| 1 | /* |
| 2 | * SPDX-License-Identifier: MIT |
| 3 | * |
| 4 | * Copyright (C) 2010-2019 EfficiOS Inc. and Linux Foundation |
| 5 | */ |
| 6 | |
| 7 | #ifndef BABELTRACE2_GRAPH_PRIVATE_QUERY_EXECUTOR_H |
| 8 | #define BABELTRACE2_GRAPH_PRIVATE_QUERY_EXECUTOR_H |
| 9 | |
| 10 | /* IWYU pragma: private, include <babeltrace2/babeltrace.h> */ |
| 11 | |
| 12 | #ifndef __BT_IN_BABELTRACE_H |
| 13 | # error "Please include <babeltrace2/babeltrace.h> instead." |
| 14 | #endif |
| 15 | |
| 16 | #include <babeltrace2/types.h> |
| 17 | |
| 18 | #ifdef __cplusplus |
| 19 | extern "C" { |
| 20 | #endif |
| 21 | |
| 22 | /*! |
| 23 | @defgroup api-priv-qexec Private query executor |
| 24 | @ingroup api-comp-cls-dev |
| 25 | |
| 26 | @brief |
| 27 | Private view of a \bt_qexec for a \bt_comp_cls |
| 28 | \ref api-comp-cls-dev-meth-query "query method". |
| 29 | |
| 30 | A <strong><em>private query executor</em></strong> is a private view, |
| 31 | from within a \bt_comp_cls |
| 32 | \ref api-comp-cls-dev-meth-query "query method", of a |
| 33 | \bt_qexec. |
| 34 | |
| 35 | A query method receives a private query executor as its |
| 36 | \bt_p{query_executor} parameter. |
| 37 | |
| 38 | As of \bt_name_version_min_maj, this module only offers the |
| 39 | bt_private_query_executor_as_query_executor_const() function to |
| 40 | \ref api-fund-c-typing "upcast" a private query executor to a |
| 41 | \c const query executor. You need this to get the query executor's |
| 42 | \ref api-qexec-prop-log-lvl "logging level". |
| 43 | */ |
| 44 | |
| 45 | /*! @{ */ |
| 46 | |
| 47 | /*! |
| 48 | @name Type |
| 49 | @{ |
| 50 | |
| 51 | @typedef struct bt_private_query_executor bt_private_query_executor; |
| 52 | |
| 53 | @brief |
| 54 | Private query executor. |
| 55 | |
| 56 | @} |
| 57 | */ |
| 58 | |
| 59 | /*! |
| 60 | @name Upcast |
| 61 | @{ |
| 62 | */ |
| 63 | |
| 64 | /*! |
| 65 | @brief |
| 66 | \ref api-fund-c-typing "Upcasts" the private query executor |
| 67 | \bt_p{query_executor} to the public #bt_query_executor type. |
| 68 | |
| 69 | @param[in] query_executor |
| 70 | @parblock |
| 71 | Private query executor to upcast. |
| 72 | |
| 73 | Can be \c NULL. |
| 74 | @endparblock |
| 75 | |
| 76 | @returns |
| 77 | \bt_p{query_executor} as a public query executor. |
| 78 | */ |
| 79 | static inline |
| 80 | const bt_query_executor * |
| 81 | bt_private_query_executor_as_query_executor_const( |
| 82 | bt_private_query_executor *query_executor) |
| 83 | { |
| 84 | return __BT_UPCAST_CONST(bt_query_executor, query_executor); |
| 85 | } |
| 86 | |
| 87 | /*! @} */ |
| 88 | |
| 89 | /*! @} */ |
| 90 | |
| 91 | #ifdef __cplusplus |
| 92 | } |
| 93 | #endif |
| 94 | |
| 95 | #endif /* BABELTRACE2_GRAPH_PRIVATE_QUERY_EXECUTOR_H */ |