[−][src]Module fluence_sdk::memory

Basic functions for dealing with Wasm memory.

This module contains functions for initializing and manipulating memory.

Modules

Contains definitions for memory errors.

Count of bytes that a string length representation in memory occupy. See write_str_to_mem method.

alloc ^⚠	Allocates memory area of specified size and returns its address. Actually is just a wrapper for `GlobalAlloc::alloc`.
dealloc ^⚠	Deallocates memory area for current memory pointer and size. Actually is just a wrapper for `GlobalAlloc::dealloc`.
deref_str ^⚠	Builds Rust string from the pointer and the length. Bytes copying doesn't occur, new String just wraps bytes around. Memory will be deallocated when the String will be dropped.
read_str_from_fat_ptr ^⚠	Reads Rust String from the raw memory. This operation is opposite of write_str_to_mem. Reads from the raw memory a string length as first STR_LEN_BYTES bytes and then reads string for this length. Deallocates first STR_LEN_BYTES bytes that corresponded string length and wraps the rest bytes into a Rust string.
write_str_to_mem ^⚠	Writes Rust string to the memory directly as string length and byte array. This method allocates new 'STR_LEN_BYTES + str.len()' bytes and writes the length of the string as first STR_LEN_BYTES bytes and then writes copy of 'str' after 'length' as a rest of the bytes.

Result type for this module.