"sleeping barber problem" meaning in English

{
  "etymology_text": "By analogy with a barber who sleeps while not cutting hair, and whose customers wake him on arrival. Since actions such as entering the salon and looking around take variable amounts of time, this may lead to a situation where both barber and customer(s) are futilely waiting for each other.",
  "forms": [
    {
      "form": "sleeping barber problems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sleeping barber problem (plural sleeping barber problems)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Theory of computing",
          "orig": "en:Theory of computing",
          "parents": [
            "Computer science",
            "Computing",
            "Sciences",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A problem of interprocess communication and synchronization where one process responds to requests from multiple other threads and sleeps when not doing so. In some cases this may lead to an undesirable state where components are waiting for each other despite being ready."
      ],
      "id": "en-sleeping_barber_problem-en-noun-RMED3gyM",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "theory",
          "theory"
        ],
        [
          "interprocess",
          "interprocess"
        ],
        [
          "communication",
          "communication"
        ],
        [
          "synchronization",
          "synchronization"
        ],
        [
          "request",
          "request"
        ],
        [
          "thread",
          "thread"
        ],
        [
          "sleep",
          "sleep"
        ]
      ],
      "raw_glosses": [
        "(computing theory) A problem of interprocess communication and synchronization where one process responds to requests from multiple other threads and sleeps when not doing so. In some cases this may lead to an undesirable state where components are waiting for each other despite being ready."
      ],
      "topics": [
        "computing",
        "computing-theory",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "sleeping barber problem"
      ]
    }
  ],
  "word": "sleeping barber problem"
}

{
  "etymology_text": "By analogy with a barber who sleeps while not cutting hair, and whose customers wake him on arrival. Since actions such as entering the salon and looking around take variable amounts of time, this may lead to a situation where both barber and customer(s) are futilely waiting for each other.",
  "forms": [
    {
      "form": "sleeping barber problems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sleeping barber problem (plural sleeping barber problems)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Theory of computing"
      ],
      "glosses": [
        "A problem of interprocess communication and synchronization where one process responds to requests from multiple other threads and sleeps when not doing so. In some cases this may lead to an undesirable state where components are waiting for each other despite being ready."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "theory",
          "theory"
        ],
        [
          "interprocess",
          "interprocess"
        ],
        [
          "communication",
          "communication"
        ],
        [
          "synchronization",
          "synchronization"
        ],
        [
          "request",
          "request"
        ],
        [
          "thread",
          "thread"
        ],
        [
          "sleep",
          "sleep"
        ]
      ],
      "raw_glosses": [
        "(computing theory) A problem of interprocess communication and synchronization where one process responds to requests from multiple other threads and sleeps when not doing so. In some cases this may lead to an undesirable state where components are waiting for each other despite being ready."
      ],
      "topics": [
        "computing",
        "computing-theory",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ],
      "wikipedia": [
        "sleeping barber problem"
      ]
    }
  ],
  "word": "sleeping barber problem"
}