/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "gc_interface/collectedHeap.hpp"
#include "memory/threadLocalAllocBuffer.hpp"
#include "runtime/atomic.hpp"
#include "runtime/thread.hpp"
invariants();
// successful thread-local allocation
#ifdef ASSERT
// Skip mangling the space corresponding to the object header to
// ensure that the returned space is not considered parsable by
// any concurrent GC thread.
#endif // ASSERT
// This addition is safe because we know that top is
// at least size below end, so the add can't wrap.
invariants();
return obj;
}
return NULL;
}
// Compute the size for the new TLAB.
// The "last" tlab may be smaller to reduce fragmentation.
// unsafe_max_tlab_alloc is just a hint.
// Make sure there's enough room for object and filler int[].
if (new_tlab_size < obj_plus_filler_size) {
// If there isn't enough room for the allocation, return failure.
" returns failure",
obj_size);
}
return 0;
}
" returns " SIZE_FORMAT,
}
return new_tlab_size;
}
// Raise size required to bypass TLAB next time. Why? Else there's
// a risk that a thread that repeatedly allocates objects of one
// size will get stuck on this slow path.
" obj: "SIZE_FORMAT
" free: "SIZE_FORMAT
}
}
#endif // SHARE_VM_MEMORY_THREADLOCALALLOCBUFFER_INLINE_HPP