| Age | Commit message (Collapse) | Author |
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Make sure the context used for timeouts isn't created based on the incoming
context, as we have cases where this can cancel the context prematurely.
Fixes #10789
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Note that this is backed by a LRU cache (which we soon shall see more usage of), so if you're a heavy user of cached partials it may be evicted and
refreshed if needed. But in most cases every partial is only invoked once.
This commit also adds a timeout (the global `timeout` config option) to make infinite recursion in partials
easier to reason about.
```
name old time/op new time/op delta
IncludeCached-10 8.92ms ± 0% 8.48ms ± 1% -4.87% (p=0.016 n=4+5)
name old alloc/op new alloc/op delta
IncludeCached-10 6.65MB ± 0% 5.17MB ± 0% -22.32% (p=0.002 n=6+6)
name old allocs/op new allocs/op delta
IncludeCached-10 117k ± 0% 71k ± 0% -39.44% (p=0.002 n=6+6)
```
Closes #4086
Updates #9588
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This is a rollback of 0927cf739fee9646c7fb917965799d9acf080922
We cannot do that change until we either completes #9570 or possibly also use the new TryLock in GO 1.18.
Fixes #9588
Opens #4086
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The change in lock logic for `partialCached` in 0927cf739fee9646c7fb917965799d9acf080922 was naive as it didn't consider cached partials calling other cached partials.
This changeset may look on the large side for this particular issue, but it pulls in part of a working branch, introducing `context.Context` in the template execution.
Note that the context is only partially implemented in this PR, but the upcoming use cases will, as one example, include having access to the top "dot" (e.g. `Page`) all the way down into partials and shortcodes etc.
The earlier benchmarks rerun against master:
```bash
name old time/op new time/op delta
IncludeCached-10 13.6ms ± 2% 13.8ms ± 1% ~ (p=0.343 n=4+4)
name old alloc/op new alloc/op delta
IncludeCached-10 5.30MB ± 0% 5.35MB ± 0% +0.96% (p=0.029 n=4+4)
name old allocs/op new allocs/op delta
IncludeCached-10 74.7k ± 0% 75.3k ± 0% +0.77% (p=0.029 n=4+4)
```
Fixes #9519
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This commit revises the locking strategy for `partialCached`. We have added a benchmark that may be a little artificial, but it should at least show that we're not losing any performance over this:
```bash
name old time/op new time/op delta
IncludeCached-10 12.2ms ± 2% 11.3ms ± 1% -7.36% (p=0.029 n=4+4)
name old alloc/op new alloc/op delta
IncludeCached-10 7.17MB ± 0% 5.09MB ± 0% -29.00% (p=0.029 n=4+4)
name old allocs/op new allocs/op delta
IncludeCached-10 128k ± 1% 70k ± 0% -45.42% (p=0.029 n=4+4)
```
This commit also revises the template metrics hints logic a little, and add a test for it, which output is currently this:
```bash
cumulative average maximum cache percent cached total
duration duration duration potential cached count count template
---------- -------- -------- --------- ------- ------ ----- --------
163.334µs 163.334µs 163.334µs 0 0 0 1 index.html
23.749µs 5.937µs 19.916µs 25 50 2 4 partials/dynamic1.html
9.625µs 4.812µs 6.75µs 100 50 1 2 partials/static1.html
7.625µs 7.625µs 7.625µs 100 0 0 1 partials/static2.html
```
Some notes:
* The duration now includes the cached invocations (which should be very short)
* A cached template gets executed once before it gets cached, so the "percent cached" will never be 100.
Fixes #4086
Fixes #9506
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Track cached partial executions and display more useful info when
showing the hints output. Also group cache hints and counters together
to the right of the timing measurements.
Sample output:
cumulative average maximum cache percent cached total
duration duration duration potential cached count count template
---------- -------- -------- --------- ------- ------ ----- --------
2.6973ms 674.325µs 857.3µs 0 0 0 4 _internal/_default/rss.xml
2.6295ms 657.375µs 861.3µs 0 0 0 4 _default/single.html
1.2563ms 314.075µs 381.5µs 0 0 0 4 news/single.html
799.2µs 399.6µs 573.3µs 0 0 0 2 _internal/_default/sitemap.xml
667.3µs 66.73µs 238.6µs 84 0 0 10 partials/header.html
656.7µs 328.35µs 459.4µs 0 0 0 2 _default/list.html
479.7µs 47.97µs 158µs 92 0 0 10 partials/head.html
323.3µs 323.3µs 323.3µs 0 0 0 1 _internal/alias.html
200.7µs 200.7µs 200.7µs 0 0 0 1 _internal/_default/sitemapindex.xml
36.1µs 6.016µs 32.6µs 100 33 2 6 partials/footer.html
27.4µs 13.7µs 26.7µs 0 0 0 2 index.html
Fixes #8375
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