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-rw-r--r--ChangeLog32
-rw-r--r--conform/data/threads.h-data12
-rw-r--r--nptl/Makefile4
-rw-r--r--nptl/Versions1
-rw-r--r--nptl/mtx_destroy.c26
-rw-r--r--nptl/mtx_init.c53
-rw-r--r--nptl/mtx_lock.c26
-rw-r--r--nptl/mtx_timedlock.c28
-rw-r--r--nptl/mtx_trylock.c26
-rw-r--r--nptl/mtx_unlock.c26
-rw-r--r--nptl/threads.h44
11 files changed, 277 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 5cafa4ccfd..1f04a0c649 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,38 @@
 2018-07-24  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
 	[BZ #14092]
+	* conform/data/threads.h-data (mtx_plain): New constant.
+	(mtx_recursive): Likewise.
+	(mtx_timed): Likewise.
+	(mtx_t): New type.
+	(mtx_init): New function.
+	(mtx_lock): Likewise.
+	(mtx_timedlock): Likewise.
+	(mtx_trylock): Likewise.
+	(mtx_unlock): Likewise.
+	(mtx_destroy): Likewise.
+	* nptl/Makefile (libpthread-routines): Add mtx_destroy, mtx_init,
+	mtx_lock, mtx_timedlock, mtx_trylock, and mtx_unlock object.
+	* nptl/Versions (libpthread) [GLIBC_2.28]): Add mtx_init, mtx_lock,
+	mtx_timedlock, mtx_trylock, mtx_unlock, and mtx_destroy.
+	* nptl/mtx_destroy.c: New file.
+	* nptl/mtx_init.c: Likewise.
+	* nptl/mtx_lock.c: Likewise.
+	* nptl/mtx_timedlock.c: Likewise.
+	* nptl/mtx_trylock.c: Likewise.
+	* nptl/mtx_unlock.c: Likewise.
+	* sysdeps/nptl/threads.h (mtx_plain): New enumeration.
+	(mtx_recursive): Likewise.
+	(mtx_timed): Likewise.
+	(mtx_t): New type.
+	(mtx_init): New prototype.
+	(mtx_lock): Likewise.
+	(mtx_timedlock): Likewise.
+	(mtx_trylock): Likewise.
+	(mtx_unlock): Likewise.
+	(mtx_destroy): Likewise.
+
+	[BZ #14092]
 	* conform/Makefile (conformtest-headers-ISO11): Add threads.h.
 	(linknamespace-libs-ISO11): Add libpthread.a.
 	* conform/data/threads.h-data: New file: add C11 thrd_* types and
diff --git a/conform/data/threads.h-data b/conform/data/threads.h-data
index bc2d8578de..bb5ca75524 100644
--- a/conform/data/threads.h-data
+++ b/conform/data/threads.h-data
@@ -6,8 +6,13 @@ constant thrd_error
 constant thrd_nomem
 constant thrd_timedout
 
+constant mtx_plain
+constant mtx_recursive
+constant mtx_timed
+
 type thrd_t
 type thrd_start_t
+type mtx_t
 
 function int thrd_create (thrd_t*, thrd_start_t, void*)
 function int thrd_equal (thrd_t, thrd_t)
@@ -18,6 +23,13 @@ function int thrd_detach (thrd_t)
 function int thrd_join (thrd_t, int*)
 function void thrd_yield (void)
 
+function int mtx_init (mtx_t*, int)
+function int mtx_lock (mtx_t*)
+function int mtx_timedlock (mtx_t*, const struct timespec*)
+function int mtx_trylock (mtx_t*)
+function int mtx_unlock (mtx_t*)
+function void mtx_destroy (mtx_t*)
+
 #include "time.h-data"
 
 #endif
diff --git a/nptl/Makefile b/nptl/Makefile
index 1fcf29f6c0..4b889ab04e 100644
--- a/nptl/Makefile
+++ b/nptl/Makefile
@@ -141,7 +141,9 @@ libpthread-routines = nptl-init nptlfreeres vars events version pt-interp \
 		      pthread_mutex_setprioceiling \
 		      pthread_setname pthread_getname \
 		      pthread_setattr_default_np pthread_getattr_default_np \
-		      thrd_create thrd_detach thrd_exit thrd_join
+		      thrd_create thrd_detach thrd_exit thrd_join \
+		      mtx_destroy mtx_init mtx_lock mtx_timedlock \
+		      mtx_trylock mtx_unlock
 #		      pthread_setuid pthread_seteuid pthread_setreuid \
 #		      pthread_setresuid \
 #		      pthread_setgid pthread_setegid pthread_setregid \
diff --git a/nptl/Versions b/nptl/Versions
index 38d7e48047..ca1be37354 100644
--- a/nptl/Versions
+++ b/nptl/Versions
@@ -272,6 +272,7 @@ libpthread {
   # C11 thread symbols.
   GLIBC_2.28 {
     thrd_create; thrd_detach; thrd_exit; thrd_join;
+    mtx_init; mtx_lock; mtx_timedlock; mtx_trylock; mtx_unlock; mtx_destroy;
   }
 
