1 /* 2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "jfr/recorder/jfrRecorder.hpp" 27 #include "jfr/utilities/jfrAllocation.hpp" 28 #include "logging/log.hpp" 29 #include "memory/allocation.inline.hpp" 30 #include "runtime/atomic.hpp" 31 #include "runtime/orderAccess.inline.hpp" 32 #include "runtime/vm_version.hpp" 33 #include "utilities/debug.hpp" 34 #include "utilities/macros.hpp" 35 #include "utilities/nativeCallStack.hpp" 36 37 #ifdef ASSERT 38 static jlong atomic_add_jlong(jlong value, jlong volatile* const dest) { 39 assert(VM_Version::supports_cx8(), "unsupported"); 40 jlong compare_value; 41 jlong exchange_value; 42 do { 43 compare_value = OrderAccess::load_acquire(dest); 44 exchange_value = compare_value + value; 45 } while (Atomic::cmpxchg(exchange_value, dest, compare_value) != compare_value); 46 return exchange_value; 47 } 48 49 // debug statistics 50 static volatile jlong _allocated_bytes = 0; 51 static volatile jlong _deallocated_bytes = 0; 52 static volatile jlong _live_set_bytes = 0; 53 54 static void add(size_t alloc_size) { 55 if (!JfrRecorder::is_created()) { 56 const jlong total_allocated = atomic_add_jlong(alloc_size, &_allocated_bytes); 57 const jlong current_live_set = atomic_add_jlong(alloc_size, &_live_set_bytes); 58 log_trace(jfr, system)("Allocation: [" SIZE_FORMAT "] bytes", alloc_size); 59 log_trace(jfr, system)("Total alloc [" JLONG_FORMAT "] bytes", total_allocated); 60 log_trace(jfr, system)("Liveset: [" JLONG_FORMAT "] bytes", current_live_set); 61 } 62 } 63 64 static void subtract(size_t dealloc_size) { 65 if (!JfrRecorder::is_created()) { 66 const size_t total_deallocated = atomic_add_jlong(dealloc_size, &_deallocated_bytes); 67 const size_t current_live_set = atomic_add_jlong(dealloc_size * -1, &_live_set_bytes); 68 log_trace(jfr, system)("Deallocation: [" SIZE_FORMAT "] bytes", dealloc_size); 69 log_trace(jfr, system)("Total dealloc [" JLONG_FORMAT "] bytes", total_deallocated); 70 log_trace(jfr, system)("Liveset: [" JLONG_FORMAT "] bytes", current_live_set); 71 } 72 } 73 74 static void hook_memory_deallocation(size_t dealloc_size) { 75 subtract(dealloc_size); 76 } 77 #endif // ASSERT 78 79 static void hook_memory_allocation(const char* allocation, size_t alloc_size) { 80 if (NULL == allocation) { 81 if (!JfrRecorder::is_created()) { 82 log_warning(jfr, system)("Memory allocation failed for size [" SIZE_FORMAT "] bytes", alloc_size); 83 return; 84 } else { 85 // after critical startup, fail as by default 86 vm_exit_out_of_memory(alloc_size, OOM_MALLOC_ERROR, "AllocateHeap"); 87 } 88 } 89 debug_only(add(alloc_size)); 90 } 91 92 void JfrCHeapObj::on_memory_allocation(const void* allocation, size_t size) { 93 hook_memory_allocation((const char*)allocation, size); 94 } 95 96 void* JfrCHeapObj::operator new(size_t size) throw() { 97 return operator new(size, std::nothrow); 98 } 99 100 void* JfrCHeapObj::operator new (size_t size, const std::nothrow_t& nothrow_constant) throw() { 101 void* const memory = CHeapObj<mtTracing>::operator new(size, nothrow_constant, CALLER_PC); 102 hook_memory_allocation((const char*)memory, size); 103 return memory; 104 } 105 106 void* JfrCHeapObj::operator new [](size_t size) throw() { 107 return operator new[](size, std::nothrow); 108 } 109 110 void* JfrCHeapObj::operator new [](size_t size, const std::nothrow_t& nothrow_constant) throw() { 111 void* const memory = CHeapObj<mtTracing>::operator new[](size, nothrow_constant, CALLER_PC); 112 hook_memory_allocation((const char*)memory, size); 113 return memory; 114 } 115 116 void JfrCHeapObj::operator delete(void* p, size_t size) { 117 debug_only(hook_memory_deallocation(size);) 118 CHeapObj<mtTracing>::operator delete(p); 119 } 120 121 void JfrCHeapObj::operator delete[](void* p, size_t size) { 122 debug_only(hook_memory_deallocation(size);) 123 CHeapObj<mtTracing>::operator delete[](p); 124 } 125 126 char* JfrCHeapObj::realloc_array(char* old, size_t size) { 127 char* const memory = ReallocateHeap(old, size, mtTracing, AllocFailStrategy::RETURN_NULL); 128 hook_memory_allocation(memory, size); 129 return memory; 130 } 131 132 void JfrCHeapObj::free(void* p, size_t size) { 133 debug_only(hook_memory_deallocation(size);) 134 FreeHeap(p); 135 } 136 137 char* JfrCHeapObj::allocate_array_noinline(size_t elements, size_t element_size) { 138 return AllocateHeap(elements * element_size, mtTracing, CALLER_PC, AllocFailStrategy::RETURN_NULL); 139 }