mcap/modules/Default_Allocator/LICENSES/MIT.txt
Musa Mahmood 22cad98500 [0.1.15] Startup: a catalog cache, the catalog on the background threads, rpmalloc, and [startup] timings
The catalog is kept in .catalog-cache in the library, each entry with the size and modified time of
the file it was read from; a start takes the entries whose file is unchanged from it and reads only
the rest. It is saved once the catalog is complete and has changed (at most every 30 s) and at
shutdown. After a reboot the catalog was complete 145 ms after launch, against 3.5 s reading every
file.

The catalog loads on the background Thread_Group, every worker of it, instead of the four preview
workers. rpmalloc (modules/Default_Allocator, 2.0.1-jai.16) takes the place of Jai's single locked
heap: entries from the cache 380 -> 50 ms, and reading the files now scales with threads.
thread_idle is called where workers idle. check_targets.jai checks other OSes with Jai's own
allocator, as rpmalloc runs at compile time with the target's OS layer.

-cold drops the library from the system's file cache first; -no-catalog-cache and -catalog-threads N
are for measuring. [startup] log lines time the listing, the first frame, the cache, the first
preview and the complete catalog.
2026-10-13 07:26:42 +01:00

22 lines
1.0 KiB
Plaintext

MIT License
Copyright (c) 2017 Mattias Jansson
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.