Nops (#77)

bench: add coro_nops benchmark

bench/coro_nops.zig

@@ -0,0 +1,39 @@
+const std = @import("std");
+const aio = @import("aio");
+const coro = @import("coro");
+const log = std.log.scoped(.coro_nops);
+
+pub const std_options: std.Options = .{
+    .log_level = .debug,
+};
+
+const TOTAL_NOPS = 2_500_000;
+
+fn nopLoop(total: usize) !void {
+    var i: usize = 0;
+    while (i < total) {
+        try coro.io.single(.nop, .{});
+        i += 1;
+    }
+}
+
+pub fn main() !void {
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+
+    const allocator = gpa.allocator();
+
+    var scheduler = try coro.Scheduler.init(allocator, .{});
+    defer scheduler.deinit();
+
+    _ = try scheduler.spawn(nopLoop, .{TOTAL_NOPS}, .{});
+
+    const start_time = try std.time.Instant.now();
+    try scheduler.run(.wait);
+    const end_time = try std.time.Instant.now();
+
+    const elapsed: f64 = @floatFromInt(end_time.since(start_time));
+    const nops_s: f64 = @as(f64, @floatFromInt(TOTAL_NOPS)) / (elapsed / 1e9);
+    log.info("{d:.2} nops/s", .{nops_s});
+    log.info("{d:.2} seconds total", .{elapsed / 1e9});
+}

build.zig

@@ -154,6 +154,7 @@ pub fn build(b: *std.Build) void {
         .ping_pongs,
         .ticker,
         .flow,
+        .coro_nops,
     }) |bench| {
         const exe = b.addExecutable(.{
             .name = @tagName(bench),