mgerdin@3619: /*
hseigel@4987:  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
mgerdin@3619:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mgerdin@3619:  *
mgerdin@3619:  * This code is free software; you can redistribute it and/or modify it
mgerdin@3619:  * under the terms of the GNU General Public License version 2 only, as
mgerdin@3619:  * published by the Free Software Foundation.
mgerdin@3619:  *
mgerdin@3619:  * This code is distributed in the hope that it will be useful, but WITHOUT
mgerdin@3619:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mgerdin@3619:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mgerdin@3619:  * version 2 for more details (a copy is included in the LICENSE file that
mgerdin@3619:  * accompanied this code).
mgerdin@3619:  *
mgerdin@3619:  * You should have received a copy of the GNU General Public License version
mgerdin@3619:  * 2 along with this work; if not, write to the Free Software Foundation,
mgerdin@3619:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mgerdin@3619:  *
mgerdin@3619:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mgerdin@3619:  * or visit www.oracle.com if you need additional information or have any
mgerdin@3619:  * questions.
mgerdin@3619:  *
mgerdin@3619:  */
mgerdin@3619: 
mgerdin@3619: #include "precompiled.hpp"
mgerdin@3619: 
mgerdin@3619: #include "memory/universe.hpp"
mgerdin@3619: #include "oops/oop.inline.hpp"
nloodin@3681: 
nloodin@3681: #include "classfile/symbolTable.hpp"
coleenp@4037: #include "classfile/classLoaderData.hpp"
nloodin@3681: 
mgerdin@3619: #include "prims/whitebox.hpp"
nloodin@3681: #include "prims/wbtestmethods/parserTests.hpp"
nloodin@3681: 
tschatzl@5701: #include "runtime/arguments.hpp"
mgerdin@3619: #include "runtime/interfaceSupport.hpp"
mgerdin@3619: #include "runtime/os.hpp"
mgerdin@3619: #include "utilities/debug.hpp"
jprovino@4542: #include "utilities/macros.hpp"
mikael@5174: #include "utilities/exceptions.hpp"
mgerdin@3619: 
jprovino@4542: #if INCLUDE_ALL_GCS
mgerdin@3619: #include "gc_implementation/g1/concurrentMark.hpp"
mgerdin@3619: #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
mgerdin@3619: #include "gc_implementation/g1/heapRegionRemSet.hpp"
jprovino@4542: #endif // INCLUDE_ALL_GCS
mgerdin@3619: 
ctornqvi@4512: #ifdef INCLUDE_NMT
ctornqvi@4512: #include "services/memTracker.hpp"
ctornqvi@4512: #endif // INCLUDE_NMT
ctornqvi@4512: 
iignatyev@4592: #include "compiler/compileBroker.hpp"
iignatyev@4908: #include "runtime/compilationPolicy.hpp"
iignatyev@4592: 
mgerdin@6078: #define SIZE_T_MAX_VALUE ((size_t) -1)
mgerdin@6078: 
mgerdin@3619: bool WhiteBox::_used = false;
mgerdin@3619: 
mgerdin@3619: WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj))
mgerdin@3619:   return (jlong)(void*)JNIHandles::resolve(obj);
mgerdin@3619: WB_END
mgerdin@3619: 
mgerdin@3619: WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o))
mgerdin@3619:   return heapOopSize;
mgerdin@3619: WB_END
mgerdin@3619: 
coleenp@4037: 
coleenp@4037: class WBIsKlassAliveClosure : public KlassClosure {
coleenp@4037:     Symbol* _name;
coleenp@4037:     bool _found;
coleenp@4037: public:
coleenp@4037:     WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
coleenp@4037: 
coleenp@4037:     void do_klass(Klass* k) {
coleenp@4037:       if (_found) return;
coleenp@4037:       Symbol* ksym = k->name();
coleenp@4037:       if (ksym->fast_compare(_name) == 0) {
coleenp@4037:         _found = true;
coleenp@4037:       }
coleenp@4037:     }
coleenp@4037: 
coleenp@4037:     bool found() const {
coleenp@4037:         return _found;
coleenp@4037:     }
coleenp@4037: };
coleenp@4037: 
coleenp@4037: WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
coleenp@4037:   Handle h_name = JNIHandles::resolve(name);
coleenp@4037:   if (h_name.is_null()) return false;
coleenp@4037:   Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
