(defmacro def-enum (inc cur &rest names)
(flet ((defform (name)
- (prog1 (when name `(defconstant ,name ,cur))
- (setf cur (funcall inc cur 1)))))
+ (prog1 (when name `(defconstant ,name ,cur))
+ (setf cur (funcall inc cur 1)))))
`(progn ,@(mapcar #'defform names))))
;;; Given a C-level zero-terminated array of C strings, return a
(dotimes (i most-positive-fixnum (error "argh! can't happen"))
(declare (type index i))
(let ((c-string (deref c-strings i)))
- (if c-string
+ (if c-string
(push c-string reversed-result)
- (return (nreverse reversed-result)))))))
+ (return (nreverse reversed-result)))))))
\f
;;;; Lisp types used by syscalls
-(deftype unix-pathname () 'simple-base-string)
+(deftype unix-pathname () 'simple-string)
(deftype unix-fd () `(integer 0 ,most-positive-fixnum))
(deftype unix-file-mode () '(unsigned-byte 32))
;;; implemented using SB!XC:DEFMACRO wrapped in EVAL-WHEN.
(defmacro syscall ((name &rest arg-types) success-form &rest args)
- `(let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
- ,@args)))
- (if (minusp result)
- (values nil (get-errno))
- ,success-form)))
+ `(locally
+ (declare (optimize (sb!c::float-accuracy 0)))
+ (let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
+ ,@args)))
+ (if (minusp result)
+ (values nil (get-errno))
+ ,success-form))))
;;; This is like SYSCALL, but if it fails, signal an error instead of
;;; returning error codes. Should only be used for syscalls that will
;;; never really get an error.
(defmacro syscall* ((name &rest arg-types) success-form &rest args)
- `(let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
- ,@args)))
- (if (minusp result)
- (error "Syscall ~A failed: ~A" ,name (strerror))
- ,success-form)))
+ `(locally
+ (declare (optimize (sb!c::float-accuracy 0)))
+ (let ((result (alien-funcall (extern-alien ,name (function int ,@arg-types))
+ ,@args)))
+ (if (minusp result)
+ (error "Syscall ~A failed: ~A" ,name (strerror))
+ ,success-form))))
(/show0 "unix.lisp 109")
(defmacro int-syscall ((name &rest arg-types) &rest args)
`(syscall (,name ,@arg-types) (values result 0) ,@args))
+
+(defmacro with-restarted-syscall ((&optional (value (gensym))
+ (errno (gensym)))
+ syscall-form &rest body)
+ #!+sb-doc
+ "Evaluate BODY with VALUE and ERRNO bound to the return values of
+SYSCALL-FORM. Repeat evaluation of SYSCALL-FORM if it is interrupted."
+ `(let (,value ,errno)
+ (loop (multiple-value-setq (,value ,errno)
+ ,syscall-form)
+ (unless #!-win32 (eql ,errno sb!unix:eintr) #!+win32 nil
+ (return (values ,value ,errno))))
+ ,@body))
+
+#!+win32
+(progn
+ (defconstant espipe 29)
+ ;; For stat-wrapper hack (different-type or non-existing win32 fields).
+ (define-alien-type nlink-t short)
+ (define-alien-type uid-t short)
+ (define-alien-type gid-t short))
\f
;;;; hacking the Unix environment
+#!-win32
(define-alien-routine ("getenv" posix-getenv) c-string
"Return the \"value\" part of the environment string \"name=value\" which
corresponds to NAME, or NIL if there is none."
;;; Rename the file with string NAME1 to the string NAME2. NIL and an
;;; error code is returned if an error occurs.
+#!-win32
(defun unix-rename (name1 name2)
(declare (type unix-pathname name1 name2))
(void-syscall ("rename" c-string c-string) name1 name2))
(define-alien-type nil
(struct fd-set
- (fds-bits (array fd-mask #.(/ fd-setsize 32)))))
+ (fds-bits (array fd-mask #.(/ fd-setsize
+ sb!vm:n-machine-word-bits)))))
(/show0 "unix.lisp 304")
\f
\f
;;;; fcntl.h
;;;;
-;;;; POSIX Standard: 6.5 File Control Operations <fcntl.h>
+;;;; POSIX Standard: 6.5 File Control Operations <fcntl.h>
;;; Open the file whose pathname is specified by PATH for reading
;;; and/or writing as specified by the FLAGS argument. Various FLAGS
;;; file descriptor is returned by UNIX-OPEN.
(defun unix-open (path flags mode)
(declare (type unix-pathname path)
- (type fixnum flags)
- (type unix-file-mode mode))
- (int-syscall ("open" c-string int int) path flags mode))
+ (type fixnum flags)
+ (type unix-file-mode mode))
+ (int-syscall ("open" c-string int int)
+ path
+ (logior #!+win32 o_binary
+ #!+largefile o_largefile
+ flags)
+ mode))
;;; UNIX-CLOSE accepts a file descriptor and attempts to close the file
;;; associated with it.
;; A time value that is accurate to the nearest
;; microsecond but also has a range of years.
+;; CLH: Note that tv-usec used to be a time-t, but that this seems
+;; problematic on Darwin x86-64 (and wrong). Trying suseconds-t.
+#!-win32
+(define-alien-type nil
+ (struct timeval
+ (tv-sec time-t) ; seconds
+ (tv-usec suseconds-t))) ; and microseconds
+
+#!+win32
(define-alien-type nil
- (struct timeval
- (tv-sec time-t) ; seconds
- (tv-usec time-t))) ; and microseconds
+ (struct timeval
+ (tv-sec time-t) ; seconds
+ (tv-usec long))) ; and microseconds
\f
;;;; resourcebits.h
(define-alien-type nil
(struct rusage
- (ru-utime (struct timeval)) ; user time used
- (ru-stime (struct timeval)) ; system time used.
- (ru-maxrss long) ; maximum resident set size (in kilobytes)
- (ru-ixrss long) ; integral shared memory size
- (ru-idrss long) ; integral unshared data size
- (ru-isrss long) ; integral unshared stack size
- (ru-minflt long) ; page reclaims
- (ru-majflt long) ; page faults
- (ru-nswap long) ; swaps
- (ru-inblock long) ; block input operations
- (ru-oublock long) ; block output operations
- (ru-msgsnd long) ; messages sent
- (ru-msgrcv long) ; messages received
- (ru-nsignals long) ; signals received
- (ru-nvcsw long) ; voluntary context switches
- (ru-nivcsw long))) ; involuntary context switches
+ (ru-utime (struct timeval)) ; user time used
+ (ru-stime (struct timeval)) ; system time used.
