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Ability to capture a V8 heap profile and a heap snapshot

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This commit is contained in:
Karl Seguin
2026-01-22 10:26:54 +08:00
parent 24b7035b1b
commit b4759ae261
5 changed files with 81 additions and 7 deletions
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23
src/lightpanda.zig
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@@ -51,7 +51,7 @@ pub fn fetch(app: *App, url: [:0]const u8, opts: FetchOpts) !void {
// defer {
// if (page.js.stopCpuProfiler()) |profile| {
// std.fs.cwd().writeFile(.{
// .sub_path = "v8/profile.json",
// .sub_path = ".lp-cache/cpu_profile.json",
// .data = profile,
// }) catch |err| {
// log.err(.app, "profile write error", .{ .err = err });
@@ -61,6 +61,27 @@ pub fn fetch(app: *App, url: [:0]const u8, opts: FetchOpts) !void {
// }
// }
// // Comment this out to get a heap V8 heap profil
// page.js.startHeapProfiler();
// defer {
// if (page.js.stopHeapProfiler()) |profile| {
// std.fs.cwd().writeFile(.{
// .sub_path = ".lp-cache/allocating.heapprofile",
// .data = profile.@"0",
// }) catch |err| {
// log.err(.app, "allocating write error", .{ .err = err });
// };
// std.fs.cwd().writeFile(.{
// .sub_path = ".lp-cache/snapshot.heapsnapshot",
// .data = profile.@"1",
// }) catch |err| {
// log.err(.app, "heapsnapshot write error", .{ .err = err });
// };
// } else |err| {
// log.err(.app, "profile error", .{ .err = err });
// }
// }
_ = try page.navigate(url, .{
.reason = .address_bar,
.kind = .{ .push = null },