coleenp@4037:   TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
coleenp@4037: 
coleenp@4037:   WBIsKlassAliveClosure closure(sym);
coleenp@4037:   ClassLoaderDataGraph::classes_do(&closure);
coleenp@4037: 
coleenp@4037:   return closure.found();
coleenp@4037: WB_END
coleenp@4037: 
tschatzl@5701: WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
tschatzl@5701:   return (jlong)Arguments::max_heap_for_compressed_oops();
tschatzl@5701: }
tschatzl@5701: WB_END
tschatzl@5701: 
tschatzl@5073: WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
tschatzl@5073:   CollectorPolicy * p = Universe::heap()->collector_policy();
tschatzl@5073:   gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
tschatzl@5073:     SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
tschatzl@5073:     p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
jwilhelm@6085:     p->space_alignment(), p->heap_alignment());
tschatzl@5073: }
tschatzl@5073: WB_END
tschatzl@5073: 
mgerdin@6078: #ifndef PRODUCT
mgerdin@6078: // Forward declaration
mgerdin@6078: void TestReservedSpace_test();
mgerdin@6078: void TestReserveMemorySpecial_test();
mgerdin@6078: void TestVirtualSpace_test();
mgerdin@6078: void TestMetaspaceAux_test();
mgerdin@6078: #endif
mgerdin@6078: 
mgerdin@6078: WB_ENTRY(void, WB_RunMemoryUnitTests(JNIEnv* env, jobject o))
mgerdin@6078: #ifndef PRODUCT
mgerdin@6078:   TestReservedSpace_test();
mgerdin@6078:   TestReserveMemorySpecial_test();
mgerdin@6078:   TestVirtualSpace_test();
mgerdin@6078:   TestMetaspaceAux_test();
mgerdin@6078: #endif
mgerdin@6078: WB_END
mgerdin@6078: 
mgerdin@6078: WB_ENTRY(void, WB_ReadFromNoaccessArea(JNIEnv* env, jobject o))
mgerdin@6078:   size_t granularity = os::vm_allocation_granularity();
mgerdin@6078:   ReservedHeapSpace rhs(100 * granularity, granularity, false, NULL);
mgerdin@6078:   VirtualSpace vs;
mgerdin@6078:   vs.initialize(rhs, 50 * granularity);
mgerdin@6078: 
mgerdin@6078:   //Check if constraints are complied
mgerdin@6078:   if (!( UseCompressedOops && rhs.base() != NULL &&
mgerdin@6078:          Universe::narrow_oop_base() != NULL &&
mgerdin@6078:          Universe::narrow_oop_use_implicit_null_checks() )) {
mgerdin@6078:     tty->print_cr("WB_ReadFromNoaccessArea method is useless:\n "
mgerdin@6078:                   "\tUseCompressedOops is %d\n"
mgerdin@6078:                   "\trhs.base() is "PTR_FORMAT"\n"
mgerdin@6078:                   "\tUniverse::narrow_oop_base() is "PTR_FORMAT"\n"
mgerdin@6078:                   "\tUniverse::narrow_oop_use_implicit_null_checks() is %d",
mgerdin@6078:                   UseCompressedOops,
mgerdin@6078:                   rhs.base(),
mgerdin@6078:                   Universe::narrow_oop_base(),
mgerdin@6078:                   Universe::narrow_oop_use_implicit_null_checks());
mgerdin@6078:     return;
mgerdin@6078:   }
mgerdin@6078:   tty->print_cr("Reading from no access area... ");
mgerdin@6078:   tty->print_cr("*(vs.low_boundary() - rhs.noaccess_prefix() / 2 ) = %c",
mgerdin@6078:                 *(vs.low_boundary() - rhs.noaccess_prefix() / 2 ));
mgerdin@6078: WB_END
mgerdin@6078: 
mgerdin@6078: static jint wb_stress_virtual_space_resize(size_t reserved_space_size,
mgerdin@6078:                                            size_t magnitude, size_t iterations) {
mgerdin@6078:   size_t granularity = os::vm_allocation_granularity();
mgerdin@6078:   ReservedHeapSpace rhs(reserved_space_size * granularity, granularity, false, NULL);
mgerdin@6078:   VirtualSpace vs;
mgerdin@6078:   if (!vs.initialize(rhs, 0)) {
mgerdin@6078:     tty->print_cr("Failed to initialize VirtualSpace. Can't proceed.");
mgerdin@6078:     return 3;
mgerdin@6078:   }
mgerdin@6078: 
mgerdin@6078:   long seed = os::random();
mgerdin@6078:   tty->print_cr("Random seed is %ld", seed);
mgerdin@6078:   os::init_random(seed);
mgerdin@6078: 
mgerdin@6078:   for (size_t i = 0; i < iterations; i++) {
