debug.zig
8755416ca476master

debug.zig
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			const std = @import("std");
			const builtin = @import("builtin");

			pub var enabled: bool = false;

			pub fn log(comptime fmt: []const u8, args: anytype) void {
			if (!enabled) return;

			var buf: [2048]u8 = undefined;
			const msg = std.fmt.bufPrint(&buf, "[pkg] " ++ fmt ++ "\n", args) catch return;

			if (comptime builtin.os.tag == .windows) {
			const handle = std.os.windows.GetStdHandle(std.os.windows.STD_ERROR_HANDLE) catch return;
			_ = std.os.windows.WriteFile(handle, msg, null) catch {};
			} else _ = std.c.write(2, msg.ptr, msg.len);
			}

			pub fn timer(comptime label: []const u8, start: u64) u64 {
			if (!enabled) return start;

			const now = std.time.nanoTimestamp();
			const elapsed_ns: u64 = @intCast(now - @as(i128, start));
			const elapsed_ms = elapsed_ns / 1_000_000;

			log("{s}: {d}ms", .{ label, elapsed_ms });

			return @intCast(now);
			}