Mirrors/fish-shell
2
0
Fork 0
mirror of https://github.com/fish-shell/fish-shell synced 2024-12-25 20:33:08 +00:00
Code Issues Projects Releases Packages Wiki Activity

Don't spawn keepalive for WSL when only one command

Browse source 
This should speed things up on slower PCs given that the vast majority
of shell commands are simple jobs consisting of a single command without
any pipelines, in which case there's no need for a keepalive process at
all. Applies to WSL only.
This commit is contained in:
Mahmoud Al-Qudsi 2018-03-04 21:54:12 -06:00
parent 000892e315
commit 2f2a221c56
1 changed files with 8 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/exec.cpp
View file

@ -577,15 +577,17 @@ void exec_job(parser_t &parser, job_t *j) {
needs_keepalive = true;
break;
}
// When running under WSL, create a keepalive process unconditionally if our first process is external.
// This is because WSL does not permit joining the pgrp of an exited process.
// (see https://github.com/Microsoft/WSL/issues/2786), also fish PR #4676
if (is_windows_subsystem_for_linux() && j->processes.front()->type == EXTERNAL
&& !p->is_first_in_job) { //but not if it's the only process
needs_keepalive = true;
break;
}
}
}
// When running under WSL, create a keepalive process unconditionally if our first process is external.
// This is because WSL does not permit joining the pgrp of an exited process.
// (see https://github.com/Microsoft/WSL/issues/2786), also fish PR #4676
if (j->processes.front()->type == EXTERNAL && is_windows_subsystem_for_linux())
needs_keepalive = true;
if (needs_keepalive) {
// Call fork. No need to wait for threads since our use is confined and simple.
pid_t parent_pid = getpid();