mgerdin@6078: 
mgerdin@6078:     // Whether we will shrink or grow
mgerdin@6078:     bool shrink = os::random() % 2L == 0;
mgerdin@6078: 
mgerdin@6078:     // Get random delta to resize virtual space
mgerdin@6078:     size_t delta = (size_t)os::random() % magnitude;
mgerdin@6078: 
mgerdin@6078:     // If we are about to shrink virtual space below zero, then expand instead
mgerdin@6078:     if (shrink && vs.committed_size() < delta) {
mgerdin@6078:       shrink = false;
mgerdin@6078:     }
mgerdin@6078: 
mgerdin@6078:     // Resizing by delta
mgerdin@6078:     if (shrink) {
mgerdin@6078:       vs.shrink_by(delta);
mgerdin@6078:     } else {
mgerdin@6078:       // If expanding fails expand_by will silently return false
mgerdin@6078:       vs.expand_by(delta, true);
mgerdin@6078:     }
mgerdin@6078:   }
mgerdin@6078:   return 0;
mgerdin@6078: }
mgerdin@6078: 
mgerdin@6078: WB_ENTRY(jint, WB_StressVirtualSpaceResize(JNIEnv* env, jobject o,
mgerdin@6078:         jlong reserved_space_size, jlong magnitude, jlong iterations))
mgerdin@6078:   tty->print_cr("reservedSpaceSize="JLONG_FORMAT", magnitude="JLONG_FORMAT", "
mgerdin@6078:                 "iterations="JLONG_FORMAT"\n", reserved_space_size, magnitude,
mgerdin@6078:                 iterations);
mgerdin@6078:   if (reserved_space_size < 0 || magnitude < 0 || iterations < 0) {
mgerdin@6078:     tty->print_cr("One of variables printed above is negative. Can't proceed.\n");
mgerdin@6078:     return 1;
mgerdin@6078:   }
mgerdin@6078: 
mgerdin@6078:   // sizeof(size_t) depends on whether OS is 32bit or 64bit. sizeof(jlong) is
mgerdin@6078:   // always 8 byte. That's why we should avoid overflow in case of 32bit platform.
mgerdin@6078:   if (sizeof(size_t) < sizeof(jlong)) {
mgerdin@6078:     jlong size_t_max_value = (jlong) SIZE_T_MAX_VALUE;
mgerdin@6078:     if (reserved_space_size > size_t_max_value || magnitude > size_t_max_value
mgerdin@6078:         || iterations > size_t_max_value) {
mgerdin@6078:       tty->print_cr("One of variables printed above overflows size_t. Can't proceed.\n");
mgerdin@6078:       return 2;
mgerdin@6078:     }
mgerdin@6078:   }
mgerdin@6078: 
mgerdin@6078:   return wb_stress_virtual_space_resize((size_t) reserved_space_size,
mgerdin@6078:                                         (size_t) magnitude, (size_t) iterations);
mgerdin@6078: WB_END
mgerdin@6078: 
jprovino@4542: #if INCLUDE_ALL_GCS
mgerdin@3619: WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
mgerdin@3619:   G1CollectedHeap* g1 = G1CollectedHeap::heap();
mgerdin@3619:   oop result = JNIHandles::resolve(obj);
mgerdin@3619:   const HeapRegion* hr = g1->heap_region_containing(result);
mgerdin@3619:   return hr->isHumongous();
mgerdin@3619: WB_END
mgerdin@3619: 
mgerdin@3619: WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
mgerdin@3619:   G1CollectedHeap* g1 = G1CollectedHeap::heap();
mgerdin@3619:   size_t nr = g1->free_regions();
mgerdin@3619:   return (jlong)nr;
mgerdin@3619: WB_END
mgerdin@3619: 
mgerdin@3619: WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o))
mgerdin@3619:   G1CollectedHeap* g1 = G1CollectedHeap::heap();
mgerdin@3619:   ConcurrentMark* cm = g1->concurrent_mark();
mgerdin@3619:   return cm->concurrent_marking_in_progress();
mgerdin@3619: WB_END
mgerdin@3619: 
mgerdin@3619: WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o))
mgerdin@3619:   return (jint)HeapRegion::GrainBytes;
mgerdin@3619: WB_END
jprovino@4542: #endif // INCLUDE_ALL_GCS
mgerdin@3619: 
cjplummer@5586: #if INCLUDE_NMT
ctornqvi@4512: // Alloc memory using the test memory type so that we can use that to see if
ctornqvi@4512: // NMT picks it up correctly
ctornqvi@4885: WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size))
ctornqvi@4885:   jlong addr = 0;
ctornqvi@4512: 
ctornqvi@4885:   if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
ctornqvi@4885:     addr = (jlong)(uintptr_t)os::malloc(size, mtTest);
