886
887 // let caller initialize it as needed...
888
889 return (jclass) res_jh;
890 } UNSAFE_END
891
892
893
894 UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) {
895 ThreadToNativeFromVM ttnfv(thread);
896 env->Throw(thr);
897 } UNSAFE_END
898
899 // JSR166 ------------------------------------------------------------------
900
901 UNSAFE_ENTRY(jobject, Unsafe_CompareAndExchangeReference(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) {
902 oop x = JNIHandles::resolve(x_h);
903 oop e = JNIHandles::resolve(e_h);
904 oop p = JNIHandles::resolve(obj);
905 assert_field_offset_sane(p, offset);
906 oop res = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e);
907 return JNIHandles::make_local(env, res);
908 } UNSAFE_END
909
910 UNSAFE_ENTRY(jint, Unsafe_CompareAndExchangeInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) {
911 oop p = JNIHandles::resolve(obj);
912 if (p == NULL) {
913 volatile jint* addr = (volatile jint*)index_oop_from_field_offset_long(p, offset);
914 return RawAccess<>::atomic_cmpxchg(x, addr, e);
915 } else {
916 assert_field_offset_sane(p, offset);
917 return HeapAccess<>::atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e);
918 }
919 } UNSAFE_END
920
921 UNSAFE_ENTRY(jlong, Unsafe_CompareAndExchangeLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) {
922 oop p = JNIHandles::resolve(obj);
923 if (p == NULL) {
924 volatile jlong* addr = (volatile jlong*)index_oop_from_field_offset_long(p, offset);
925 return RawAccess<>::atomic_cmpxchg(x, addr, e);
926 } else {
927 assert_field_offset_sane(p, offset);
928 return HeapAccess<>::atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e);
929 }
930 } UNSAFE_END
931
932 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetReference(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) {
933 oop x = JNIHandles::resolve(x_h);
934 oop e = JNIHandles::resolve(e_h);
935 oop p = JNIHandles::resolve(obj);
936 assert_field_offset_sane(p, offset);
937 oop ret = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e);
938 return ret == e;
939 } UNSAFE_END
940
941 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) {
942 oop p = JNIHandles::resolve(obj);
943 if (p == NULL) {
944 volatile jint* addr = (volatile jint*)index_oop_from_field_offset_long(p, offset);
945 return RawAccess<>::atomic_cmpxchg(x, addr, e) == e;
946 } else {
947 assert_field_offset_sane(p, offset);
948 return HeapAccess<>::atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e) == e;
949 }
950 } UNSAFE_END
951
952 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) {
953 oop p = JNIHandles::resolve(obj);
954 if (p == NULL) {
955 volatile jlong* addr = (volatile jlong*)index_oop_from_field_offset_long(p, offset);
956 return RawAccess<>::atomic_cmpxchg(x, addr, e) == e;
957 } else {
958 assert_field_offset_sane(p, offset);
959 return HeapAccess<>::atomic_cmpxchg_at(x, p, (ptrdiff_t)offset, e) == e;
960 }
961 } UNSAFE_END
962
963 static void post_thread_park_event(EventThreadPark* event, const oop obj, jlong timeout_nanos, jlong until_epoch_millis) {
964 assert(event != NULL, "invariant");
965 assert(event->should_commit(), "invariant");
966 event->set_parkedClass((obj != NULL) ? obj->klass() : NULL);
967 event->set_timeout(timeout_nanos);
968 event->set_until(until_epoch_millis);
969 event->set_address((obj != NULL) ? (u8)cast_from_oop<uintptr_t>(obj) : 0);
970 event->commit();
971 }
972
973 UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) {
974 HOTSPOT_THREAD_PARK_BEGIN((uintptr_t) thread->parker(), (int) isAbsolute, time);
975 EventThreadPark event;
976
977 JavaThreadParkedState jtps(thread, time != 0);
978 thread->parker()->park(isAbsolute != 0, time);
979 if (event.should_commit()) {
|
886
887 // let caller initialize it as needed...
