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try to improve page re-navigate (reset) memory usage

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This commit is contained in:
Karl Seguin
2025-12-23 12:32:16 +08:00
parent 79b62e0dfc
commit e387e005d8
2 changed files with 20 additions and 48 deletions
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60
src/browser/Page.zig
View File

@@ -178,7 +178,6 @@ pub fn init(arena: Allocator, call_arena: Allocator, session: *Session) !*Page {
page.call_arena = call_arena;
page._session = session;
page.scheduler = Scheduler.init(page.arena);
try page.reset(true);
return page;
}
@@ -207,32 +206,33 @@ pub fn deinit(self: *Page) void {
fn reset(self: *Page, comptime initializing: bool) !void {
if (comptime initializing == false) {
self.scheduler.reset();
self._session.executor.removeContext();
self._script_manager.shutdown = true;
self._session.browser.http_client.abort();
self._script_manager.deinit();
_ = self._session.browser.page_arena.reset(.{ .retain_with_limit = 1 * 1024 * 1024 });
}
self._factory = Factory.init(self);
self.scheduler = Scheduler.init(self.arena);
self.version = 0;
self.url = "about:blank";
self.document = (try self._factory.document(Node.Document.HTMLDocument{ ._proto = undefined })).asDocument();
if (comptime initializing == true) {
const storage_bucket = try self._factory.create(storage.Bucket{});
const screen = try Screen.init(self);
self.window = try self._factory.eventTarget(Window{
._document = self.document,
._storage_bucket = storage_bucket,
._performance = Performance.init(),
._proto = undefined,
._location = &default_location,
._screen = screen,
});
} else {
self.window._document = self.document;
self.window._location = &default_location;
// TODO reset _custom_elements?
}
const storage_bucket = try self._factory.create(storage.Bucket{});
const screen = try Screen.init(self);
self.window = try self._factory.eventTarget(Window{
._document = self.document,
._storage_bucket = storage_bucket,
._performance = Performance.init(),
._proto = undefined,
._location = &default_location,
._screen = screen,
});
self.window._document = self.document;
self.window._location = &default_location;
self._parse_state = .pre;
self._load_state = .parsing;
@@ -245,10 +245,8 @@ fn reset(self: *Page, comptime initializing: bool) !void {
self._script_manager = ScriptManager.init(self);
errdefer self._script_manager.deinit();
if (comptime initializing == true) {
self.js = try self._session.executor.createContext(self, true);
errdefer self.js.deinit();
}
self.js = try self._session.executor.createContext(self, true);
errdefer self.js.deinit();
self._element_styles = .{};
self._element_datasets = .{};
@@ -310,24 +308,6 @@ pub fn isSameOrigin(self: *const Page, url: [:0]const u8) !bool {
pub fn navigate(self: *Page, request_url: [:0]const u8, opts: NavigateOpts) !void {
const session = self._session;
const resolved_url = try URL.resolve(
self.arena,
self.url,
request_url,
.{ .always_dupe = true },
);
// setting opts.force = true will force a page load.
// otherwise, we will need to ensure this is a true (not document) navigation.
if (!opts.force and URL.eqlDocument(self.url, resolved_url)) {
// update page url
self.url = resolved_url;
self.window._location = try Location.init(self.url, self);
self.document._location = self.window._location;
try session.navigation.updateEntries(resolved_url, opts.kind, self, true);
return;
}
if (self._parse_state != .pre) {
// it's possible for navigate to be called multiple times on the
// same page (via CDP). We want to reset the page between each call.

8
src/browser/Scheduler.zig
View File

@@ -47,14 +47,6 @@ pub fn init(allocator: std.mem.Allocator) Scheduler {
};
}
pub fn reset(self: *Scheduler) void {
self.low_priority.cap = 0;
self.low_priority.items.len = 0;
self.high_priority.cap = 0;
self.high_priority.items.len = 0;
}
const AddOpts = struct {
name: []const u8 = "",
low_priority: bool = false,