barectf/templates/c/barectf.h.j2

   1 {#
   2  # The MIT License (MIT)
   3  #
   4  # Copyright (c) 2020 Philippe Proulx <pproulx@efficios.com>
   5  #
   6  # Permission is hereby granted, free of charge, to any person obtaining
   7  # a copy of this software and associated documentation files (the
   8  # "Software"), to deal in the Software without restriction, including
   9  # without limitation the rights to use, copy, modify, merge, publish,
  10  # distribute, sublicense, and/or sell copies of the Software, and to
  11  # permit persons to whom the Software is furnished to do so, subject to
  12  # the following conditions:
  13  #
  14  # The above copyright notice and this permission notice shall be
  15  # included in all copies or substantial portions of the Software.
  16  #
  17  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
  21  # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  22  # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  23  # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  #}
  25 {% import 'common.j2' as common %}
  26 {% import 'c/common.j2' as c_common %}
  27 {% set prefix = common.prefix %}
  28 {% set ucprefix = common.ucprefix %}
  29 {% set trace_type = cfg.trace.type %}
  30 {% set cg_opts = cfg.options.code_generation_options %}
  31 {% set def_dst = cg_opts.default_data_stream_type %}
  32 {% set header_opts = cg_opts.header_options %}
  33 {% set const_params = false %}
  34 #ifndef _{{ ucprefix }}H
  35 #define _{{ ucprefix }}H
  36
  37 {% include 'license-header.j2' %}
  38
  39
  40 #include <stdint.h>
  41
  42 #ifdef __cplusplus
  43 extern "C" {
  44 #endif
  45
  46 {% if header_opts.identifier_prefix_definition %}
  47 /* Backward compatibility */
  48 #define _BARECTF_PREFIX {{ prefix }}
  49
  50 #define _BARECTF_IDENTIFIER_PREFIX {{ prefix }}
  51 {% endif %}
  52 {% if def_dst and header_opts.default_data_stream_type_name_definition %}
  53 /* Backward compatibility */
  54 #define _BARECTF_DEFAULT_STREAM {{ def_dst.name }}
  55
  56 #define _BARECTF_DEFAULT_DATA_STREAM_TYPE_NAME {{ def_dst.name }}
  57 {% endif %}
  58 {% if def_dst %}
  59
  60         {% for ert in def_dst.event_record_types | sort %}
  61 #define {{ prefix }}trace_{{ ert.name }} {{ c_common.trace_func_name(def_dst, ert) }}
  62         {% endfor %}
  63 {% endif %}
  64
  65 struct {{ prefix }}ctx;
  66
  67 uint32_t {{ prefix }}packet_size(const void *ctx);
  68 int {{ prefix }}packet_is_full(const void *ctx);
  69 int {{ prefix }}packet_is_empty(const void *ctx);
  70 uint32_t {{ prefix }}packet_events_discarded(const void *ctx);
  71 uint8_t *{{ prefix }}packet_buf(const void *ctx);
  72 void {{ prefix }}packet_set_buf(void *ctx, uint8_t *buf, uint32_t buf_size);
  73 uint32_t {{ prefix }}packet_buf_size(const void *ctx);
  74 int {{ prefix }}packet_is_open(const void *ctx);
  75 int {{ prefix }}is_in_tracing_section(const void *ctx);
  76 volatile const int *{{ prefix }}is_in_tracing_section_ptr(const void *ctx);
  77 int {{ prefix }}is_tracing_enabled(const void *ctx);
  78 void {{ prefix }}enable_tracing(void *ctx, int enable);
  79
  80 /* barectf platform callbacks */
  81 struct {{ prefix }}platform_callbacks {
  82 {% set clk_types = trace_type.clock_types %}
  83 {% if clk_types %}
  84         /* Clock source callbacks */
  85         {% for clk_type in clk_types | sort %}
  86         {{ cg_opts.clock_type_c_types[clk_type] }} (*{{ clk_type.name }}_clock_get_value)(void *);
  87         {% endfor %}
  88
  89 {% endif %}
  90         /* Is the back end full? */
  91         int (*is_backend_full)(void *);
  92
  93         /* Open packet */
  94         void (*open_packet)(void *);
  95
  96         /* Close packet */
  97         void (*close_packet)(void *);
  98 };
  99
 100 /* Common barectf context */
 101 struct {{ prefix }}ctx {
 102         /* Platform callbacks */
 103         struct {{ prefix }}platform_callbacks cbs;
 104
 105         /* Platform data (passed to callbacks) */
 106         void *data;
 107
 108         /* Output buffer (will contain a CTF binary packet) */
 109         uint8_t *buf;
 110
 111         /* Packet's total size (bits) */
 112         uint32_t packet_size;
 113
 114         /* Packet's content size (bits) */
 115         uint32_t content_size;
 116
 117         /* Current position from beginning of packet (bits) */
 118         uint32_t at;
 119
 120         /* Size of packet header + context fields (content offset) */
 121         uint32_t off_content;
 122
 123         /* Discarded event records counter snapshot */
 124         uint32_t events_discarded;
 125
 126         /* Current packet is open? */
 127         int packet_is_open;
 128
 129         /* In tracing code? */
 130         volatile int in_tracing_section;
 131
 132         /* Tracing is enabled? */
 133         volatile int is_tracing_enabled;
 134
 135         /* Use current/last event record timestamp when opening/closing packets */
 136         int use_cur_last_event_ts;
 137 };
 138
 139 {% for dst in trace_type.data_stream_types | sort %}
 140 /* Context for data stream type `{{ dst.name }}` */
 141 struct {{ prefix }}{{ dst.name }}_ctx {
 142         /* Parent */
 143         struct {{ prefix }}ctx parent;
 144
 145         /* Config-specific members follow */
 146         {% if trace_type._pkt_header_ft %}
 147                 {% for member_name in trace_type._pkt_header_ft.members %}
 148         uint32_t off_ph_{{ member_name }};
 149                 {% endfor %}
 150         {% endif %}
 151         {% for member_name in dst._pkt_ctx_ft.members %}
 152         uint32_t off_pc_{{ member_name }};
 153         {% endfor %}
 154         {% if dst.default_clock_type %}
 155         {{ cg_opts.clock_type_c_types[dst.default_clock_type] }} cur_last_event_ts;
 156         {% endif %}
 157 };
 158
 159 {% endfor %}
 160 {% include 'c/ctx-init-func-proto.j2' %};
 161
 162 {% for dst in trace_type.data_stream_types | sort %}
 163         {% include 'c/open-func-proto.j2' %};
 164
 165         {% include 'c/close-func-proto.j2' %};
 166         {% for ert in dst.event_record_types | sort %}
 167
 168                 {% include 'c/trace-func-proto.j2' %};
 169         {% endfor %}
 170 {% endfor %}
 171
 172 #ifdef __cplusplus
 173 }
 174 #endif
 175
 176 #endif /* _{{ ucprefix }}H */