mirror of
https://github.com/oven-sh/bun
synced 2026-02-10 02:48:50 +00:00
823 lines
30 KiB
Zig
823 lines
30 KiB
Zig
const Fs = @import("./fs.zig");
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const std = @import("std");
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const bun = @import("global.zig");
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const string = bun.string;
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const Output = bun.Output;
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const Global = bun.Global;
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const Environment = bun.Environment;
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const strings = bun.strings;
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const MutableString = bun.MutableString;
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const stringZ = bun.stringZ;
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const StoredFileDescriptorType = bun.StoredFileDescriptorType;
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const FeatureFlags = bun.FeatureFlags;
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const default_allocator = bun.default_allocator;
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const C = bun.C;
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const c = std.c;
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const options = @import("./options.zig");
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const IndexType = @import("./allocators.zig").IndexType;
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const os = std.os;
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const Mutex = @import("./lock.zig").Lock;
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const Futex = @import("./futex.zig");
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pub const WatchItemIndex = u16;
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const NoWatchItem: WatchItemIndex = std.math.maxInt(WatchItemIndex);
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const PackageJSON = @import("./resolver/package_json.zig").PackageJSON;
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const WATCHER_MAX_LIST = 8096;
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pub const INotify = struct {
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pub const IN_CLOEXEC = std.os.O.CLOEXEC;
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pub const IN_NONBLOCK = std.os.O.NONBLOCK;
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pub const IN_ACCESS = 0x00000001;
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pub const IN_MODIFY = 0x00000002;
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pub const IN_ATTRIB = 0x00000004;
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pub const IN_CLOSE_WRITE = 0x00000008;
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pub const IN_CLOSE_NOWRITE = 0x00000010;
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pub const IN_CLOSE = IN_CLOSE_WRITE | IN_CLOSE_NOWRITE;
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pub const IN_OPEN = 0x00000020;
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pub const IN_MOVED_FROM = 0x00000040;
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pub const IN_MOVED_TO = 0x00000080;
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pub const IN_MOVE = IN_MOVED_FROM | IN_MOVED_TO;
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pub const IN_CREATE = 0x00000100;
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pub const IN_DELETE = 0x00000200;
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pub const IN_DELETE_SELF = 0x00000400;
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pub const IN_MOVE_SELF = 0x00000800;
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pub const IN_ALL_EVENTS = 0x00000fff;
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pub const IN_UNMOUNT = 0x00002000;
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pub const IN_Q_OVERFLOW = 0x00004000;
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pub const IN_IGNORED = 0x00008000;
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pub const IN_ONLYDIR = 0x01000000;
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pub const IN_DONT_FOLLOW = 0x02000000;
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pub const IN_EXCL_UNLINK = 0x04000000;
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pub const IN_MASK_ADD = 0x20000000;
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pub const IN_ISDIR = 0x40000000;
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pub const IN_ONESHOT = 0x80000000;
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pub const EventListIndex = c_int;
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pub const INotifyEvent = extern struct {
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watch_descriptor: c_int,
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mask: u32,
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cookie: u32,
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name_len: u32,
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pub fn name(this: *const INotifyEvent) [:0]u8 {
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if (comptime Environment.allow_assert) std.debug.assert(this.name_len > 0);
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// the name_len field is wrong
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// it includes alignment / padding
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// but it is a sentineled value
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// so we can just trim it to the first null byte
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return std.mem.sliceTo(@intToPtr([*]u8, @ptrToInt(this) + @sizeOf(INotifyEvent))[0..this.name_len :0], 0);
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}
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};
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pub var inotify_fd: EventListIndex = 0;
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pub var loaded_inotify = false;
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const EventListBuffer = [@sizeOf([128]INotifyEvent) + (128 * bun.MAX_PATH_BYTES)]u8;
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var eventlist: EventListBuffer = undefined;
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var eventlist_ptrs: [128]*const INotifyEvent = undefined;
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var watch_count: std.atomic.Atomic(u32) = std.atomic.Atomic(u32).init(0);
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const watch_file_mask = IN_EXCL_UNLINK | IN_MOVE_SELF | IN_DELETE_SELF | IN_CLOSE_WRITE | IN_MOVED_TO;
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const watch_dir_mask = IN_EXCL_UNLINK | IN_DELETE | IN_DELETE_SELF | IN_CREATE | IN_MOVE_SELF | IN_ONLYDIR | IN_MOVED_TO;
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pub fn watchPath(pathname: [:0]const u8) !EventListIndex {
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std.debug.assert(loaded_inotify);
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const old_count = watch_count.fetchAdd(1, .Release);
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defer if (old_count == 0) Futex.wake(&watch_count, 10);
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return std.os.inotify_add_watchZ(inotify_fd, pathname, watch_file_mask);
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}
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pub fn watchDir(pathname: [:0]const u8) !EventListIndex {
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std.debug.assert(loaded_inotify);
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const old_count = watch_count.fetchAdd(1, .Release);
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defer if (old_count == 0) Futex.wake(&watch_count, 10);
