error parsing option: --random-pipeline-closure-probability ({})",
err
))
})
});
let random_pipeline_closure_seed =
opt_match
.opt_str("random-pipeline-closure-seed")
.map(|seed| {
seed.parse().unwrap_or_else(|err| {
args_fail(&format!(
"Error parsing option: --random-pipeline-closure-seed ({})",
err
))
})
});
if debug_options.trace_layout {
layout_threads = Some(1);
}
let (devtools_server_enabled, devtools_port) = if opt_match.opt_present("devtools") {
let port = opt_match
.opt_str("devtools")
.map(|port| {
port.parse().unwrap_or_else(|err| {
args_fail(&format!("Error parsing option: --devtools ({})", err))
})
})
.unwrap_or(pref!(devtools.server.port));
(true, port as u16)
} else {
(
pref!(devtools.server.enabled),
pref!(devtools.server.port) as u16,
)
};
let webdriver_port = opt_match.opt_default("webdriver", "7000").map(|port| {
port.parse().unwrap_or_else(|err| {
args_fail(&format!("Error parsing option: --webdriver ({})", err))
})
});
let parse_resolution_string = |string: String| {
let components: Vec<u32> = string
.split('x')
.map(|component| {
component.parse().unwrap_or_else(|error| {
args_fail(&format!("Error parsing resolution '{string}': {error}"));
})
})
.collect();
Size2D::new(components[0], components[1])
};
let screen_size_override = opt_match
.opt_str("screen-size")
.map(parse_resolution_string);
// Make sure the default window size is not larger than any provided screen size.
let default_window_size = Size2D::new(1024, 740);
let default_window_size = screen_size_override
.map_or(default_window_size, |screen_size_override| {
default_window_size.min(screen_size_override)
});
let initial_window_size = opt_match
.opt_str("window-size")
.map_or(default_window_size, parse_resolution_string);
if opt_match.opt_present("M") {
MULTIPROCESS.store(true, Ordering::SeqCst)
}
let user_stylesheets = opt_match
.opt_strs("user-stylesheet")
.iter()
.map(|filename| {
let cwd = env::current_dir().unwrap();
let path = cwd.join(filename);
let url = ServoUrl::from_url(Url::from_file_path(&path).unwrap());
let mut contents = Vec::new();
File::open(path)
.unwrap_or_else(|err| args_fail(&format!("Couldn't open {}: {}", filename, err)))
.read_to_end(&mut contents)
.unwrap_or_else(|err| args_fail(&format!("Couldn't read {}: {}", filename, err)));
(contents, url)
})
.collect();
let is_printing_version = opt_match.opt_present("v") || opt_match.opt_present("version");
let legacy_layout = opt_match.opt_present("legacy-layout");
if legacy_layout {
set_pref!(layout.legacy_layout, true);
}
let opts = Opts {
debug: debug_options.clone(),
legacy_layout,
tile_size,
time_profiling,
time_profiler_trace_path: opt_match.opt_str("profiler-trace-path"),
mem_profiler_period,
nonincremental_layout,
userscripts: opt_match.opt_default("userscripts", ""),
user_stylesheets,
output_file: opt_match.opt_str("o"),
headless: opt_match.opt_present("z"),
hard_fail: opt_match.opt_present("f") && !opt_match.opt_present("F"),
devtools_port,
devtools_server_enabled,
webdriver_port,
initial_window_size,
screen_size_override,
multiprocess: opt_match.opt_present("M"),
background_hang_monitor: opt_match.opt_present("B"),
sandbox: opt_match.opt_present("S"),
random_pipeline_closure_probability,
random_pipeline_closure_seed,
exit_after_load: opt_match.opt_present("x"),
config_dir: opt_match.opt_str("config-dir").map(Into::into),
is_printing_version,
shaders_dir: opt_match.opt_str("shaders").map(Into::into),
certificate_path: opt_match.opt_str("certificate-path"),
ignore_certificate_errors: opt_match.opt_present("ignore-certificate-errors"),
unminify_js: opt_match.opt_present("unminify-js"),
local_script_source: opt_match.opt_str("local-script-source"),
unminify_css: opt_match.opt_present("unminify-css"),
print_pwm: opt_match.opt_present("print-pwm"),
};
set_options(opts);
if let Some(layout_threads) = layout_threads {
set_pref!(layout.threads, layout_threads as i64);
}
ArgumentParsingResult::ChromeProcess(opt_match)
}
pub enum ArgumentParsingResult {
ChromeProcess(Matches),
ContentProcess(Matches, String),
}
// Make Opts available globally. This saves having to clone and pass
// opts everywhere it is used, which gets particularly cumbersome
// when passing through the DOM structures.
static OPTIONS: LazyLock<RwLock<Opts>> = LazyLock::new(|| RwLock::new(default_opts()));
pub fn set_options(opts: Opts) {
MULTIPROCESS.store(opts.multiprocess, Ordering::SeqCst);
*OPTIONS.write().unwrap() = opts;
}
#[inline]
pub fn get() -> RwLockReadGuard<'static, Opts> {
OPTIONS.read().unwrap()
}