g1AllocationContext.cpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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#include "precompiled.hpp"
#include "gc_implementation/g1/g1AllocationContext.hpp"
#include "runtime/thread.hpp"

// 0 will be returned if in ROOT tenant or memory isolation not enabled
AllocationContext_t AllocationContext::_root_context;

AllocationContext_t AllocationContext::current() {
  return Thread::current()->allocation_context();
}

AllocationContext_t AllocationContext::system() {
  return _root_context;
}

AllocationContextMark::AllocationContextMark(AllocationContext_t ctxt)
        : _saved_context(Thread::current()->allocation_context()) {
  Thread* thrd = Thread::current();
  thrd->set_allocation_context(ctxt);
}

AllocationContextMark::~AllocationContextMark() {
  Thread* thrd = Thread::current();
  thrd->set_allocation_context(_saved_context);
}