lib/trace-handle.c

   1 /*
   2  * trace_handle.c
   3  *
   4  * Babeltrace Library
   5  *
   6  * Copyright 2012 EfficiOS Inc. and Linux Foundation
   7  *
   8  * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   9  *         Julien Desfossez <julien.desfossez@efficios.com>
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a copy
  12  * of this software and associated documentation files (the "Software"), to deal
  13  * in the Software without restriction, including without limitation the rights
  14  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  15  * copies of the Software, and to permit persons to whom the Software is
  16  * furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice shall be included in
  19  * all copies or substantial portions of the Software.
  20  */
  21
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24 #include <babeltrace/babeltrace.h>
  25 #include <babeltrace/context.h>
  26 #include <babeltrace/context-internal.h>
  27 #include <babeltrace/trace-handle.h>
  28 #include <babeltrace/trace-handle-internal.h>
  29
  30 struct bt_trace_handle *bt_trace_handle_create(struct bt_context *ctx)
  31 {
  32         struct bt_trace_handle *th;
  33
  34         th = g_new0(struct bt_trace_handle, 1);
  35         th->id = ctx->last_trace_handle_id++;
  36         return th;
  37 }
  38
  39 void bt_trace_handle_destroy(struct bt_trace_handle *th)
  40 {
  41         g_free(th);
  42 }
  43
  44 int bt_trace_handle_get_id(struct bt_trace_handle *th)
  45 {
  46         return th->id;
  47 }
  48
  49 const char *bt_trace_handle_get_path(struct bt_context *ctx, int handle_id)
  50 {
  51         struct bt_trace_handle *handle;
  52
  53         handle = g_hash_table_lookup(ctx->trace_handles,
  54                         (gpointer) (unsigned long) handle_id);
  55         if (!handle)
  56                 return NULL;
  57         return handle->path;
  58 }
  59
  60 uint64_t bt_trace_handle_get_timestamp_begin(struct bt_context *ctx,
  61                 int handle_id, enum bt_clock_type type)
  62 {
  63         struct bt_trace_handle *handle;
  64         uint64_t ret;
  65
  66         handle = g_hash_table_lookup(ctx->trace_handles,
  67                         (gpointer) (unsigned long) handle_id);
  68         if (!handle) {
  69                 ret = -1ULL;
  70                 goto end;
  71         }
  72         if (type == BT_CLOCK_REAL) {
  73                 ret = handle->real_timestamp_begin;
  74         } else if (type == BT_CLOCK_CYCLES) {
  75                 ret = handle->cycles_timestamp_begin;
  76         } else {
  77                 ret = -1ULL;
  78         }
  79
  80 end:
  81         return ret;
  82 }
  83
  84 uint64_t bt_trace_handle_get_timestamp_end(struct bt_context *ctx,
  85                 int handle_id, enum bt_clock_type type)
  86 {
  87         struct bt_trace_handle *handle;
  88         uint64_t ret;
  89
  90         handle = g_hash_table_lookup(ctx->trace_handles,
  91                         (gpointer) (unsigned long) handle_id);
  92         if (!handle) {
  93                 ret = -1ULL;
  94                 goto end;
  95         }
  96         if (type == BT_CLOCK_REAL) {
  97                 ret = handle->real_timestamp_end;
  98         } else if (type == BT_CLOCK_CYCLES) {
  99                 ret = handle->cycles_timestamp_end;
 100         } else {
 101                 ret = -1ULL;
 102         }
 103
 104 end:
 105         return ret;
 106 }