)]}'
{
  "commit": "98f6dd2be85d0eba8f31ee3ad1def5402383cff3",
  "tree": "c59c9fd18867e0150ea478a8f0be41e273221482",
  "parents": [
    "d3d07d398e3c682afa103b0c6db29b16cd83b098"
  ],
  "author": {
    "name": "Matt Stark",
    "email": "msta@google.com",
    "time": "Thu Oct 29 11:57:11 2026 +1100"
  },
  "committer": {
    "name": "gn-scoped@luci-project-accounts.iam.gserviceaccount.com",
    "email": "gn-scoped@luci-project-accounts.iam.gserviceaccount.com",
    "time": "Wed Oct 28 19:11:42 2026 -0700"
  },
  "message": "Improve performance of StringOutputBuffer.\n\nStringOutputBuffer previously used a (start, size, capacity) representation\nfor the current read-write page, updating an offset index on each write.\nThis had two main drawbacks:\n1) Every write required base + offset address recalculations.\n2) Writable::WriteToBuf took a `size_t\u0026 upto` parameter alongside the\n   `char buf[]`, creating a strict-aliasing hazard.\n\nThis change optimizes StringOutputBuffer:\n- Adopts a 3-pointer cursor representation (rw_buf_, cur_, end_). In the\n  hot path, writes only advance cur_, keeping the write pointer directly\n  in CPU registers across chained writes.\n- Updates Writable and WriteToBuf to take and return a char*, eliminating\n  both the aliasing hazard and offset arithmetic.\n- Splits Reserve into an inlined fast-path check (zero function calls on\n  the hot path) and an out-of-line ReserveSlow for page rollover.\n- Removes redundant state (ro_size_ and rw_capacity_), computing total\n  size on demand.\n- Simplifies str(), WriteToFile(), and ContentsEqual() to stream the\n  active page using direct pointer ranges.\n\nChange-Id: I56da598fa9acfe31443b2049bbcd48e66a6a6964\nReviewed-on: https://gn-review.googlesource.com/c/gn/+/28180\nReviewed-by: Takuto Ikuta \u003ctikuta@google.com\u003e\nCommit-Queue: Matt Stark \u003cmsta@google.com\u003e\n",
  "tree_diff": [
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}