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return std.os.inotify_add_watchZ(inotify_fd, pathname, watch_dir_mask);
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}
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pub fn unwatch(wd: EventListIndex) void {
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std.debug.assert(loaded_inotify);
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_ = watch_count.fetchSub(1, .Release);
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std.os.inotify_rm_watch(inotify_fd, wd);
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}
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pub fn init() !void {
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std.debug.assert(!loaded_inotify);
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loaded_inotify = true;
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inotify_fd = try std.os.inotify_init1(IN_CLOEXEC);
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}
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pub fn read() ![]*const INotifyEvent {
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std.debug.assert(loaded_inotify);
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restart: while (true) {
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Futex.wait(&watch_count, 0, null) catch unreachable;
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const rc = std.os.system.read(
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inotify_fd,
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@ptrCast([*]u8, @alignCast(@alignOf([*]u8), &eventlist)),
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@sizeOf(EventListBuffer),
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);
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switch (std.os.errno(rc)) {
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.SUCCESS => {
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const len = @intCast(usize, rc);
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if (len == 0) return &[_]*INotifyEvent{};
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var count: u32 = 0;
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var i: u32 = 0;
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while (i < len) : (i += @sizeOf(INotifyEvent)) {
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const event = @ptrCast(*const INotifyEvent, @alignCast(@alignOf(*const INotifyEvent), eventlist[i..][0..@sizeOf(INotifyEvent)]));
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i += event.name_len;
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eventlist_ptrs[count] = event;
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count += 1;
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}
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return eventlist_ptrs[0..count];
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},
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.AGAIN => continue :restart,
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.INVAL => return error.ShortRead,
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.BADF => return error.INotifyFailedToStart,
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else => unreachable,
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}
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}
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unreachable;
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}
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pub fn stop() void {
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if (inotify_fd != 0) {
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std.os.close(inotify_fd);
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inotify_fd = 0;
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}
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}
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};
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const DarwinWatcher = struct {
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pub const EventListIndex = u32;
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const KEvent = std.c.Kevent;
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// Internal
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pub var changelist: [128]KEvent = undefined;
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// Everything being watched
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pub var eventlist: [WATCHER_MAX_LIST]KEvent = undefined;
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pub var eventlist_index: EventListIndex = 0;
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pub var fd: i32 = 0;
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pub fn init() !void {
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std.debug.assert(fd == 0);
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fd = try std.os.kqueue();
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if (fd == 0) return error.KQueueError;
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}
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pub fn stop() void {
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if (fd != 0) {
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std.os.close(fd);
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}
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fd = 0;
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}
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};
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pub const Placeholder = struct {
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pub const EventListIndex = u32;
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pub var eventlist: [WATCHER_MAX_LIST]EventListIndex = undefined;
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pub var eventlist_index: EventListIndex = 0;
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};
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const PlatformWatcher = if (Environment.isMac)
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DarwinWatcher
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else if (Environment.isLinux)
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INotify
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else
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Placeholder;
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pub const WatchItem = struct {
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file_path: string,
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// filepath hash for quick comparison
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hash: u32,
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eventlist_index: PlatformWatcher.EventListIndex,
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loader: options.Loader,
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fd: StoredFileDescriptorType,
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count: u32,
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parent_hash: u32,
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kind: Kind,
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package_json: ?*PackageJSON,
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pub const Kind = enum { file, directory };
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};
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pub const WatchEvent = struct {
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index: WatchItemIndex,
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op: Op,
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name_off: u8 = 0,
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name_len: u8 = 0,
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pub fn names(this: WatchEvent, buf: []?[:0]u8) []?[:0]u8 {
