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mcp: use io poll for stdin and integrate message loop

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Replaces blocking stdin reads with `std.io.poll` to allow macrotasks to
run. Removes the stdout mutex as I/O is now serialized.
This commit is contained in:
Adrià Arrufat
2026-03-02 10:04:23 +09:00
parent 42b5e32473
commit 41b81c8b05
2 changed files with 38 additions and 33 deletions
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12
src/mcp/Server.zig
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@@ -18,8 +18,6 @@ page: *lp.Page,
is_running: std.atomic.Value(bool) = .init(false),
stdout_mutex: std.Thread.Mutex = .{},
pub fn init(allocator: std.mem.Allocator, app: *App) !*Self {
const self = try allocator.create(Self);
errdefer allocator.destroy(self);
@@ -55,13 +53,9 @@ pub fn deinit(self: *Self) void {
self.allocator.destroy(self);
}
pub fn sendResponse(self: *Self, response: anytype) !void {
self.stdout_mutex.lock();
defer self.stdout_mutex.unlock();
var stdout_file = std.fs.File.stdout();
var stdout_buf: [8192]u8 = undefined;
var stdout = stdout_file.writer(&stdout_buf);
pub fn sendResponse(_: *Self, response: anytype) !void {
var buffer: [8192]u8 = undefined;
var stdout = std.fs.File.stdout().writer(&buffer);
try std.json.Stringify.value(response, .{ .emit_null_optional_fields = false }, &stdout.interface);
try stdout.interface.writeByte('\n');
try stdout.interface.flush();