X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=74bf08306c5f57a9cab99b141acf3920370d2008;hb=bcd323c39d6f5f80020ba4a5d9eb8d348c6cc499;hp=8237b15ef5a6c906dfe6bdb0230d544f327f3427;hpb=d6f9676ae94419cb5544c45821a8d31adbc1fbe8;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index 8237b15..74bf083 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -122,6 +122,12 @@
  ;; original CMU CL code.)
  ; :sb-show-assem
 
+ ;; Compile the C runtime with support for low-level debugging output
+ ;; through FSHOW and FSHOW_SIGNAL.  If enabled, this feature allows
+ ;; users to turn on such debugging output using environment variables at
+ ;; run-time.
+ ; :sb-qshow
+
  ;; Setting this makes SBCL more "fluid", i.e. more amenable to
  ;; modification at runtime, by suppressing various INLINE declarations,
  ;; compiler macro definitions, FREEZE-TYPE declarations; and by
@@ -232,7 +238,7 @@
  ;; thread local storage) is not reliably preserved in signal
  ;; handlers, so we need to restore its value from the pthread thread
  ;; local storage.
- ; :restore-tls-segment-register-from-tls
+ ; :restore-fs-segment-register-from-tls
 
  ;; On some x86oid operating systems (darwin) SIGTRAP is not reliably
  ;; delivered for the INT3 instruction, so we use the UD2 instruction
@@ -266,6 +272,11 @@
  ;; It'll increase the core size by major 5-6mB, though.
  ; :sb-xref-for-internals
 
+ ;; We support package local nicknames. No :sb-prefix here as we vainly
+ ;; believe our API is worth copying to other implementations as well.
+ ;; This doesn't affect the build at all, merely declares how things are.
+ :package-local-nicknames
+
  ;; This affects the definition of a lot of things in bignum.lisp. It
  ;; doesn't seem to be documented anywhere what systems it might apply
  ;; to. It doesn't seem to be needed for X86 systems anyway.
@@ -317,6 +328,26 @@
  ;; on zlib.
  ; :sb-core-compression
 
+ ;; On certain thread-enabled platforms, synchronization between threads
+ ;; for the purpose of stopping and starting the world around GC can be
+ ;; performed using safepoints instead of signals.  Enable this feature
+ ;; to compile with safepoints and to use them for GC.
+ ;; (Replaces use of SIG_STOP_FOR_GC.)
+ ; :sb-safepoint
+
+ ;; When compiling with safepoints, the INTERRUPT-THREAD mechanism can
+ ;; also use safepoints to roll the target thread to a point at which it
+ ;; can be interrupted safely, instead of using a signal for this
+ ;; purpose.  Enable this feature in addition to :SB-SAFEPOINT to enable
+ ;; such behaviour.
+ ;; (Replaces use of SIGPIPE, except to wake up syscalls.)
+ ; :sb-thruption
+
+ ;; When compiling with safepoints and thruptions, the TIMER facility
+ ;; can replace its use of setitimer with a background thread.
+ ;; (Replaces use of SIGALRM.)
+ ; :sb-wtimer
+
  ;;
  ;; miscellaneous notes on other things which could have special significance
  ;; in the *FEATURES* list