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if (this.name_len == 0) return &[_]?[:0]u8{};
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return buf[this.name_off..][0..this.name_len];
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}
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const KEvent = std.c.Kevent;
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pub const Sorter = void;
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pub fn sortByIndex(_: Sorter, event: WatchEvent, rhs: WatchEvent) bool {
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return event.index < rhs.index;
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}
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pub fn merge(this: *WatchEvent, other: WatchEvent) void {
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this.name_len += other.name_len;
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this.op = Op{
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.delete = this.op.delete or other.op.delete,
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.metadata = this.op.metadata or other.op.metadata,
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.rename = this.op.rename or other.op.rename,
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.write = this.op.write or other.op.write,
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};
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}
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pub fn fromKEvent(this: *WatchEvent, kevent: KEvent) void {
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this.* =
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WatchEvent{
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.op = Op{
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.delete = (kevent.fflags & std.c.NOTE_DELETE) > 0,
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.metadata = (kevent.fflags & std.c.NOTE_ATTRIB) > 0,
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.rename = (kevent.fflags & std.c.NOTE_RENAME) > 0,
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.write = (kevent.fflags & std.c.NOTE_WRITE) > 0,
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},
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.index = @truncate(WatchItemIndex, kevent.udata),
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};
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}
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pub fn fromINotify(this: *WatchEvent, event: INotify.INotifyEvent, index: WatchItemIndex) void {
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this.* = WatchEvent{
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.op = Op{
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.delete = (event.mask & INotify.IN_DELETE_SELF) > 0 or (event.mask & INotify.IN_DELETE) > 0,
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.metadata = false,
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.rename = (event.mask & INotify.IN_MOVE_SELF) > 0,
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.move_to = (event.mask & INotify.IN_MOVED_TO) > 0,
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.write = (event.mask & INotify.IN_MODIFY) > 0,
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},
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.index = index,
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};
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}
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pub const Op = packed struct {
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padding: u3 = 0,
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delete: bool = false,
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metadata: bool = false,
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rename: bool = false,
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write: bool = false,
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move_to: bool = false,
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};
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};
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pub const Watchlist = std.MultiArrayList(WatchItem);
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// This implementation only works on macOS, for now.
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// The Internet seems to suggest basically always using FSEvents instead of kqueue
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// It seems like the main concern is max open file descriptors
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// Since we adjust the ulimit already, I think we can avoid that.
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pub fn NewWatcher(comptime ContextType: type) type {
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return struct {
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const Watcher = @This();
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watchlist: Watchlist,
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watched_count: usize = 0,
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mutex: Mutex,
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platform: PlatformWatcher = PlatformWatcher{},
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// User-facing
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watch_events: [128]WatchEvent = undefined,
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changed_filepaths: [128]?[:0]u8 = std.mem.zeroes([128]?[:0]u8),
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fs: *Fs.FileSystem,
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// this is what kqueue knows about
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fd: StoredFileDescriptorType,
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ctx: ContextType,
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allocator: std.mem.Allocator,
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watchloop_handle: ?std.Thread.Id = null,
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cwd: string,
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thread: std.Thread = undefined,
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pub const HashType = u32;
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var evict_list: [WATCHER_MAX_LIST]WatchItemIndex = undefined;
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pub fn getHash(filepath: string) HashType {
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return @truncate(HashType, std.hash.Wyhash.hash(0, filepath));
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}
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pub fn init(ctx: ContextType, fs: *Fs.FileSystem, allocator: std.mem.Allocator) !*Watcher {
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var watcher = try allocator.create(Watcher);
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try PlatformWatcher.init();
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watcher.* = Watcher{
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.fs = fs,
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.fd = 0,
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.allocator = allocator,
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.watched_count = 0,
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.ctx = ctx,
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.watchlist = Watchlist{},
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.mutex = Mutex.init(),
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.cwd = fs.top_level_dir,
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};
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return watcher;
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}
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pub fn start(this: *Watcher) !void {