+ (ru-maxrss long) ; maximum resident set size (in kilobytes)
+ (ru-ixrss long) ; integral shared memory size
+ (ru-idrss long) ; integral unshared data size
+ (ru-isrss long) ; integral unshared stack size
+ (ru-minflt long) ; page reclaims
+ (ru-majflt long) ; page faults
+ (ru-nswap long) ; swaps
+ (ru-inblock long) ; block input operations
+ (ru-oublock long) ; block output operations
+ (ru-msgsnd long) ; messages sent
+ (ru-msgrcv long) ; messages received
+ (ru-nsignals long) ; signals received
+ (ru-nvcsw long) ; voluntary context switches
+ (ru-nivcsw long))) ; involuntary context switches
\f
;;;; unistd.h
;;; return T if the file is accessible with that mode and NIL if not.
;;; When NIL, also return an errno value with NIL which tells why the
;;; file was not accessible.
-;;;
+;;;
;;; The access modes are:
;;; r_ok Read permission.
;;; w_ok Write permission.
;;; x_ok Execute permission.
;;; f_ok Presence of file.
+
+;;; In Windows, the MODE argument to access is defined in terms of
+;;; literal magic numbers---there are no constants to grovel. X_OK
+;;; is not defined.
+#!+win32
+(progn
+ (defconstant f_ok 0)
+ (defconstant w_ok 2)
+ (defconstant r_ok 4))
+
(defun unix-access (path mode)
(declare (type unix-pathname path)
- (type (mod 8) mode))
+ (type (mod 8) mode))
(void-syscall ("access" c-string int) path mode))
;;; values for the second argument to UNIX-LSEEK
(declare (type unix-fd fd))
(int-syscall ("isatty" int) fd))
-;;; Accept a file descriptor and move the file pointer ahead
-;;; a certain offset for that file. WHENCE can be any of the following:
-;;; L_SET Set the file pointer.
-;;; L_INCR Increment the file pointer.
-;;; L_XTND Extend the file size.
(defun unix-lseek (fd offset whence)
+ "Unix-lseek accepts a file descriptor and moves the file pointer by
+ OFFSET octets. Whence can be any of the following:
+
+ L_SET Set the file pointer.
+ L_INCR Increment the file pointer.
+ L_XTND Extend the file size.
+ "
(declare (type unix-fd fd)
- (type (unsigned-byte 32) offset)
- (type (integer 0 2) whence))
- #!-(and x86 bsd)
- (int-syscall ("lseek" int off-t int) fd offset whence)
- ;; Need a 64-bit return value type for this. TBD. For now,
- ;; don't use this with any 2G+ partitions.
- #!+(and x86 bsd)
- (int-syscall ("lseek" int unsigned-long unsigned-long int)
- fd offset 0 whence))
+ (type (integer 0 2) whence))
+ (let ((result (alien-funcall (extern-alien #!-largefile "lseek"
+ #!+largefile "lseek_largefile"
+ (function off-t int off-t int))
+ fd offset whence)))
+ (if (minusp result )
+ (values nil (get-errno))
+ (values result 0))))
;;; UNIX-READ accepts a file descriptor, a buffer, and the length to read.
;;; It attempts to read len bytes from the device associated with fd
;;; bytes read.
(defun unix-read (fd buf len)
(declare (type unix-fd fd)
- (type (unsigned-byte 32) len))
+ (type (unsigned-byte 32) len))
(int-syscall ("read" int (* char) int) fd buf len))
;;; UNIX-WRITE accepts a file descriptor, a buffer, an offset, and the
;;; length to write. It attempts to write len bytes to the device
-;;; associated with fd from the the buffer starting at offset. It returns
+;;; associated with fd from the buffer starting at offset. It returns
;;; the actual number of bytes written.
(defun unix-write (fd buf offset len)
(declare (type unix-fd fd)
- (type (unsigned-byte 32) offset len))
+ (type (unsigned-byte 32) offset len))
(int-syscall ("write" int (* char) int)
- fd
- (with-alien ((ptr (* char) (etypecase buf
- ((simple-array * (*))
- (vector-sap buf))
- (system-area-pointer
- buf))))
- (addr (deref ptr offset)))
- len))
+ fd
+ (with-alien ((ptr (* char) (etypecase buf
+ ((simple-array * (*))
+ (vector-sap buf))
+ (system-area-pointer
+ buf))))
+ (addr (deref ptr offset)))
+ len))
;;; Set up a unix-piping mechanism consisting of an input pipe and an
;;; output pipe. Return two values: if no error occurred the first
;;; value is the pipe to be read from and the second is can be written
;;; to. If an error occurred the first value is NIL and the second the
;;; unix error code.
+#!-win32
(defun unix-pipe ()
(with-alien ((fds (array int 2)))
(syscall ("pipe" (* int))
- (values (deref fds 0) (deref fds 1))
- (cast fds (* int)))))
+ (values (deref fds 0) (deref fds 1))
+ (cast fds (* int)))))
+#!+win32
+(defun msvcrt-raw-pipe (fds size mode)
+ (syscall ("_pipe" (* int) int int)
+ (values (deref fds 0) (deref fds 1))
+ (cast fds (* int)) size mode))
+#!+win32
+(defun unix-pipe ()
+ (with-alien ((fds (array int 2)))
+ (msvcrt-raw-pipe fds 256 o_binary)))
+;; Windows mkdir() doesn't take the mode argument. It's cdecl, so we could
+;; actually call it passing the mode argument, but some sharp-eyed reader
+;; would put five and twenty-seven together and ask us about it, so...
+;; -- AB, 2005-12-27
+#!-win32
(defun unix-mkdir (name mode)
(declare (type unix-pathname name)
- (type unix-file-mode mode))
- (void-syscall ("mkdir" c-string int) name mode))
+ (type unix-file-mode mode)
+ #!+win32 (ignore mode))
+ (void-syscall ("mkdir" c-string #!-win32 int) name #!-win32 mode))
;;; Given a C char* pointer allocated by malloc(), free it and return a
;;; corresponding Lisp string (or return NIL if the pointer is a C NULL).
(if (null-alien newcharstar)
nil
(prog1
- (cast newcharstar c-string)
- (free-alien newcharstar))))
+ (cast newcharstar c-string)
+ (free-alien newcharstar))))
;;; Return the Unix current directory as a SIMPLE-STRING, in the
-;;; style returned by getcwd() (no trailing slash character).
+;;; style returned by getcwd() (no trailing slash character).
+#!-win32
(defun posix-getcwd ()
;; This implementation relies on a BSD/Linux extension to getcwd()
;; behavior, automatically allocating memory when a null buffer
;; a constant. Going the grovel_headers route doesn't seem to be
;; helpful, either, as Solaris doesn't export PATH_MAX from
;; unistd.h.
- #!-(or linux openbsd freebsd sunos osf1) (,stub,)
- #!+(or linux openbsd freebsd sunos osf1)
+ ;;
+ ;; FIXME: The (,stub,) nastiness produces an error message about a
+ ;; comma not inside a backquote. This error has absolutely nothing
+ ;; to do with the actual meaning of the error (and little to do with
+ ;; its location, either).
