boehm-gc

	PR libgcj/13212:
	* configure.ac: Check for pthread_getattr_np(). Remove
	GC_PTHREAD_SYM_VERSION detection.
	* include/gc.h (GC_register_my_thread, GC_unregister_my_thread,
	GC_get_thread_stack_base): New declarations.
	* pthread_support.c (GC_register_my_thread, GC_unregister_my_thread,
	GC_get_thread_stack_base): New functions.
	(GC_delete_thread): Don't try to free the first_thread.
	* misc.c (GC_init_inner): Use GC_get_thread_stack_base() if possible.
	(pthread_create_, constr): Removed.
	(pthread_create): Don't rename.
	* include/gc_ext_config.h.in: Rebuilt.
	* include/gc_pthread_redirects.h (pthread_create): Define 
	unconditionally.
	* include/gc_config.h.in: Rebuilt.
	* configure: Rebuilt.
libjava
	* java/lang/natThread.cc (_Jv_AttachCurrentThread): Attach thread
	to GC.
	(_Jv_DetachCurrentThread): Detach thread from GC.
	* include/boehm-gc.h (_Jv_GCAttachThread, _Jv_GCDetachThread):
	Declare.
	* boehm.cc (_Jv_GCAttachThread): New function.
	(_Jv_GCDetachThread): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116313 138bc75d-0d04-0410-961f-82ee72b054a4

4 files changed, 23 insertions, 7 deletions

diff --git a/boehm-gc/include/gc.h b/boehm-gc/include/gc.h
index e6ab2c608c4..5ba1f4becfe 100644
--- a/boehm-gc/include/gc.h
+++ b/boehm-gc/include/gc.h
@@ -69,7 +69,6 @@
     extern "C" {
 # endif
 
-
 /* Define word and signed_word to be unsigned and signed types of the 	*/
 /* size as char * or void *.  There seems to be no way to do this	*/
 /* even semi-portably.  The following is probably no better/worse 	*/
@@ -912,6 +911,25 @@ GC_API void (*GC_is_visible_print_proc)
 # if defined(PCR) || defined(GC_SOLARIS_THREADS) || \
      defined(GC_PTHREADS) || defined(GC_WIN32_THREADS)
    	/* Any flavor of threads except SRC_M3.	*/
+
+/* Register the current thread as a new thread whose stack(s) should    */
+/* be traced by the GC.  						*/
+/* If a platform does not implicitly do so, this must be called before  */
+/* a thread can allocate garbage collected memory, or assign pointers	*/
+/* to the garbage collected heap.  Once registered, a thread will be	*/
+/* stopped during garbage collections.					*/
+GC_API void GC_register_my_thread GC_PROTO((void));
+
+/* Register the current thread, with the indicated stack base, as	*/
+/* a new thread whose stack(s) should be traced by the GC.  If a 	*/
+/* platform does not implicitly do so, this must be called before a	*/
+/* thread can allocate garbage collected memory, or assign pointers	*/
+/* to the garbage collected heap.  Once registered, a thread will be	*/
+/* stopped during garbage collections.					*/
+GC_API void GC_unregister_my_thread GC_PROTO((void));
+
+GC_API GC_PTR GC_get_thread_stack_base GC_PROTO((void));
+
 /* This returns a list of objects, linked through their first		*/
 /* word.  Its use can greatly reduce lock contention problems, since	*/
 /* the allocation lock can be acquired and released many fewer times.	*/
diff --git a/boehm-gc/include/gc_config.h.in b/boehm-gc/include/gc_config.h.in
index 401de609ba6..5055b502459 100644
--- a/boehm-gc/include/gc_config.h.in
+++ b/boehm-gc/include/gc_config.h.in
@@ -45,9 +45,6 @@
 /* support for Tru64 pthreads */
 #undef GC_OSF1_THREADS
 
-/* symbol version of pthread_create */
-#undef GC_PTHREAD_SYM_VERSION
-
 /* support for Solaris pthreads */
 #undef GC_SOLARIS_PTHREADS
 
@@ -81,6 +78,9 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
+/* Define to 1 if you have the `pthread_getattr_np' function. */
+#undef HAVE_PTHREAD_GETATTR_NP
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
diff --git a/boehm-gc/include/gc_ext_config.h.in b/boehm-gc/include/gc_ext_config.h.in
index 716143dc62f..219ba2fb8c8 100644
--- a/boehm-gc/include/gc_ext_config.h.in
+++ b/boehm-gc/include/gc_ext_config.h.in
@@ -4,4 +4,4 @@ is used by libjava/include/boehm-gc.h. */
 
 #undef THREAD_LOCAL_ALLOC
 
-#undef GC_PTHREAD_SYM_VERSION
+#undef HAVE_PTHREAD_GETATTR_NP
diff --git a/boehm-gc/include/gc_pthread_redirects.h b/boehm-gc/include/gc_pthread_redirects.h
index f9d4939affc..842518cfcc4 100644
--- a/boehm-gc/include/gc_pthread_redirects.h
+++ b/boehm-gc/include/gc_pthread_redirects.h
@@ -68,9 +68,7 @@
 # undef pthread_detach
 #endif
 
-#ifndef GC_PTHREAD_SYM_VERSION
 # define pthread_create GC_pthread_create
-#endif
 # define pthread_join GC_pthread_join
 # define pthread_detach GC_pthread_detach