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std.debug.assert(this.watchloop_handle == null);
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this.thread = try std.Thread.spawn(.{}, Watcher.watchLoop, .{this});
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}
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// This must only be called from the watcher thread
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pub fn watchLoop(this: *Watcher) !void {
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this.watchloop_handle = std.Thread.getCurrentId();
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Output.Source.configureNamedThread(this.thread, "File Watcher");
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defer Output.flush();
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if (FeatureFlags.verbose_watcher) Output.prettyln("Watcher started", .{});
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this._watchLoop() catch |err| {
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Output.prettyErrorln("<r>Watcher crashed: <red><b>{s}<r>", .{@errorName(err)});
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this.watchloop_handle = null;
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PlatformWatcher.stop();
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return;
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};
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}
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var evict_list_i: WatchItemIndex = 0;
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pub fn removeAtIndex(_: *Watcher, index: WatchItemIndex, hash: HashType, parents: []HashType, comptime kind: WatchItem.Kind) void {
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std.debug.assert(index != NoWatchItem);
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evict_list[evict_list_i] = index;
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evict_list_i += 1;
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if (comptime kind == .directory) {
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for (parents) |parent| {
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if (parent == hash) {
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evict_list[evict_list_i] = @truncate(WatchItemIndex, parent);
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evict_list_i += 1;
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}
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}
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}
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}
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pub fn flushEvictions(this: *Watcher) void {
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if (evict_list_i == 0) return;
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defer evict_list_i = 0;
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// swapRemove messes up the order
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// But, it only messes up the order if any elements in the list appear after the item being removed
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// So if we just sort the list by the biggest index first, that should be fine
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std.sort.sort(
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WatchItemIndex,
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evict_list[0..evict_list_i],
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{},
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comptime std.sort.desc(WatchItemIndex),
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);
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var slice = this.watchlist.slice();
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var fds = slice.items(.fd);
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var last_item = NoWatchItem;
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for (evict_list[0..evict_list_i]) |item| {
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// catch duplicates, since the list is sorted, duplicates will appear right after each other
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if (item == last_item) continue;
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// close the file descriptors here. this should automatically remove it from being watched too.
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std.os.close(fds[item]);
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// if (Environment.isLinux) {
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// INotify.unwatch(event_list_ids[item]);
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// }
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last_item = item;
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}
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last_item = NoWatchItem;
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// This is split into two passes because reading the slice while modified is potentially unsafe.
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for (evict_list[0..evict_list_i]) |item| {
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if (item == last_item) continue;
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this.watchlist.swapRemove(item);
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last_item = item;
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}
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}
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fn _watchLoop(this: *Watcher) !void {
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if (Environment.isMac) {
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std.debug.assert(DarwinWatcher.fd > 0);
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const KEvent = std.c.Kevent;
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var changelist_array: [1]KEvent = std.mem.zeroes([1]KEvent);
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var changelist = &changelist_array;
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while (true) {
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defer Output.flush();
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_ = std.os.system.kevent(
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DarwinWatcher.fd,
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@as([*]KEvent, changelist),
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0,
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@as([*]KEvent, changelist),
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1,
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null,
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);
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var watchevents = this.watch_events[0..1];
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for (changelist) |event, i| {
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watchevents[i].fromKEvent(event);
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}
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this.mutex.lock();
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defer this.mutex.unlock();
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this.ctx.onFileUpdate(watchevents, this.changed_filepaths[0..watchevents.len], this.watchlist);
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}
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} else if (Environment.isLinux) {
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restart: while (true) {
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defer Output.flush();
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var events = try INotify.read();
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if (events.len == 0) continue :restart;
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// TODO: is this thread safe?