+ #!-(or linux openbsd freebsd netbsd sunos osf1 darwin win32) (,stub,)
+ #!+(or linux openbsd freebsd netbsd sunos osf1 darwin win32)
(or (newcharstar-string (alien-funcall (extern-alien "getcwd"
- (function (* char)
- (* char)
- size-t))
- nil
- #!+(or linux openbsd freebsd) 0
- #!+(or sunos osf1) 1025))
+ (function (* char)
+ (* char)
+ size-t))
+ nil
+ #!+(or linux openbsd freebsd netbsd darwin win32) 0
+ #!+(or sunos osf1) 1025))
(simple-perror "getcwd")))
;;; Return the Unix current directory as a SIMPLE-STRING terminated
(defun posix-getcwd/ ()
(concatenate 'string (posix-getcwd) "/"))
-;;; Convert at the UNIX level from a possibly relative filename to
-;;; an absolute filename.
-;;;
-;;; FIXME: Do we still need this even as we switch to
-;;; *DEFAULT-PATHNAME-DEFAULTS*? I think maybe we do, since it seems
-;;; to be valid for the user to set *DEFAULT-PATHNAME-DEFAULTS* to
-;;; have a NIL directory component, and then this'd be the only way to
-;;; interpret a relative directory specification. But I don't find the
-;;; ANSI pathname documentation to be a model of clarity. Maybe
-;;; someone who understands it better can take a look at this.. -- WHN
-(defun unix-maybe-prepend-current-directory (name)
- (declare (simple-string name))
- (if (and (> (length name) 0) (char= (schar name 0) #\/))
- name
- (concatenate 'simple-string (posix-getcwd/) name)))
-
;;; Duplicate an existing file descriptor (given as the argument) and
;;; return it. If FD is not a valid file descriptor, NIL and an error
;;; number are returned.
(define-alien-routine ("getpid" unix-getpid) int)
;;; Return the real user id associated with the current process.
+#!-win32
(define-alien-routine ("getuid" unix-getuid) int)
;;; Translate a user id into a login name.
+#!-win32
(defun uid-username (uid)
(or (newcharstar-string (alien-funcall (extern-alien "uid_username"
- (function (* char) int))
- uid))
+ (function (* char) int))
+ uid))
(error "found no match for Unix uid=~S" uid)))
;;; Return the namestring of the home directory, being careful to
;;; include a trailing #\/
+#!-win32
(defun uid-homedir (uid)
(or (newcharstar-string (alien-funcall (extern-alien "uid_homedir"
- (function (* char) int))
- uid))
+ (function (* char) int))
+ uid))
(error "failed to resolve home directory for Unix uid=~S" uid)))
;;; Invoke readlink(2) on the file name specified by PATH. Return
;;; (VALUES LINKSTRING NIL) on success, or (VALUES NIL ERRNO) on
;;; failure.
+#!-win32
(defun unix-readlink (path)
(declare (type unix-pathname path))
(with-alien ((ptr (* char)
- (alien-funcall (extern-alien
- "wrapped_readlink"
- (function (* char) c-string))
- path)))
+ (alien-funcall (extern-alien
+ "wrapped_readlink"
+ (function (* char) c-string))
+ path)))
(if (null-alien ptr)
- (values nil (get-errno))
- (multiple-value-prog1
- (values (with-alien ((c-string c-string ptr)) c-string)
- nil)
- (free-alien ptr)))))
+ (values nil (get-errno))
+ (multiple-value-prog1
+ (values (with-alien ((c-string c-string ptr)) c-string)
+ nil)
+ (free-alien ptr)))))
+#!+win32
+;; Win32 doesn't do links, but something likes to call this anyway.
+;; Something in this file, no less. But it only takes one result, so...
+(defun unix-readlink (path)
+ (declare (ignore path))
+ nil)
;;; UNIX-UNLINK accepts a name and deletes the directory entry for that
-;;; name and the file if this is the last link.
+;;; name and the file if this is the last link.
(defun unix-unlink (name)
(declare (type unix-pathname name))
(void-syscall ("unlink" c-string) name))
;;; Return the name of the host machine as a string.
+#!-win32
(defun unix-gethostname ()
(with-alien ((buf (array char 256)))
(syscall ("gethostname" (* char) int)
- (cast buf c-string)
- (cast buf (* char)) 256)))
-
-;;; Write the core image of the file described by FD to disk.
-(defun unix-fsync (fd)
- (declare (type unix-fd fd))
- (void-syscall ("fsync" int) fd))
-\f
+ (cast buf c-string)
+ (cast buf (* char)) 256)))
+#!-win32
(defun unix-setsid ()
(int-syscall ("setsid")))
;;; UNIX-IOCTL performs a variety of operations on open i/o
;;; descriptors. See the UNIX Programmer's Manual for more
;;; information.
+#!-win32
(defun unix-ioctl (fd cmd arg)
(declare (type unix-fd fd)
- (type (unsigned-byte 32) cmd))
- (void-syscall ("ioctl" int unsigned-int (* char)) fd cmd arg))
+ (type (signed-byte 32) cmd))
+ (void-syscall ("ioctl" int int (* char)) fd cmd arg))
\f
;;;; sys/resource.h
;;; user time, and returns the seconds and microseconds as separate
;;; values.
#!-sb-fluid (declaim (inline unix-fast-getrusage))
+#!-win32
(defun unix-fast-getrusage (who)
(declare (values (member t)
- (unsigned-byte 31) (integer 0 1000000)
- (unsigned-byte 31) (integer 0 1000000)))
+ (unsigned-byte 31) (integer 0 1000000)
+ (unsigned-byte 31) (integer 0 1000000)))
(with-alien ((usage (struct rusage)))
(syscall* ("getrusage" int (* (struct rusage)))
- (values t
- (slot (slot usage 'ru-utime) 'tv-sec)
- (slot (slot usage 'ru-utime) 'tv-usec)
- (slot (slot usage 'ru-stime) 'tv-sec)
- (slot (slot usage 'ru-stime) 'tv-usec))
- who (addr usage))))
+ (values t
+ (slot (slot usage 'ru-utime) 'tv-sec)
+ (slot (slot usage 'ru-utime) 'tv-usec)
+ (slot (slot usage 'ru-stime) 'tv-sec)
+ (slot (slot usage 'ru-stime) 'tv-usec))
+ who (addr usage))))
;;; Return information about the resource usage of the process
;;; specified by WHO. WHO can be either the current process
;;; (rusage_self) or all of the terminated child processes
;;; (rusage_children). NIL and an error number is returned if the call
;;; fails.
