From 3fd64b5a09de7b7128482bb764c9250b474ac78f Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@cygnus.com>
Date: Tue, 8 Feb 2000 00:26:58 +0000
Subject: Runtime.java (_load): Declare.

	* java/lang/Runtime.java (_load): Declare.
	(load, loadLibrary): Wrote in terms of _load.
	* java/lang/natRuntime.cc (load): Call JNI_OnLoad if it appears in
	library.
	(loadLibrary): Likewise.
	Include <jni.h>.
	(_load): New method.
	(loadLibrary, load): Removed.

From-SVN: r31846
---
 libjava/java/lang/natRuntime.cc | 40 ++++++++++++++++------------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

(limited to 'libjava/java/lang/natRuntime.cc')

diff --git a/libjava/java/lang/natRuntime.cc b/libjava/java/lang/natRuntime.cc
index dd8b0d0..d391ff4 100644
--- a/libjava/java/lang/natRuntime.cc
+++ b/libjava/java/lang/natRuntime.cc
@@ -18,6 +18,8 @@ details.  */
 #include <java/lang/UnknownError.h>
 #include <java/lang/UnsatisfiedLinkError.h>
 
+#include <jni.h>
+
 #ifdef USE_LTDL
 #include <ltdl.h>
 
@@ -99,7 +101,7 @@ java::lang::Runtime::gc (void)
 }
 
 void
-java::lang::Runtime::load (jstring path)
+java::lang::Runtime::_load (jstring path, jboolean do_search)
 {
   JvSynchronize sync (this);
   checkLink (path);
@@ -110,39 +112,29 @@ java::lang::Runtime::load (jstring path)
   jsize total = JvGetStringUTFRegion (path, 0, path->length(), buf);
   buf[total] = '\0';
   // FIXME: make sure path is absolute.
-  lt_dlhandle h = lt_dlopen (buf);
+  lt_dlhandle h = do_search ? lt_dlopenext (buf) : lt_dlopen (buf);
   if (h == NULL)
     {
       const char *msg = lt_dlerror ();
       _Jv_Throw (new UnsatisfiedLinkError (JvNewStringLatin1 (msg)));
     }
-#else
-  _Jv_Throw (new UnknownError
-	     (JvNewStringLatin1 ("Runtime.load not implemented")));
-#endif /* USE_LTDL */
-}
 
-void
-java::lang::Runtime::loadLibrary (jstring lib)
-{
-  JvSynchronize sync (this);
-  checkLink (lib);
-  using namespace java::lang;
-#ifdef USE_LTDL
-  jint len = _Jv_GetStringUTFLength (lib);
-  char buf[len + 1];
-  jsize total = JvGetStringUTFRegion (lib, 0, lib->length(), buf);
-  buf[total] = '\0';
-  // FIXME: make sure path is absolute.
-  lt_dlhandle h = lt_dlopenext (buf);
-  if (h == NULL)
+  void *onload = lt_dlsym (h, "JNI_OnLoad");
+  if (onload != NULL)
     {
-      const char *msg = lt_dlerror ();
-      _Jv_Throw (new UnsatisfiedLinkError (JvNewStringLatin1 (msg)));
+      // FIXME: need invocation API to get JavaVM.
+      jint vers = ((jint (*) (...)) onload) (NULL, NULL);
+      if (vers != JNI_VERSION_1_1 && vers != JNI_VERSION_1_2)
+	{
+	  // FIXME: unload the library.
+	  _Jv_Throw (new UnsatisfiedLinkError (JvNewStringLatin1 ("unrecognized version from JNI_OnLoad")));
+	}
     }
 #else
   _Jv_Throw (new UnknownError
-	     (JvNewStringLatin1 ("Runtime.loadLibrary not implemented")));
+	     (JvNewStringLatin1 (do_search
+				 ? "Runtime.loadLibrary not implemented"
+				 : "Runtime.load not implemented")));
 #endif /* USE_LTDL */
 }
 
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