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var remaining_events = events.len;
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var name_off: u8 = 0;
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var temp_name_list: [128]?[:0]u8 = undefined;
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var temp_name_off: u8 = 0;
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const eventlist_index = this.watchlist.items(.eventlist_index);
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while (remaining_events > 0) {
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const slice = events[0..@minimum(remaining_events, this.watch_events.len)];
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var watchevents = this.watch_events[0..slice.len];
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var watch_event_id: u32 = 0;
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for (slice) |event| {
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watchevents[watch_event_id].fromINotify(
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event.*,
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@intCast(
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WatchItemIndex,
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std.mem.indexOfScalar(
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INotify.EventListIndex,
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|
eventlist_index,
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event.watch_descriptor,
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|
) orelse continue,
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),
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);
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temp_name_list[temp_name_off] = if (event.name_len > 0)
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event.name()
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else
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null;
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watchevents[watch_event_id].name_off = temp_name_off;
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watchevents[watch_event_id].name_len = @as(u8, @boolToInt((event.name_len > 0)));
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temp_name_off += @as(u8, @boolToInt((event.name_len > 0)));
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watch_event_id += 1;
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}
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var all_events = watchevents[0..watch_event_id];
|
|
std.sort.sort(WatchEvent, all_events, void{}, WatchEvent.sortByIndex);
|
|
|
|
var last_event_index: usize = 0;
|
|
var last_event_id: INotify.EventListIndex = std.math.maxInt(INotify.EventListIndex);
|
|
|
|
for (all_events) |_, i| {
|
|
if (all_events[i].name_len > 0) {
|
|
this.changed_filepaths[name_off] = temp_name_list[all_events[i].name_off];
|
|
all_events[i].name_off = name_off;
|
|
name_off += 1;
|
|
}
|
|
|
|
if (all_events[i].index == last_event_id) {
|
|
all_events[last_event_index].merge(all_events[i]);
|
|
continue;
|
|
}
|
|
last_event_index = i;
|
|
last_event_id = all_events[i].index;
|
|
}
|
|
if (all_events.len == 0) continue :restart;
|
|
|
|
this.mutex.lock();
|
|
defer this.mutex.unlock();
|
|
|
|
this.ctx.onFileUpdate(all_events[0 .. last_event_index + 1], this.changed_filepaths[0 .. name_off + 1], this.watchlist);
|
|
remaining_events -= slice.len;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn indexOf(this: *Watcher, hash: HashType) ?u32 {
|
|
for (this.watchlist.items(.hash)) |other, i| {
|
|
if (hash == other) {
|
|
return @truncate(u32, i);
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
pub fn addFile(
|
|
this: *Watcher,
|
|
fd: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
loader: options.Loader,
|
|
dir_fd: StoredFileDescriptorType,
|
|
package_json: ?*PackageJSON,
|
|
comptime copy_file_path: bool,
|
|
) !void {
|
|
this.mutex.lock();
|
|
defer this.mutex.unlock();
|
|
|
|
if (this.indexOf(hash)) |index| {
|
|
if (comptime FeatureFlags.atomic_file_watcher) {
|
|
// On Linux, the file descriptor might be out of date.
|
|
if (fd > 0) {
|
|
var fds = this.watchlist.items(.fd);
|
|
fds[index] = fd;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
try this.appendFileMaybeLock(fd, file_path, hash, loader, dir_fd, package_json, copy_file_path, false);
|
|
}
|
|
|
|
fn appendFileAssumeCapacity(
|
|
this: *Watcher,
|
|
fd: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
loader: options.Loader,
|
|
parent_hash: HashType,
|
|
package_json: ?*PackageJSON,
|
|
comptime copy_file_path: bool,
|
|
) !void {
|
|
var index: PlatformWatcher.EventListIndex = undefined;
|
|
const watchlist_id = this.watchlist.len;
|
|
|
|
const file_path_: string = if (comptime copy_file_path)
|
|
std.mem.span(try this.allocator.dupeZ(u8, file_path))
|
|
else
|
|
file_path;
|
|
|
|
if (comptime Environment.isMac) {
|
|
const KEvent = std.c.Kevent;
|
|
index = DarwinWatcher.eventlist_index;
|
|
|
|
// https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/kqueue.2.html
|
|
var event = std.mem.zeroes(KEvent);
|
|
|
|
event.flags = c.EV_ADD | c.EV_CLEAR | c.EV_ENABLE;
|
|
// we want to know about the vnode
|
|
event.filter = std.c.EVFILT_VNODE;
|
|
|
|
event.fflags = std.c.NOTE_WRITE | std.c.NOTE_RENAME | std.c.NOTE_DELETE;
|
|
|
|
// id
|
|
event.ident = @intCast(usize, fd);
|
|
|
|
DarwinWatcher.eventlist_index += 1;
|
|
|
|
// Store the hash for fast filtering later
|
|
event.udata = @intCast(usize, watchlist_id);
|
|
DarwinWatcher.eventlist[index] = event;
|
|
|
|
// This took a lot of work to figure out the right permutation
|
|
// Basically:
|
|
// - We register the event here.
|
|
// our while(true) loop above receives notification of changes to any of the events created here.
