Do not query CPU data when querying process data (#845)

* Do not query CPU data when querying process data

Fixes #839
Ref https://github.com/GuillaumeGomez/sysinfo/issues/632

* Update branch of sysinfo

* Update upstream sysinfo commit

Ref https://github.com/GuillaumeGomez/sysinfo/pull/636

* Point sysinfo at an explicit commit rather than a symbolic branch name

commit d647acfbf216848a8237e1f9251b2c48860a547f
Merge: 989ac6c 67a586c
Author: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date:   2 hours ago

    Merge pull request #636 from GuillaumeGomez/update-if-needed

    Only update processors if needed

3 files changed, 9 insertions, 7 deletions

diff --git a/Cargo.lock b/Cargo.lock
index c01df240..4b8b476a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1053,9 +1053,8 @@ dependencies = [
 
 [[package]]
 name = "sysinfo"
-version = "0.20.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e223c65cd36b485a34c2ce6e38efa40777d31c4166d9076030c74cdcf971679f"
+version = "0.21.2"
+source = "git+https://github.com/GuillaumeGomez/sysinfo#d647acfbf216848a8237e1f9251b2c48860a547f"
 dependencies = [
  "cfg-if 1.0.0",
  "core-foundation-sys",
diff --git a/Cargo.toml b/Cargo.toml
index 1d44112f..355a9408 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -53,7 +53,8 @@ default-features = false
 features = ["parsing", "assets", "yaml-load", "dump-load", "regex-onig"]
 
 [dependencies.sysinfo]
-version = "0.20.5"
+git = "https://github.com/GuillaumeGomez/sysinfo"
+commit = "d647acfbf216848a8237e1f9251b2c48860a547f"
 # no default features to disable the use of threads
 default-features = false
 features = []
diff --git a/src/utils/process.rs b/src/utils/process.rs
index 5602dd3f..68b57a6a 100644
--- a/src/utils/process.rs
+++ b/src/utils/process.rs
@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 use std::collections::{HashMap, HashSet};
 use std::path::Path;
-use sysinfo::{Pid, Process, ProcessExt, SystemExt};
+use sysinfo::{Pid, Process, ProcessExt, ProcessRefreshKind, SystemExt};
 
 use lazy_static::lazy_static;
 
@@ -347,7 +347,8 @@ impl ProcessInterface for ProcInfo {
         std::process::id() as Pid
     }
     fn refresh_process(&mut self, pid: Pid) -> bool {
-        self.info.refresh_process(pid)
+        self.info
+            .refresh_process_specifics(pid, ProcessRefreshKind::new())
     }
     fn process(&self, pid: Pid) -> Option<&Self::Out> {
         self.info.process(pid)
@@ -356,7 +357,8 @@ impl ProcessInterface for ProcInfo {
         self.info.processes()
     }
     fn refresh_processes(&mut self) {
-        self.info.refresh_processes()
+        self.info
+            .refresh_processes_specifics(ProcessRefreshKind::new())
     }
 }