natThrowable.cc: New file.

2000-01-14  Andrew Haley  <aph@cygnus.com>

	* java/lang/natThrowable.cc: New file.

	* java/lang/Throwable.java (fillInStackTrace): Make native.
	(printStackTrace): Call native method to do this.
	(Throwable): Call fillInStackTrace.
	(stackTrace): New variable.

	* include/jvm.h: Add _Jv_ThisExecutable functions.

	* prims.cc: (_Jv_execName): New variable.
	(catch_segv): Call fillInStackTrace.
	(catch_fpe): Ditto.
	(_Jv_ThisExecutable): New functions.
	(JvRunMain): Set the name of this executable.

	* Makefile.am: Add java/lang/natThrowable.cc.
	Add name-finder.cc.
	* Makefile.in: Rebuilt.

	* acconfig.h: Add HAVE_PROC_SELF_EXE.

	* configure.in: Force link with __frame_state_for in
	FORCELIBGCCSPEC.  Add new checks for backtrace.
	* include/config.h.in: Rebuilt.

	* name-finder.cc: New file.
	* include/name-finder.h: New file.

From-SVN: r31460

3 files changed, 95 insertions, 0 deletions

diff --git a/libjava/include/config.h.in b/libjava/include/config.h.in
index 8dbdc5d..c636c93 100644
--- a/libjava/include/config.h.in
+++ b/libjava/include/config.h.in
@@ -135,12 +135,25 @@
 /* Define if using setjmp/longjmp exceptions.  */
 #undef SJLJ_EXCEPTIONS
 
+/* Define if you have /proc/self/exe */
+#undef HAVE_PROC_SELF_EXE
+
+ 
 /* Define if getuid() and friends are missing.  */
 #undef NO_GETUID
 
 /* Define if you have the access function.  */
 #undef HAVE_ACCESS
 
+/* Define if you have the backtrace function.  */
+#undef HAVE_BACKTRACE
+
+/* Define if you have the execvp function.  */
+#undef HAVE_EXECVP
+
+/* Define if you have the fork function.  */
+#undef HAVE_FORK
+
 /* Define if you have the fstat function.  */
 #undef HAVE_FSTAT
 
@@ -201,6 +214,9 @@
 /* Define if you have the open function.  */
 #undef HAVE_OPEN
 
+/* Define if you have the pipe function.  */
+#undef HAVE_PIPE
+
 /* Define if you have the pthread_mutexattr_setkind_np function.  */
 #undef HAVE_PTHREAD_MUTEXATTR_SETKIND_NP
 
@@ -252,6 +268,12 @@
 /* Define if you have the <dirent.h> header file.  */
 #undef HAVE_DIRENT_H
 
+/* Define if you have the <dlfcn.h> header file.  */
+#undef HAVE_DLFCN_H
+
+/* Define if you have the <execinfo.h> header file.  */
+#undef HAVE_EXECINFO_H
+
 /* Define if you have the <fcntl.h> header file.  */
 #undef HAVE_FCNTL_H
 
diff --git a/libjava/include/jvm.h b/libjava/include/jvm.h
index 3b59b8d..49fc47b 100644
--- a/libjava/include/jvm.h
+++ b/libjava/include/jvm.h
@@ -182,4 +182,8 @@ extern "C"
   jlong _Jv_remJ (jlong, jlong);
 }
 
+/* get/set the name of the running executable. */
+extern char *_Jv_ThisExecutable (void);
+extern void _Jv_ThisExecutable (const char *);
+
 #endif /* __JAVA_JVM_H__ */
diff --git a/libjava/include/name-finder.h b/libjava/include/name-finder.h
new file mode 100644
index 0000000..9a1d7df
--- /dev/null
+++ b/libjava/include/name-finder.h
@@ -0,0 +1,69 @@
+// name-finder.h - Convert addresses to names
+
+/* Copyright (C) 2000  Red Hat Inc
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+/**
+ * @author Andrew Haley <aph@cygnus.com>
+ * @date Jan 6  2000
+ */
+
+#include <gcj/cni.h>
+#include <jvm.h>
+
+#include <sys/types.h>
+
+#include <string.h>
+#include <stdio.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* _Jv_name_finder is a class wrapper around a mechanism that can
+   convert addresses of methods to their names and the names of files
+   in which they appear. */
+
+class _Jv_name_finder
+{
+public:  
+  _Jv_name_finder (char *executable);
+  ~_Jv_name_finder ()
+    {
+#if defined (HAVE_PIPE) && defined (HAVE_FORK)
+      close (f_pipe[1]);
+      fclose (b_pipe_fd);
+#endif
+    }  
+
+/* Given a pointer to a function or method, try to convert it into a
+   name and the appropriate line and source file.  The caller passes
+   the code pointer in p.
+
+   Returns false if the lookup fails.  Even if this happens, the field
+   hex will have been correctly filled in with the pointer. 
+
+   The other fields are method_name and file_name, which lookup will
+   attempt to fill appropriately.  If the lookup has failed, these
+   fields contain garbage.*/
+  bool lookup (void *p);
+
+  char method_name[1024];
+  char file_name[1024];
+  char hex[sizeof (void *) * 2 + 5];
+
+private:
+  void toHex (void *p);
+#if defined (HAVE_PIPE) && defined (HAVE_FORK)
+  int pid;
+  int f_pipe[2], b_pipe[2];
+  FILE *b_pipe_fd;
+  int error;
+#endif
+};
+