summaryrefslogtreecommitdiffstats
path: root/src/usr/diag/attn/common/attnops.H
blob: 6494f107829953b1fa87e19800013ba3f0c9c2e3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* $Source: src/usr/diag/attn/common/attnops.H $                          */
/*                                                                        */
/* OpenPOWER HostBoot Project                                             */
/*                                                                        */
/* Contributors Listed Below - COPYRIGHT 2014                             */
/* [+] International Business Machines Corp.                              */
/*                                                                        */
/*                                                                        */
/* Licensed under the Apache License, Version 2.0 (the "License");        */
/* you may not use this file except in compliance with the License.       */
/* You may obtain a copy of the License at                                */
/*                                                                        */
/*     http://www.apache.org/licenses/LICENSE-2.0                         */
/*                                                                        */
/* Unless required by applicable law or agreed to in writing, software    */
/* distributed under the License is distributed on an "AS IS" BASIS,      */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
/* implied. See the License for the specific language governing           */
/* permissions and limitations under the License.                         */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
#ifndef __ATTN_ATTNOPS_H
#define __ATTN_ATTNOPS_H

/**
 * @file attnops.H
 *
 * @brief HBATTN Attention and AttentionOps definitions.
 */

#include "common/attnfwd.H"

namespace ATTN
{

/**
 * @brief AttentionOps Interface specification.
 *
 * For types that implement mask, unmask and query operations.
 */
class AttentionOps
{
    public:

        /**
         * @brief dtor
         */
        virtual ~AttentionOps() {}

        /**
         * @brief AttnOpsTest Provide access to unit test.
         */
        friend class AttnOpsTest;
};

/**
 * @brief Attention Operation router.
 *
 * Routes Attention mask, unmask and query operations
 * to the correct handler.
 */
class Attention
{
    public:

        /**
         * @brief getData Convert this attention to PRDF::AttnData.
         *
         * @param[out] o_data Converted attention.
         */
        void getData(PRDF::AttnData & o_data) const
        {
            o_data = iv_data;
        }

        /**
         * @brief compare Compare two attentions.
         *
         * @param[in] i_rhs The other attention.
         *
         * @retval[-1] This attention is less than the other attention.
         * @retval[1] This attention is greather than the other attention.
         * @retval[0] This attention is equivalent to the other attention.
         */
        int64_t compare(const Attention & i_rhs) const;

        /**
         * @brief ctor
         *
         * @param[in] i_data The PRDF::AttnData representation of the attention.
         * @param[in] i_ops The AttentionOps instance to which operations
         *                  should be routed.
         */
        Attention(const PRDF::AttnData & i_data,
                AttentionOps * i_ops)
            : iv_data(i_data), iv_ops(i_ops) {}

    private:

        /**
         * @brief iv_data The PRDF::AttnData representation of the attention.
         */
        PRDF::AttnData iv_data;

        /**
         * @brief iv_ops The AttentionOps instance to which operations
         *               should be routed.
         */
        AttentionOps * iv_ops;

        /**
         * @brief AttnOpsTest Provide access to unit test.
         */
        friend class ::AttnOpsTest;
};

/**
 * @brief operator< Test two attentions for less than.
 *
 * @param[in] i_lhs The left hand side of the comparison.
 * @param[in] i_rhs The right hand side of the comparison.
 *
 * @retval[true] i_lhs is less than i_rhs.
 * @retval[false] i_lhs is not less than i_rhs.
 */
inline bool operator<(const Attention & i_lhs, const Attention & i_rhs)
{
    return i_lhs.compare(i_rhs) < 0;
}
}
#endif
OpenPOWER on IntegriCloud