parallel: Better /proc/cpuinfo parser.

10seconds_install

@@ -15,7 +15,7 @@
 # If that fails, it copies to $HOME/bin
 #
 # You can download and run the script directly by:
-#   (wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash
+#   (lynx -source pi.dk/3 || wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash
 
 run() {
     # tail on openindiana must be /usr/xpg4/bin/tail
@@ -26,10 +26,11 @@ run() {
 		      (echo | /usr/xpg4/bin/grep -vE . && echo /usr/xpg4/bin/grep))
     # FreeBSD prefers 'fetch', MacOS prefers 'curl', Linux prefers 'wget'
     GET=$(
+	(lynx -source /dev/null && echo lynx -source) ||
 	    (fetch -o /dev/null file:///bin/sh && echo fetch -o -) ||
 	    (curl -h >/dev/null && echo curl -L) ||
 	    (wget -h >/dev/null && echo wget -qO -) ||
-	    echo 'No wget, curl, fetch: Please inform parallel@gnu.org what you use for downloading URLs' >&2
+	    echo 'No lynx, wget, curl, fetch: Please inform parallel@gnu.org what you use for downloading URLs' >&2
        )
     if test "$GET" = ""; then
 	exit 1

doc/release_new_version

@@ -206,7 +206,7 @@ from:tange@gnu.org
 to:parallel@gnu.org, bug-parallel@gnu.org
 stable-bcc: Jesse Alama <jessealama@fastmail.fm>
 
-Subject: GNU Parallel 20181222 ('Kilogram/brexitdeal/Stan Lee/Cesar Sayoc/Tree of Life/Iran') released <<[stable]>>
+Subject: GNU Parallel 20181222 ('InSight') released <<[stable]>>
 
 GNU Parallel 20181222 ('') <<[stable]>> has been released. It is available for download at: http://ftpmirror.gnu.org/parallel/
 
@@ -235,7 +235,8 @@ GNU Parallel makes sure output from the commands is the same output as you would
 
 You can find more about GNU Parallel at: http://www.gnu.org/s/parallel/
 
-You can install GNU Parallel in just 10 seconds with: (wget -O - pi.dk/3 || curl pi.dk/3/) | bash
+You can install GNU Parallel in just 10 seconds with:
+(wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash
 
 Watch the intro video on http://www.youtube.com/playlist?list=PL284C9FF2488BC6D1
 

src/parallel

@@ -6575,28 +6575,38 @@ sub sct_gnu_linux() {
     #     'active' => #taskset_threads }
     my $cpu;
     local $/ = "\n"; # If delimiter is set, then $/ will be wrong
-    if(-e "/proc/cpuinfo") {
+    if($ENV{'PARALLEL_CPUINFO'} or -e "/proc/cpuinfo") {
 	$cpu->{'sockets'} = 0;
 	$cpu->{'cores'} = 0;
 	$cpu->{'threads'} = 0;
 	my %seen;
 	my %phy_seen;
+	my @cpuinfo;
+	my $physicalid;
 	if(open(my $in_fh, "<", "/proc/cpuinfo")) {
-	    while(<$in_fh>) {
+	    @cpuinfo = <$in_fh>;
-		if(/^physical id.*[:](.*)/ and not $phy_seen{$1}++) {
+	    close $in_fh;
+	}
+	if($ENV{'PARALLEL_CPUINFO'}) {
+	    # Use CPUINFO from environment - used for testing only
+	    @cpuinfo = split/(?<=\n)/,$ENV{'PARALLEL_CPUINFO'};
+	}
+	for(@cpuinfo) {
+	    if(/^physical id.*[:](.*)/) {
+		$physicalid=$1;
+		if(not $phy_seen{$1}++) {
 		    $cpu->{'sockets'}++;
 		}
-		if(/^core id.*[:](.*)/ and not $seen{$1}++) {
+	    }
+	    if(/^core id.*[:](.*)/ and not $seen{$physicalid,$1}++) {
 		$cpu->{'cores'}++;
 	    }
 	    /^processor.*[:]/i and $cpu->{'threads'}++;
 	}
-	    close $in_fh;
-	}
 	$cpu->{'sockets'} ||= 1;
 	$cpu->{'cores'} ||= $cpu->{'threads'};
     }
-    if(-e "/proc/self/status") {
+    if(-e "/proc/self/status" and not $ENV{'PARALLEL_CPUINFO'}) {
 	# if 'taskset' is used to limit number of threads
 	if(open(my $in_fh, "<", "/proc/self/status")) {
 	    while(<$in_fh>) {

testsuite/tests-to-run/parallel-local-0.3s.sh

@@ -865,6 +865,7 @@ par_space_envvar() {
     export PARALLEL=" -v" && parallel echo ::: 'space in envvar OK'
 }
 
+
 export -f $(compgen -A function | grep par_)
 compgen -A function | grep par_ | LC_ALL=C sort |
     parallel -j6 --tag -k --joblog +/tmp/jl-`basename $0` '{} 2>&1'

testsuite/wanted-results/parallel-local-1s

@@ -619,6 +619,12 @@ par_test_XI_mI	a7 b1 2 3 4 5 6 7
 par_test_XI_mI	a8 b1 2 3 4 5 6 7 8
 par_test_XI_mI	a9 b1 2 3 4 5 6 7 8 9
 par_test_XI_mI	a10 b1 2 3 4 5 6 7 8 9 10
+par_test_cpu_detection	2-8-8-8	2 8 8 8
+par_test_cpu_detection	1-4-8-4	1 4 8 4
+par_test_cpu_detection	1-2-4-2	1 2 4 2
+par_test_cpu_detection	1-2-2-2	1 2 2 2
+par_test_cpu_detection	2-24-48-24	2 24 48 24
+par_test_cpu_detection	1-2-2-2	1 2 2 2
 par_too_long_line_X	bug #54869: Long lines break
 par_too_long_line_X	      1   29302  131012
 par_too_long_line_X	      1   12698   63490