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refactor: improve event framing in linux watcher

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This commit is contained in:
CJ van den Berg 2025-12-04 14:32:47 +01:00
parent 9d758d9823
commit 327df84e77
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 10 additions and 7 deletions
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17
src/watcher/LinuxWatcher.zig
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@ -285,17 +285,20 @@ pub fn start(watcher: *LinuxWatcher) !void {
t.detach(); t.detach();
} }
pub fn listen(watcher: *LinuxWatcher) !void { fn listen(watcher: *LinuxWatcher) !void {
const gpa = watcher.gpa; const gpa = watcher.gpa;
const Event = std.os.linux.inotify_event; const Event = std.os.linux.inotify_event;
const event_size = @sizeOf(Event); const event_size = @sizeOf(Event);
while (true) { var buffer: [event_size * 10]u8 = undefined;
var buffer: [event_size * 10]u8 = undefined; var event_data: []u8 = buffer[0..0];
const len = try std.posix.read(watcher.notify_fd, &buffer); while (true) : ({
if (len < 0) @panic("notify fd read error"); std.mem.copyForwards(u8, buffer[0..], event_data);
event_data = buffer[0..event_data.len];
}) {
const len = try std.posix.read(watcher.notify_fd, buffer[event_data.len..]);
event_data = buffer[0 .. event_data.len + len];
var event_data = buffer[0..len]; while (event_data.len > event_size) {
while (event_data.len > 0) {
const event: *Event = @ptrCast(@alignCast(event_data[0..event_size])); const event: *Event = @ptrCast(@alignCast(event_data[0..event_size]));
const parent = watcher.watch_fds.get(event.wd).?; const parent = watcher.watch_fds.get(event.wd).?;
event_data = event_data[event_size + event.len ..]; event_data = event_data[event_size + event.len ..];