888
889 return (jclass) res_jh;
890 } UNSAFE_END
891
892
893
894 UNSAFE_ENTRY(void, Unsafe_ThrowException(JNIEnv *env, jobject unsafe, jthrowable thr)) {
895 ThreadToNativeFromVM ttnfv(thread);
896 env->Throw(thr);
897 } UNSAFE_END
898
899 // JSR166 ------------------------------------------------------------------
900
901 UNSAFE_ENTRY(jobject, Unsafe_CompareAndExchangeReference(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) {
902 oop x = JNIHandles::resolve(x_h);
903 oop e = JNIHandles::resolve(e_h);
904 oop p = JNIHandles::resolve(obj);
905 assert_field_offset_sane(p, offset);
906 oop res = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x);
907 return JNIHandles::make_local(env, res);
908 } UNSAFE_END
909
910 UNSAFE_ENTRY(jint, Unsafe_CompareAndExchangeInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) {
911 oop p = JNIHandles::resolve(obj);
912 if (p == NULL) {
913 volatile jint* addr = (volatile jint*)index_oop_from_field_offset_long(p, offset);
914 return RawAccess<>::atomic_cmpxchg(addr, e, x);
915 } else {
916 assert_field_offset_sane(p, offset);
917 return HeapAccess<>::atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x);
918 }
919 } UNSAFE_END
920
921 UNSAFE_ENTRY(jlong, Unsafe_CompareAndExchangeLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) {
922 oop p = JNIHandles::resolve(obj);
923 if (p == NULL) {
924 volatile jlong* addr = (volatile jlong*)index_oop_from_field_offset_long(p, offset);
925 return RawAccess<>::atomic_cmpxchg(addr, e, x);
926 } else {
927 assert_field_offset_sane(p, offset);
928 return HeapAccess<>::atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x);
929 }
930 } UNSAFE_END
931
932 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetReference(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jobject e_h, jobject x_h)) {
933 oop x = JNIHandles::resolve(x_h);
934 oop e = JNIHandles::resolve(e_h);
935 oop p = JNIHandles::resolve(obj);
936 assert_field_offset_sane(p, offset);
937 oop ret = HeapAccess<ON_UNKNOWN_OOP_REF>::oop_atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x);
938 return ret == e;
939 } UNSAFE_END
940
941 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetInt(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jint e, jint x)) {
942 oop p = JNIHandles::resolve(obj);
943 if (p == NULL) {
944 volatile jint* addr = (volatile jint*)index_oop_from_field_offset_long(p, offset);
945 return RawAccess<>::atomic_cmpxchg(addr, e, x) == e;
946 } else {
947 assert_field_offset_sane(p, offset);
948 return HeapAccess<>::atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x) == e;
949 }
950 } UNSAFE_END
951
952 UNSAFE_ENTRY(jboolean, Unsafe_CompareAndSetLong(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong e, jlong x)) {
953 oop p = JNIHandles::resolve(obj);
954 if (p == NULL) {
955 volatile jlong* addr = (volatile jlong*)index_oop_from_field_offset_long(p, offset);
956 return RawAccess<>::atomic_cmpxchg(addr, e, x) == e;
957 } else {
958 assert_field_offset_sane(p, offset);
959 return HeapAccess<>::atomic_cmpxchg_at(p, (ptrdiff_t)offset, e, x) == e;
960 }
961 } UNSAFE_END
962
963 static void post_thread_park_event(EventThreadPark* event, const oop obj, jlong timeout_nanos, jlong until_epoch_millis) {
964 assert(event != NULL, "invariant");
965 assert(event->should_commit(), "invariant");
966 event->set_parkedClass((obj != NULL) ? obj->klass() : NULL);
967 event->set_timeout(timeout_nanos);
968 event->set_until(until_epoch_millis);
969 event->set_address((obj != NULL) ? (u8)cast_from_oop<uintptr_t>(obj) : 0);
970 event->commit();
971 }
972
973 UNSAFE_ENTRY(void, Unsafe_Park(JNIEnv *env, jobject unsafe, jboolean isAbsolute, jlong time)) {
974 HOTSPOT_THREAD_PARK_BEGIN((uintptr_t) thread->parker(), (int) isAbsolute, time);
975 EventThreadPark event;
976
977 JavaThreadParkedState jtps(thread, time != 0);
978 thread->parker()->park(isAbsolute != 0, time);
979 if (event.should_commit()) {
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