src/core/lib/transport/bdp_estimator.c

/*
 *
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 * this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "src/core/lib/transport/bdp_estimator.h"

#include <grpc/support/useful.h>

void grpc_bdp_estimator_init(grpc_bdp_estimator *estimator) {
  estimator->num_samples = 0;
  estimator->first_sample_idx = 0;
  estimator->sampling = false;
}

static int compare_samples(const void *a, const void *b) {
  return GPR_ICMP(*(int64_t *)a, *(int64_t *)b);
}

bool grpc_bdp_estimator_get_estimate(grpc_bdp_estimator *estimator,
                                     int64_t *estimate) {
  if (estimator->num_samples < GRPC_BDP_MIN_SAMPLES_FOR_ESTIMATE) {
    return false;
  }

  int64_t samples[GRPC_BDP_SAMPLES];
  for (uint8_t i = 0; i < estimator->num_samples; i++) {
    samples[i] =
        estimator
            ->samples[(estimator->first_sample_idx + i) % GRPC_BDP_SAMPLES];
  }
  qsort(samples, estimator->num_samples, sizeof(*samples), compare_samples);

  if (estimator->num_samples & 1) {
  } else {
  }
}