69fd008199
This is a stand-alone helper class for writing properly structured JSON to an SkWStream. It currently solves two problems (although this CL only uses it in one context): 1) Performance. Writing out JSON this way is about 10x faster than using JSONCPP. For the large amounts of data generated by the tracing system, that's a big win. 2) Makes it easy to emit structured JSON from code that's not fully centralized. We'd like to spit out JSON that describes a GrContext, GrGpu, GrCaps, etc... Doing that with simple string manipulation is complex, and spreads this logic over all those functions. Using JSONCPP adds yet another (large) third party library dependency (that we only build into our own tools right now). This went through several revisions. I originally planned it as a stateful SkString wrapper, so the user could just build their JSON as a string. That's O(N^2), though, because SkString grows by a (small) constant amount. Even using a better growth strategy still means needing RAM for all the resulting text, which is usually pointless. This version has a constant memory cost, so writing huge amounts of JSON to disk (tracing a long DM run can emit 100's of MBs) doesn't stress resources. Bug: skia: Change-Id: Ia716524b246db0f97d332da60d2ce9903069e748 Reviewed-on: https://skia-review.googlesource.com/31204 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: Mike Klein <mtklein@chromium.org> |
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| bin | ||
| debugger | ||
| dm | ||
| docs | ||
| example | ||
| experimental | ||
| fuzz | ||
| gm | ||
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| include | ||
| infra | ||
| platform_tools | ||
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| samplecode | ||
| site | ||
| src | ||
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| third_party | ||
| tools | ||
| .clang-format | ||
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| BUILD.gn | ||
| codereview.settings | ||
| CONTRIBUTING | ||
| CQ_COMMITTERS | ||
| DEPS | ||
| Doxyfile | ||
| LICENSE | ||
| PRESUBMIT.py | ||
| public.bzl | ||
| README | ||
| README.chromium | ||
| whitespace.txt | ||
Skia is a complete 2D graphic library for drawing Text, Geometries, and Images. See full details, and build instructions, at https://skia.org.