+#!-win32
(defun unix-getrusage (who)
(with-alien ((usage (struct rusage)))
(syscall ("getrusage" int (* (struct rusage)))
- (values t
- (+ (* (slot (slot usage 'ru-utime) 'tv-sec) 1000000)
- (slot (slot usage 'ru-utime) 'tv-usec))
- (+ (* (slot (slot usage 'ru-stime) 'tv-sec) 1000000)
- (slot (slot usage 'ru-stime) 'tv-usec))
- (slot usage 'ru-maxrss)
- (slot usage 'ru-ixrss)
- (slot usage 'ru-idrss)
- (slot usage 'ru-isrss)
- (slot usage 'ru-minflt)
- (slot usage 'ru-majflt)
- (slot usage 'ru-nswap)
- (slot usage 'ru-inblock)
- (slot usage 'ru-oublock)
- (slot usage 'ru-msgsnd)
- (slot usage 'ru-msgrcv)
- (slot usage 'ru-nsignals)
- (slot usage 'ru-nvcsw)
- (slot usage 'ru-nivcsw))
- who (addr usage))))
+ (values t
+ (+ (* (slot (slot usage 'ru-utime) 'tv-sec) 1000000)
+ (slot (slot usage 'ru-utime) 'tv-usec))
+ (+ (* (slot (slot usage 'ru-stime) 'tv-sec) 1000000)
+ (slot (slot usage 'ru-stime) 'tv-usec))
+ (slot usage 'ru-maxrss)
+ (slot usage 'ru-ixrss)
+ (slot usage 'ru-idrss)
+ (slot usage 'ru-isrss)
+ (slot usage 'ru-minflt)
+ (slot usage 'ru-majflt)
+ (slot usage 'ru-nswap)
+ (slot usage 'ru-inblock)
+ (slot usage 'ru-oublock)
+ (slot usage 'ru-msgsnd)
+ (slot usage 'ru-msgrcv)
+ (slot usage 'ru-nsignals)
+ (slot usage 'ru-nvcsw)
+ (slot usage 'ru-nivcsw))
+ who (addr usage))))
\f
;;;; sys/select.h
;;; Perform the UNIX select(2) system call.
(declaim (inline unix-fast-select)) ; (used to be a macro in CMU CL)
(defun unix-fast-select (num-descriptors
- read-fds write-fds exception-fds
- timeout-secs &optional (timeout-usecs 0))
+ read-fds write-fds exception-fds
+ timeout-secs &optional (timeout-usecs 0))
(declare (type (integer 0 #.fd-setsize) num-descriptors)
- (type (or (alien (* (struct fd-set))) null)
- read-fds write-fds exception-fds)
- (type (or null (unsigned-byte 31)) timeout-secs)
- (type (unsigned-byte 31) timeout-usecs))
+ (type (or (alien (* (struct fd-set))) null)
+ read-fds write-fds exception-fds)
+ (type (or null (unsigned-byte 31)) timeout-secs)
+ (type (unsigned-byte 31) timeout-usecs))
;; FIXME: CMU CL had
;; (declare (optimize (speed 3) (safety 0) (inhibit-warnings 3)))
;; here. Is that important for SBCL? If so, why? Profiling might tell us..
(setf (slot tv 'tv-sec) timeout-secs)
(setf (slot tv 'tv-usec) timeout-usecs))
(int-syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
- (* (struct fd-set)) (* (struct timeval)))
- num-descriptors read-fds write-fds exception-fds
- (if timeout-secs (alien-sap (addr tv)) (int-sap 0)))))
+ (* (struct fd-set)) (* (struct timeval)))
+ num-descriptors read-fds write-fds exception-fds
+ (if timeout-secs (alien-sap (addr tv)) (int-sap 0)))))
;;; UNIX-SELECT accepts sets of file descriptors and waits for an event
;;; to happen on one of them or to time out.
(defmacro num-to-fd-set (fdset num)
`(if (fixnump ,num)
(progn
- (setf (deref (slot ,fdset 'fds-bits) 0) ,num)
- ,@(loop for index upfrom 1 below (/ fd-setsize 32)
- collect `(setf (deref (slot ,fdset 'fds-bits) ,index) 0)))
+ (setf (deref (slot ,fdset 'fds-bits) 0) ,num)
+ ,@(loop for index upfrom 1 below (/ fd-setsize
+ sb!vm:n-machine-word-bits)
+ collect `(setf (deref (slot ,fdset 'fds-bits) ,index) 0)))
(progn
- ,@(loop for index upfrom 0 below (/ fd-setsize 32)
- collect `(setf (deref (slot ,fdset 'fds-bits) ,index)
- (ldb (byte 32 ,(* index 32)) ,num))))))
+ ,@(loop for index upfrom 0 below (/ fd-setsize
+ sb!vm:n-machine-word-bits)
+ collect `(setf (deref (slot ,fdset 'fds-bits) ,index)
+ (ldb (byte sb!vm:n-machine-word-bits
+ ,(* index sb!vm:n-machine-word-bits))
+ ,num))))))
(defmacro fd-set-to-num (nfds fdset)
- `(if (<= ,nfds 32)
+ `(if (<= ,nfds sb!vm:n-machine-word-bits)
(deref (slot ,fdset 'fds-bits) 0)
- (+ ,@(loop for index upfrom 0 below (/ fd-setsize 32)
- collect `(ash (deref (slot ,fdset 'fds-bits) ,index)
- ,(* index 32))))))
+ (+ ,@(loop for index upfrom 0 below (/ fd-setsize
+ sb!vm:n-machine-word-bits)
+ collect `(ash (deref (slot ,fdset 'fds-bits) ,index)
+ ,(* index sb!vm:n-machine-word-bits))))))
;;; Examine the sets of descriptors passed as arguments to see whether
;;; they are ready for reading and writing. See the UNIX Programmer's
;;; Manual for more information.
(defun unix-select (nfds rdfds wrfds xpfds to-secs &optional (to-usecs 0))
- (declare (type (integer 0 #.FD-SETSIZE) nfds)
- (type unsigned-byte rdfds wrfds xpfds)
- (type (or (unsigned-byte 31) null) to-secs)
- (type (unsigned-byte 31) to-usecs)
- (optimize (speed 3) (safety 0) (inhibit-warnings 3)))
+ (declare (type (integer 0 #.fd-setsize) nfds)
+ (type unsigned-byte rdfds wrfds xpfds)
+ (type (or (unsigned-byte 31) null) to-secs)
+ (type (unsigned-byte 31) to-usecs)
+ (optimize (speed 3) (safety 0) (inhibit-warnings 3)))
(with-alien ((tv (struct timeval))
- (rdf (struct fd-set))
- (wrf (struct fd-set))
- (xpf (struct fd-set)))
+ (rdf (struct fd-set))
+ (wrf (struct fd-set))
+ (xpf (struct fd-set)))
(when to-secs
(setf (slot tv 'tv-sec) to-secs)
(setf (slot tv 'tv-usec) to-usecs))
(num-to-fd-set wrf wrfds)
(num-to-fd-set xpf xpfds)
(macrolet ((frob (lispvar alienvar)
- `(if (zerop ,lispvar)
- (int-sap 0)
- (alien-sap (addr ,alienvar)))))
+ `(if (zerop ,lispvar)
+ (int-sap 0)
+ (alien-sap (addr ,alienvar)))))
(syscall ("select" int (* (struct fd-set)) (* (struct fd-set))
- (* (struct fd-set)) (* (struct timeval)))
- (values result
- (fd-set-to-num nfds rdf)
- (fd-set-to-num nfds wrf)
- (fd-set-to-num nfds xpf))
- nfds (frob rdfds rdf) (frob wrfds wrf) (frob xpfds xpf)
- (if to-secs (alien-sap (addr tv)) (int-sap 0))))))
+ (* (struct fd-set)) (* (struct timeval)))
+ (values result
+ (fd-set-to-num nfds rdf)
+ (fd-set-to-num nfds wrf)
+ (fd-set-to-num nfds xpf))
+ nfds (frob rdfds rdf) (frob wrfds wrf) (frob xpfds xpf)
+ (if to-secs (alien-sap (addr tv)) (int-sap 0))))))
\f
;;;; sys/stat.h
;;; synthesize a nice consistent structure for us.
