2001-04-04 Hans Boehm <hans_boehm@hp.com>

	* finalize.c:
	- Accomodate finalization requests for static objects.
	  (Will be required by hash synchronization.  May be needed
	  in some configurations now.)

	* gc_priv.h:
	- Define MIN_WORDS.  All allocation requests are rounded
	  up to at least this size.  Removes a subtle assumption that
	  Java objects have a 2 word header.

	* gcconfig.h:
	- Adjust Linux/IA64 configuration for non-ancient kernels.
	  (Necessary fix for IA64.)

	* linux_threads.c:
	- Fix syntax error in currently unused code.  Will be needed
	  for Linux/PA-RISC.

	* malloc.c:
	- Handle MIN_WORDS.

	* misc.c:
	- Handle MIN_WORDS.
	- Change stack cleaning code to typically clear about one tenth
	  the memory it used to in the threads configuration.  Occasionally
	  still clear more.  (This is really a fix for a long-standing
	  and fairly significant performance bug with threads.)

	* os_dep.c:
	- Fix the code for finding the beginning of the data segment under
	  Linux.  I believe this is necessary for some IA64 Linux
	  distributions.  It will also helo other platforms, though those
	  may additionally require a gcconfig.h adjustment.  (This basically
	  works around the absence of a data_start or __data_start
	  definition in glibc.)

	* test.c:
	- Handle rounding due to MIN_WORDS.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@41102 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 15 insertions, 1 deletions

diff --git a/boehm-gc/finalize.c b/boehm-gc/finalize.c
index e70a9ff1e99..7ff6798cfa5 100644
--- a/boehm-gc/finalize.c
+++ b/boehm-gc/finalize.c
@@ -324,6 +324,7 @@ finalization_mark_proc * mp;
     struct finalizable_object * curr_fo, * prev_fo;
     int index;
     struct finalizable_object *new_fo;
+    hdr *hhdr;
     DCL_LOCK_STATE;
 
 #   ifdef THREADS
@@ -402,6 +403,19 @@ finalization_mark_proc * mp;
 #	endif
         return;
     }
+    GET_HDR(base, hhdr);
+    if (0 == hhdr) {
+      /* We won't collect it, hence finalizer wouldn't be run. */
+      /* This is changed for gcj, but it will be in version 6.0 of the	*/
+      /* standard collector distribution.  It costs virtually nothing	*/
+      /* here, but it's expensive to check in the hash synchronization	*/
+      /* code, where it matters.		-HB			*/
+#     ifdef THREADS
+          UNLOCK();
+    	  ENABLE_SIGNALS();
+#     endif
+      return;
+    }
 #   ifdef THREADS
       new_fo = (struct finalizable_object *)
     	GC_generic_malloc_inner(sizeof(struct finalizable_object),NORMAL);
@@ -413,7 +427,7 @@ finalization_mark_proc * mp;
         new_fo -> fo_hidden_base = (word)HIDE_POINTER(base);
 	new_fo -> fo_fn = fn;
 	new_fo -> fo_client_data = (ptr_t)cd;
-	new_fo -> fo_object_size = GC_size(base);
+	new_fo -> fo_object_size = hhdr -> hb_sz;
 	new_fo -> fo_mark_proc = mp;
 	fo_set_next(new_fo, fo_head[index]);
 	GC_fo_entries++;