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16b0da5004
Implement discarding Document objects to reclaim space. <!-- Please describe your changes on the following line: --> This PR implements document discarding. Active documents are kept alive strongly, but inactive documents are only kept alive weakly. When a document is GCd, it is marked as discarded, and if it is every reactivated, a reload of the URL is triggered. Note that this PR is pretty aggressive about discarding, and can any inactive document (other than those being kept alive by other same-origin pipelines). We might want to damp it down a bit. Also note that this interacts with browser.html in that the reloading triggered by reactivating a document triggers mozbrowser events. To test this, I added a `-Zdiscard-inactive-documents` debug flag, which discards all inactive documents, even ones which are reachable through other same-origin pipelines. --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #14262. - [X] These changes do not require tests because we should be able to use the existing tests with `-Zdiscard-inactive-documents`. <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> <!-- Reviewable:start --> --- This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/14312) <!-- Reviewable:end --> |
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| .. | ||
| atoms | ||
| bluetooth | ||
| bluetooth_traits | ||
| canvas | ||
| canvas_traits | ||
| compositing | ||
| config | ||
| constellation | ||
| debugger | ||
| devtools | ||
| devtools_traits | ||
| geometry | ||
| gfx | ||
| gfx_traits | ||
| jstraceable_derive | ||
| layout | ||
| layout_thread | ||
| layout_traits | ||
| msg | ||
| net | ||
| net_traits | ||
| plugins | ||
| profile | ||
| profile_traits | ||
| range | ||
| remutex | ||
| script | ||
| script_layout_interface | ||
| script_traits | ||
| servo | ||
| style | ||
| style_traits | ||
| url | ||
| webdriver_server | ||
