)]}'
{
  "commit": "318ec1d2db43c1dc1e1810afb8e7fe524d7a64f2",
  "tree": "cf58e1347bbffe9f8f075820fbfdcccff43bb561",
  "parents": [
    "18d8e6dca7d74c240aabf9f44eea540ae565efb2"
  ],
  "author": {
    "name": "Takuto Ikuta",
    "email": "tikuta@google.com",
    "time": "Thu Feb 19 19:13:31 2026 +0900"
  },
  "committer": {
    "name": "GN LUCI",
    "email": "gn-scoped@luci-project-accounts.iam.gserviceaccount.com",
    "time": "Thu Feb 19 03:48:41 2026 -0800"
  },
  "message": "Optimize HeaderChecker::IsDependencyOf using HashTableBase\n\nThis improved performance of `gn gen --check` from 55.7s to 21.7s on my\nM4 Max macbook as memory allocation in unordered_map seems slow on\nmacOS.\n\nBug: 484862257\nChange-Id: I688c316c72938087d65ad5487f554b10665a29e3\nReviewed-on: https://gn-review.googlesource.com/c/gn/+/21120\nCommit-Queue: Takuto Ikuta \u003ctikuta@google.com\u003e\nReviewed-by: David Turner \u003cdigit@google.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "ea76f2f5bb563c32456d9ec9091213cce2af84f4",
      "old_mode": 33188,
      "old_path": "src/gn/header_checker.cc",
      "new_id": "d3635915034ac2205c8480dad0f9b7d46e04f344",
      "new_mode": 33188,
      "new_path": "src/gn/header_checker.cc"
    }
  ]
}