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https://github.com/ghostty-org/ghostty.git
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e8525c0fd9
This commit represents the majority of the work necessary to upgrade Ghostty to use Zig 0.16.0. Key parts: * In addition to its previous responsibilities, the global state now houses state for global I/O implementations and the process environment. It is now also utilized in the main application along with the C library. Where necessary, global state is isolated from key parts of the implementation (e.g., in libghostty subsystems), and it's expected that this list will grow. * We currently manage our own C translation layer where necessary. In these cases, cImport has been removed in favor of the new external translate-c package. Due to fixes that have needed be made to properly translate the dependencies that were swapped out, as mentioned, we have had to backport fixes from the current translate-c package (and the upstream Arocc dependency). We will host this ourselves until Zig 0.17.0 is released with these fixes. * Where necessary (only a small number of cases), some stdlib code from 0.15.2 (and even from 0.17.0) has been taken, adopted, and vendored in lib/compat. Co-authored-by: Leah Amelia Chen <hi@pluie.me>
28 lines
1.1 KiB
Zig
28 lines
1.1 KiB
Zig
const std = @import("std");
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const global = @import("../global.zig");
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const log = std.log.scoped(.@"linux-cgroup");
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/// Returns the path to the cgroup for the given pid.
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pub fn current(buf: []u8, pid: u32) ?[]const u8 {
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var path_buf: [std.fs.max_path_bytes]u8 = undefined;
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// Read our cgroup by opening /proc/<pid>/cgroup and reading the first
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// line. The first line will look something like this:
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// 0::/user.slice/user-1000.slice/session-1.scope
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// The cgroup path is the third field.
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const path = std.fmt.bufPrint(&path_buf, "/proc/{}/cgroup", .{pid}) catch return null;
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const file = std.Io.Dir.openFileAbsolute(global.io(), path, .{}) catch return null;
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defer file.close(global.io());
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var read_buf: [64]u8 = undefined;
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var file_reader = file.reader(global.io(), &read_buf);
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const reader = &file_reader.interface;
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const len = reader.readSliceShort(buf) catch return null;
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const contents = buf[0..len];
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// Find the last ':'
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const idx = std.mem.lastIndexOfScalar(u8, contents, ':') orelse return null;
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return std.mem.trimEnd(u8, contents[idx + 1 ..], " \r\n");
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}
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