ctornqvi@4512:   }
ctornqvi@4512: 
ctornqvi@4885:   return addr;
ctornqvi@4512: WB_END
ctornqvi@4512: 
ctornqvi@4512: // Free the memory allocated by NMTAllocTest
ctornqvi@4885: WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem))
ctornqvi@4885:   os::free((void*)(uintptr_t)mem, mtTest);
ctornqvi@4885: WB_END
ctornqvi@4512: 
ctornqvi@4885: WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size))
ctornqvi@4885:   jlong addr = 0;
ctornqvi@4885: 
ctornqvi@4885:   if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) {
ctornqvi@4885:     addr = (jlong)(uintptr_t)os::reserve_memory(size);
ctornqvi@4885:     MemTracker::record_virtual_memory_type((address)addr, mtTest);
ctornqvi@4512:   }
ctornqvi@4512: 
ctornqvi@4885:   return addr;
ctornqvi@4885: WB_END
ctornqvi@4512: 
ctornqvi@4885: 
ctornqvi@4885: WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
dcubed@5255:   os::commit_memory((char *)(uintptr_t)addr, size, !ExecMem);
ctornqvi@4885:   MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest);
ctornqvi@4885: WB_END
ctornqvi@4885: 
ctornqvi@4885: WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
ctornqvi@4885:   os::uncommit_memory((char *)(uintptr_t)addr, size);
ctornqvi@4885: WB_END
ctornqvi@4885: 
ctornqvi@4885: WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size))
ctornqvi@4885:   os::release_memory((char *)(uintptr_t)addr, size);
ctornqvi@4512: WB_END
ctornqvi@4512: 
ctornqvi@4512: // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature
ctornqvi@4512: WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env))
ctornqvi@4512: 
ctornqvi@4512:   if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) {
ctornqvi@4512:     return false;
ctornqvi@4512:   }
ctornqvi@4512: 
ctornqvi@4512:   return MemTracker::wbtest_wait_for_data_merge();
ctornqvi@4512: WB_END
ctornqvi@4512: 
cjplummer@5586: WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env))
cjplummer@5586:   return MemTracker::tracking_level() == MemTracker::NMT_detail;
cjplummer@5586: WB_END
cjplummer@5586: 
ctornqvi@4512: #endif // INCLUDE_NMT
ctornqvi@4512: 
iignatyev@4592: static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) {
iignatyev@4592:   assert(method != NULL, "method should not be null");
iignatyev@4592:   ThreadToNativeFromVM ttn(thread);
iignatyev@4592:   return env->FromReflectedMethod(method);
iignatyev@4592: }
iignatyev@4592: 
iignatyev@4592: WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o))
iignatyev@4592:   MutexLockerEx mu(Compile_lock);
iignatyev@4592:   CodeCache::mark_all_nmethods_for_deoptimization();
iignatyev@4592:   VM_Deoptimize op;
iignatyev@4592:   VMThread::execute(&op);
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   MutexLockerEx mu(Compile_lock);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@4592:   int result = 0;
iignatyev@5541:   nmethod* code;
iignatyev@5541:   if (is_osr) {
iignatyev@5541:     int bci = InvocationEntryBci;
iignatyev@5541:     while ((code = mh->lookup_osr_nmethod_for(bci, CompLevel_none, false)) != NULL) {
iignatyev@5541:       code->mark_for_deoptimization();
iignatyev@5541:       ++result;
iignatyev@5541:       bci = code->osr_entry_bci() + 1;
iignatyev@5541:     }
iignatyev@5541:   } else {
iignatyev@5541:     code = mh->code();
iignatyev@5541:   }
iignatyev@4592:   if (code != NULL) {
iignatyev@4592:     code->mark_for_deoptimization();
iignatyev@4592:     ++result;
iignatyev@4592:   }
iignatyev@4592:   result += CodeCache::mark_for_deoptimization(mh());
iignatyev@4592:   if (result > 0) {
iignatyev@4592:     VM_Deoptimize op;
iignatyev@4592:     VMThread::execute(&op);
iignatyev@4592:   }
iignatyev@4592:   return result;
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   MutexLockerEx mu(Compile_lock);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
iignatyev@4592:   if (code == NULL) {
iignatyev@4592:     return JNI_FALSE;
