Commit c42ff8d7185789845d5986af43aa66f9fdd90c5a | lib/zig/tracer

author	Meghan Denny <hello@nektro.net> 2026-04-26 19:15:51 -07:00
committer	Meghan Denny <hello@nektro.net> 2026-04-27 20:59:51 -07:00
log	c42ff8d7185789845d5986af43aa66f9fdd90c5a
tree	2f495ef22f096092ac6cccf6bee0c9f3925495d6
parent	ccbff4bf3ad50eaba9a89f8dffbd37fd8b5099ad
signature	Signed by SSH key SHA256:4hHJbtBRU58AYXwjL7fkz2fnQHdiye8x1QpTCQ0sHNw

7 files changed, 31 insertions(+), 20 deletions(-)

README.md+3-2

...	...	@@ -15,17 +15,18 @@ in your program:
15	15	```zig
16	16	const std = @import("std");
17	17	const tracer = @import("tracer");
	18	const nfs = @import("nfs");
18	19	pub const build_options = @import("build_options");
19	20
20	21	pub const tracer_impl = tracer.spall; // see 'Backends' section below
21	22
22	23	pub fn main() !void {
23		try tracer.init();
	24	try tracer.init(.{});
24	25	defer tracer.deinit();
25	26
26	27	// main loop
27	28	while (true) {
28		try tracer.init_thread();
	29	try tracer.init_thread(.{nfs.cwd()});
29	30	defer tracer.deinit_thread();
30	31
31	32	handler();

src/chrome.zig+4-2

...	...	@@ -14,7 +14,8 @@ threadlocal var path: [:0]const u8 = undefined;
14	14	threadlocal var file: nfs.File = undefined;
15	15	threadlocal var buffered_writer: nio.BufferedWriter(4096, nfs.File) = undefined;
16	16
17		pub fn init() !void {
	17	pub fn init(args: struct {}) !void {
	18	_ = args;
18	19	pid = linux.getpid();
19	20	}
20	21
...	...	@@ -22,7 +23,8 @@ pub fn deinit() void {
22	23	//
23	24	}
24	25
25		pub fn init_thread(dir: nfs.Dir) !void {
	26	pub fn init_thread(args: struct { nfs.Dir }) !void {
	27	const dir = args[0];
26	28	tid = linux.gettid();
27	29
28	30	path = try std.fmt.allocPrintZ(alloc, "trace.{d}.{d}.chrome.json", .{ pid, tid });

src/log.zig+5-4

...	...	@@ -1,14 +1,15 @@
1	1	const std = @import("std");
2	2	const tracer = @import("./mod.zig");
3	3	const log = std.log.scoped(.tracer);
4		const nfs = @import("nfs");
5	4
6		pub fn init() !void {}
	5	pub fn init(args: struct {}) !void {
	6	_ = args;
	7	}
7	8
8	9	pub fn deinit() void {}
9	10
10		pub fn init_thread(dir: nfs.Dir) !void {
11		_ = dir;
	11	pub fn init_thread(args: struct {}) !void {
	12	_ = args;
12	13	}
13	14
14	15	pub fn deinit_thread() void {}

src/main.zig+6-2

...	...	@@ -13,14 +13,18 @@ pub const tracer_impl = switch (build_options.backend) {
13	13	};
14	14
15	15	pub fn main() !void {
16		try tracer.init();
	16	try tracer.init(.{});
17	17	defer tracer.deinit();
18	18
19	19	// main loop
20	20	var go = false;
21	21	_ = &go;
22	22	while (go) {
23		try tracer.init_thread(nfs.cwd());
	23	try tracer.init_thread(switch (build_options.backend) {
	24	0, 1 => .{},
	25	2, 3 => .{nfs.cwd()},
	26	else => comptime unreachable,
	27	});
24	28	defer tracer.deinit_thread();
25	29
26	30	handler();

src/mod.zig+4-4

...	...	@@ -11,16 +11,16 @@ pub const log = @import("./log.zig");
11	11	pub const chrome = @import("./chrome.zig");
12	12	pub const spall = @import("./spall.zig");
13	13
14		pub fn init() !void {
15		try impl.init();
	14	pub fn init(args: @typeInfo(@TypeOf(impl.init)).@"fn".params[0].type.?) !void {
	15	try impl.init(args);
16	16	}
17	17
18	18	pub fn deinit() void {
19	19	impl.deinit();
20	20	}
21	21
22		pub fn init_thread(dir: ?nfs.Dir) !void {
23		try impl.init_thread(dir orelse nfs.cwd());
	22	pub fn init_thread(args: @typeInfo(@TypeOf(impl.init_thread)).@"fn".params[0].type.?) !void {
	23	try impl.init_thread(args);
24	24	started = true;
25	25	}
26	26

src/none.zig+5-4

...	...	@@ -1,14 +1,15 @@
1	1	const std = @import("std");
2	2	const tracer = @import("./mod.zig");
3	3	const log = std.log.scoped(.tracer);
4		const nfs = @import("nfs");
5	4
6		pub fn init() !void {}
	5	pub fn init(args: struct {}) !void {
	6	_ = args;
	7	}
7	8
8	9	pub fn deinit() void {}
9	10
10		pub fn init_thread(dir: nfs.Dir) !void {
11		_ = dir;
	11	pub fn init_thread(args: struct {}) !void {
	12	_ = args;
12	13	}
13	14
14	15	pub fn deinit_thread() void {}

src/spall.zig+4-2

...	...	@@ -14,7 +14,8 @@ threadlocal var path: [:0]const u8 = undefined;
14	14	threadlocal var file: nfs.File = undefined;
15	15	threadlocal var buffered_writer: nio.BufferedWriter(4096, nfs.File) = undefined;
16	16
17		pub fn init() !void {
	17	pub fn init(args: struct {}) !void {
	18	_ = args;
18	19	pid = linux.getpid();
19	20	}
20	21
...	...	@@ -22,7 +23,8 @@ pub fn deinit() void {
22	23	//
23	24	}
24	25
25		pub fn init_thread(dir: nfs.Dir) !void {
	26	pub fn init_thread(args: struct { nfs.Dir }) !void {
	27	const dir = args[0];
26	28	tid = linux.gettid();
27	29
28	30	path = try std.fmt.allocPrintZ(alloc, "{d}.{d}.spall", .{ pid, tid });