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Pierre Langlois authored
When the 'disabled-by-default-v8.gc' category is enabled, emit an instant event with heap statistics after every GC. The data that's emitted is the same as what the V8 API gives you with `GetHeapStatistics()` and `GetHeapSpaceStatistics()`. We generate JSON with the following format: ``` { "isolate": "0x55dd5cf03b50", "id": 1, "time_ms": 42.619, "total_heap_size": 3981312, "total_heap_size_executable": 573440, "total_physical_size": 2820440, "total_available_size": 2195254440, "used_heap_size": 1799616, "heap_size_limit": 2197815296, "malloced_memory": 251024, "external_memory": 2981, "peak_malloced_memory": 589280, "spaces": [ { "name": "read_only_space", "size": 262144, "used_size": 32568, "available_size": 229256, "physical_size": 32888 }, { "name": "new_space", "size": 2097152, "used_size": 903392, "available_size": 143904, "physical_size": 1856136 }, ... ] } ``` Bug: v8:9186 Change-Id: I0d07aa37b65d45778d6b47dbe6e07a9dd25d1097 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619763Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Commit-Queue: Pierre Langlois <pierre.langlois@arm.com> Cr-Commit-Position: refs/heads/master@{#61667}
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