1 files changed, 73 insertions, 0 deletions
diff --git a/libjava/java/lang/natVMThrowable.cc b/libjava/java/lang/natVMThrowable.cc
new file mode 100644
index 0000000..358bab7
--- /dev/null
+++ b/libjava/java/lang/natVMThrowable.cc
@@ -0,0 +1,73 @@
+// natVMThrowable.cc - native helper methods for Throwable
+
+/* Copyright (C) 2000, 2002  Free Software Foundation, 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>
+ * @author Mark Wielaard <mark@klomp.org>
+ *
+ * Native helper methods for VM specific Throwable support.
+ */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <jvm.h>
+#include <gcj/cni.h>
+#include <gnu/gcj/RawData.h>
+#include <java/lang/Object.h>
+#include <java-threads.h>
+#include <java/lang/Throwable.h>
+#include <java/lang/VMThrowable.h>
+
+#include <sys/types.h>
+
+#include <stdlib.h>
+
+#include <unistd.h>
+
+#ifdef HAVE_EXECINFO_H
+#include <execinfo.h>
+#endif
+
+/* FIXME: size of the stack trace is limited to 128 elements.  It's
+   undoubtedly sensible to limit the stack trace, but 128 is rather
+   arbitrary.  It may be better to configure this.  */
+
+java::lang::VMThrowable *
+java::lang::VMThrowable::fillInStackTrace (java::lang::Throwable* t)
+{
+  if (! trace_enabled)
+    return NULL;
+#if defined (HAVE_BACKTRACE)
+  VMThrowable* state = new VMThrowable;
+  void *p[128];
+  
+  // We subtract 1 from the number of elements because we don't want
+  // to include the calls to fillInStackTrace in the trace.
+  int n = backtrace (p, 128) - 1;  
+
+  void **addrs;
+  if (n > 0)
+    {
+      state->length = n;
+      addrs = (void **) _Jv_Malloc (n * sizeof p[0]);
+      while (n--)
+	addrs[n] = p[n];
+    }
+  else
+    addrs = NULL;
+
+  state->stackTraceAddrs = reinterpret_cast<gnu::gcj::RawData *> (addrs);
+
+  return state;
+#endif
+  return NULL;
+}