From aaf0766e9f897b2fbce053083d85cb739cb509d2 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@cygnus.com>
Date: Thu, 10 Feb 2000 20:31:48 +0000
Subject: natNativeThread.cc: New file.

	* gnu/gcj/jni/natNativeThread.cc: New file.
	* gnu/gcj/jni/NativeThread.java: New file.
	* java/lang/Thread.java (data): Now a RawData.
	* include/jvm.h (_Jv_GetCurrentJNIEnv, _Jv_SetCurrentJNIEnv):
	Declare.
	* Makefile.in: Rebuilt.
	* Makefile.am (java/lang/Thread.h): New target.
	(ordinary_java_source_files): Added NativeThread.java.
	(nat_source_files): Added natNativeThread.cc.
	* java/lang/natThread.cc: Include <jni.h>
	(struct natThread): Added `jni_env' field.
	(_Jv_GetCurrentJNIEnv): New function.
	(_Jv_SetCurrentJNIEnv): Likewise.
	(initialize_native): Initialize jni_env.
	Include RawData.h.
	* jni.cc (ThreadGroupClass): New define.
	(_Jv_JNI_InvokeFunctions): New structure.
	(JNI_GetCreatedJavaVMs): New function.
	(the_vm): New global.
	(JNI_GetDefaultJavaVMInitArgs): New function.
	Include NativeThread.h.
	(NativeThreadClass): New define.
	(_Jv_JNI_EnsureLocalCapacity): Return JNI_ERR, not -1.
	(_Jv_JNI_DestroyJavaVM): New function.
	(_Jv_JNI_AttachCurrentThread): New function.
	(_Jv_JNI_DetachCurrentThread): New function.
	(_Jv_JNI_GetEnv): New function.
	(JNI_CreateJavaVM): New function.
	(_Jv_JNI_GetJavaVM): New function.
	(_Jv_JNIFunctions): Added entry for GetJavaVM.
	* include/jni.h (JavaVMAttachArgs): New structure.
	(JNI_EDETACHED): New define.
	(JNI_EVERSION): Likewise.
	(JavaVM): Define properly.
	(struct JNIInvokeInterface): New structure.
	(class _Jv_JavaVM): New class.
	(JNI_OnLoad, JNI_OnUnload): Declare.
	(JNI_GetDefaultJavaVMInitArgs, JNI_CreateJavaVM,
	JNI_GetCreatedJavaVMs): Declare.
	(JavaVMInitArgs): New typedef.
	(JavaVMOption): Likewise.
	(JNI_ERR): New define.
	(JNI_OK): Likewise.

From-SVN: r31901
---
 libjava/java/lang/Thread.java  | 11 +++++------
 libjava/java/lang/natThread.cc | 30 ++++++++++++++++++++++++++++--
 2 files changed, 33 insertions(+), 8 deletions(-)

(limited to 'libjava/java/lang')

diff --git a/libjava/java/lang/Thread.java b/libjava/java/lang/Thread.java
index 3492167..7dbabcf 100644
--- a/libjava/java/lang/Thread.java
+++ b/libjava/java/lang/Thread.java
@@ -1,6 +1,6 @@
 // Thread.java - Thread class.
 
-/* Copyright (C) 1998, 1999  Red Hat, Inc.
+/* Copyright (C) 1998, 1999, 2000  Red Hat, Inc.
 
    This file is part of libgcj.
 
@@ -10,6 +10,8 @@ details.  */
 
 package java.lang;
 
+import gnu.gcj.RawData;
+
 /**
  * @author Tom Tromey <tromey@cygnus.com>
  * @date August 24, 1998 
@@ -297,11 +299,8 @@ public class Thread implements Runnable
   private boolean interrupt_flag;
   private boolean alive_flag;
 
-  // This is a bit odd.  We need a way to represent some data that is
-  // manipulated only by the native side of this class.  We represent
-  // it as a Java object reference.  However, it is not actually a
-  // Java object.
-  private Object data;
+  // Our native data.
+  private RawData data;
 
   // Next thread number to assign.
   private static int nextThreadNumber = 0;
diff --git a/libjava/java/lang/natThread.cc b/libjava/java/lang/natThread.cc
index 6870f02..741f2b5 100644
--- a/libjava/java/lang/natThread.cc
+++ b/libjava/java/lang/natThread.cc
@@ -1,6 +1,6 @@
 // natThread.cc - Native part of Thread class.
 
-/* Copyright (C) 1998, 1999  Red Hat, Inc.
+/* Copyright (C) 1998, 1999, 2000  Red Hat, Inc.
 
    This file is part of libgcj.
 
@@ -23,6 +23,9 @@ details.  */
 #include <java/lang/IllegalThreadStateException.h>
 #include <java/lang/InterruptedException.h>
 #include <java/lang/NullPointerException.h>
+#include <gnu/gcj/RawData.h>
+
+#include <jni.h>
 
 
 
@@ -40,6 +43,9 @@ struct natThread
   // This is private data for the thread system layer.
   _Jv_Thread_t *thread;
 
+  // Each thread has its own JNI object.
+  JNIEnv *jni_env;
+
   // All threads waiting to join this thread are linked together and
   // waiting on their respective `interrupt' condition variables.
   // When this thread exits, it notifies each such thread by
@@ -83,10 +89,13 @@ java::lang::Thread::initialize_native (void)
   // own finalizer then we will need to reinitialize this structure at
   // any "interesting" point.
   natThread *nt = (natThread *) _Jv_AllocBytes (sizeof (natThread));
-  data = (jobject) nt;
+  data = reinterpret_cast<gnu::gcj::RawData *> (nt);
   _Jv_MutexInit (&nt->interrupt_mutex);
   _Jv_CondInit (&nt->interrupt_cond);
   _Jv_ThreadInitData (&nt->thread, this);
+  // FIXME: if JNI_ENV is set we will want to free it.  It is
+  // malloc()d.
+  nt->jni_env = NULL;
   nt->joiner = 0;
   nt->next = 0;
 }
@@ -324,3 +333,20 @@ java::lang::Thread::yield (void)
 {
   _Jv_ThreadYield ();
 }
+
+JNIEnv *
+_Jv_GetCurrentJNIEnv ()
+{
+  java::lang::Thread *t = _Jv_ThreadCurrent ();
+  if (t == NULL)
+    return NULL;
+  return ((natThread *) t->data)->jni_env;
+}
+
+void
+_Jv_SetCurrentJNIEnv (JNIEnv *env)
+{
+  java::lang::Thread *t = _Jv_ThreadCurrent ();
+  JvAssert (t != NULL);
+  ((natThread *) t->data)->jni_env = env;
+}
-- 
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