Simpleperf: use OneTimeFreeAllocator to allocate symbol names.
simpleperf report takes a lot of time mallocing and freeing memory.
This change reduces the time to free memory.
Before this change:
$sudo simpleperf stat simpleperf report
Performance counter statistics:
3,258,481,203 cpu-cycles # 2.290946 GHz (80%)
4,147,660,154 instructions # 0.785619 cycles per instruction (79%)
Total test time: 1.422330 seconds.
After this change:
$sudo simpleperf stat simpleperf report
Performance counter statistics:
1,699,221,386 cpu-cycles # 2.994754 GHz (79%)
2,739,945,156 instructions # 0.620166 cycles per instruction (81%)
Total test time: 0.567399 seconds.
This change also fix a bug in record_file_test.cpp.
Bug:
23387541
Change-Id: I59fc86ca54a6c09bd08eec8ada931ccff88d3102