;;;
;;; Note that st-dev is a long, not a dev-t. This is because dev-t on
-;;; linux 32 bit archs is a 64 bit quantity, but alien doesn's support
+;;; linux 32 bit archs is a 64 bit quantity, but alien doesn't support
;;; those. We don't actually access that field anywhere, though, so
;;; until we can get 64 bit alien support it'll do. Also note that
;;; st_size is a long, not an off-t, because off-t is a 64-bit
;;; longer than 32 bits anyway, right?":-|
(define-alien-type nil
(struct wrapped_stat
- (st-dev unsigned-long) ; would be dev-t in a real stat
+ (st-dev #!-(or mips largefile) unsigned-int
+ #!+mips unsigned-long
+ #!+largefile dev-t)
(st-ino ino-t)
(st-mode mode-t)
- (st-nlink nlink-t)
- (st-uid uid-t)
- (st-gid gid-t)
- (st-rdev unsigned-long) ; would be dev-t in a real stat
- (st-size unsigned-long) ; would be off-t in a real stat
+ (st-nlink nlink-t)
+ (st-uid uid-t)
+ (st-gid gid-t)
+ (st-rdev #!-(or mips largefile) unsigned-int
+ #!+mips unsigned-long
+ #!+largefile dev-t)
+ (st-size #!-(or mips largefile) unsigned-int
+ #!+(or mips largefile) off-t)
(st-blksize unsigned-long)
(st-blocks unsigned-long)
(st-atime time-t)
(defun %extract-stat-results (wrapped-stat)
(declare (type (alien (* (struct wrapped_stat))) wrapped-stat))
(values t
- (slot wrapped-stat 'st-dev)
- (slot wrapped-stat 'st-ino)
- (slot wrapped-stat 'st-mode)
- (slot wrapped-stat 'st-nlink)
- (slot wrapped-stat 'st-uid)
- (slot wrapped-stat 'st-gid)
- (slot wrapped-stat 'st-rdev)
- (slot wrapped-stat 'st-size)
- (slot wrapped-stat 'st-atime)
- (slot wrapped-stat 'st-mtime)
- (slot wrapped-stat 'st-ctime)
- (slot wrapped-stat 'st-blksize)
- (slot wrapped-stat 'st-blocks)))
+ (slot wrapped-stat 'st-dev)
+ (slot wrapped-stat 'st-ino)
+ (slot wrapped-stat 'st-mode)
+ (slot wrapped-stat 'st-nlink)
+ (slot wrapped-stat 'st-uid)
+ (slot wrapped-stat 'st-gid)
+ (slot wrapped-stat 'st-rdev)
+ (slot wrapped-stat 'st-size)
+ (slot wrapped-stat 'st-atime)
+ (slot wrapped-stat 'st-mtime)
+ (slot wrapped-stat 'st-ctime)
+ (slot wrapped-stat 'st-blksize)
+ (slot wrapped-stat 'st-blocks)))
;;; Unix system calls in the stat(2) family are handled by calls to
;;; C-level wrapper functions which copy all the raw "struct stat"
(declare (type unix-pathname name))
(with-alien ((buf (struct wrapped_stat)))
(syscall ("stat_wrapper" c-string (* (struct wrapped_stat)))
- (%extract-stat-results (addr buf))
- name (addr buf))))
+ (%extract-stat-results (addr buf))
+ name (addr buf))))
(defun unix-lstat (name)
(declare (type unix-pathname name))
(with-alien ((buf (struct wrapped_stat)))
(syscall ("lstat_wrapper" c-string (* (struct wrapped_stat)))
- (%extract-stat-results (addr buf))
- name (addr buf))))
+ (%extract-stat-results (addr buf))
+ name (addr buf))))
(defun unix-fstat (fd)
(declare (type unix-fd fd))
(with-alien ((buf (struct wrapped_stat)))
(syscall ("fstat_wrapper" int (* (struct wrapped_stat)))
- (%extract-stat-results (addr buf))
- fd (addr buf))))
+ (%extract-stat-results (addr buf))
+ fd (addr buf))))
\f
;;;; time.h
;; timeval" but has nanoseconds instead of microseconds.
(define-alien-type nil
(struct timespec
- (tv-sec long) ; seconds
- (tv-nsec long))) ; nanoseconds
+ (tv-sec long) ; seconds
+ (tv-nsec long))) ; nanoseconds
;; used by other time functions
(define-alien-type nil
(struct tm
- (tm-sec int) ; Seconds. [0-60] (1 leap second)
- (tm-min int) ; Minutes. [0-59]
- (tm-hour int) ; Hours. [0-23]
- (tm-mday int) ; Day. [1-31]
- (tm-mon int) ; Month. [0-11]
- (tm-year int) ; Year - 1900.
- (tm-wday int) ; Day of week. [0-6]
- (tm-yday int) ; Days in year. [0-365]
- (tm-isdst int) ; DST. [-1/0/1]
- (tm-gmtoff long) ; Seconds east of UTC.
- (tm-zone c-string))) ; Timezone abbreviation.
+ (tm-sec int) ; Seconds. [0-60] (1 leap second)
+ (tm-min int) ; Minutes. [0-59]
+ (tm-hour int) ; Hours. [0-23]
+ (tm-mday int) ; Day. [1-31]
+ (tm-mon int) ; Month. [0-11]
+ (tm-year int) ; Year - 1900.
+ (tm-wday int) ; Day of week. [0-6]
+ (tm-yday int) ; Days in year. [0-365]
+ (tm-isdst int) ; DST. [-1/0/1]
+ (tm-gmtoff long) ; Seconds east of UTC.
+ (tm-zone c-string))) ; Timezone abbreviation.
