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       1                 :            : /*
       2                 :            :  * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
       3                 :            :  *
       4                 :            :  * Licensed under the Apache License, Version 2.0 (the "License").
       5                 :            :  * You may not use this file except in compliance with the License.
       6                 :            :  * A copy of the License is located at
       7                 :            :  *
       8                 :            :  *  http://aws.amazon.com/apache2.0
       9                 :            :  *
      10                 :            :  * or in the "license" file accompanying this file. This file is distributed
      11                 :            :  * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
      12                 :            :  * express or implied. See the License for the specific language governing
      13                 :            :  * permissions and limitations under the License.
      14                 :            :  */
      15                 :            : 
      16                 :            : #include "utils/s2n_timer.h"
      17                 :            : 
      18                 :            : #include "tls/s2n_config.h"
      19                 :            : #include "utils/s2n_result.h"
      20                 :            : #include "utils/s2n_safety.h"
      21                 :            : 
      22                 :            : S2N_RESULT s2n_timer_start(struct s2n_config *config, struct s2n_timer *timer)
      23                 :     126263 : {
      24 [ -  + ][ #  # ]:     126263 :     RESULT_ENSURE(config->monotonic_clock(config->monotonic_clock_ctx, &timer->time) >= S2N_SUCCESS,
      25                 :     126263 :             S2N_ERR_CANCELLED);
      26                 :            : 
      27                 :     126263 :     return S2N_RESULT_OK;
      28                 :     126263 : }
      29                 :            : 
      30                 :            : S2N_RESULT s2n_timer_elapsed(struct s2n_config *config, struct s2n_timer *timer, uint64_t *nanoseconds)
      31                 :       5614 : {
      32                 :       5614 :     uint64_t current_time = 0;
      33                 :            : 
      34 [ -  + ][ #  # ]:       5614 :     RESULT_ENSURE(config->monotonic_clock(config->monotonic_clock_ctx, &current_time) >= S2N_SUCCESS,
      35                 :       5614 :             S2N_ERR_CANCELLED);
      36                 :            : 
      37                 :       5614 :     *nanoseconds = current_time - timer->time;
      38                 :            : 
      39                 :       5614 :     return S2N_RESULT_OK;
      40                 :       5614 : }
      41                 :            : 
      42                 :            : S2N_RESULT s2n_timer_reset(struct s2n_config *config, struct s2n_timer *timer, uint64_t *nanoseconds)
      43                 :          2 : {
      44                 :          2 :     uint64_t previous_time = timer->time;
      45                 :            : 
      46         [ -  + ]:          2 :     RESULT_GUARD(s2n_timer_start(config, timer));
      47                 :            : 
      48                 :          2 :     *nanoseconds = timer->time - previous_time;
      49                 :            : 
      50                 :          2 :     return S2N_RESULT_OK;
      51                 :          2 : }