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util: Add a multiprocess command-line option and implement

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`OptionalIpcSender<T>`.

`OptionalIpcSender<T>`dynamically switches between in-process and
out-of-process communication depending on whether multiprocess mode is
enabled.

The multiprocess command-line switch doesn't actually turn on
multiprocess mode yet, but it does control the behavior of
`OptionalIpcSender<T>`.
This commit is contained in:
Patrick Walton 2015-07-27 12:39:24 -07:00
parent ca9f9226b0
commit ef9fdc6e30
5 changed files with 93 additions and 0 deletions
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6
components/util/opts.rs
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@ -132,6 +132,9 @@ pub struct Opts {
/// An optional string allowing the user agent to be set for testing.
pub user_agent: Option<String>,
/// Whether to run in multiprocess mode.
pub multiprocess: bool,
/// Dumps the flow tree after a layout.
pub dump_flow_tree: bool,
@ -251,6 +254,7 @@ pub fn default_opts() -> Opts {
webdriver_port: None,
initial_window_size: Size2D::typed(800, 600),
user_agent: None,
multiprocess: false,
dump_flow_tree: false,
dump_display_list: false,
dump_display_list_json: false,
@ -291,6 +295,7 @@ pub fn from_cmdline_args(args: &[String]) {
getopts::optflagopt("", "webdriver", "Start remote WebDriver server on port", "7000"),
getopts::optopt("", "resolution", "Set window resolution.", "800x600"),
getopts::optopt("u", "user-agent", "Set custom user agent string", "NCSA Mosaic/1.0 (X11;SunOS 4.1.4 sun4m)"),
getopts::optflag("M", "multiprocess", "Run in multiprocess mode"),
getopts::optopt("Z", "debug",
"A comma-separated string of debug options. Pass help to show available options.", ""),
getopts::optflag("h", "help", "Print this message"),
@ -421,6 +426,7 @@ pub fn from_cmdline_args(args: &[String]) {
webdriver_port: webdriver_port,
initial_window_size: initial_window_size,
user_agent: opt_match.opt_str("u"),
multiprocess: opt_match.opt_present("M"),
show_debug_borders: debug_options.contains(&"show-compositor-borders"),
show_debug_fragment_borders: debug_options.contains(&"show-fragment-borders"),
show_debug_parallel_paint: debug_options.contains(&"show-parallel-paint"),