(define-alien-routine get-timezone sb!alien:void
(when sb!alien:long :in)
- (minutes-west sb!alien:int :out)
+ (seconds-west sb!alien:int :out)
(daylight-savings-p sb!alien:boolean :out))
-(defun unix-get-minutes-west (secs)
- (multiple-value-bind (ignore minutes dst) (get-timezone secs)
+#!-win32
+(defun nanosleep (secs nsecs)
+ (with-alien ((req (struct timespec))
+ (rem (struct timespec)))
+ (setf (slot req 'tv-sec) secs)
+ (setf (slot req 'tv-nsec) nsecs)
+ (loop while (eql sb!unix:eintr
+ (nth-value 1
+ (int-syscall ("nanosleep" (* (struct timespec))
+ (* (struct timespec)))
+ (addr req) (addr rem))))
+ do (rotatef req rem))))
+
+(defun unix-get-seconds-west (secs)
+ (multiple-value-bind (ignore seconds dst) (get-timezone secs)
(declare (ignore ignore) (ignore dst))
- (values minutes)))
-
-(defun unix-get-timezone (secs)
- (multiple-value-bind (ignore minutes dst) (get-timezone secs)
- (declare (ignore ignore) (ignore minutes))
- (values (deref unix-tzname (if dst 1 0)))))
-
+ (values seconds)))
\f
;;;; sys/time.h
;;; obsolete and should never be used.
(define-alien-type nil
(struct timezone
- (tz-minuteswest int) ; minutes west of Greenwich
- (tz-dsttime int))) ; type of dst correction
+ (tz-minuteswest int) ; minutes west of Greenwich
+ (tz-dsttime int))) ; type of dst correction
;;; If it works, UNIX-GETTIMEOFDAY returns 5 values: T, the seconds
;;; and microseconds of the current time of day, the timezone (in
#!-sb-fluid (declaim (inline unix-gettimeofday))
(defun unix-gettimeofday ()
(with-alien ((tv (struct timeval))
- (tz (struct timezone)))
+ (tz (struct timezone)))
(syscall* ("gettimeofday" (* (struct timeval))
- (* (struct timezone)))
- (values T
- (slot tv 'tv-sec)
- (slot tv 'tv-usec)
- (slot tz 'tz-minuteswest)
- (slot tz 'tz-dsttime))
- (addr tv)
- (addr tz))))
+ (* (struct timezone)))
+ (values t
+ (slot tv 'tv-sec)
+ (slot tv 'tv-usec)
+ (slot tz 'tz-minuteswest)
+ (slot tz 'tz-dsttime))
+ (addr tv)
+ (addr tz))))
\f
;; Type of the second argument to `getitimer' and
-;; the second and third arguments `setitimer'.
+;; the second and third arguments `setitimer'.
(define-alien-type nil
(struct itimerval
- (it-interval (struct timeval)) ; timer interval
- (it-value (struct timeval)))) ; current value
+ (it-interval (struct timeval)) ; timer interval
+ (it-value (struct timeval)))) ; current value
-(defconstant ITIMER-REAL 0)
-(defconstant ITIMER-VIRTUAL 1)
-(defconstant ITIMER-PROF 2)
+(defconstant itimer-real 0)
+(defconstant itimer-virtual 1)
+(defconstant itimer-prof 2)
-(defun unix-getitimer(which)
+#!-win32
+(defun unix-getitimer (which)
"Unix-getitimer returns the INTERVAL and VALUE slots of one of
three system timers (:real :virtual or :profile). On success,
unix-getitimer returns 5 values,
T, it-interval-secs, it-interval-usec, it-value-secs, it-value-usec."
(declare (type (member :real :virtual :profile) which)
- (values t
- (unsigned-byte 29) (mod 1000000)
- (unsigned-byte 29) (mod 1000000)))
+ (values t
+ (unsigned-byte 29) (mod 1000000)
+ (unsigned-byte 29) (mod 1000000)))
(let ((which (ecase which
- (:real ITIMER-REAL)
- (:virtual ITIMER-VIRTUAL)
- (:profile ITIMER-PROF))))
+ (:real itimer-real)
+ (:virtual itimer-virtual)
+ (:profile itimer-prof))))
(with-alien ((itv (struct itimerval)))
(syscall* ("getitimer" int (* (struct itimerval)))
- (values T
- (slot (slot itv 'it-interval) 'tv-sec)
- (slot (slot itv 'it-interval) 'tv-usec)
- (slot (slot itv 'it-value) 'tv-sec)
- (slot (slot itv 'it-value) 'tv-usec))
- which (alien-sap (addr itv))))))
-
+ (values t
+ (slot (slot itv 'it-interval) 'tv-sec)
+ (slot (slot itv 'it-interval) 'tv-usec)
+ (slot (slot itv 'it-value) 'tv-sec)
+ (slot (slot itv 'it-value) 'tv-usec))
+ which (alien-sap (addr itv))))))
+
+#!-win32
(defun unix-setitimer (which int-secs int-usec val-secs val-usec)
" Unix-setitimer sets the INTERVAL and VALUE slots of one of
three system timers (:real :virtual or :profile). A SIGALRM signal
unix-setitimer returns the old contents of the INTERVAL and VALUE
slots as in unix-getitimer."
(declare (type (member :real :virtual :profile) which)
- (type (unsigned-byte 29) int-secs val-secs)
- (type (integer 0 (1000000)) int-usec val-usec)
- (values t
- (unsigned-byte 29) (mod 1000000)
- (unsigned-byte 29) (mod 1000000)))
+ (type (unsigned-byte 29) int-secs val-secs)
+ (type (integer 0 (1000000)) int-usec val-usec)
+ (values t
+ (unsigned-byte 29) (mod 1000000)
+ (unsigned-byte 29) (mod 1000000)))
(let ((which (ecase which
- (:real ITIMER-REAL)
- (:virtual ITIMER-VIRTUAL)
- (:profile ITIMER-PROF))))
+ (:real itimer-real)
+ (:virtual itimer-virtual)
+ (:profile itimer-prof))))
(with-alien ((itvn (struct itimerval))
- (itvo (struct itimerval)))
+ (itvo (struct itimerval)))
(setf (slot (slot itvn 'it-interval) 'tv-sec ) int-secs
- (slot (slot itvn 'it-interval) 'tv-usec) int-usec
- (slot (slot itvn 'it-value ) 'tv-sec ) val-secs
- (slot (slot itvn 'it-value ) 'tv-usec) val-usec)
+ (slot (slot itvn 'it-interval) 'tv-usec) int-usec
+ (slot (slot itvn 'it-value ) 'tv-sec ) val-secs
+ (slot (slot itvn 'it-value ) 'tv-usec) val-usec)
(syscall* ("setitimer" int (* (struct timeval))(* (struct timeval)))
- (values T
- (slot (slot itvo 'it-interval) 'tv-sec)
- (slot (slot itvo 'it-interval) 'tv-usec)
- (slot (slot itvo 'it-value) 'tv-sec)
- (slot (slot itvo 'it-value) 'tv-usec))
- which (alien-sap (addr itvn))(alien-sap (addr itvo))))))
-
-(defmacro sb!ext::with-timeout (expires &body body)
- "Execute the body, interrupting it with a SIGALRM after at least
-EXPIRES seconds have passed. Uses Unix setitimer(), restoring any
-previous timer after the body has finished executing"
- (let ((saved-seconds (gensym "SAVED-SECONDS"))
- (saved-useconds (gensym "SAVED-USECONDS"))
- (s (gensym "S")) (u (gensym "U")))
- `(let (- ,saved-seconds ,saved-useconds)
- (multiple-value-setq (- - - ,saved-seconds ,saved-useconds)
- (unix-getitimer :real))
- (multiple-value-bind (,s ,u) (floor ,expires)
- (setf ,u (floor (* ,u 1000000)))
- (if (and (> ,expires 0)
- (or (and (zerop ,saved-seconds) (zerop ,saved-useconds))
- (> ,saved-seconds ,s)
- (and (= ,saved-seconds ,s)
- (> ,saved-useconds ,u))))
- (unwind-protect
- (progn
- (unix-setitimer :real 0 0 ,s ,u)
- ,@body)
- (unix-setitimer :real 0 0 ,saved-seconds ,saved-useconds))
- ,@body)))))
+ (values t
+ (slot (slot itvo 'it-interval) 'tv-sec)
+ (slot (slot itvo 'it-interval) 'tv-usec)
+ (slot (slot itvo 'it-value) 'tv-sec)
+ (slot (slot itvo 'it-value) 'tv-usec))
+ which (alien-sap (addr itvn))(alien-sap (addr itvo))))))
\f
-
-(defconstant ENOENT 2) ; Unix error code, "No such file or directory"
-(defconstant EINTR 4) ; Unix error code, "Interrupted system call"
-(defconstant EIO 5) ; Unix error code, "I/O error"
-(defconstant EEXIST 17) ; Unix error code, "File exists"
-(defconstant ESPIPE 29) ; Unix error code, "Illegal seek"
-(defconstant EWOULDBLOCK 11) ; Unix error code, "Operation would block"
;;; FIXME: Many Unix error code definitions were deleted from the old
;;; CMU CL source code here, but not in the exports of SB-UNIX. I
;;; (WHN) hope that someday I'll figure out an automatic way to detect
;;; enough of them all in one place here that they should probably be
;;; removed by hand.
