IABSD.fr/xenocara/lib/mesa/src/tool/pps/pps.cc

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• Author : jsg
  Date : 2023-11-02 04:31:01
  Hash : 60059fee
  Message : Import Mesa 23.1.9

• lib/mesa/src/tool/pps/pps.cc

• /*
   * Copyright © 2020 Collabora, Ltd.
   * Author: Antonio Caggiano <antonio.caggiano@collabora.com>
   *
   * SPDX-License-Identifier: MIT
   */
  
  #include "pps.h"
  
  #include <cerrno>
  #include <cstring>
  
  #include <sched.h>
  
  namespace pps
  {
  bool check(int res, const char *msg)
  {
     if (res < 0) {
        char *err_msg = std::strerror(errno);
        PERFETTO_ELOG("%s: %s", msg, err_msg);
        return false;
     }
  
     return true;
  }
  
  void make_thread_rt()
  {
     // Use FIFO policy to avoid preemption while collecting counters
     int sched_policy = SCHED_FIFO;
     // Do not use max priority to avoid starving migration and watchdog threads
     int priority_value = sched_get_priority_max(sched_policy) - 1;
     sched_param priority_param { priority_value };
     sched_setscheduler(0, sched_policy, &priority_param);
  }
  
  } // namespace pps