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%% SPDX-License-Identifier: Apache-2.0
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[;1m  is_process_alive(Pid)[0m

  [;;4mPid[0m must refer to a process at the local node.

  Returns [;;4mtrue[0m if the process exists and is alive, that is, is not
  exiting and has not exited. Otherwise returns [;;4mfalse[0m.

  If process [;;4mP1[0m calls [;;4mis_process_alive(P2Pid)[0m it is guaranteed
  that all signals, sent from [;;4mP1[0m to [;;4mP2[0m ([;;4mP2[0m is the process with
  identifier [;;4mP2Pid[0m) before the call, will be delivered to [;;4mP2[0m
  before the aliveness of [;;4mP2[0m is checked. This guarantee means that
  one can use [;;4mis_process_alive/1[0m to let a process [;;4mP1[0m wait until
  a process [;;4mP2[0m, which has got an exit signal with reason [;;4mkill[0m
  from P1, is killed.

  For example:

    exit(P2Pid, kill),
    % P2 might not be killed
    is_process_alive(P2Pid),
    % P2 is not alive (the call above always return false)

  See the documentation about signals and erlang:exit/2 for more
  information about signals and exit signals.
