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https://github.com/ziglang/zig.git
synced 2025-12-08 07:13:08 +00:00
f26dda2117
Most of this migration was performed automatically with `zig fmt`. There were a few exceptions which I had to manually fix: * `@alignCast` and `@addrSpaceCast` cannot be automatically rewritten * `@truncate`'s fixup is incorrect for vectors * Test cases are not formatted, and their error locations change
39 lines
1.3 KiB
Zig
39 lines
1.3 KiB
Zig
const std = @import("std");
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const mem = std.mem;
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const Tokenizer = std.zig.Tokenizer;
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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 = @as(f64, @floatFromInt(end - start)) / std.time.ns_per_s;
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const bytes_per_sec_float = @as(f64, @floatFromInt(source.len * iterations)) / elapsed_s;
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const bytes_per_sec = @as(u64, @intFromFloat(@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.Ast.parse(allocator, source, .zig) catch @panic("parse failure");
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return fixed_buf_alloc.end_index;
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}
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