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         if (!ctx)
  35                 return NULL;
  36
  37         th = g_new0(struct bt_trace_handle, 1);
  38         th->id = ctx->last_trace_handle_id++;
  39         return th;
  40 }
  41
  42 void bt_trace_handle_destroy(struct bt_trace_handle *th)
  43 {
  44         th->format->close_trace(th->td);
  45         g_free(th);
  46 }
  47
  48 int bt_trace_handle_get_id(struct bt_trace_handle *th)
  49 {
  50         if (!th)
  51                 return -1;
  52
  53         return th->id;
  54 }
  55
  56 const char *bt_trace_handle_get_path(struct bt_context *ctx, int handle_id)
  57 {
  58         struct bt_trace_handle *handle;
  59
  60         if (!ctx)
  61                 return NULL;
  62
  63         handle = g_hash_table_lookup(ctx->trace_handles,
  64                         (gpointer) (unsigned long) handle_id);
  65         if (!handle)
  66                 return NULL;
  67         return handle->path;
  68 }
  69
  70 uint64_t bt_trace_handle_get_timestamp_begin(struct bt_context *ctx,
  71                 int handle_id, enum bt_clock_type type)
  72 {
  73         struct bt_trace_handle *handle;
  74         uint64_t ret;
  75
  76         if (!ctx)
  77                 return -1ULL;
  78
  79         handle = g_hash_table_lookup(ctx->trace_handles,
  80                         (gpointer) (unsigned long) handle_id);
  81         if (!handle) {
  82                 ret = -1ULL;
  83                 goto end;
  84         }
  85         if (type == BT_CLOCK_REAL) {
  86                 ret = handle->real_timestamp_begin;
  87         } else if (type == BT_CLOCK_CYCLES) {
  88                 ret = handle->cycles_timestamp_begin;
  89         } else {
  90                 ret = -1ULL;
  91         }
  92
  93 end:
  94         return ret;
  95 }
  96
  97 uint64_t bt_trace_handle_get_timestamp_end(struct bt_context *ctx,
  98                 int handle_id, enum bt_clock_type type)
  99 {
 100         struct bt_trace_handle *handle;
 101         uint64_t ret;
 102
 103         if (!ctx)
 104                 return -1ULL;
 105
 106         handle = g_hash_table_lookup(ctx->trace_handles,
 107                         (gpointer) (unsigned long) handle_id);
 108         if (!handle) {
 109                 ret = -1ULL;
 110                 goto end;
 111         }
 112         if (type == BT_CLOCK_REAL) {
 113                 ret = handle->real_timestamp_end;
 114         } else if (type == BT_CLOCK_CYCLES) {
 115                 ret = handle->cycles_timestamp_end;
 116         } else {
 117                 ret = -1ULL;
 118         }
 119
 120 end:
 121         return ret;
 122 }