src/share/vm/memory/gcLocker.hpp
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@@ -52,39 +52,31 @@
// currently in a critical region. It's only kept up to date when
// _needs_gc is true. The current value is computed during
// safepointing and decremented during the slow path of GC_locker
// unlocking.
static volatile jint _jni_lock_count; // number of jni active instances.
-
- static volatile jint _lock_count; // number of other active instances
static volatile bool _needs_gc; // heap is filling, we need a GC
// note: bool is typedef'd as jint
static volatile bool _doing_gc; // unlock_critical() is doing a GC
#ifdef ASSERT
// This lock count is updated for all operations and is used to
// validate the jni_lock_count that is computed during safepoints.
static volatile jint _debug_jni_lock_count;
#endif
- // Accessors
- static bool is_jni_active() {
- assert(_needs_gc, "only valid when _needs_gc is set");
- return _jni_lock_count > 0;
- }
-
// At a safepoint, visit all threads and count the number of active
// critical sections. This is used to ensure that all active
// critical sections are exited before a new one is started.
static void verify_critical_count() NOT_DEBUG_RETURN;
static void jni_lock(JavaThread* thread);
static void jni_unlock(JavaThread* thread);
static bool is_active_internal() {
verify_critical_count();
- return _lock_count > 0 || _jni_lock_count > 0;
+ return _jni_lock_count > 0;
}
public:
// Accessors
static bool is_active() {
@@ -130,14 +122,10 @@
// JNICritical_lock, so the caller may not safely assert upon
// return from this method that "!needs_gc()" since that is
// not a stable predicate.
static void stall_until_clear();
- // Non-structured GC locking: currently needed for JNI. Use with care!
- static void lock();
- static void unlock();
-
// The following two methods are used for JNI critical regions.
// If we find that we failed to perform a GC because the GC_locker
// was active, arrange for one as soon as possible by allowing
// all threads in critical regions to complete, but not allowing
// other critical regions to be entered. The reasons for that are: