diff options
Diffstat (limited to 'cli')
| -rw-r--r-- | cli/flags.rs | 24 | ||||
| -rw-r--r-- | cli/isolate_state.rs | 3 | ||||
| -rw-r--r-- | cli/msg.fbs | 4 | ||||
| -rw-r--r-- | cli/ops.rs | 32 | ||||
| -rw-r--r-- | cli/permissions.rs | 12 |
5 files changed, 67 insertions, 8 deletions
diff --git a/cli/flags.rs b/cli/flags.rs index e52e55b5e..9f43b0b80 100644 --- a/cli/flags.rs +++ b/cli/flags.rs @@ -19,6 +19,7 @@ pub struct DenoFlags { pub allow_net: bool, pub allow_env: bool, pub allow_run: bool, + pub allow_high_precision: bool, pub no_prompts: bool, pub types: bool, pub prefetch: bool, @@ -54,6 +55,9 @@ impl<'a> From<ArgMatches<'a>> for DenoFlags { if matches.is_present("allow-run") { flags.allow_run = true; } + if matches.is_present("allow-high-precision") { + flags.allow_high_precision = true; + } if matches.is_present("allow-all") { flags.allow_read = true; flags.allow_env = true; @@ -61,6 +65,7 @@ impl<'a> From<ArgMatches<'a>> for DenoFlags { flags.allow_run = true; flags.allow_read = true; flags.allow_write = true; + flags.allow_high_precision = true; } if matches.is_present("no-prompt") { flags.no_prompts = true; @@ -125,6 +130,10 @@ pub fn set_flags( .long("allow-run") .help("Allow running subprocesses"), ).arg( + Arg::with_name("allow-high-precision") + .long("allow-high-precision") + .help("Allow high precision time measurement"), + ).arg( Arg::with_name("allow-all") .short("A") .long("allow-all") @@ -338,6 +347,7 @@ fn test_set_flags_7() { allow_run: true, allow_read: true, allow_write: true, + allow_high_precision: true, ..DenoFlags::default() } ) @@ -356,3 +366,17 @@ fn test_set_flags_8() { } ) } + +#[test] +fn test_set_flags_9() { + let (flags, rest) = + set_flags(svec!["deno", "--allow-high-precision", "script.ts"]).unwrap(); + assert_eq!(rest, svec!["deno", "script.ts"]); + assert_eq!( + flags, + DenoFlags { + allow_high_precision: true, + ..DenoFlags::default() + } + ) +} diff --git a/cli/isolate_state.rs b/cli/isolate_state.rs index 500cdd7d7..313f4f6ce 100644 --- a/cli/isolate_state.rs +++ b/cli/isolate_state.rs @@ -17,6 +17,7 @@ use std::env; use std::sync::atomic::{AtomicUsize, Ordering}; use std::sync::Arc; use std::sync::Mutex; +use std::time::Instant; pub type WorkerSender = async_mpsc::Sender<Buf>; pub type WorkerReceiver = async_mpsc::Receiver<Buf>; @@ -51,6 +52,7 @@ pub struct IsolateState { pub global_timer: Mutex<GlobalTimer>, pub workers: Mutex<UserWorkerTable>, pub is_worker: bool, + pub start_time: Instant, } impl IsolateState { @@ -73,6 +75,7 @@ impl IsolateState { global_timer: Mutex::new(GlobalTimer::new()), workers: Mutex::new(UserWorkerTable::new()), is_worker, + start_time: Instant::now(), } } diff --git a/cli/msg.fbs b/cli/msg.fbs index c515b9add..4eca8dcf8 100644 --- a/cli/msg.fbs +++ b/cli/msg.fbs @@ -281,6 +281,7 @@ table PermissionsRes { write: bool; net: bool; env: bool; + high_precision: bool; } // Note this represents The WHOLE header of an http message, not just the key @@ -527,7 +528,8 @@ table RunStatusRes { table Now {} table NowRes { - time: uint64; + seconds: uint64; + subsec_nanos: uint32; } table IsTTY {} diff --git a/cli/ops.rs b/cli/ops.rs index a0169d6ab..d5656a3b6 100644 --- a/cli/ops.rs +++ b/cli/ops.rs @@ -41,7 +41,7 @@ use std::path::Path; use std::path::PathBuf; use std::process::Command; use