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46 lines
1.6 KiB
Zig
46 lines
1.6 KiB
Zig
// SPDX-License-Identifier: MIT
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// Copyright (c) 2015-2021 Zig Contributors
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// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
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// The MIT license requires this copyright notice to be included in all copies
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// and substantial portions of the software.
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const std = @import("std");
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const mem = std.mem;
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const warn = std.debug.warn;
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const Tokenizer = std.zig.Tokenizer;
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const Parser = std.zig.Parser;
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const io = std.io;
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const fmtIntSizeBin = std.fmt.fmtIntSizeBin;
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const source = @embedFile("../os.zig");
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var fixed_buffer_mem: [10 * 1024 * 1024]u8 = undefined;
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pub fn main() !void {
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var i: usize = 0;
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var timer = try std.time.Timer.start();
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const start = timer.lap();
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const iterations = 100;
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var memory_used: usize = 0;
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while (i < iterations) : (i += 1) {
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memory_used += testOnce();
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}
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const end = timer.read();
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memory_used /= iterations;
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const elapsed_s = @intToFloat(f64, end - start) / std.time.ns_per_s;
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const bytes_per_sec_float = @intToFloat(f64, source.len * iterations) / elapsed_s;
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const bytes_per_sec = @floatToInt(u64, @floor(bytes_per_sec_float));
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var stdout_file = std.io.getStdOut();
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const stdout = stdout_file.writer();
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try stdout.print("parsing speed: {:.2}/s, {:.2} used \n", .{
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fmtIntSizeBin(bytes_per_sec),
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fmtIntSizeBin(memory_used),
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});
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}
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fn testOnce() usize {
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var fixed_buf_alloc = std.heap.FixedBufferAllocator.init(fixed_buffer_mem[0..]);
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var allocator = &fixed_buf_alloc.allocator;
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_ = std.zig.parse(allocator, source) catch @panic("parse failure");
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return fixed_buf_alloc.end_index;
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}
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