X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=9ba7b4d90c565bde12416f1cbf88bb78a3f1c3ee;hb=c4328785e9e1bd3538ee8d32fa27118ccf7eb388;hp=680e29d4433cdb23a01fd2fecc6b0ada4e40db9a;hpb=ebb604b4422ba886e70ce2e531c1f4d28d44e721;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index 680e29d..9ba7b4d 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -238,7 +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
@@ -327,6 +327,7 @@
  ;; 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
@@ -334,8 +335,14 @@
  ;; 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