In a following patch, all DevTools moz.build files will use DevToolsModules to
install JS modules at a path that corresponds directly to their source tree
location. Here we rewrite all require and import calls to match the new
location that these files are installed to.
Move major DevTools files to new directories using the following steps:
hg mv browser/devtools devtools/client
hg mv toolkit/devtools/server devtools/server
hg mv toolkit/devtools devtools/shared
No other changes are made.
This performs the update check for system add-ons. It runs as part of the daily
add-on update checks similar to hotfix checks. Currently no URL is set so builds
won't actually start checking yet.
I've taken a few shortcuts here by only staging updates and needing a restart to
install as well as always downloading updates rather than using existing local
copies. At least the latter probably needs fixing before turning this on but
it makes more sense to iterate on those in tree.
The system add-on update checks will use the same update.xml format as GMP so
this splits out the code for parsing and downloading files into a standalone
module that both can reuse.
The GMP manager uses a copy of the update service's url formatting code and has
since fallen out of sync. We'll also want to use the same formatting code for
the system add-on update checks so this just exposes it in a shared API.
I've moved the contents of UpdateChannel.jsm to UpdateUtils.jsm and exposed
formatUpdateURL there as well as a few properties that the update service still
needs access to.
UpdateUtils.UpdateChannel is intended to be a lazy getter but isn't for now
since tests expect to be able to change the update channel at runtime.
Jemalloc 4 purges dirty pages regularly during free() when the ratio of dirty
pages compared to active pages is higher than 1 << lg_dirty_mult. We set
lg_dirty_mult in jemalloc_config to limit RSS usage, but it also has an impact
on performance.
So instead of enforcing a high ratio to force more pages being purged, we keep
jemalloc's default ratio of 8, and force a regular purge of all dirty pages,
after cycle collection.
Keeping jemalloc's default ratio avoids cycle-collection-triggered purge to
have to go through really all dirty pages when there are a lot, in which case
the normal jemalloc purge during free() will already have kicked in. It also
takes care of everything that doesn't run the cycle collector still having
a level of purge, like plugins in the plugin-container.
At the same time, since jemalloc_purge_freed_pages does nothing with jemalloc 4,
repurpose the MEMORY_FREE_PURGED_PAGES_MS telemetry probe to track the time
spent in this cycle-collector-triggered purge.
