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authorWaldemar Brodkorb <wbx@openadk.org>2014-09-04 15:18:54 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2014-09-04 15:18:54 +0200
commit36043b37739dffdaea8d31457570810e492268d7 (patch)
tree0045cba85b862ecca89cf7b5aff336bddbabad89 /test/nptl
parenta5352e212fcd4da83c8ff4fe542ef23c8e3187f8 (diff)
parent6d550ddd129b18cf800eab604f74536754526cd8 (diff)
Merge remote-tracking branch 'origin/upstream'
Diffstat (limited to 'test/nptl')
-rw-r--r--test/nptl/tst-cancel4.c28
-rw-r--r--test/nptl/tst-sem3.c33
-rw-r--r--test/nptl/tst-sem4.c7
3 files changed, 49 insertions, 19 deletions
diff --git a/test/nptl/tst-cancel4.c b/test/nptl/tst-cancel4.c
index e7119589f..4ba40450e 100644
--- a/test/nptl/tst-cancel4.c
+++ b/test/nptl/tst-cancel4.c
@@ -83,7 +83,30 @@ static pthread_barrier_t b2;
# define IPC_ADDVAL 0
#endif
-#define WRITE_BUFFER_SIZE 4096
+/* The WRITE_BUFFER_SIZE value needs to be chosen such that if we set
+ the socket send buffer size to '1', a write of this size on that
+ socket will block.
+
+ The Linux kernel imposes a minimum send socket buffer size which
+ has changed over the years. As of Linux 3.10 the value is:
+
+ 2 * (2048 + SKB_DATA_ALIGN(sizeof(struct sk_buff)))
+
+ which is attempting to make sure that with standard MTUs,
+ TCP can always queue up at least 2 full sized packets.
+
+ Furthermore, there is logic in the socket send paths that
+ will allow one more packet (of any size) to be queued up as
+ long as some socket buffer space remains. Blocking only
+ occurs when we try to queue up a new packet and the send
+ buffer space has already been fully consumed.
+
+ Therefore we must set this value to the largest possible value of
+ the formula above (and since it depends upon the size of "struct
+ sk_buff", it is dependent upon machine word size etc.) plus some
+ slack space. */
+
+#define WRITE_BUFFER_SIZE 16384
/* Cleanup handling test. */
static int cl_called;
@@ -758,7 +781,6 @@ tf_sigpause (void *arg)
pthread_cleanup_push (cl, NULL);
- /* Just for fun block the cancellation signal. */
sigpause (SIGCANCEL);
pthread_cleanup_pop (0);
@@ -993,6 +1015,8 @@ tf_accept (void *arg)
if (++tries > 10)
{
printf ("%s: too many unsuccessful bind calls\n", __FUNCTION__);
+ /* prevent endless loop, when bind fails forever */
+ exit (1);
}
strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-1-XXXXXX");
diff --git a/test/nptl/tst-sem3.c b/test/nptl/tst-sem3.c
index d14f6f633..7b75e29e2 100644
--- a/test/nptl/tst-sem3.c
+++ b/test/nptl/tst-sem3.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -28,7 +28,7 @@
int
-main (void)
+do_test (void)
{
size_t ps = sysconf (_SC_PAGESIZE);
char tmpfname[] = "/tmp/tst-sem3.XXXXXX";
@@ -43,7 +43,7 @@ main (void)
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
- exit (1);
+ return 1;
}
/* Make sure it is always removed. */
@@ -56,14 +56,14 @@ main (void)
if (write (fd, data, ps) != (ssize_t) ps)
{
puts ("short write");
- exit (1);
+ return 1;
}
mem = mmap (NULL, ps, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (mem == MAP_FAILED)
{
printf ("mmap failed: %m\n");
- exit (1);
+ return 1;
}
s = (sem_t *) (((uintptr_t) mem + __alignof (sem_t))
@@ -73,25 +73,25 @@ main (void)
if (sem_init (s, 1, 1) == -1)
{
puts ("init failed");
- exit (1);
+ return 1;
}
if (TEMP_FAILURE_RETRY (sem_wait (s)) == -1)
{
puts ("1st wait failed");
- exit (1);
+ return 1;
}
errno = 0;
if (TEMP_FAILURE_RETRY (sem_trywait (s)) != -1)
{
puts ("trywait succeeded");
- exit (1);
+ return 1;
}
else if (errno != EAGAIN)
{
puts ("trywait didn't return EAGAIN");
- exit (1);
+ return 1;
}
*p = 0;
@@ -101,7 +101,7 @@ main (void)
if (pid == -1)
{
puts ("fork failed");
- exit (1);
+ return 1;
}
else if (pid == 0)
{
@@ -109,13 +109,13 @@ main (void)
if ((*p)++ != 0)
{
puts ("child: *p != 0");
- exit (1);
+ return 1;
}
if (sem_post (s) == -1)
{
puts ("child: 1st post failed");
- exit (1);
+ return 1;
}
puts ("child done");
@@ -125,17 +125,20 @@ main (void)
if (TEMP_FAILURE_RETRY (sem_wait (s)) == -1)
{
printf ("parent: 2nd wait failed: %m\n");
- exit (1);
+ return 1;
}
if (*p != 1)
{
puts ("*p != 1");
- exit (1);
+ return 1;
}
puts ("parent done");
}
- exit (0);
+ return 0;
}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
diff --git a/test/nptl/tst-sem4.c b/test/nptl/tst-sem4.c
index 125759bab..72ed97d37 100644
--- a/test/nptl/tst-sem4.c
+++ b/test/nptl/tst-sem4.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002 Free Software Foundation, Inc.
+/* Copyright (C) 2002-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -32,7 +32,7 @@ remove_sem (int status, void *arg)
int
-main (void)
+do_test (void)
{
sem_t *s;
sem_t *s2;
@@ -144,3 +144,6 @@ main (void)
return 0;
}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"