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| author | Björn-Egil Dahlberg <[email protected]> | 2016-04-09 00:54:40 +0200 |
|---|---|---|
| committer | Björn-Egil Dahlberg <[email protected]> | 2016-04-11 13:41:22 +0200 |
| commit | c56c6d36c3060e62925f036ad020da1753e48829 (patch) | |
| tree | 328063629d28cc113d026dbccfa9142be869f1f8 /HOWTO | |
| parent | 9e3d98d67a9fbc62aa54b3035b953eb94486cdf7 (diff) | |
| download | otp-c56c6d36c3060e62925f036ad020da1753e48829.tar.gz otp-c56c6d36c3060e62925f036ad020da1753e48829.tar.bz2 otp-c56c6d36c3060e62925f036ad020da1753e48829.zip | |
erts: Optimize '++' operator
This also optimizes the BIF lists:append/2
Use one pass to check for properness and copying LHS list.
If LHS turns out not being a proper list, bail and reset htop.
If we run out of heap, allocate a heap-fragment and calculate
the remaining length as normal, thus checking for properness,
and then continue copying.
Measurements shows this being ~50% faster.
Diffstat (limited to 'HOWTO')
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