iignatyev@4592:   }
iignatyev@4592:   return (code->is_alive() && !code->is_marked_for_deoptimization());
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   MutexLockerEx mu(Compile_lock);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   if (is_osr) {
iignatyev@5541:     return CompilationPolicy::can_be_osr_compiled(mh, comp_level);
iignatyev@5541:   } else {
iignatyev@5541:     return CompilationPolicy::can_be_compiled(mh, comp_level);
iignatyev@5541:   }
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@4592: WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   MutexLockerEx mu(Compile_lock);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@4592:   return mh->queued_for_compilation();
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method, jboolean is_osr))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   nmethod* code = is_osr ? mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false) : mh->code();
iignatyev@4592:   return (code != NULL ? code->comp_level() : CompLevel_none);
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level, jboolean is_osr))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   if (is_osr) {
iignatyev@5541:     mh->set_not_osr_compilable(comp_level, true /* report */, "WhiteBox");
iignatyev@5541:   } else {
iignatyev@5541:     mh->set_not_compilable(comp_level, true /* report */, "WhiteBox");
iignatyev@5541:   }
iignatyev@5541: WB_END
iignatyev@5541: 
iignatyev@5541: WB_ENTRY(jint, WB_GetMethodEntryBci(JNIEnv* env, jobject o, jobject method))
iignatyev@5541:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@5541:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   nmethod* code = mh->lookup_osr_nmethod_for(InvocationEntryBci, CompLevel_none, false);
iignatyev@5541:   return (code != NULL && code->is_osr_method() ? code->osr_entry_bci() : InvocationEntryBci);
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@4908: WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
iignatyev@4592:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4592:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@4592:   bool result = mh->dont_inline();
iignatyev@4592:   mh->set_dont_inline(value == JNI_TRUE);
iignatyev@4592:   return result;
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@5541: WB_ENTRY(jint, WB_GetCompileQueueSize(JNIEnv* env, jobject o, jint comp_level))
iignatyev@5541:   if (comp_level == CompLevel_any) {
iignatyev@5541:     return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ +
iignatyev@5541:         CompileBroker::queue_size(CompLevel_full_profile) /* C1 */;
iignatyev@5541:   } else {
iignatyev@5541:     return CompileBroker::queue_size(comp_level);
iignatyev@5541:   }
iignatyev@4592: WB_END
iignatyev@4592: 
iignatyev@4908: WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value))
iignatyev@4908:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4908:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@4908:   bool result = mh->force_inline();
iignatyev@4908:   mh->set_force_inline(value == JNI_TRUE);
iignatyev@4908:   return result;
iignatyev@4908: WB_END
iignatyev@4908: 
iignatyev@5541: WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level, jint bci))
iignatyev@4908:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4908:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@5541:   nmethod* nm = CompileBroker::compile_method(mh, bci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD);
iignatyev@4908:   MutexLockerEx mu(Compile_lock);
iignatyev@4908:   return (mh->queued_for_compilation() || nm != NULL);
iignatyev@4908: WB_END
iignatyev@4908: 
iignatyev@4908: WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
iignatyev@4908:   jmethodID jmid = reflected_method_to_jmid(thread, env, method);
iignatyev@4908:   methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid));
iignatyev@4908:   MutexLockerEx mu(Compile_lock);