\f
-\f
;;;; support routines for dealing with Unix pathnames
(defun unix-file-kind (name &optional check-for-links)
#!+sb-doc
"Return either :FILE, :DIRECTORY, :LINK, :SPECIAL, or NIL."
- (declare (simple-base-string name))
+ (declare (simple-string name))
(multiple-value-bind (res dev ino mode)
(if check-for-links (unix-lstat name) (unix-stat name))
(declare (type (or fixnum null) mode)
- (ignore dev ino))
+ (ignore dev ino))
(when res
(let ((kind (logand mode s-ifmt)))
- (cond ((eql kind s-ifdir) :directory)
- ((eql kind s-ifreg) :file)
- ((eql kind s-iflnk) :link)
- (t :special))))))
+ (cond ((eql kind s-ifdir) :directory)
+ ((eql kind s-ifreg) :file)
+ #!-win32
+ ((eql kind s-iflnk) :link)
+ (t :special))))))
;;; Is the Unix pathname PATHNAME relative, instead of absolute? (E.g.
;;; "passwd" or "etc/passwd" instead of "/etc/passwd"?)
;;; try to handle any more generality than that.
(defun unix-resolve-links (pathname)
(declare (type simple-string pathname))
+ ;; KLUDGE: The Win32 platform doesn't have symbolic links, so
+ ;; short-cut this computation (and the check for being an absolute
+ ;; unix pathname...)
+ #!+win32 (return-from unix-resolve-links pathname)
(aver (not (relative-unix-pathname? pathname)))
+ ;; KLUDGE: readlink and lstat are unreliable if given symlinks
+ ;; ending in slashes -- fix the issue here instead of waiting for
+ ;; libc to change...
+ ;;
+ ;; but be careful! Must not strip the final slash from "/". (This
+ ;; adjustment might be a candidate for being transferred into the C
+ ;; code in a wrap_readlink() function, too.) CSR, 2006-01-18
+ (let ((len (length pathname)))
+ (when (and (> len 1) (eql #\/ (schar pathname (1- len))))
+ (setf pathname (subseq pathname 0 (1- len)))))
(/noshow "entering UNIX-RESOLVE-LINKS")
(loop with previous-pathnames = nil do
- (/noshow pathname previous-pathnames)
- (let ((link (unix-readlink pathname)))
- (/noshow link)
- ;; Unlike the old CMU CL code, we handle a broken symlink by
- ;; returning the link itself. That way, CL:TRUENAME on a
- ;; broken link returns the link itself, so that CL:DIRECTORY
- ;; can return broken links, so that even without
- ;; Unix-specific extensions to do interesting things with
- ;; them, at least Lisp programs can see them and, if
- ;; necessary, delete them. (This is handy e.g. when your
- ;; managed-by-Lisp directories are visited by Emacs, which
- ;; creates broken links as notes to itself.)
- (if (null link)
- (return pathname)
- (let ((new-pathname
- (unix-simplify-pathname
- (if (relative-unix-pathname? link)
- (let* ((dir-len (1+ (position #\/
- pathname
- :from-end t)))
- (dir (subseq pathname 0 dir-len)))
- (/noshow dir)
- (concatenate 'string dir link))
- link))))
- (if (unix-file-kind new-pathname)
- (setf pathname new-pathname)
- (return pathname)))))
- ;; To generalize the principle that even if portable Lisp code
- ;; can't do anything interesting with a broken symlink, at
- ;; least it should be able to see and delete it, when we
- ;; detect a cyclic link, we return the link itself. (So even
- ;; though portable Lisp code can't do anything interesting
- ;; with a cyclic link, at least it can see it and delete it.)
- (if (member pathname previous-pathnames :test #'string=)
- (return pathname)
- (push pathname previous-pathnames))))
-
-(defun unix-simplify-pathname (src)
- (declare (type simple-string src))
- (let* ((src-len (length src))
- (dst (make-string src-len))
- (dst-len 0)
- (dots 0)
- (last-slash nil))
- (macrolet ((deposit (char)
- `(progn
- (setf (schar dst dst-len) ,char)
- (incf dst-len))))
- (dotimes (src-index src-len)
- (let ((char (schar src src-index)))
- (cond ((char= char #\.)
- (when dots
- (incf dots))
- (deposit char))
- ((char= char #\/)
- (case dots
- (0
- ;; either ``/...' or ``...//...'
- (unless last-slash
- (setf last-slash dst-len)
- (deposit char)))
- (1
- ;; either ``./...'' or ``..././...''
- (decf dst-len))
- (2
- ;; We've found ..
- (cond
- ((and last-slash (not (zerop last-slash)))
- ;; There is something before this ..
- (let ((prev-prev-slash
- (position #\/ dst :end last-slash :from-end t)))
- (cond ((and (= (+ (or prev-prev-slash 0) 2)
- last-slash)
- (char= (schar dst (- last-slash 2)) #\.)
- (char= (schar dst (1- last-slash)) #\.))
- ;; The something before this .. is another ..
- (deposit char)
- (setf last-slash dst-len))
- (t
- ;; The something is some directory or other.
