)]}'
{
  "commit": "767b018158202e711c9ea6bc8710dafbb87f5351",
  "tree": "bf22420660f0987278e9d2b441aa011142983611",
  "parents": [
    "8fb9488890264bcb4f468604b84f2e301b2cd61f"
  ],
  "author": {
    "name": "Chris Kennelly CA",
    "email": "ckennelly@google.com",
    "time": "Fri Oct 23 16:11:40 2026 -0700"
  },
  "committer": {
    "name": "Copybara-Service",
    "email": "copybara-worker@google.com",
    "time": "Fri Oct 23 16:44:59 2026 -0700"
  },
  "message": "Report contended absl::call_once waits via SubmitLockWait.\n\nCallOnceImpl already uses SpinLockWait when initialization is in progress on another thread. Expose SpinLock\u0027s lock-wait reporting helper as base_internal::SubmitLockWait (keeping the TSan mutex ignore-region diversion in SpinLock::SlowLock) and measure CycleClock::Now() around SpinLockWait on the contended slow path so RegisterSpinLockLockProfiler captures contended absl::call_once and LowLevelCallOnce waits without adding overhead to the initialized fast path or uncontended initialization.\n\nPiperOrigin-RevId: 1005937528\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "58d5d23797aada0f25efeeffdbb0efb6326999fb",
      "old_mode": 33188,
      "old_path": "absl/base/call_once.h",
      "new_id": "f44ee38b3c447d0ad17a80b530c5e4c46b07fc74",
      "new_mode": 33188,
      "new_path": "absl/base/call_once.h"
    },
    {
      "type": "modify",
      "old_id": "d9c96871a617fa332e8e5bce278074a784c8022e",
      "old_mode": 33188,
      "old_path": "absl/base/internal/spinlock.cc",
      "new_id": "19befaac481003a74316fdab9edf7e079e5623d6",
      "new_mode": 33188,
      "new_path": "absl/base/internal/spinlock.cc"
    },
    {
      "type": "modify",
      "old_id": "82a91ad96aa7ee6ee82f4cc865740fd0e6df9a5e",
      "old_mode": 33188,
      "old_path": "absl/base/internal/spinlock.h",
      "new_id": "da7843ba7f164051928e7ddf75134f40751d02e4",
      "new_mode": 33188,
      "new_path": "absl/base/internal/spinlock.h"
    },
    {
      "type": "modify",
      "old_id": "16c1e2abacf2417e05a57229a753f8efde14594b",
      "old_mode": 33188,
      "old_path": "absl/base/spinlock_profiling_test.cc",
      "new_id": "48abbe08afcfe8b40fad585e8b0082438d79222c",
      "new_mode": 33188,
      "new_path": "absl/base/spinlock_profiling_test.cc"
    }
  ]
}