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OMRVMEnv.cpp
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OMRVMEnv.cpp
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/*******************************************************************************
* Copyright (c) 2000, 2020 IBM Corp. and others
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at http://eclipse.org/legal/epl-2.0
* or the Apache License, Version 2.0 which accompanies this distribution
* and is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception [1] and GNU General Public
* License, version 2 with the OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
*******************************************************************************/
#include "env/ObjectModel.hpp"
#include <stddef.h>
#include <stdint.h>
#include "codegen/CodeGenerator.hpp"
#include "compile/Compilation.hpp"
#include "env/CompilerEnv.hpp"
#include "env/jittypes.h"
#include "env/VMEnv.hpp"
#include "infra/Assert.hpp"
#include "env/JitConfig.hpp"
#include "env/VerboseLog.hpp"
#ifdef LINUX
#include <sys/time.h>
#endif
namespace TR { class Node; }
TR::VMEnv *
OMR::VMEnv::self()
{
return static_cast<TR::VMEnv *>(this);
}
uintptr_t
OMR::VMEnv::heapTailPaddingSizeInBytes()
{
return 0;
}
// Some of these functions should live in the OMR port library where operating
// system specialization comes naturally.
uint64_t
OMR::VMEnv::getUSecClock()
{
#if defined(LINUX) || defined(OSX)
struct timeval tp;
struct timezone tzp;
gettimeofday (&tp, &tzp);
return (tp.tv_sec * 1000000) + tp.tv_usec;
#else
// TODO: need Windows, AIX, zOS support
return 0;
#endif
}
uint64_t
OMR::VMEnv::getUSecClock(TR::Compilation *comp)
{
return self()->getUSecClock();
}
uint64_t
OMR::VMEnv::getUSecClock(OMR_VMThread *omrVMThread)
{
return self()->getUSecClock();
}
uint64_t
OMR::VMEnv::getHighResClock(TR::Compilation *comp)
{
return self()->getUSecClock();
}
uint64_t
OMR::VMEnv::getHighResClock(OMR_VMThread *omrVMThread)
{
return self()->getUSecClock();
}
static uint64_t highResClockResolution()
{
return 1000000ull; // micro sec
}
uint64_t
OMR::VMEnv::getHighResClockResolution()
{
return ::highResClockResolution();
}
bool
OMR::VMEnv::canAnyMethodEventsBeHooked(TR::Compilation *comp)
{
return self()->canMethodEnterEventBeHooked(comp) || self()->canMethodExitEventBeHooked(comp);
}