performanceEntry.flags
此属性是 Node.js 的扩展。它在 Web 浏览器中不可用。
¥This property is an extension by Node.js. It is not available in Web browsers.
当 performanceEntry.entryType 等于 'gc' 时,则 performance.flags 属性包含有关垃圾收集操作的附加信息。该值可能是以下之一:
¥When performanceEntry.entryType is equal to 'gc', the performance.flags
property contains additional information about garbage collection operation.
The value may be one of:
-
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_NO -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_FORCED -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY -
perf_hooks.constants.NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE