MonitorSnippet.hpp

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 * is available at https://www.apache.org/licenses/LICENSE-2.0.
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 * 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
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 * OpenJDK Assembly Exception [2].
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#ifndef X86MONITORSNIPPET_INCL
#define X86MONITORSNIPPET_INCL

// Format of the monitor slot for tasuki locks is:
//    Bit 0: Fat lock bit
//    Bit 1: Reserved for FLC bit
//    Bits 2-7: Nesting count
//    Bits 8-31: Thread pointer or fat monitor id
//
#define INC_DEC_VALUE        OBJECT_HEADER_LOCK_FIRST_RECURSION_BIT
#define NON_INC_DEC_MASK     ((~OBJECT_HEADER_LOCK_BITS_MASK) | OBJECT_HEADER_LOCK_INFLATED | OBJECT_HEADER_LOCK_FLC | OBJECT_HEADER_LOCK_RESERVED | OBJECT_HEADER_LOCK_LEARNING)
#define NON_INC_DEC_FLC_MASK ((~OBJECT_HEADER_LOCK_BITS_MASK) | OBJECT_HEADER_LOCK_INFLATED)
#define THREAD_PTR_MASK      (~OBJECT_HEADER_LOCK_BITS_MASK)
#define MAX_INL_INC_DEC_MASK ((~OBJECT_HEADER_LOCK_BITS_MASK) | OBJECT_HEADER_LOCK_INFLATED | OBJECT_HEADER_LOCK_FLC | OBJECT_HEADER_LOCK_RESERVED | OBJECT_HEADER_LOCK_LEARNING | OBJECT_HEADER_LOCK_LAST_RECURSION_BIT)
#define FLC_BIT              OBJECT_HEADER_LOCK_FLC
#define RES_BIT              OBJECT_HEADER_LOCK_RESERVED
#define RES_BIT_POSITION     2
#define REC_BIT              OBJECT_HEADER_LOCK_FIRST_RECURSION_BIT
#define FLAGS_MASK           (OBJECT_HEADER_LOCK_INFLATED | OBJECT_HEADER_LOCK_FLC | OBJECT_HEADER_LOCK_RESERVED | OBJECT_HEADER_LOCK_LEARNING)
#define REC_MASK             OBJECT_HEADER_LOCK_RECURSION_MASK

static_assert(RES_BIT == (1 << RES_BIT_POSITION), "RES_BIT_POSITION mismatch");

#endif