std::sync::Arc; -use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH}; +use std::time::{Duration, Instant, UNIX_EPOCH}; use tokio; use tokio::net::TcpListener; use tokio::net::TcpStream; @@ -212,19 +212,35 @@ pub fn op_selector_std(inner_type: msg::Any) -> Option<OpCreator> { } } +// Returns a milliseconds and nanoseconds subsec +// since the start time of the deno runtime. +// If the High precision flag is not set, the +// nanoseconds are rounded on 2ms. fn op_now( - _sc: &IsolateStateContainer, + sc: &IsolateStateContainer, base: &msg::Base<'_>, data: deno_buf, ) -> Box<OpWithError> { assert_eq!(data.len(), 0); - let start = SystemTime::now(); - let since_the_epoch = start.duration_since(UNIX_EPOCH).unwrap(); - let time = since_the_epoch.as_secs() * 1000 - + u64::from(since_the_epoch.subsec_millis()); + let seconds = sc.state().start_time.elapsed().as_secs(); + let mut subsec_nanos = sc.state().start_time.elapsed().subsec_nanos(); + let reduced_time_precision = 2000000; // 2ms in nanoseconds + + // If the permission is not enabled + // Round the nano result on 2 milliseconds + // see: https://developer.mozilla.org/en-US/docs/Web/API/DOMHighResTimeStamp#Reduced_time_precision + if !sc.state().permissions.allows_high_precision() { + subsec_nanos -= subsec_nanos % reduced_time_precision + } let builder = &mut FlatBufferBuilder::new(); - let inner = msg::NowRes::create(builder, &msg::NowResArgs { time }); + let inner = msg::NowRes::create( + builder, + &msg::NowResArgs { + seconds, + subsec_nanos, + }, + ); ok_future(serialize_response( base.cmd_id(), builder, @@ -555,6 +571,7 @@ fn op_permissions( write: sc.state().permissions.allows_write(), net: sc.state().permissions.allows_net(), env: sc.state().permissions.allows_env(), + high_precision: sc.state().permissions.allows_high_precision(), }, ); ok_future(serialize_response( @@ -582,6 +599,7 @@ fn op_revoke_permission( "write" => sc.state().permissions.revoke_write(), "net" => sc.state().permissions.revoke_net(), "env" => sc.state().permissions.revoke_env(), + "highPrecision" => sc.state().permissions.revoke_high_precision(), _ => Ok(()), }; if let Err(e) = result { diff --git a/cli/permissions.rs b/cli/permissions.rs index 2240d94c1..6247cd0d1 100644 --- a/cli/permissions.rs +++ b/cli/permissions.rs @@ -131,6 +131,7 @@ pub struct DenoPermissions { pub allow_net: PermissionAccessor, pub allow_env: PermissionAccessor, pub allow_run: PermissionAccessor, + pub allow_high_precision: PermissionAccessor, pub no_prompts: AtomicBool, } @@ -142,6 +143,9 @@ impl DenoPermissions { allow_env: PermissionAccessor::from(flags.allow_env), allow_net: PermissionAccessor::from(flags.allow_net), allow_run: PermissionAccessor::from(flags.allow_run), + allow_high_precision: PermissionAccessor::from( + flags.allow_high_precision, + ), no_prompts: AtomicBool::new(flags.no_prompts), } } @@ -263,6 +267,10 @@ impl DenoPermissions { self.allow_env.is_allow() } + pub fn allows_high_precision(&self) -> bool { + return self.allow_high_precision.is_allow(); + } + pub fn revoke_run(&self) -> DenoResult<()> { self.allow_run.revoke(); Ok(()) @@ -287,6 +295,10 @@ impl DenoPermissions { self.allow_env.revoke(); Ok(()) } + pub fn revoke_high_precision(&self) -> DenoResult<()> { + self.allow_high_precision.revoke(); + return Ok(()); + } } /// Quad-state value for representing user input on permission prompt |