iignatyev@4908:   MethodData* mdo = mh->method_data();
jiangli@4938:   MethodCounters* mcs = mh->method_counters();
iignatyev@4908: 
iignatyev@4908:   if (mdo != NULL) {
iignatyev@4908:     mdo->init();
iignatyev@4908:     ResourceMark rm;
iignatyev@4908:     int arg_count = mdo->method()->size_of_parameters();
iignatyev@4908:     for (int i = 0; i < arg_count; i++) {
iignatyev@4908:       mdo->set_arg_modified(i, 0);
iignatyev@4908:     }
iignatyev@4908:   }
iignatyev@4908: 
iignatyev@4908:   mh->clear_not_c1_compilable();
iignatyev@4908:   mh->clear_not_c2_compilable();
iignatyev@4908:   mh->clear_not_c2_osr_compilable();
iignatyev@4908:   NOT_PRODUCT(mh->set_compiled_invocation_count(0));
jiangli@4938:   if (mcs != NULL) {
jiangli@4938:     mcs->backedge_counter()->init();
jiangli@4938:     mcs->invocation_counter()->init();
jiangli@4938:     mcs->set_interpreter_invocation_count(0);
jiangli@4938:     mcs->set_interpreter_throwout_count(0);
iignatyev@4908: 
iignatyev@4908: #ifdef TIERED
jiangli@4938:     mcs->set_rate(0.0F);
jiangli@4938:     mh->set_prev_event_count(0, THREAD);
jiangli@4938:     mh->set_prev_time(0, THREAD);
iignatyev@4908: #endif
jiangli@4938:   }
iignatyev@4908: WB_END
iignatyev@4908: 
mgerdin@4850: WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString))
mgerdin@4850:   ResourceMark rm(THREAD);
mgerdin@4850:   int len;
hseigel@4987:   jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len, CHECK_false);
hseigel@4987:   return (StringTable::lookup(name, len) != NULL);
mgerdin@4850: WB_END
mgerdin@4850: 
mgerdin@4850: WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o))
mgerdin@4850:   Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true);
mgerdin@4850:   Universe::heap()->collect(GCCause::_last_ditch_collection);
mgerdin@4850: WB_END
mgerdin@4850: 
mikael@4989: 
mikael@5174: WB_ENTRY(void, WB_ReadReservedMemory(JNIEnv* env, jobject o))
mikael@5174:   // static+volatile in order to force the read to happen
mikael@5174:   // (not be eliminated by the compiler)
mikael@5174:   static char c;
mikael@5174:   static volatile char* p;
mikael@5174: 
mikael@5174:   p = os::reserve_memory(os::vm_allocation_granularity(), NULL, 0);
mikael@5174:   if (p == NULL) {
mikael@5174:     THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(), "Failed to reserve memory");
mikael@5174:   }
mikael@5174: 
mikael@5174:   c = *p;
mikael@4989: WB_END
mikael@4989: 
nloodin@3681: //Some convenience methods to deal with objects from java
nloodin@3681: int WhiteBox::offset_for_field(const char* field_name, oop object,
nloodin@3681:     Symbol* signature_symbol) {
nloodin@3681:   assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid");
nloodin@3681:   Thread* THREAD = Thread::current();
nloodin@3681: 
nloodin@3681:   //Get the class of our object
coleenp@4037:   Klass* arg_klass = object->klass();
nloodin@3681:   //Turn it into an instance-klass
coleenp@4037:   InstanceKlass* ik = InstanceKlass::cast(arg_klass);
nloodin@3681: 
nloodin@3681:   //Create symbols to look for in the class
nloodin@3681:   TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name),
nloodin@3681:       THREAD);
nloodin@3681: 
nloodin@3681:   //To be filled in with an offset of the field we're looking for
nloodin@3681:   fieldDescriptor fd;
nloodin@3681: 
coleenp@4037:   Klass* res = ik->find_field(name_symbol, signature_symbol, &fd);
nloodin@3681:   if (res == NULL) {
nloodin@3681:     tty->print_cr("Invalid layout of %s at %s", ik->external_name(),
nloodin@3681:         name_symbol->as_C_string());
nloodin@3681:     fatal("Invalid layout of preloaded class");
nloodin@3681:   }
nloodin@3681: 
nloodin@3681:   //fetch the field at the offset we've found
nloodin@3681:   int dest_offset = fd.offset();
nloodin@3681: 
nloodin@3681:   return dest_offset;
nloodin@3681: }
nloodin@3681: 
nloodin@3681: 
nloodin@3681: const char* WhiteBox::lookup_jstring(const char* field_name, oop object) {
nloodin@3681:   int offset = offset_for_field(field_name, object,
nloodin@3681:       vmSymbols::string_signature());
nloodin@3681:   oop string = object->obj_field(offset);
sla@3905:   if (string == NULL) {
sla@3905:     return NULL;
sla@3905:   }
nloodin@3681:   const char* ret = java_lang_String::as_utf8_string(string);
nloodin@3681:   return ret;
nloodin@3681: }
nloodin@3681: 
nloodin@3681: bool WhiteBox::lookup_bool(const char* field_name, oop object) {
nloodin@3681:   int offset =
nloodin@3681:       offset_for_field(field_name, object, vmSymbols::bool_signature());
nloodin@3681:   bool ret = (object->bool_field(offset) == JNI_TRUE);
nloodin@3681:   return ret;
nloodin@3681: }
nloodin@3681: 
nloodin@3681: 
mgerdin@3619: #define CC (char*)
mgerdin@3619: 
mgerdin@3619: static JNINativeMethod methods[] = {
mgerdin@3619:   {CC"getObjectAddress",   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
mgerdin@3619:   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
iignatyev@4592:   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
iignatyev@4592:   {CC"parseCommandLine",
iignatyev@4592:       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
nloodin@3681:       (void*) &WB_ParseCommandLine
nloodin@3681:   },
tschatzl@5701:   {CC"getCompressedOopsMaxHeapSize", CC"()J",
tschatzl@5701:       (void*)&WB_GetCompressedOopsMaxHeapSize},
tschatzl@5073:   {CC"printHeapSizes",     CC"()V",                   (void*)&WB_PrintHeapSizes    },
mgerdin@6078:   {CC"runMemoryUnitTests", CC"()V",                   (void*)&WB_RunMemoryUnitTests},
mgerdin@6078:   {CC"readFromNoaccessArea",CC"()V",                  (void*)&WB_ReadFromNoaccessArea},
mgerdin@6078:   {CC"stressVirtualSpaceResize",CC"(JJJ)I",           (void*)&WB_StressVirtualSpaceResize},
jprovino@4542: #if INCLUDE_ALL_GCS
mgerdin@3619:   {CC"g1InConcurrentMark", CC"()Z",                   (void*)&WB_G1InConcurrentMark},
mgerdin@3619:   {CC"g1IsHumongous",      CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous     },
mgerdin@3619:   {CC"g1NumFreeRegions",   CC"()J",                   (void*)&WB_G1NumFreeRegions  },
mgerdin@3619:   {CC"g1RegionSize",       CC"()I",                   (void*)&WB_G1RegionSize      },
jprovino@4542: #endif // INCLUDE_ALL_GCS
cjplummer@5586: #if INCLUDE_NMT
ctornqvi@4885:   {CC"NMTMalloc",           CC"(J)J",                 (void*)&WB_NMTMalloc          },
ctornqvi@4885:   {CC"NMTFree",             CC"(J)V",                 (void*)&WB_NMTFree            },
ctornqvi@4885:   {CC"NMTReserveMemory",    CC"(J)J",                 (void*)&WB_NMTReserveMemory   },
ctornqvi@4885:   {CC"NMTCommitMemory",     CC"(JJ)V",                (void*)&WB_NMTCommitMemory    },
ctornqvi@4885:   {CC"NMTUncommitMemory",   CC"(JJ)V",                (void*)&WB_NMTUncommitMemory  },
ctornqvi@4885:   {CC"NMTReleaseMemory",    CC"(JJ)V",                (void*)&WB_NMTReleaseMemory   },
ctornqvi@4885:   {CC"NMTWaitForDataMerge", CC"()Z",                  (void*)&WB_NMTWaitForDataMerge},
cjplummer@5586:   {CC"NMTIsDetailSupported",CC"()Z",                  (void*)&WB_NMTIsDetailSupported},
ctornqvi@4512: #endif // INCLUDE_NMT
iignatyev@4592:   {CC"deoptimizeAll",      CC"()V",                   (void*)&WB_DeoptimizeAll     },
iignatyev@5541:   {CC"deoptimizeMethod",   CC"(Ljava/lang/reflect/Executable;Z)I",
iignatyev@4592:                                                       (void*)&WB_DeoptimizeMethod  },
iignatyev@5541:   {CC"isMethodCompiled",   CC"(Ljava/lang/reflect/Executable;Z)Z",
iignatyev@4592:                                                       (void*)&WB_IsMethodCompiled  },
iignatyev@5541:   {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Executable;IZ)Z",
iignatyev@4592:                                                       (void*)&WB_IsMethodCompilable},
iignatyev@4592:   {CC"isMethodQueuedForCompilation",
