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https://github.com/denoland/deno.git
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118 lines
3.8 KiB
Rust
118 lines
3.8 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::metrics::Metrics;
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use crate::permissions::Permissions;
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use deno_core::error::AnyError;
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use deno_core::serde_json;
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use deno_core::serde_json::json;
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use deno_core::serde_json::Value;
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use deno_core::ModuleSpecifier;
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use deno_core::OpState;
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use deno_core::ZeroCopyBuf;
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pub fn init(rt: &mut deno_core::JsRuntime, main_module: ModuleSpecifier) {
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{
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let op_state = rt.op_state();
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let mut state = op_state.borrow_mut();
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state.put::<ModuleSpecifier>(main_module);
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}
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super::reg_json_sync(rt, "op_main_module", op_main_module);
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super::reg_json_sync(rt, "op_metrics", op_metrics);
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}
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fn op_main_module(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let main = state.borrow::<ModuleSpecifier>().to_string();
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let main_url = ModuleSpecifier::resolve_url_or_path(&main)?;
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if main_url.as_url().scheme() == "file" {
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let main_path = std::env::current_dir().unwrap().join(main_url.to_string());
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state
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.borrow::<Permissions>()
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.check_read_blind(&main_path, "main_module")?;
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}
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Ok(json!(&main))
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}
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fn op_metrics(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let m = state.borrow::<Metrics>();
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Ok(json!({
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"opsDispatched": m.ops_dispatched,
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"opsDispatchedSync": m.ops_dispatched_sync,
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"opsDispatchedAsync": m.ops_dispatched_async,
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"opsDispatchedAsyncUnref": m.ops_dispatched_async_unref,
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"opsCompleted": m.ops_completed,
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"opsCompletedSync": m.ops_completed_sync,
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"opsCompletedAsync": m.ops_completed_async,
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"opsCompletedAsyncUnref": m.ops_completed_async_unref,
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"bytesSentControl": m.bytes_sent_control,
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"bytesSentData": m.bytes_sent_data,
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"bytesReceived": m.bytes_received
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}))
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}
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pub fn ppid() -> Value {
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#[cfg(windows)]
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{
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// Adopted from rustup:
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// https://github.com/rust-lang/rustup/blob/1.21.1/src/cli/self_update.rs#L1036
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// Copyright Diggory Blake, the Mozilla Corporation, and rustup contributors.
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// Licensed under either of
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// - Apache License, Version 2.0
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// - MIT license
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use std::mem;
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use winapi::shared::minwindef::DWORD;
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use winapi::um::handleapi::{CloseHandle, INVALID_HANDLE_VALUE};
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use winapi::um::processthreadsapi::GetCurrentProcessId;
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use winapi::um::tlhelp32::{
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CreateToolhelp32Snapshot, Process32First, Process32Next, PROCESSENTRY32,
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TH32CS_SNAPPROCESS,
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};
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unsafe {
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// Take a snapshot of system processes, one of which is ours
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// and contains our parent's pid
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let snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
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if snapshot == INVALID_HANDLE_VALUE {
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return serde_json::to_value(-1).unwrap();
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}
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let mut entry: PROCESSENTRY32 = mem::zeroed();
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entry.dwSize = mem::size_of::<PROCESSENTRY32>() as DWORD;
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// Iterate over system processes looking for ours
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let success = Process32First(snapshot, &mut entry);
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if success == 0 {
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CloseHandle(snapshot);
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return serde_json::to_value(-1).unwrap();
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}
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let this_pid = GetCurrentProcessId();
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while entry.th32ProcessID != this_pid {
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let success = Process32Next(snapshot, &mut entry);
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if success == 0 {
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CloseHandle(snapshot);
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return serde_json::to_value(-1).unwrap();
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}
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}
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CloseHandle(snapshot);
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// FIXME: Using the process ID exposes a race condition
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// wherein the parent process already exited and the OS
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// reassigned its ID.
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let parent_id = entry.th32ParentProcessID;
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serde_json::to_value(parent_id).unwrap()
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}
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}
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#[cfg(not(windows))]
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{
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use std::os::unix::process::parent_id;
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serde_json::to_value(parent_id()).unwrap()
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}
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}
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