Memory size is too large in TizenRT

[hs0225]

Look at the memory size of test_buffer.js,

Board	Memory Size
STM32	32840 Byte
RP2	33159 Byte
Artik053	4253768376 Byte

The memory size is abnormally large only in Artik053. We should measure it correctly.

[yichoi]

I would like to have proper measurement tool for memory usage dynamically

[rtakacs]

@hs0225: Could you please print the value of the stdout variable here?

[hs0225]

@rtakacs You can see the result here.

[zherczeg]

It seems only the allocated and peak allocated values are wrong. The rest of the allocations are 0 (I suppose this is printed at the end after everything is freed), and peak values are reasonable.

As far as I remember we use a hack to inject external allocation data into JerryScript memstats. Perhaps the injected data is wrong, and that is what @LaszloLango is talking about. Furthermore it seems to me that the injected numbers are kind of random, because there are big, but not too big numbers (e.g. 2813060968) are there.

[zherczeg]

@hs0225 does Tizen uses the allocator of nuttix or something else? Is it configured to use 4 or 2 byte sizes?

[rtakacs]

@zherczeg As I checked, TizenRT uses the same allocator than NuttX, but it extends the allocnode structure with other debug heap information. That is why the size is 16 bytes. #46 is a fix for this issue.