|
|
_ = std.os.system.kevent(
|
|
DarwinWatcher.fd,
|
|
DarwinWatcher.eventlist[index .. index + 1].ptr,
|
|
1,
|
|
DarwinWatcher.eventlist[index .. index + 1].ptr,
|
|
0,
|
|
null,
|
|
);
|
|
} else if (comptime Environment.isLinux) {
|
|
// var file_path_to_use_ = std.mem.trimRight(u8, file_path_, "/");
|
|
// var buf: [bun.MAX_PATH_BYTES+1]u8 = undefined;
|
|
// std.mem.copy(u8, &buf, file_path_to_use_);
|
|
// buf[file_path_to_use_.len] = 0;
|
|
var buf = file_path_.ptr;
|
|
var slice: [:0]const u8 = buf[0..file_path_.len :0];
|
|
index = try INotify.watchPath(slice);
|
|
}
|
|
|
|
this.watchlist.appendAssumeCapacity(.{
|
|
.file_path = std.mem.span(file_path_),
|
|
.fd = fd,
|
|
.hash = hash,
|
|
.count = 0,
|
|
.eventlist_index = index,
|
|
.loader = loader,
|
|
.parent_hash = parent_hash,
|
|
.package_json = package_json,
|
|
.kind = .file,
|
|
});
|
|
}
|
|
|
|
fn appendDirectoryAssumeCapacity(
|
|
this: *Watcher,
|
|
fd_: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
comptime copy_file_path: bool,
|
|
) !WatchItemIndex {
|
|
const fd = brk: {
|
|
if (fd_ > 0) break :brk fd_;
|
|
|
|
const dir = try std.fs.openDirAbsolute(file_path, .{ .iterate = true });
|
|
break :brk @truncate(StoredFileDescriptorType, dir.fd);
|
|
};
|
|
|
|
const parent_hash = Watcher.getHash(Fs.PathName.init(file_path).dirWithTrailingSlash());
|
|
var index: PlatformWatcher.EventListIndex = undefined;
|
|
|
|
const file_path_: string = if (comptime copy_file_path)
|
|
std.mem.span(try this.allocator.dupeZ(u8, file_path))
|
|
else
|
|
file_path;
|
|
|
|
const watchlist_id = this.watchlist.len;
|
|
|
|
if (Environment.isMac) {
|
|
index = DarwinWatcher.eventlist_index;
|
|
const KEvent = std.c.Kevent;
|
|
|
|
// https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/kqueue.2.html
|
|
var event = std.mem.zeroes(KEvent);
|
|
|
|
event.flags = c.EV_ADD | c.EV_CLEAR | c.EV_ENABLE;
|
|
// we want to know about the vnode
|
|
event.filter = std.c.EVFILT_VNODE;
|
|
|
|
// monitor:
|
|
// - Write
|
|
// - Rename
|
|
// - Delete
|
|
event.fflags = std.c.NOTE_WRITE | std.c.NOTE_RENAME | std.c.NOTE_DELETE;
|
|
|
|
// id
|
|
event.ident = @intCast(usize, fd);
|
|
|
|
DarwinWatcher.eventlist_index += 1;
|
|
// Store the hash for fast filtering later
|
|
event.udata = @intCast(usize, watchlist_id);
|
|
DarwinWatcher.eventlist[index] = event;
|
|
|
|
// This took a lot of work to figure out the right permutation
|
|
// Basically:
|
|
// - We register the event here.
|
|
// our while(true) loop above receives notification of changes to any of the events created here.
