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std.Build.Watch: limit to one switch on os tag

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This commit is contained in:
Andrew Kelley 2024-10-24 16:29:02 -07:00
parent 7a46ba73ce
commit 8819d8b061
1 changed files with 61 additions and 62 deletions
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123
lib/std/Build/Watch.zig
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@ -91,6 +91,38 @@ const Os = switch (builtin.os.tag) {
};
};
fn init() !Watch {
const fan_fd = std.posix.fanotify_init(.{
.CLASS = .NOTIF,
.CLOEXEC = true,
.NONBLOCK = true,
.REPORT_NAME = true,
.REPORT_DIR_FID = true,
.REPORT_FID = true,
.REPORT_TARGET_FID = true,
}, 0) catch |err| switch (err) {
error.UnsupportedFlags => fatal("fanotify_init failed due to old kernel; requires 5.17+", .{}),
else => |e| return e,
};
return .{
.dir_table = .{},
.os = switch (builtin.os.tag) {
.linux => .{
.handle_table = .{},
.poll_fds = .{
.{
.fd = fan_fd,
.events = std.posix.POLL.IN,
.revents = undefined,
},
},
},
else => {},
},
.generation = 0,
};
}
fn getDirHandle(gpa: Allocator, path: std.Build.Cache.Path) !FileHandle {
var file_handle_buffer: [@sizeOf(std.os.linux.file_handle) + 128]u8 align(@alignOf(std.os.linux.file_handle)) = undefined;
var mount_id: i32 = undefined;
@ -368,6 +400,21 @@ const Os = switch (builtin.os.tag) {
}
};
fn init() !Watch {
return .{
.dir_table = .{},
.os = switch (builtin.os.tag) {
.windows => .{
.handle_table = .{},
.dir_list = .{},
.io_cp = null,
},
else => {},
},
.generation = 0,
};
}
fn getFileId(handle: windows.HANDLE) !FileId {
var file_id: FileId = undefined;
var io_status: windows.IO_STATUS_BLOCK = undefined;
@ -572,6 +619,19 @@ const Os = switch (builtin.os.tag) {
break :f f;
};
fn init() !Watch {
const kq_fd = try posix.kqueue();
errdefer posix.close(kq_fd);
return .{
.dir_table = .{},
.os = .{
.kq_fd = kq_fd,
.reaction_sets = .{},
},
.generation = 0,
};
}
fn update(w: *Watch, gpa: Allocator, steps: []const *Step) !void {
for (steps) |step| {
for (step.inputs.table.keys(), step.inputs.table.values()) |path, *files| {
@ -702,68 +762,7 @@ const Os = switch (builtin.os.tag) {
};
pub fn init() !Watch {
switch (builtin.os.tag) {
.linux => {
const fan_fd = std.posix.fanotify_init(.{
.CLASS = .NOTIF,
.CLOEXEC = true,
.NONBLOCK = true,
.REPORT_NAME = true,
.REPORT_DIR_FID = true,
.REPORT_FID = true,
.REPORT_TARGET_FID = true,
}, 0) catch |err| switch (err) {
error.UnsupportedFlags => fatal("fanotify_init failed due to old kernel; requires 5.17+", .{}),
else => |e| return e,
};
return .{
.dir_table = .{},
.os = switch (builtin.os.tag) {
.linux => .{
.handle_table = .{},
.poll_fds = .{
.{
.fd = fan_fd,
.events = std.posix.POLL.IN,
.revents = undefined,
},
},
},
else => {},
},
.generation = 0,
};
},
.windows => {
return .{
.dir_table = .{},
.os = switch (builtin.os.tag) {
.windows => .{
.handle_table = .{},
.dir_list = .{},
.io_cp = null,
},
else => {},
},
.generation = 0,
};
},
.dragonfly, .freebsd, .netbsd, .openbsd, .ios, .macos, .tvos, .visionos, .watchos => {
const posix = std.posix;
const kq_fd = try posix.kqueue();
errdefer posix.close(kq_fd);
return .{
.dir_table = .{},
.os = .{
.kq_fd = kq_fd,
.reaction_sets = .{},
},
.generation = 0,
};
},
else => @panic("unimplemented"),
}
return Os.init();
}
pub const Match = struct {