)]}'
{
  "commit": "048655286a719ba8f7186a63f5802910c31901c1",
  "tree": "677512286839ae5ad65d27b0781c4fdb7fe3c9d6",
  "parents": [
    "b652a9f424a1ceeaa86efb77bc7c6c1cab84a2f8"
  ],
  "author": {
    "name": "Chris Kennelly",
    "email": "ckennelly@google.com",
    "time": "Sat Nov 07 09:00:18 2026 -0800"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Sat Nov 07 09:33:52 2026 -0800"
  },
  "message": "Sign-extend timestamp deltas in SpinLock::DecodeWaitCycles.\n\nThis prevents small negative CycleClock deltas between the sleeping waiter\u0027s\ncore and the unlocking holder\u0027s core from underflowing the 29-bit unsigned\ntimestamp in the lock word to ~2^36 cycles.  Interpret the 29-bit difference\nas signed so negative deltas decode as \u003c\u003d 0 and are ignored by SlowUnlock, and\nincrease kProfileTimestampShift from 7 to 8 to preserve the ~2^36-cycle\npositive range.\n\nPiperOrigin-RevId: 1016328794\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "57966d2c5288be254d34ff2b6a47a356a5203166",
      "old_mode": 33188,
      "old_path": "absl/base/internal/spinlock.cc",
      "new_id": "bc79c1ecccdd27dd21ab07c112d2cbcec40da9e5",
      "new_mode": 33188,
      "new_path": "absl/base/internal/spinlock.cc"
    },
    {
      "type": "modify",
      "old_id": "8ffc604e54139db106887a9787770189f30fbe8e",
      "old_mode": 33188,
      "old_path": "absl/base/spinlock_profiling_test.cc",
      "new_id": "c1f9622a4e9b2d697c4f218a82fcaf522dcb6b84",
      "new_mode": 33188,
      "new_path": "absl/base/spinlock_profiling_test.cc"
    },
    {
      "type": "modify",
      "old_id": "a29a7f51944e870ad43158e41f98ee2117003532",
      "old_mode": 33188,
      "old_path": "absl/base/spinlock_test_common.cc",
      "new_id": "1ffa03700b90943d169c37f20071dbdafae81f31",
      "new_mode": 33188,
      "new_path": "absl/base/spinlock_test_common.cc"
    }
  ]
}