#!+sb-doc
"List of available buffers.")
-(defvar *available-buffers-spinlock* (sb!thread::make-spinlock
- :name "lock for *AVAILABLE-BUFFERS*")
+(defvar *available-buffers-lock* (sb!thread:make-mutex
+ :name "lock for *AVAILABLE-BUFFERS*")
#!+sb-doc
"Mutex for access to *AVAILABLE-BUFFERS*.")
(defmacro with-available-buffers-lock ((&optional) &body body)
- ;; CALL-WITH-SYSTEM-SPINLOCK because
- ;;
- ;; 1. streams are low-level enough to be async signal safe, and in
- ;; particular a C-c that brings up the debugger while holding the
- ;; mutex would lose badly
- ;;
- ;; 2. this can potentially be a fairly busy (but also probably
- ;; uncontended) lock, so we don't want to pay the syscall per
- ;; release -- hence a spinlock.
- ;;
- ;; ...again, once we have smarted locks the spinlock here can become
- ;; a mutex.
- `(sb!thread::with-system-spinlock (*available-buffers-spinlock*)
+ ;; CALL-WITH-SYSTEM-MUTEX because streams are low-level enough to be
+ ;; async signal safe, and in particular a C-c that brings up the
+ ;; debugger while holding the mutex would lose badly.
+ `(sb!thread::with-system-mutex (*available-buffers-lock*)
,@body))
(defconstant +bytes-per-buffer+ (* 4 1024)
(element-type 'base-char)
;; the Unix file descriptor
(fd -1 :type fixnum)
+ ;; What do we know about the FD?
+ (fd-type :unknown :type keyword)
;; controls when the output buffer is flushed
(buffering :full :type (member :full :line :none))
;; controls whether the input buffer must be cleared before output
(return (reset-buffer obuf)))
(count
;; Partial write -- update buffer status and
- ;; queue or wait. Do not use INCF! Another
- ;; thread might have moved head...
- (setf (buffer-head obuf) (+ count head))
+ ;; queue or wait.
+ (incf head count)
+ (setf (buffer-head obuf) head)
(queue-or-wait))
#!-win32
((eql errno sb!unix:ewouldblock)
;;; this is not something we want to export. Nikodemus thinks the
;;; right thing is to support a low-level non-stream like IO layer,
;;; akin to java.nio.
-(defun output-raw-bytes (stream thing &optional start end)
+(declaim (inline output-raw-bytes))
+(define-deprecated-function :late "1.0.8.16" output-raw-bytes write-sequence
+ (stream thing &optional start end)
(write-or-buffer-output stream thing (or start 0) (or end (length thing))))
-
-(define-compiler-macro output-raw-bytes (stream thing &optional start end)
- (deprecation-warning 'output-raw-bytes)
- (let ((x (gensym "THING")))
- `(let ((,x ,thing))
- (write-or-buffer-output ,stream ,x (or ,start 0) (or ,end (length ,x))))))
\f
;;;; output routines and related noise
(error 'c-string-encoding-error
:external-format external-format
:code code))
-
-(defun c-string-decoding-error (external-format octets)
+(defun c-string-decoding-error (external-format sap offset count)
(error 'c-string-decoding-error
:external-format external-format
- :octets octets))
+ :octets (sap-ref-octets sap offset count)))
;;; Returning true goes into end of file handling, false will enter another
;;; round of input buffer filling followed by re-entering character decode.
(count 0))
(tagbody
;; Check for blocking input before touching the stream if we are to
- ;; serve events: if the FD is blocking, we don't want to hang on the
- ;; write if we are to serve events or notice timeouts.
- (if (and (or (fd-stream-serve-events stream)
- (fd-stream-timeout stream)
- *deadline*)
+ ;; serve events: if the FD is blocking, we don't want to try an uninterruptible
+ ;; read(). Regular files should never block, so we can elide the check.
+ (if (and (neq :regular (fd-stream-fd-type stream))
(sysread-may-block-p stream))
(go :wait-for-input)
(go :main))
(incf head size)
nil))
(when decode-break-reason
- (c-string-decoding-error ,name decode-break-reason))
+ (c-string-decoding-error
+ ,name sap head decode-break-reason))
(when (zerop (char-code char))
(return count))))
(string (make-string length :element-type element-type)))
(incf head size)
nil))
(when decode-break-reason
- (c-string-decoding-error ,name decode-break-reason))
+ (c-string-decoding-error
+ ,name sap head decode-break-reason))
(setf (aref string index) char)))))
(defun ,output-c-string-function (string)
((not (or input output))
(error "File descriptor must be opened either for input or output.")))
(let ((stream (%make-fd-stream :fd fd
+ :fd-type (progn
+ #!-win32 (sb!unix:fd-type fd)
+ ;; KLUDGE.
+ #!+win32 (if serve-events
+ :unknown
+ :regular))
:name name
:file file
:original original
(cond ((numberp fd)
(case direction
((:input :output :io)
+ ;; For O_APPEND opened files, lseek returns 0 until first write.
+ ;; So we jump ahead here.
+ (when (eq if-exists :append)
+ (sb!unix:unix-lseek fd 0 sb!unix:l_xtnd))
(make-fd-stream fd
:input input
:output output
projects / sbcl.git / blobdiff