From: bryce <bryce@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 10 Mar 2002 03:53:16 +0000 (+0000)
Subject: libjava:
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4fc8a33840c2ac7e406b2bf57b034042f2bfc729;p=gc

libjava:
	Hashtable synchronization for PowerPC.
	* configure.in: Define SLOW_PTHREAD_SELF if configure.host set
	slow_pthread_self. Set up symlink for sysdeps directory.
	* configure: Rebuild.
	* configure.host: Document more shell variables. Set sysdeps_dir
	for most platforms. Set slow_pthread_self for i686. Set
	enable_hash_synchronization_default and slow_pthread_self for PowerPC.
	* posix-threads.cc (_Jv_ThreadSelf_out_of_line): Use release_set so
	that memory barrier is emitted where required.
	* prims.cc: 64-bit align static primitive class instances.
	* include/posix-threads.h (_Jv_ThreadSelf for SLOW_PTHREAD_SELF): Add
	read_barrier() to enforce ordering of reads.
	* sysdep/powerpc/locks.h: New file. Implementation of synchronization
	primitives for PowerPC.
	* sysdep/i386/locks.h: New file. Synchronization primitives for i386
	moved from natObject.cc.
	* sysdep/alpha/locks.h: Likewise.
	* sysdep/ia64/locks.h: Likewise.
	* sysdep/generic/locks.h: Likewise.
	* java/lang/natObject.cc: Move thread synchronization primitives to
	system-dependent headers.
gcc/java:
	* decl.c (java_init_decl_processing): Make sure class_type_node
	alignment is not less than 64 bits if hash synchronization isenabled.

boehm-gc:
	* include/gc_priv.h: Define ALIGN_DOUBLE on 32 bit targets if GCJ
	support is enabled, for hash synchronization.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@50523 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/ChangeLog b/ChangeLog
index 4b1ac14c..204d4c92 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2002-03-09  Bryce McKinlay  <bryce@waitaki.otago.ac.nz>
+
+	* include/gc_priv.h: Define ALIGN_DOUBLE on 32 bit targets if GCJ 
+	support is enabled, for hash synchronization.
+
 2002-02-24  Adam Megacz  <adam@xwt.org>
 
 	* Makefile.am: Added win32_threads.c to sources list.
diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h
index ae406cb9..642cad8f 100644
--- a/include/private/gc_priv.h
+++ b/include/private/gc_priv.h
@@ -205,6 +205,12 @@ typedef char * ptr_t;	/* A generic pointer to which we can add	*/
    /* odd numbered words to have mark bits.				*/
 #endif
 
+#if defined(GC_GCJ_SUPPORT) && ALIGNMENT < 8 && !defined(ALIGN_DOUBLE)
+   /* GCJ's Hashtable synchronization code requires 64-bit alignment.	*/
+#  define ALIGN_DOUBLE
+#endif
+
+
 /* ALIGN_DOUBLE requires MERGE_SIZES at present. */
 # if defined(ALIGN_DOUBLE) && !defined(MERGE_SIZES)
 #   define MERGE_SIZES