On Wed, Feb 18, 2015 at 6:09 PM, obastemur <obaste...@gmail.com> wrote: > Some hours ago, we've released jxcore on github (a nodejs distro with > SpiderMonkey) (https://github.com/jxcore/jxcore).. > > Thanks for this great JavaScript engine though! > > Showing the heap memory usage from underlying engine is one of the very few > things left I'm trying to do with SpiderMonkey. Is there an easy way? or I > should wrap JS_malloc/JS_free methods ? (If it makes sense?)
If you just want to wrap allocation/deallocation, #define JS_USE_CUSTOM_ALLOCATOR and provide a jscustomallocator.h function that implements js_malloc, js_calloc, js_realloc, js_free and js_strdup -- see public/Utility for details. If you want more detailed measurements, look at public/MemoryMetrics.h, which provides a huge amount of detail and is used as the basis for the JS measurements available in Firefox's about:memory. The entry point is CollectRuntimeStats(). You'll need to provide a mozilla::MallocSizeOf function (via RuntimeStats) that works something like malloc_usable_size(). You'll be able to (and likely should) use nullptr for the ObjectPrivateVisitor argument. Hope this helps. Nick _______________________________________________ dev-tech-js-engine-internals mailing list dev-tech-js-engine-internals@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-tech-js-engine-internals
