/*
* Copyright ( c ) 2014 , 2020 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
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*/
#include "precompiled.hpp"
#include "jfr/recorder/jfrRecorder.hpp"
#include "jfr/utilities/jfrAllocation.hpp"
#include "logging/log.hpp"
#include "memory/allocation.inline.hpp"
#include "runtime/atomic.hpp"
#include "runtime/vm_version.hpp"
#include "services/memTracker.hpp"
#include "utilities/debug.hpp"
#include "utilities/macros.hpp"
#include "utilities/nativeCallStack.hpp"
#ifdef ASSERT
static jlong atomic_add_jlong(jlong value, jlong volatile * const dest) {
assert(VM_Version::supports_cx8(), "unsupported" );
jlong compare_value;
jlong exchange_value;
do {
compare_value = *dest;
exchange_value = compare_value + value;
} while (Atomic::cmpxchg(dest, compare_value, exchange_value) != compare_value);
return exchange_value;
}
// debug statistics
static volatile jlong _allocated_bytes = 0 ;
static volatile jlong _deallocated_bytes = 0 ;
static volatile jlong _live_set_bytes = 0 ;
static void add(size_t alloc_size) {
if (!JfrRecorder::is_created()) {
const jlong total_allocated = atomic_add_jlong((jlong)alloc_size, &_allocated_bytes);
const jlong current_live_set = atomic_add_jlong((jlong)alloc_size, &_live_set_bytes);
log_trace(jfr, system)("Allocation: [" SIZE_FORMAT "] bytes" , alloc_size);
log_trace(jfr, system)("Total alloc [" JLONG_FORMAT "] bytes" , total_allocated);
log_trace(jfr, system)("Liveset: [" JLONG_FORMAT "] bytes" , current_live_set);
}
}
static void subtract(size_t dealloc_size) {
if (!JfrRecorder::is_created()) {
const jlong total_deallocated = atomic_add_jlong((jlong)dealloc_size, &_deallocated_bytes);
const jlong current_live_set = atomic_add_jlong(((jlong)dealloc_size * -1 ), &_live_set_bytes);
log_trace(jfr, system)("Deallocation: [" SIZE_FORMAT "] bytes" , dealloc_size);
log_trace(jfr, system)("Total dealloc [" JLONG_FORMAT "] bytes" , total_deallocated);
log_trace(jfr, system)("Liveset: [" JLONG_FORMAT "] bytes" , current_live_set);
}
}
static void hook_memory_deallocation(size_t dealloc_size) {
subtract(dealloc_size);
}
#endif // ASSERT
static void hook_memory_allocation(const char * allocation, size_t alloc_size) {
if (NULL == allocation) {
if (!JfrRecorder::is_created()) {
log_warning(jfr, system)("Memory allocation failed for size [" SIZE_FORMAT "] bytes" , alloc_size);
return ;
} else {
// after critical startup, fail as by default
vm_exit_out_of_memory(alloc_size, OOM_MALLOC_ERROR, "AllocateHeap" );
}
}
debug_only(add(alloc_size));
}
void JfrCHeapObj::on_memory_allocation(const void * allocation, size_t size) {
hook_memory_allocation((const char *)allocation, size);
}
void * JfrCHeapObj::operator new (size_t size) throw () {
return operator new (size, std::nothrow);
}
void * JfrCHeapObj::operator new (size_t size, const std::nothrow_t& nothrow_constant) throw () {
void * const memory = CHeapObj<mtTracing>::operator new (size, nothrow_constant, CALLER_PC);
hook_memory_allocation((const char *)memory, size);
return memory;
}
void * JfrCHeapObj::operator new [](size_t size) throw () {
return operator new [](size, std::nothrow);
}
void * JfrCHeapObj::operator new [](size_t size, const std::nothrow_t& nothrow_constant) throw () {
void * const memory = CHeapObj<mtTracing>::operator new [](size, nothrow_constant, CALLER_PC);
hook_memory_allocation((const char *)memory, size);
return memory;
}
void JfrCHeapObj::operator delete (void * p, size_t size) {
debug_only(hook_memory_deallocation(size);)
CHeapObj<mtTracing>::operator delete (p);
}
void JfrCHeapObj::operator delete [](void * p, size_t size) {
debug_only(hook_memory_deallocation(size);)
CHeapObj<mtTracing>::operator delete [](p);
}
char * JfrCHeapObj::realloc_array(char * old, size_t size) {
char * const memory = ReallocateHeap(old, size, mtTracing, AllocFailStrategy::RETURN_NULL);
hook_memory_allocation(memory, size);
return memory;
}
void JfrCHeapObj::free(void * p, size_t size) {
debug_only(hook_memory_deallocation(size);)
FreeHeap(p);
}
char * JfrCHeapObj::allocate_array_noinline(size_t elements, size_t element_size) {
return AllocateHeap(elements * element_size, mtTracing, CALLER_PC, AllocFailStrategy::RETURN_NULL);
}
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