Update num_threads and fixed headers

Author: dravenk

frameworks/Zig/zinc/build.zig.zon

@@ -4,7 +4,7 @@
     .dependencies = .{
         .zinc = .{
             .url = "https://github.com/zon-dev/zinc/archive/refs/heads/main.zip",
-            .hash = "1220bbd81a53f8268d970dfbf92268c36a25b50978dd8e7dcbf551e69b2c03677e33",
+            .hash = "12201f5d2138d81c9aa85bf18a550df6329d98f02645bc5f9e1eb82b2ed98d211bb6",
         },
         .@"zig-datetime" = .{
             .url = "https://github.com/frmdstryr/zig-datetime/archive/refs/heads/master.zip",

frameworks/Zig/zinc/src/main.zig

@@ -3,18 +3,29 @@ const zinc = @import("zinc");
 const Datetime = @import("datetime").datetime.Datetime;
 
 pub fn main() !void {
-    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
-    const allocator = gpa.allocator();
-
-    var z = try zinc.init(.{ .port = 8080, .allocator = allocator, .num_threads = 255 });
+    var gpa = std.heap.GeneralPurposeAllocator(.{
+        .thread_safe = true,
+    }){};
+    var tsa = std.heap.ThreadSafeAllocator{
+        .child_allocator = gpa.allocator(),
+    };
+    const allocator = tsa.allocator();
+
+    const cpuCount = @as(u8, @intCast(std.Thread.getCpuCount() catch 1));
+
+    var z = try zinc.init(.{
+        .port = 8080,
+        .allocator = allocator,
+        .num_threads = 16 * cpuCount,
+    });
 
     var router = z.getRouter();
     try router.use(&.{setupHeader});
 
     try router.get("/json", json);
     try router.get("/plaintext", plaintext);
 
-    try z.run();
+    z.run() catch |err| std.debug.print("Error: {any}\n", .{err});
 }
 
 fn plaintext(ctx: *zinc.Context) anyerror!void {
@@ -27,12 +38,10 @@ fn json(ctx: *zinc.Context) anyerror!void {
 
 fn setupHeader(ctx: *zinc.Context) anyerror!void {
     try ctx.setHeader("Server", "Zinc");
-    // try ctx.setHeader("date", "Sun Sep 22 10:01:11 CEST 2024");
-    // In UTC
+    try ctx.setHeader("Connection", "keep-alive");
+
     const now = Datetime.now();
     const now_str = try now.formatHttp(ctx.allocator);
-    // defer ctx.allocator.free(now_str);
-    // std.debug.warn("The time is now: {}\n", .{now_str});
     // The time is now: Fri, 20 Dec 2019 22:03:02 UTC
     try ctx.setHeader("date", now_str);
 }