1.0.10.14: remove locking and gc inhibition from hash-tables, power of 2 sizes

[sbcl.git] / base-target-features.lisp-expr

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index d614afa..78139e0 100644 (file)
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -57,14 +57,6 @@
  ;; local-target-features.lisp-expr via make-config.sh, as alpha,
  ;; sparc and ppc ports don't currently support it. -- CSR, 2002-02-21
 
- ;; We're running under a UNIX. This is sort of redundant, and it was also
- ;; sort of redundant under CMU CL, which we inherited it from: neither SBCL
- ;; nor CMU CL supports anything but UNIX (and "technically not UNIX"es
- ;; such as *BSD and Linux). But someday, maybe we might, and in that case
- ;; we'd presumably remove this, so its presence conveys the information
- ;; that the system isn't one which follows such a change.
- :unix
-
  ;;
  ;; features present in this particular build
  ;;
@@ -146,6 +138,13 @@
  ;; anyone who wants to collect such statistics in the future.
  ; :sb-dyncount
 
+ ;; Enable code for detecting concurrent accesses to the same hash-table
+ ;; in multiple threads. Note that this implementation is currently
+ ;; (2007-09-11) somewhat too eager: even though in the current implementation
+ ;; multiple readers are thread safe as long as there are no writers, this
+ ;; code will also trap multiple readers.
+ ; :sb-hash-table-debug
+
  ;; Peter Van Eynde's increase-bulletproofness code for CMU CL
  ;;
  ;; Some of the code which was #+high-security before the fork has now
@@ -296,8 +295,7 @@
  ;;   :hppa
  ;;      any PA-RISC CPU
  ;;   :mips
- ;;      any MIPS CPU (in little-endian mode with :little-endian -- currently
- ;;      untested)
+ ;;      any MIPS CPU (in little-endian mode with :little-endian)
  ;;
  ;; (CMU CL also had a :pentium feature, which affected the definition
  ;; of some floating point vops. It was present but not enabled or
@@ -327,6 +325,9 @@
  ;;     The backend implements compare-and-swap VOPs.
  ;;
  ;; operating system features:
+ ;;   :unix    = We're intended to run under some Unix-like OS. (This is not
+ ;;              exclusive with the features which indicate which particular
+ ;;              Unix-like OS we're intended to run under.)
  ;;   :linux   = We're intended to run under some version of Linux.
  ;;   :bsd     = We're intended to run under some version of BSD Unix. (This
  ;;              is not exclusive with the features which indicate which
@@ -339,8 +340,8 @@
  ;;              with the SunOS kernel.
  ;;   :osf1    = We're intended to run under Tru64 (aka Digital Unix
  ;;              aka OSF/1).
- ;; (No others are supported by SBCL as of 0.9.6, but :hpux or :irix
+ ;;   :win32   = We're intended to under some version of Microsoft Windows.
+ ;; (No others are supported by SBCL as of 1.0.8, but :hpux or :irix
  ;; support could be ported from CMU CL if anyone is sufficiently
- ;; motivated to do so, and it'd even be possible, though harder, to
- ;; port the system to Microsoft Windows.)
+ ;; motivated to do so.)
  )