350
351 UNSAFE_LEAF(void, Unsafe_StoreFence(JNIEnv *env, jobject unsafe)) {
352 OrderAccess::release();
353 } UNSAFE_END
354
355 UNSAFE_LEAF(void, Unsafe_FullFence(JNIEnv *env, jobject unsafe)) {
356 OrderAccess::fence();
357 } UNSAFE_END
358
359 ////// Allocation requests
360
361 UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) {
362 ThreadToNativeFromVM ttnfv(thread);
363 return env->AllocObject(cls);
364 } UNSAFE_END
365
366 UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory0(JNIEnv *env, jobject unsafe, jlong size)) {
367 size_t sz = (size_t)size;
368
369 sz = align_up(sz, HeapWordSize);
370 void* x = os::malloc(sz, mtInternal);
371
372 return addr_to_java(x);
373 } UNSAFE_END
374
375 UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory0(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) {
376 void* p = addr_from_java(addr);
377 size_t sz = (size_t)size;
378 sz = align_up(sz, HeapWordSize);
379
380 void* x = os::realloc(p, sz, mtInternal);
381
382 return addr_to_java(x);
383 } UNSAFE_END
384
385 UNSAFE_ENTRY(void, Unsafe_FreeMemory0(JNIEnv *env, jobject unsafe, jlong addr)) {
386 void* p = addr_from_java(addr);
387
388 os::free(p);
389 } UNSAFE_END
390
391 UNSAFE_ENTRY(void, Unsafe_SetMemory0(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) {
392 size_t sz = (size_t)size;
393
394 oop base = JNIHandles::resolve(obj);
395 void* p = index_oop_from_field_offset_long(base, offset);
396
397 Copy::fill_to_memory_atomic(p, sz, value);
398 } UNSAFE_END
399
400 UNSAFE_ENTRY(void, Unsafe_CopyMemory0(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) {
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350
351 UNSAFE_LEAF(void, Unsafe_StoreFence(JNIEnv *env, jobject unsafe)) {
352 OrderAccess::release();
353 } UNSAFE_END
354
355 UNSAFE_LEAF(void, Unsafe_FullFence(JNIEnv *env, jobject unsafe)) {
356 OrderAccess::fence();
357 } UNSAFE_END
358
359 ////// Allocation requests
360
361 UNSAFE_ENTRY(jobject, Unsafe_AllocateInstance(JNIEnv *env, jobject unsafe, jclass cls)) {
362 ThreadToNativeFromVM ttnfv(thread);
363 return env->AllocObject(cls);
364 } UNSAFE_END
365
366 UNSAFE_ENTRY(jlong, Unsafe_AllocateMemory0(JNIEnv *env, jobject unsafe, jlong size)) {
367 size_t sz = (size_t)size;
368
369 sz = align_up(sz, HeapWordSize);
370 void* x = os::malloc(sz, mtOther);
371
372 return addr_to_java(x);
373 } UNSAFE_END
374
375 UNSAFE_ENTRY(jlong, Unsafe_ReallocateMemory0(JNIEnv *env, jobject unsafe, jlong addr, jlong size)) {
376 void* p = addr_from_java(addr);
377 size_t sz = (size_t)size;
378 sz = align_up(sz, HeapWordSize);
379
380 void* x = os::realloc(p, sz, mtOther);
381
382 return addr_to_java(x);
383 } UNSAFE_END
384
385 UNSAFE_ENTRY(void, Unsafe_FreeMemory0(JNIEnv *env, jobject unsafe, jlong addr)) {
386 void* p = addr_from_java(addr);
387
388 os::free(p);
389 } UNSAFE_END
390
391 UNSAFE_ENTRY(void, Unsafe_SetMemory0(JNIEnv *env, jobject unsafe, jobject obj, jlong offset, jlong size, jbyte value)) {
392 size_t sz = (size_t)size;
393
394 oop base = JNIHandles::resolve(obj);
395 void* p = index_oop_from_field_offset_long(base, offset);
396
397 Copy::fill_to_memory_atomic(p, sz, value);
398 } UNSAFE_END
399
400 UNSAFE_ENTRY(void, Unsafe_CopyMemory0(JNIEnv *env, jobject unsafe, jobject srcObj, jlong srcOffset, jobject dstObj, jlong dstOffset, jlong size)) {
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