libc: add passing custom parameter to unix-socket test

Add passing custom parameter to unix-socket test on armv7a9-zynq7000-qemu since
blocking interval significantly overruns timeout due to host system scheduling delays

JIRA: CI-501

libc/socket/common.h

@@ -29,9 +29,6 @@
 #define DATA_SIZE 10000
 #endif
 
-extern char data[DATA_SIZE];
-extern char buf[DATA_SIZE];
-
 ssize_t msg_send(int sock, void *buf, size_t len, int *fd, size_t fdcnt);
 
 ssize_t msg_recv(int sock, void *buf, size_t len, int *fd, size_t *fdcnt);

libc/socket/inet-socket.c

@@ -28,9 +28,7 @@
 #include "common.h"
 #include "unity_fixture.h"
 
-char data[DATA_SIZE];
-char buf[DATA_SIZE];
-
+static char data[DATA_SIZE];
 
 TEST_GROUP(test_inet_socket);
 

libc/socket/unix-socket.c

@@ -34,8 +34,9 @@
 #include "unity_fixture.h"
 
 
-char data[DATA_SIZE];
-char buf[DATA_SIZE];
+static char data[DATA_SIZE];
+static char buf[DATA_SIZE];
+static int pollTimeoutDelay = 30;
 
 
 ssize_t unix_named_socket(int type, const char *name)
@@ -859,7 +860,7 @@ void unix_poll(int type)
 	TEST_ASSERT(rv == 0);
 	TEST_ASSERT(fds[0].revents == 0);
 	TEST_ASSERT(fds[1].revents == 0);
-	TEST_ASSERT_LESS_THAN(350, ms);
+	TEST_ASSERT_LESS_THAN(300 + pollTimeoutDelay, ms);
 	TEST_ASSERT_GREATER_THAN(290, ms);
 
 	clock_gettime(CLOCK_REALTIME, &ts[0]);
@@ -930,6 +931,20 @@ void runner(void)
 
 int main(int argc, char *argv[])
 {
+	/* Due to scheduling delays of host system on which emulator runs,
+	 * add some extra value to poll timeout checks
+	 */
+	for (int i = 1; i < argc; i++) {
+		if (strcmp(argv[i], "--extra-poll-delay-ms") == 0) {
+			pollTimeoutDelay = atoi(argv[i + 1]);
+			if (pollTimeoutDelay <= 0) {
+				fprintf(stderr, "--extra-poll-delay-ms argument is not positive integer\n");
+				exit(EXIT_FAILURE);
+			}
+			break;
+		}
+	}
+
 	/* Assume /tmp dir is missing */
 	int isMissing = 0;
 
@@ -939,7 +954,7 @@ int main(int argc, char *argv[])
 
 	int failures = UnityMain(argc, (const char **)argv, runner);
 
-	if (isMissing) {
+	if (isMissing != 0) {
 		rmdir("/tmp");
 	}
 

libc/test.yaml

@@ -66,8 +66,14 @@ test:
     - name: unix-socket
       execute: test-libc-unix-socket
       targets:
+        exclude: [armv7a9-zynq7000-qemu]
         include: [host-generic-pc]
 
+    - name: unix-socket
+      execute: test-libc-unix-socket --extra-poll-delay-ms 150
+      targets:
+        value: [armv7a9-zynq7000-qemu]
+
     - name: inet-socket
       execute: test-libc-inet-socket
       targets: