;;
;; ...again, once we have smarted locks the spinlock here can become
;; a mutex.
- `(sb!thread::call-with-system-spinlock (lambda () ,@body)
- *available-buffers-spinlock*))
+ `(sb!thread::with-system-spinlock (*available-buffers-spinlock*)
+ ,@body))
(defconstant +bytes-per-buffer+ (* 4 1024)
#!+sb-doc
;; pathname of the file this stream is opened to (returned by PATHNAME)
(pathname nil :type (or pathname null))
(external-format :default)
- (output-bytes #'ill-out :type function))
+ ;; fixed width, or function to call with a character
+ (char-size 1 :type (or fixnum function))
+ (output-bytes #'ill-out :type function)
+ ;; a boolean indicating whether the stream is bivalent. For
+ ;; internal use only.
+ (bivalent-p nil :type boolean))
(def!method print-object ((fd-stream fd-stream) stream)
(declare (type stream stream))
(print-unreadable-object (fd-stream stream :type t :identity t)
(defun stream-decoding-error (stream octets)
(error 'stream-decoding-error
+ :external-format (stream-external-format stream)
:stream stream
;; FIXME: dunno how to get at OCTETS currently, or even if
;; that's the right thing to report.
:octets octets))
(defun stream-encoding-error (stream code)
(error 'stream-encoding-error
+ :external-format (stream-external-format stream)
:stream stream
:code code))
(attempt-resync ()
:report (lambda (stream)
(format stream
- "~@<Attempt to resync the stream at a character ~
+ "~@<Attempt to resync the stream at a ~
character boundary and continue.~@:>"))
(fd-stream-resync stream)
nil)
;;; correct on win32. However, none of the places that use it require
;;; further assurance than "may" versus "will definitely not".
(defun sysread-may-block-p (stream)
- #+win32
+ #!+win32
;; This answers T at EOF on win32, I think.
(not (sb!win32:fd-listen (fd-stream-fd stream)))
- #-win32
+ #!-win32
(sb!unix:with-restarted-syscall (count errno)
(sb!alien:with-alien ((read-fds (sb!alien:struct sb!unix:fd-set)))
(sb!unix:fd-zero read-fds)
;;; then fill the input buffer, and return the number of bytes read. Throws
;;; to EOF-INPUT-CATCHER if the eof was reached.
(defun refill-input-buffer (stream)
- (let ((fd (fd-stream-fd stream))
- (errno 0)
- (count 0))
- (declare (dynamic-extent fd errno count))
+ (dx-let ((fd (fd-stream-fd stream))
+ (errno 0)
+ (count 0))
(tagbody
;; Check for blocking input before touching the stream, as if
;; we happen to wait we are liable to be interrupted, and the
(setf (sap-ref-8 sap tail) bits))
(code-char byte))
-(let* ((table (let ((s (make-string 256)))
- (map-into s #'code-char
- '(#x00 #x01 #x02 #x03 #x9c #x09 #x86 #x7f #x97 #x8d #x8e #x0b #x0c #x0d #x0e #x0f
- #x10 #x11 #x12 #x13 #x9d #x85 #x08 #x87 #x18 #x19 #x92 #x8f #x1c #x1d #x1e #x1f
- #x80 #x81 #x82 #x83 #x84 #x0a #x17 #x1b #x88 #x89 #x8a #x8b #x8c #x05 #x06 #x07
- #x90 #x91 #x16 #x93 #x94 #x95 #x96 #x04 #x98 #x99 #x9a #x9b #x14 #x15 #x9e #x1a
- #x20 #xa0 #xe2 #xe4 #xe0 #xe1 #xe3 #xe5 #xe7 #xf1 #xa2 #x2e #x3c #x28 #x2b #x7c
- #x26 #xe9 #xea #xeb #xe8 #xed #xee #xef #xec #xdf #x21 #x24 #x2a #x29 #x3b #xac
- #x2d #x2f #xc2 #xc4 #xc0 #xc1 #xc3 #xc5 #xc7 #xd1 #xa6 #x2c #x25 #x5f #x3e #x3f
- #xf8 #xc9 #xca #xcb #xc8 #xcd #xce #xcf #xcc #x60 #x3a #x23 #x40 #x27 #x3d #x22
- #xd8 #x61 #x62 #x63 #x64 #x65 #x66 #x67 #x68 #x69 #xab #xbb #xf0 #xfd #xfe #xb1
- #xb0 #x6a #x6b #x6c #x6d #x6e #x6f #x70 #x71 #x72 #xaa #xba #xe6 #xb8 #xc6 #xa4
- #xb5 #x7e #x73 #x74 #x75 #x76 #x77 #x78 #x79 #x7a #xa1 #xbf #xd0 #xdd #xde #xae
- #x5e #xa3 #xa5 #xb7 #xa9 #xa7 #xb6 #xbc #xbd #xbe #x5b #x5d #xaf #xa8 #xb4 #xd7
- #x7b #x41 #x42 #x43 #x44 #x45 #x46 #x47 #x48 #x49 #xad #xf4 #xf6 #xf2 #xf3 #xf5
- #x7d #x4a #x4b #x4c #x4d #x4e #x4f #x50 #x51 #x52 #xb9 #xfb #xfc #xf9 #xfa #xff
- #x5c #xf7 #x53 #x54 #x55 #x56 #x57 #x58 #x59 #x5a #xb2 #xd4 #xd6 #xd2 #xd3 #xd5
- #x30 #x31 #x32 #x33 #x34 #x35 #x36 #x37 #x38 #x39 #xb3 #xdb #xdc #xd9 #xda #x9f))
- s))
- (reverse-table (let ((rt (make-array 256 :element-type '(unsigned-byte 8) :initial-element 0)))
- (loop for char across table for i from 0
- do (aver (= 0 (aref rt (char-code char))))
- do (setf (aref rt (char-code char)) i))
- rt)))
- (define-external-format (:ebcdic-us :ibm-037 :ibm037)
- 1 t
- (if (>= bits 256)
- (external-format-encoding-error stream bits)
- (setf (sap-ref-8 sap tail) (aref reverse-table bits)))
- (aref table byte)))
-
-
#!+sb-unicode
(let ((latin-9-table (let ((table (make-string 256)))
(do ((i 0 (1+ i)))
input-type
output-type))))))
-;;; Handles the resource-release aspects of stream closing.
+;;; Handles the resource-release aspects of stream closing, and marks
+;;; it as closed.
(defun release-fd-stream-resources (fd-stream)
(handler-case
(without-interrupts
+ ;; Drop handlers first.
+ (when (fd-stream-handler fd-stream)
+ (remove-fd-handler (fd-stream-handler fd-stream))
+ (setf (fd-stream-handler fd-stream) nil))
;; Disable interrupts so that a asynch unwind will not leave
;; us with a dangling finalizer (that would close the same
- ;; --possibly reassigned-- FD again).
+ ;; --possibly reassigned-- FD again), or a stream with a closed
+ ;; FD that appears open.
(sb!unix:unix-close (fd-stream-fd fd-stream))
+ (set-closed-flame fd-stream)
(when (fboundp 'cancel-finalization)
(cancel-finalization fd-stream)))
;; On error unwind from WITHOUT-INTERRUPTS.
(serious-condition (e)
(error e)))
-
;; Release all buffers. If this is undone, or interrupted,
;; we're still safe: buffers have finalizers of their own.
(release-fd-stream-buffers fd-stream))
(do-listen)))))))
(do-listen)))
(:unread
- (setf (fd-stream-unread fd-stream) arg1)
+ ;; If the stream is bivalent, the user might follow an
+ ;; unread-char with a read-byte. In this case, the bookkeeping
+ ;; is simpler if we adjust the buffer head by the number of code
+ ;; units in the character.
+ ;; FIXME: there has to be a proper way to check for bivalence,
+ ;; right?
+ (if (fd-stream-bivalent-p fd-stream)
+ (decf (buffer-head (fd-stream-ibuf fd-stream))
+ (fd-stream-character-size fd-stream arg1))
+ (setf (fd-stream-unread fd-stream) arg1))
(setf (fd-stream-listen fd-stream) t))
(:close
- (cond (arg1 ; We got us an abort on our hands.
- (when (fd-stream-handler fd-stream)
- (remove-fd-handler (fd-stream-handler fd-stream))
- (setf (fd-stream-handler fd-stream) nil))
- ;; We can't do anything unless we know what file were
- ;; dealing with, and we don't want to do anything
- ;; strange unless we were writing to the file.
- (when (and (fd-stream-file fd-stream) (fd-stream-obuf fd-stream))
- (if (fd-stream-original fd-stream)
- ;; If the original is EQ to file we are appending
- ;; and can just close the file without renaming.
- (unless (eq (fd-stream-original fd-stream)
- (fd-stream-file fd-stream))
- ;; We have a handle on the original, just revert.
+ ;; Drop input buffers
+ (setf (ansi-stream-in-index fd-stream) +ansi-stream-in-buffer-length+
+ (ansi-stream-cin-buffer fd-stream) nil
+ (ansi-stream-in-buffer fd-stream) nil)
+ (cond (arg1
+ ;; We got us an abort on our hands.
+ (let ((outputp (fd-stream-obuf fd-stream))
+ (file (fd-stream-file fd-stream))
+ (orig (fd-stream-original fd-stream)))
+ ;; This takes care of the important stuff -- everything
+ ;; rest is cleaning up the file-system, which we cannot
+ ;; do on some platforms as long as the file is open.
+ (release-fd-stream-resources fd-stream)
+ ;; We can't do anything unless we know what file were
+ ;; dealing with, and we don't want to do anything
+ ;; strange unless we were writing to the file.
+ (when (and outputp file)
+ (if orig
+ ;; If the original is EQ to file we are appending to
+ ;; and can just close the file without renaming.
+ (unless (eq orig file)
+ ;; We have a handle on the original, just revert.
+ (multiple-value-bind (okay err)
+ (sb!unix:unix-rename orig file)
+ ;; FIXME: Why is this a SIMPLE-STREAM-ERROR, and the
+ ;; others are SIMPLE-FILE-ERRORS? Surely they should
+ ;; all be the same?
+ (unless okay
+ (error 'simple-stream-error
+ :format-control
+ "~@<Couldn't restore ~S to its original contents ~
+ from ~S while closing ~S: ~2I~_~A~:>"
+ :format-arguments
+ (list file orig fd-stream (strerror err))
+ :stream fd-stream))))
+ ;; We can't restore the original, and aren't
+ ;; appending, so nuke that puppy.
+ ;;
+ ;; FIXME: This is currently the fate of superseded
+ ;; files, and according to the CLOSE spec this is
+ ;; wrong. However, there seems to be no clean way to
+ ;; do that that doesn't involve either copying the
+ ;; data (bad if the :abort resulted from a full
+ ;; disk), or renaming the old file temporarily
+ ;; (probably bad because stream opening becomes more
+ ;; racy).
(multiple-value-bind (okay err)
- (sb!unix:unix-rename (fd-stream-original fd-stream)
- (fd-stream-file fd-stream))
+ (sb!unix:unix-unlink file)
(unless okay
- (simple-stream-perror
- "couldn't restore ~S to its original contents"
- fd-stream
- err))))
- ;; We can't restore the original, and aren't
- ;; appending, so nuke that puppy.
- ;;
- ;; FIXME: This is currently the fate of superseded
- ;; files, and according to the CLOSE spec this is
- ;; wrong. However, there seems to be no clean way to
- ;; do that that doesn't involve either copying the
- ;; data (bad if the :abort resulted from a full
- ;; disk), or renaming the old file temporarily
- ;; (probably bad because stream opening becomes more
- ;; racy).
- (multiple-value-bind (okay err)
- (sb!unix:unix-unlink (fd-stream-file fd-stream))
- (unless okay
- (error 'simple-file-error
- :pathname (fd-stream-file fd-stream)
- :format-control
- "~@<couldn't remove ~S: ~2I~_~A~:>"
- :format-arguments (list (fd-stream-file fd-stream)
- (strerror err))))))))
+ (error 'simple-file-error
+ :pathname file
+ :format-control
+ "~@<Couldn't remove ~S while closing ~S: ~2I~_~A~:>"
+ :format-arguments
+ (list file fd-stream (strerror err)))))))))
(t
(finish-fd-stream-output fd-stream)
- (when (and (fd-stream-original fd-stream)
- (fd-stream-delete-original fd-stream))
- (multiple-value-bind (okay err)
- (sb!unix:unix-unlink (fd-stream-original fd-stream))
- (unless okay
- (error 'simple-file-error
- :pathname (fd-stream-original fd-stream)
- :format-control
- "~@<couldn't delete ~S during close of ~S: ~
- ~2I~_~A~:>"
- :format-arguments
- (list (fd-stream-original fd-stream)
- fd-stream
- (strerror err))))))))
- (release-fd-stream-resources fd-stream)
- ;; Mark as closed. FIXME: Maybe this should be the first thing done?
- (sb!impl::set-closed-flame fd-stream))
+ (let ((orig (fd-stream-original fd-stream)))
+ (when (and orig (fd-stream-delete-original fd-stream))
+ (multiple-value-bind (okay err) (sb!unix:unix-unlink orig)
+ (unless okay
+ (error 'simple-file-error
+ :pathname orig
+ :format-control
+ "~@<couldn't delete ~S while closing ~S: ~2I~_~A~:>"
+ :format-arguments
+ (list orig fd-stream (strerror err)))))))
+ ;; In case of no-abort close, don't *really* close the
+ ;; stream until the last moment -- the cleaning up of the
+ ;; original can be done first.
+ (release-fd-stream-resources fd-stream))))
(:clear-input
(fd-stream-clear-input fd-stream))
(:force-output
:buffering buffering
:dual-channel-p dual-channel-p
:external-format external-format
+ :bivalent-p (eq element-type :default)
+ :char-size (external-format-char-size external-format)
:timeout
(if timeout
(coerce timeout 'single-float)
;; Calculate useful stuff.
(multiple-value-bind (input output mask)
- (case direction
+ (ecase direction
(:input (values t nil sb!unix:o_rdonly))
(:output (values nil t sb!unix:o_wronly))
(:io (values t t sb!unix:o_rdwr))
(:probe (values t nil sb!unix:o_rdonly)))
(declare (type index mask))
- (let* ((pathname (merge-pathnames filename))
- (namestring
- (cond ((unix-namestring pathname input))
- ((and input (eq if-does-not-exist :create))
- (unix-namestring pathname nil))
- ((and (eq direction :io) (not if-does-not-exist-given))
- (unix-namestring pathname nil)))))
+ (let* (;; PATHNAME is the pathname we associate with the stream.
+ (pathname (merge-pathnames filename))
+ (physical (physicalize-pathname pathname))
+ (truename (probe-file physical))
+ ;; NAMESTRING is the native namestring we open the file with.
+ (namestring (cond (truename
+ (native-namestring truename :as-file t))
+ ((or (not input)
+ (and input (eq if-does-not-exist :create))
+ (and (eq direction :io) (not if-does-not-exist-given)))
+ (native-namestring physical :as-file t)))))
;; Process if-exists argument if we are doing any output.
(cond (output
(unless if-exists-given
(when (and output (= (logand orig-mode #o170000)
#o40000))
(error 'simple-file-error
- :pathname namestring
+ :pathname pathname
:format-control
"can't open ~S for output: is a directory"
:format-arguments (list namestring)))
(cond (new-name
(setf (fd-stream-pathname stream) new-name)
(setf (fd-stream-file stream)
- (unix-namestring new-name nil))
+ (native-namestring (physicalize-pathname new-name)
+ :as-file t))
t)
(t
(fd-stream-pathname stream)))))
projects / sbcl.git / blobdiff