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e8968e6bf4
This commit renames Module and ModuleOptions to context to avoid stutter confusion, e.g avoid having documentation that says things like instantiate the snapshot's module's module.
1.8 KiB
1.8 KiB
wasi
This module provides an implementation of the WebAssembly System Interface
Supported Syscalls
wasi_snapshot_preview1
- args_get
- args_sizes_get
- environ_get
- environ_sizes_get
- clock_res_get
- clock_time_get
- fd_advise
- fd_allocate
- fd_close
- fd_datasync
- fd_fdstat_get
- fd_fdstat_set_flags
- fd_fdstat_set_rights
- fd_filestat_get
- fd_filestat_set_size
- fd_filestat_set_times
- fd_pread
- fd_prestat_get
- fd_prestat_dir_name
- fd_pwrite
- fd_read
- fd_readdir
- fd_renumber
- fd_seek
- fd_sync
- fd_tell
- fd_write
- path_create_directory
- path_filestat_get
- path_filestat_set_times
- path_link
- path_open
- path_readlink
- path_remove_directory
- path_rename
- path_symlink
- path_unlink_file
- poll_oneoff
- proc_exit
- proc_raise
- sched_yield
- random_get
- sock_recv
- sock_send
- sock_shutdown
Usage
import Context from "https://deno.land/std/wasi/snapshot_preview1.ts";
const context = new Context({
args: Deno.args,
env: Deno.env,
});
const binary = await Deno.readFile("path/to/your/module.wasm");
const module = await WebAssembly.compile(binary);
const instance = await WebAssembly.instantiate(module, {
wasi_snapshot_preview1: context.exports,
});
context.memory = context.exports.memory;
if (module.exports._start) {
instance.exports._start();
} else if (module.exports._initialize) {
instance.exports._initialize();
} else {
throw new Error("No entry point found");
}
Testing
The test suite for this module spawns rustc processes to compile various example Rust programs. You must have wasm targets enabled:
rustup target add wasm32-wasi
rustup target add wasm32-unknown-unknown