1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
const strings = @import("bun").strings;
const std = @import("std");
pub fn main() anyerror!void {
const args = try std.process.argsAlloc(std.heap.c_allocator);
const filepath = args[args.len - 3];
const find = args[args.len - 2];
const amount = try std.fmt.parseInt(usize, args[args.len - 1], 10);
var file = try std.fs.cwd().openFile(filepath, .{ .mode = .read_only });
var contents = try file.readToEndAlloc(std.heap.c_allocator, std.math.maxInt(usize));
var list = try std.ArrayList(u8).initCapacity(std.heap.c_allocator, contents.len);
var duped = list.items.ptr[0..contents.len];
{
var timer = try std.time.Timer.start();
var index: usize = std.math.maxInt(usize);
var j: usize = 0;
var i: usize = 0;
while (j < amount) : (j += 1) {
i = 0;
strings.copy(duped, contents);
}
if (index == std.math.maxInt(usize)) {
std.debug.print("manual [{d} byte file] {s} NOT found in {}\n", .{ contents.len, find, std.fmt.fmtDuration(timer.read()) });
} else {
std.debug.print("manual [{d} byte file] {s} found at {d} in {}\n", .{ contents.len, find, index, std.fmt.fmtDuration(timer.read()) });
}
}
{
var timer = try std.time.Timer.start();
var index: usize = std.math.maxInt(usize);
var j: usize = 0;
var i: usize = 0;
while (j < amount) : (j += 1) {
i = 0;
@memcpy(duped.ptr, contents.ptr, contents.len);
}
if (index == std.math.maxInt(usize)) {
std.debug.print("memcpy [{d} byte file] {s} NOT found in {}\n", .{ contents.len, find, std.fmt.fmtDuration(timer.read()) });
} else {
std.debug.print("memcpy [{d} byte file] {s} found at {d} in {}\n", .{ contents.len, find, index, std.fmt.fmtDuration(timer.read()) });
}
}
{
var timer = try std.time.Timer.start();
var index: usize = std.math.maxInt(usize);
var j: usize = 0;
var i: usize = 0;
while (j < amount) : (j += 1) {
i = 0;
list.clearRetainingCapacity();
list.appendSliceAssumeCapacity(contents);
}
if (index == std.math.maxInt(usize)) {
std.debug.print("ArrayList [{d} byte file] {s} NOT found in {}\n", .{ contents.len, find, std.fmt.fmtDuration(timer.read()) });
} else {
std.debug.print("ArrayList [{d} byte file] {s} found at {d} in {}\n", .{ contents.len, find, index, std.fmt.fmtDuration(timer.read()) });
}
}
}
|
