X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fruntime%2Finterrupt.c;h=3e308b164d587affcd1c4e6ca09d07bddb9b859f;hb=db0691b05cc99ce010ecae78bb532b594aea1859;hp=467a2e4431cefab9fc412c8d5e12845f15fbdf6a;hpb=686043635c45a16b418d2cc96a7f704fdab182c2;p=sbcl.git

diff --git a/src/runtime/interrupt.c b/src/runtime/interrupt.c
index 467a2e4..3e308b1 100644
--- a/src/runtime/interrupt.c
+++ b/src/runtime/interrupt.c
@@ -32,6 +32,7 @@
 #include "dynbind.h"
 #include "interr.h"
 
+
 void sigaddset_blockable(sigset_t *s)
 {
     sigaddset(s, SIGHUP);
@@ -550,11 +551,20 @@ interrupt_maybe_gc(int signal, siginfo_t *info, void *void_context)
 	    arch_set_pseudo_atomic_interrupted(context);
 	}
 	else {
+	    lispobj *old_free_space=current_dynamic_space;
 	    fake_foreign_function_call(context);
 	    funcall0(SymbolFunction(MAYBE_GC));
 	    undo_fake_foreign_function_call(context);
-	}
-
+	    if(current_dynamic_space==old_free_space) 
+		/* MAYBE-GC (as the name suggest) might not.  If it
+		 * doesn't, it won't reset the GC trigger either, so we
+		 * have to do it ourselves.  Add small amount of space
+		 * to tide us over while GC is inhibited 
+		 */
+		set_auto_gc_trigger((u32)dynamic_space_free_pointer
+				    -(u32)current_dynamic_space
+				    +(u32)os_vm_page_size);
+	}       
 	return 1;
     } else {
 	return 0;