[PATCH 0/3] commit: convert pop_most_recent_commit() to prio_queue

Use prio_queue to improve worst-case performance at the cost of slightly worse best-case performance. Then add and use prio_queue_replace() to recover that loss.

  commit: convert pop_most_recent_commit() to prio_queue
  prio-queue: add prio_queue_replace()
  commit: use prio_queue_replace() in pop_most_recent_commit()

 commit.c                          | 14 ++++++--
 commit.h                          |  8 ++---
 fetch-pack.c                      | 13 +++++---
 object-name.c                     | 10 +++---
 prio-queue.c                      | 45 +++++++++++++++++--------
 prio-queue.h                      |  8 +++++
 t/perf/p1501-rev-parse-oneline.sh | 55 +++++++++++++++++++++++++++++++
 t/unit-tests/u-prio-queue.c       | 23 +++++++++++++
 walker.c                          | 11 ++++---
 9 files changed, 153 insertions(+), 34 deletions(-)
 create mode 100755 t/perf/p1501-rev-parse-oneline.sh