dev-libs/concurrencykit: fix ck_hp_fifo test on high cpu count

Package-Manager: Portage-3.0.9, Repoman-3.0.2
Signed-off-by: Conrad Kostecki <[email protected]>

dev-libs/concurrencykit/concurrencykit-0.7.0-r1.ebuild

@@ -26,6 +26,7 @@ PATCHES=(
 	"${FILESDIR}/${P}-glibc-2.30.patch"
 	"${FILESDIR}/${P}-gzip.patch"
 	"${FILESDIR}/${P}-static-libs.patch"
+	"${FILESDIR}/${P}-tests.patch"
 )
 
 src_configure() {

dev-libs/concurrencykit/files/concurrencykit-0.7.0-tests.patch

@@ -0,0 +1,33 @@
+From 07835a3d08d96db30393c235f95649e792883d50 Mon Sep 17 00:00:00 2001
+From: Samy Al Bahra <[email protected]>
+Date: Mon, 30 Nov 2020 18:33:51 -0500
+Subject: [PATCH] regressions/ck_hp_fifo: fixes false-positive from #165.
+
+Add busy-wait barrier before next stage of test. Otherwise,
+some threads may enter it and a non-empty queue state is observed.
+---
+ regressions/ck_hp/validate/ck_hp_fifo.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/regressions/ck_hp/validate/ck_hp_fifo.c b/regressions/ck_hp/validate/ck_hp_fifo.c
+index 4454283c..5820f1aa 100644
+--- a/regressions/ck_hp/validate/ck_hp_fifo.c
++++ b/regressions/ck_hp/validate/ck_hp_fifo.c
+@@ -55,6 +55,7 @@ static struct affinity a;
+ static int size;
+ static unsigned int barrier;
+ static unsigned int e_barrier;
++static unsigned int s_barrier;
+
+ static void *
+ test(void *c)
+@@ -98,6 +99,9 @@ test(void *c)
+ 		}
+ 	}
+
++	ck_pr_inc_uint(&s_barrier);
++	while (ck_pr_load_uint(&s_barrier) < (unsigned int)nthr);
++
+ 	for (i = 0; i < ITERATIONS; i++) {
+ 		for (j = 0; j < size; j++) {
+ 			fifo_entry = malloc(sizeof(ck_hp_fifo_entry_t));