- (setf dst-len
- (if prev-prev-slash
- (1+ prev-prev-slash)
- 0))
- (setf last-slash prev-prev-slash)))))
- (t
- ;; There is nothing before this .., so we need to keep it
- (setf last-slash dst-len)
- (deposit char))))
- (t
- ;; something other than a dot between slashes
- (setf last-slash dst-len)
- (deposit char)))
- (setf dots 0))
- (t
- (setf dots nil)
- (setf (schar dst dst-len) char)
- (incf dst-len))))))
- (when (and last-slash (not (zerop last-slash)))
- (case dots
- (1
- ;; We've got ``foobar/.''
- (decf dst-len))
- (2
- ;; We've got ``foobar/..''
- (unless (and (>= last-slash 2)
- (char= (schar dst (1- last-slash)) #\.)
- (char= (schar dst (- last-slash 2)) #\.)
- (or (= last-slash 2)
- (char= (schar dst (- last-slash 3)) #\/)))
- (let ((prev-prev-slash
- (position #\/ dst :end last-slash :from-end t)))
- (if prev-prev-slash
- (setf dst-len (1+ prev-prev-slash))
- (return-from unix-simplify-pathname "./")))))))
- (cond ((zerop dst-len)
- "./")
- ((= dst-len src-len)
- dst)
- (t
- (subseq dst 0 dst-len)))))
+ (/noshow pathname previous-pathnames)
+ (let ((link (unix-readlink pathname)))
+ (/noshow link)
+ ;; Unlike the old CMU CL code, we handle a broken symlink by
+ ;; returning the link itself. That way, CL:TRUENAME on a
+ ;; broken link returns the link itself, so that CL:DIRECTORY
+ ;; can return broken links, so that even without
+ ;; Unix-specific extensions to do interesting things with
+ ;; them, at least Lisp programs can see them and, if
+ ;; necessary, delete them. (This is handy e.g. when your
+ ;; managed-by-Lisp directories are visited by Emacs, which
+ ;; creates broken links as notes to itself.)
+ (if (null link)
+ (return pathname)
+ (let ((new-pathname
+ (simplify-namestring
+ (if (relative-unix-pathname? link)
+ (let* ((dir-len (1+ (position #\/
+ pathname
+ :from-end t)))
+ (dir (subseq pathname 0 dir-len)))
+ (/noshow dir)
+ (concatenate 'string dir link))
+ link))))
+ (if (unix-file-kind new-pathname)
+ (setf pathname new-pathname)
+ (return pathname)))))
+ ;; To generalize the principle that even if portable Lisp code
+ ;; can't do anything interesting with a broken symlink, at
+ ;; least it should be able to see and delete it, when we
+ ;; detect a cyclic link, we return the link itself. (So even
+ ;; though portable Lisp code can't do anything interesting
+ ;; with a cyclic link, at least it can see it and delete it.)
+ (if (member pathname previous-pathnames :test #'string=)
+ (return pathname)
+ (push pathname previous-pathnames))))
+\f
+;;; UNIX specific code, that has been cleanly separated from the
+;;; Windows build.
+#!-win32
+(progn
+ (defconstant micro-seconds-per-internal-time-unit
+ (/ 1000000 sb!xc:internal-time-units-per-second))
+
+ (declaim (inline system-internal-real-time system-internal-run-time))
+ (defun system-internal-real-time ()
+ (multiple-value-bind (ignore seconds useconds) (unix-gettimeofday)
+ (declare (ignore ignore) (type (unsigned-byte 32) seconds useconds))
+ (let ((uint (truncate useconds
+ micro-seconds-per-internal-time-unit)))
+ (declare (type (unsigned-byte 32) uint))
+ (+ (* seconds sb!xc:internal-time-units-per-second)
+ uint))))
+
+ (defun system-internal-run-time ()
+ (multiple-value-bind (ignore utime-sec utime-usec stime-sec stime-usec)
+ (unix-fast-getrusage rusage_self)
+ (declare (ignore ignore)
+ (type (unsigned-byte 31) utime-sec stime-sec)
+ ;; (Classic CMU CL had these (MOD 1000000) instead, but
+ ;; at least in Linux 2.2.12, the type doesn't seem to
+ ;; be documented anywhere and the observed behavior is
+ ;; to sometimes return 1000000 exactly.)
+ (type (integer 0 1000000) utime-usec stime-usec))
+ (let ((result (+ (* (+ utime-sec stime-sec)
+ sb!xc:internal-time-units-per-second)
+ (floor (+ utime-usec
+ stime-usec
+ (floor micro-seconds-per-internal-time-unit 2))
+ micro-seconds-per-internal-time-unit))))
+ result))))
\f
;;;; A magic constant for wait3().
;;;;
;;; not checked for linux...
(defmacro fd-set (offset fd-set)
(let ((word (gensym))
- (bit (gensym)))
- `(multiple-value-bind (,word ,bit) (floor ,offset 32)
+ (bit (gensym)))
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
(setf (deref (slot ,fd-set 'fds-bits) ,word)
- (logior (truly-the (unsigned-byte 32) (ash 1 ,bit))
- (deref (slot ,fd-set 'fds-bits) ,word))))))
+ (logior (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
+ (ash 1 ,bit))
+ (deref (slot ,fd-set 'fds-bits) ,word))))))
;;; not checked for linux...
(defmacro fd-clr (offset fd-set)
(let ((word (gensym))
- (bit (gensym)))
- `(multiple-value-bind (,word ,bit) (floor ,offset 32)
+ (bit (gensym)))
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
(setf (deref (slot ,fd-set 'fds-bits) ,word)
- (logand (deref (slot ,fd-set 'fds-bits) ,word)
- (sb!kernel:32bit-logical-not
- (truly-the (unsigned-byte 32) (ash 1 ,bit))))))))
+ (logand (deref (slot ,fd-set 'fds-bits) ,word)
+ (sb!kernel:word-logical-not
+ (truly-the (unsigned-byte #.sb!vm:n-machine-word-bits)
+ (ash 1 ,bit))))))))
;;; not checked for linux...
(defmacro fd-isset (offset fd-set)
(let ((word (gensym))
- (bit (gensym)))
- `(multiple-value-bind (,word ,bit) (floor ,offset 32)
+ (bit (gensym)))
+ `(multiple-value-bind (,word ,bit) (floor ,offset
+ sb!vm:n-machine-word-bits)
(logbitp ,bit (deref (slot ,fd-set 'fds-bits) ,word)))))
;;; not checked for linux...
(defmacro fd-zero (fd-set)
`(progn
- ,@(loop for index upfrom 0 below (/ fd-setsize 32)
- collect `(setf (deref (slot ,fd-set 'fds-bits) ,index) 0))))
-
+ ,@(loop for index upfrom 0 below (/ fd-setsize sb!vm:n-machine-word-bits)
+ collect `(setf (deref (slot ,fd-set 'fds-bits) ,index) 0))))
projects / sbcl.git / blobdiff