iignatyev@4951:       CC"(Ljava/lang/reflect/Executable;)Z",          (void*)&WB_IsMethodQueuedForCompilation},
iignatyev@4592:   {CC"makeMethodNotCompilable",
iignatyev@5541:       CC"(Ljava/lang/reflect/Executable;IZ)V",        (void*)&WB_MakeMethodNotCompilable},
iignatyev@4908:   {CC"testSetDontInlineMethod",
iignatyev@4951:       CC"(Ljava/lang/reflect/Executable;Z)Z",         (void*)&WB_TestSetDontInlineMethod},
iignatyev@4592:   {CC"getMethodCompilationLevel",
iignatyev@5541:       CC"(Ljava/lang/reflect/Executable;Z)I",         (void*)&WB_GetMethodCompilationLevel},
iignatyev@5541:   {CC"getMethodEntryBci",
iignatyev@5541:       CC"(Ljava/lang/reflect/Executable;)I",          (void*)&WB_GetMethodEntryBci},
iignatyev@5541:   {CC"getCompileQueueSize",
iignatyev@5541:       CC"(I)I",                                       (void*)&WB_GetCompileQueueSize},
iignatyev@4908:   {CC"testSetForceInlineMethod",
iignatyev@4951:       CC"(Ljava/lang/reflect/Executable;Z)Z",         (void*)&WB_TestSetForceInlineMethod},
iignatyev@4908:   {CC"enqueueMethodForCompilation",
iignatyev@5541:       CC"(Ljava/lang/reflect/Executable;II)Z",        (void*)&WB_EnqueueMethodForCompilation},
iignatyev@4908:   {CC"clearMethodState",
iignatyev@4951:       CC"(Ljava/lang/reflect/Executable;)V",          (void*)&WB_ClearMethodState},
mgerdin@4850:   {CC"isInStringTable",   CC"(Ljava/lang/String;)Z",  (void*)&WB_IsInStringTable  },
mgerdin@4850:   {CC"fullGC",   CC"()V",                             (void*)&WB_FullGC },
mikael@5174:   {CC"readReservedMemory", CC"()V",                   (void*)&WB_ReadReservedMemory },
mgerdin@3619: };
mgerdin@3619: 
mgerdin@3619: #undef CC
mgerdin@3619: 
mgerdin@3619: JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass))
mgerdin@3619:   {
mgerdin@3619:     if (WhiteBoxAPI) {
mgerdin@3619:       // Make sure that wbclass is loaded by the null classloader
mgerdin@3619:       instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass());
mgerdin@3619:       Handle loader(ikh->class_loader());
mgerdin@3619:       if (loader.is_null()) {
iignatyev@5028:         ResourceMark rm;
mgerdin@3619:         ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI
iignatyev@5028:         bool result = true;
iignatyev@5028:         //  one by one registration natives for exception catching
iignatyev@5028:         jclass exceptionKlass = env->FindClass(vmSymbols::java_lang_NoSuchMethodError()->as_C_string());
iignatyev@5028:         for (int i = 0, n = sizeof(methods) / sizeof(methods[0]); i < n; ++i) {
iignatyev@5028:           if (env->RegisterNatives(wbclass, methods + i, 1) != 0) {
iignatyev@5028:             result = false;
iignatyev@5028:             if (env->ExceptionCheck() && env->IsInstanceOf(env->ExceptionOccurred(), exceptionKlass)) {
iignatyev@5028:               // j.l.NoSuchMethodError is thrown when a method can't be found or a method is not native
iignatyev@5028:               // ignoring the exception
iignatyev@5028:               tty->print_cr("Warning: 'NoSuchMethodError' on register of sun.hotspot.WhiteBox::%s%s", methods[i].name, methods[i].signature);
iignatyev@5028:               env->ExceptionClear();
iignatyev@5028:             } else {
iignatyev@5028:               // register is failed w/o exception or w/ unexpected exception
iignatyev@5028:               tty->print_cr("Warning: unexpected error on register of sun.hotspot.WhiteBox::%s%s. All methods will be unregistered", methods[i].name, methods[i].signature);
iignatyev@5028:               env->UnregisterNatives(wbclass);
iignatyev@5028:               break;
iignatyev@5028:             }
iignatyev@5028:           }
iignatyev@5028:         }
iignatyev@5028: 
iignatyev@5028:         if (result) {
mgerdin@3619:           WhiteBox::set_used();
mgerdin@3619:         }
mgerdin@3619:       }
mgerdin@3619:     }
mgerdin@3619:   }
mgerdin@3619: JVM_END