[0050] VM Syscalls 3

[zhangsoledad]

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[yangby-cryptape]

If I understood correctly, all M in this RFC means $2^{20}$; strictly speaking, they should be Mi.

According to "ISO/IEC 80000":

• M is "mega", it's a metric prefix, it means $10^{6}$.
• To represent $2^{20}$, IEC prefix Mi should be used, it's short for "mebi", defined in "IEC 60027-2".

[mohanson]

Please add the introduction of Current Memory syscall

Current Memory

Get the Current Memory Usage. The result is the sum of the memory usage of the parent script and the child script.

int ckb_current_memory();

The system call returns an integer. Multiply it by 0.5 to get the actual memory usage (unit: megabytes)

[zhangsoledad]

Please add the introduction of Current Memory syscall

Current Memory

Get the Current Memory Usage. The result is the sum of the memory usage of the parent script and the child script.

int ckb_current_memory();

The system call returns an integer. Multiply it by 0.5 to get the actual memory usage (unit: megabytes)

Already added, please review