< prev index next >
src/hotspot/share/runtime/jniHandles.cpp
Print this page
@@ -45,10 +45,11 @@
if (obj == NULL) {
return NULL; // ignore null handles
} else {
Thread* thread = Thread::current();
assert(Universe::heap()->is_in_reserved(obj), "sanity check");
+ assert(!current_thread_in_native(), "must not be in native");
return thread->active_handles()->allocate_handle(obj);
}
}
@@ -57,10 +58,12 @@
jobject JNIHandles::make_local(Thread* thread, oop obj) {
if (obj == NULL) {
return NULL; // ignore null handles
} else {
assert(Universe::heap()->is_in_reserved(obj), "sanity check");
+ assert(thread->is_Java_thread(), "not a Java thread");
+ assert(!current_thread_in_native(), "must not be in native");
return thread->active_handles()->allocate_handle(obj);
}
}
@@ -68,17 +71,19 @@
if (obj == NULL) {
return NULL; // ignore null handles
} else {
JavaThread* thread = JavaThread::thread_from_jni_environment(env);
assert(Universe::heap()->is_in_reserved(obj), "sanity check");
+ assert(!current_thread_in_native(), "must not be in native");
return thread->active_handles()->allocate_handle(obj);
}
}
jobject JNIHandles::make_global(Handle obj) {
assert(!Universe::heap()->is_gc_active(), "can't extend the root set during GC");
+ assert(!current_thread_in_native(), "must not be in native");
jobject res = NULL;
if (!obj.is_null()) {
// ignore null handles
MutexLocker ml(JNIGlobalHandle_lock);
assert(Universe::heap()->is_in_reserved(obj()), "sanity check");
@@ -91,10 +96,11 @@
}
jobject JNIHandles::make_weak_global(Handle obj) {
assert(!Universe::heap()->is_gc_active(), "can't extend the root set during GC");
+ assert(!current_thread_in_native(), "must not be in native");
jobject res = NULL;
if (!obj.is_null()) {
// ignore null handles
{
MutexLocker ml(JNIGlobalHandle_lock);
@@ -263,10 +269,17 @@
oops_do(&verify_handle);
weak_oops_do(&verify_handle);
}
+// This method is implemented here to avoid circular includes between
+// jniHandles.hpp and thread.hpp.
+bool JNIHandles::current_thread_in_native() {
+ Thread* thread = Thread::current();
+ return (thread->is_Java_thread() &&
+ JavaThread::current()->thread_state() == _thread_in_native);
+}
void jni_handles_init() {
JNIHandles::initialize();
}
< prev index next >