-
Rick Hudson authored
Prior to this CL the sweep phase was responsible for locating all objects that were about to be freed and calling a function to process the object. This was done by the function heapBitsSweepSpan. Part of processing included calls to tracefree and msanfree as well as counting how many objects were freed. The calls to tracefree and msanfree have been moved into the gcmalloc routine and called when the object is about to be reallocated. The counting of free objects has been optimized using an array based popcnt algorithm and if all the objects in a span are free then span is freed. Similarly the code to locate the next free object has been optimized to use an array based ctz (count trailing zero). Various hot paths in the allocation logic have been optimized. At this point the garbage benchmark is within 3% of the 1.6 release. Change-Id: I00643c442e2ada1685c010c3447e4ea8537d2dfa Reviewed-on: https://go-review.googlesource.com/20201Reviewed-by:
Austin Clements <austin@google.com>
8dda1c4c
Name |
Last commit
|
Last update |
---|---|---|
.github | ||
api | ||
doc | ||
lib/time | ||
misc | ||
src | ||
test | ||
.gitattributes | ||
.gitignore | ||
AUTHORS | ||
CONTRIBUTING.md | ||
CONTRIBUTORS | ||
LICENSE | ||
PATENTS | ||
README.md | ||
dev.garbage | ||
favicon.ico | ||
robots.txt |