1cc24690b8
mallocinit has evolved organically. Make a pass to clean it up in various ways: 1. Merge the computation of spansSize and bitmapSize. These were computed on every loop iteration of two different loops, but always have the same value, which can be derived directly from _MaxMem. This also avoids over-reserving these on MIPS, were _MaxArena32 is larger than _MaxMem. 2. Remove the ulimit -v logic. It's been disabled for many releases and the dead code paths to support it are even more wrong now than they were when it was first disabled, since now we *must* reserve spans and bitmaps for the full address space. 3. Make it clear that we're using a simple linear allocation to lay out the spans, bitmap, and arena spaces. Previously there were a lot of redundant pointer computations. Now we just bump p1 up as we reserve the spaces. In preparation for #18651. Updates #5049 (respect ulimit). Change-Id: Icbe66570d3a7a17bea227dc54fb3c4978b52a3af Reviewed-on: https://go-review.googlesource.com/35252 Reviewed-by: Russ Cox <rsc@golang.org> |
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