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| author | Ben Noordhuis <info@bnoordhuis.nl> | 2015-07-27 23:29:03 +0200 |
|---|---|---|
| committer | Ben Noordhuis <info@bnoordhuis.nl> | 2015-07-28 00:13:30 +0200 |
| commit | 543dabb609226444fae0f9ed10f7b2360b6efda3 (patch) | |
| tree | 3fda08495f6b2021d5ad481e19bb0b47de8e074e /src/timer_wrap.cc | |
| parent | 3663b124e6edc6df7c076c28bbc41cdc208f8baa (diff) | |
| download | android-node-v8-543dabb609226444fae0f9ed10f7b2360b6efda3.tar.gz android-node-v8-543dabb609226444fae0f9ed10f7b2360b6efda3.tar.bz2 android-node-v8-543dabb609226444fae0f9ed10f7b2360b6efda3.zip | |
timers: improve Timer.now() performance
Record the start time so we can make the return value of Timer.now()
relative to it, increasing the chances that it fits in a tagged integer
instead of a heap-allocated double, at least for the first one or two
billion milliseconds.
PR-URL: https://github.com/nodejs/io.js/pull/2256
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Diffstat (limited to 'src/timer_wrap.cc')
| -rw-r--r-- | src/timer_wrap.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/timer_wrap.cc b/src/timer_wrap.cc index 3f2fff1fac..f3d5d1fedb 100644 --- a/src/timer_wrap.cc +++ b/src/timer_wrap.cc @@ -101,6 +101,8 @@ class TimerWrap : public HandleWrap { Environment* env = Environment::GetCurrent(args); uv_update_time(env->event_loop()); uint64_t now = uv_now(env->event_loop()); + CHECK(now >= env->timer_base()); + now -= env->timer_base(); if (now <= 0xfffffff) args.GetReturnValue().Set(static_cast<uint32_t>(now)); else |