|
|
_ = std.os.system.kevent(
|
|
DarwinWatcher.fd,
|
|
DarwinWatcher.eventlist[index .. index + 1].ptr,
|
|
1,
|
|
DarwinWatcher.eventlist[index .. index + 1].ptr,
|
|
0,
|
|
null,
|
|
);
|
|
} else if (Environment.isLinux) {
|
|
var file_path_to_use_ = std.mem.trimRight(u8, file_path_, "/");
|
|
var buf: [bun.MAX_PATH_BYTES + 1]u8 = undefined;
|
|
std.mem.copy(u8, &buf, file_path_to_use_);
|
|
buf[file_path_to_use_.len] = 0;
|
|
var slice: [:0]u8 = buf[0..file_path_to_use_.len :0];
|
|
index = try INotify.watchDir(slice);
|
|
}
|
|
|
|
this.watchlist.appendAssumeCapacity(.{
|
|
.file_path = file_path_,
|
|
.fd = fd,
|
|
.hash = hash,
|
|
.count = 0,
|
|
.eventlist_index = index,
|
|
.loader = options.Loader.file,
|
|
.parent_hash = parent_hash,
|
|
.kind = .directory,
|
|
.package_json = null,
|
|
});
|
|
return @truncate(WatchItemIndex, this.watchlist.len - 1);
|
|
}
|
|
|
|
pub inline fn isEligibleDirectory(this: *Watcher, dir: string) bool {
|
|
return strings.indexOf(dir, this.fs.top_level_dir) != null and strings.indexOf(dir, "node_modules") == null;
|
|
}
|
|
|
|
pub fn addDirectory(
|
|
this: *Watcher,
|
|
fd: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
comptime copy_file_path: bool,
|
|
) !void {
|
|
this.mutex.lock();
|
|
defer this.mutex.unlock();
|
|
|
|
if (this.indexOf(hash) != null) {
|
|
return;
|
|
}
|
|
|
|
try this.watchlist.ensureUnusedCapacity(this.allocator, 1);
|
|
|
|
_ = try this.appendDirectoryAssumeCapacity(fd, file_path, hash, copy_file_path);
|
|
}
|
|
|
|
pub fn appendFileMaybeLock(
|
|
this: *Watcher,
|
|
fd: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
loader: options.Loader,
|
|
dir_fd: StoredFileDescriptorType,
|
|
package_json: ?*PackageJSON,
|
|
comptime copy_file_path: bool,
|
|
comptime lock: bool,
|
|
) !void {
|
|
if (comptime lock) this.mutex.lock();
|
|
defer if (comptime lock) this.mutex.unlock();
|
|
std.debug.assert(file_path.len > 1);
|
|
const pathname = Fs.PathName.init(file_path);
|
|
|
|
const parent_dir = pathname.dirWithTrailingSlash();
|
|
var parent_dir_hash: HashType = Watcher.getHash(parent_dir);
|
|
|
|
var parent_watch_item: ?WatchItemIndex = null;
|
|
const autowatch_parent_dir = (comptime FeatureFlags.watch_directories) and this.isEligibleDirectory(parent_dir);
|
|
if (autowatch_parent_dir) {
|
|
var watchlist_slice = this.watchlist.slice();
|
|
|
|
if (dir_fd > 0) {
|
|
var fds = watchlist_slice.items(.fd);
|
|
if (std.mem.indexOfScalar(StoredFileDescriptorType, fds, dir_fd)) |i| {
|
|
parent_watch_item = @truncate(WatchItemIndex, i);
|
|
}
|
|
}
|
|
|
|
if (parent_watch_item == null) {
|
|
const hashes = watchlist_slice.items(.hash);
|
|
if (std.mem.indexOfScalar(HashType, hashes, parent_dir_hash)) |i| {
|
|
parent_watch_item = @truncate(WatchItemIndex, i);
|
|
}
|
|
}
|
|
}
|
|
try this.watchlist.ensureUnusedCapacity(this.allocator, 1 + @intCast(usize, @boolToInt(parent_watch_item == null)));
|
|
|
|
if (autowatch_parent_dir) {
|
|
parent_watch_item = parent_watch_item orelse try this.appendDirectoryAssumeCapacity(dir_fd, parent_dir, parent_dir_hash, copy_file_path);
|
|
}
|
|
|
|
try this.appendFileAssumeCapacity(
|
|
fd,
|
|
file_path,
|
|
hash,
|
|
loader,
|
|
parent_dir_hash,
|
|
package_json,
|
|
copy_file_path,
|
|
);
|
|
|
|
if (comptime FeatureFlags.verbose_watcher) {
|
|
if (strings.indexOf(file_path, this.cwd)) |i| {
|
|
Output.prettyln("<r><d>Added <b>./{s}<r><d> to watch list.<r>", .{file_path[i + this.cwd.len ..]});
|
|
} else {
|
|
Output.prettyln("<r><d>Added <b>{s}<r><d> to watch list.<r>", .{file_path});
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn appendFile(
|
|
this: *Watcher,
|
|
fd: StoredFileDescriptorType,
|
|
file_path: string,
|
|
hash: HashType,
|
|
loader: options.Loader,
|
|
dir_fd: StoredFileDescriptorType,
|
|
package_json: ?*PackageJSON,
|
|
comptime copy_file_path: bool,
|
|
) !void {
|
|
return appendFileMaybeLock(this, fd, file_path, hash, loader, dir_fd, package_json, copy_file_path, true);
|
|
}
|
|
};
|
|
}
|