tree e17f04ea79a74768e75144ef3361e9064a12b6e6
parent 677e6e5471b4d20270b8a7a839b6c0a961f7fc3e
author Joel Fernandes <joelaf@google.com> 1498421220 -0700
committer KP Singh <kpsingh@google.com> 1498770665 +0200

trappy: skip empty array regex sub for common case

I found that trappy spends a lot of time looking for the array pattern "{}".
Vast majority of trace lines don't have them. Instead of running the regex
every time, check for the ={} pattern using the 'in' operator which is much
faster than the regex for the common case, and then do the regex sub if needed.

The speed up is huge and in my test run, I saw parsing stage on a 100MB trace
speed up from 13s -> 10.5s !!

Change-Id: I7ae68efc99eaf8844624871be2a4d66a7820a9b0
Signed-off-by: Joel Fernandes <joelaf@google.com>
Reviewed-by: KP Singh <kpsingh@google.com>