   GLIBC_PRIVATE {
diff --git a/nptl/mtx_destroy.c b/nptl/mtx_destroy.c
new file mode 100644
index 0000000000..15bc022f72
--- /dev/null
+++ b/nptl/mtx_destroy.c
@@ -0,0 +1,26 @@
+/* C11 threads mutex destroy implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "thrd_priv.h"
+#include "pthreadP.h"
+
+void
+mtx_destroy (mtx_t *mutex)
+{
+  __pthread_mutex_destroy ((pthread_mutex_t *) mutex);
+}
diff --git a/nptl/mtx_init.c b/nptl/mtx_init.c
new file mode 100644
index 0000000000..8f27478c77
--- /dev/null
+++ b/nptl/mtx_init.c
@@ -0,0 +1,53 @@
+/* C11 threads mutex initialization implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdalign.h>
+
+#include "thrd_priv.h"
+
+int
+mtx_init (mtx_t *mutex, int type)
+{
+  _Static_assert (sizeof (mtx_t) == sizeof (pthread_mutex_t),
+		  "sizeof (mtx_t) != sizeof (pthread_mutex_t)");
+  _Static_assert (alignof (mtx_t) == alignof (pthread_mutex_t),
+		  "alignof (mtx_t) != alignof (pthread_mutex_t)");
+
+  pthread_mutexattr_t attr;
+
+  __pthread_mutexattr_init (&attr);
+
+  /* Another possible solution would be to set the flags directly in
+     mutex object. */
+  switch (type)
+  {
+    case mtx_plain | mtx_recursive:
+    case mtx_timed | mtx_recursive:
+      __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE);
+      break;
+    case mtx_plain:
+    case mtx_timed: /* No difference between both in standard */
+    default:
+      __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_NORMAL);
+      break;
+  }
+
+  int err_code = __pthread_mutex_init ((pthread_mutex_t *) mutex, &attr);
+  /* pthread_mutexattr_destroy implementation is a noop.  */
+  return thrd_err_map (err_code);
+}
diff --git a/nptl/mtx_lock.c b/nptl/mtx_lock.c
new file mode 100644
index 0000000000..9b3e6cd89f
--- /dev/null
+++ b/nptl/mtx_lock.c
@@ -0,0 +1,26 @@
+/* C11 threads mutex lock implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "thrd_priv.h"
+
+int
+mtx_lock (mtx_t *mutex)
+{
+  int err_code = __pthread_mutex_lock ((pthread_mutex_t *) mutex);
+  return thrd_err_map (err_code);
+}
diff --git a/nptl/mtx_timedlock.c b/nptl/mtx_timedlock.c
new file mode 100644
index 0000000000..0972622053
--- /dev/null
+++ b/nptl/mtx_timedlock.c
@@ -0,0 +1,28 @@
+/* C11 threads mutex timed lock implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "thrd_priv.h"
+
+int
+mtx_timedlock (mtx_t *restrict mutex,
+	       const struct timespec *restrict time_point)
+{
+  int err_code = __pthread_mutex_timedlock ((pthread_mutex_t *)mutex,
+					    time_point);
+  return thrd_err_map (err_code);
+}
diff --git a/nptl/mtx_trylock.c b/nptl/mtx_trylock.c
new file mode 100644
index 0000000000..f9b6a69b09
--- /dev/null
+++ b/nptl/mtx_trylock.c
@@ -0,0 +1,26 @@
+/* C11 threads mutex try lock implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "thrd_priv.h"
+
+int
+mtx_trylock (mtx_t *mutex)
+{
+  int err_code = __pthread_mutex_trylock ((pthread_mutex_t *) mutex);
+  return thrd_err_map (err_code);
+}
diff --git a/nptl/mtx_unlock.c b/nptl/mtx_unlock.c
new file mode 100644
index 0000000000..07f68f62ce
--- /dev/null
+++ b/nptl/mtx_unlock.c
@@ -0,0 +1,26 @@
+/* C11 threads mutex unlock implementation.
+   Copyright (C) 2018 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "thrd_priv.h"
+
+int
+mtx_unlock (mtx_t *mutex)
+{
+  int err_code = __pthread_mutex_unlock ((pthread_mutex_t *) mutex);
+  return thrd_err_map (err_code);
+}
diff --git a/nptl/threads.h b/nptl/threads.h
index 5258e23919..13d0075ea9 100644
--- a/nptl/threads.h
+++ b/nptl/threads.h
@@ -24,6 +24,7 @@
 
 __BEGIN_DECLS
 
+#include <bits/pthreadtypes-arch.h>
 #include <bits/types/struct_timespec.h>
 
 typedef unsigned long int thrd_t;
@@ -39,6 +40,20 @@ enum
   thrd_timedout = 4
 };
 
+/* Mutex types.  */
+enum
+{
+  mtx_plain     = 0,
+  mtx_recursive = 1,
+  mtx_timed     = 2
+};
+
+typedef union
+{
+  char __size[__SIZEOF_PTHREAD_MUTEX_T];
+  long int __align __LOCK_ALIGNMENT;
+} mtx_t;
+
 /* Threads functions.  */
 
 /* Create a new thread executing the function __FUNC.  Arguments for __FUNC
@@ -85,6 +100,35 @@ thrd_equal (thrd_t __thread1, thrd_t __thread2)
 }
 #endif
 
+
+/* Mutex functions.  */
+
+/* Creates a new mutex object with type __TYPE.  If successful the new
+   object is pointed by __MUTEX.  */
+extern int mtx_init (mtx_t *__mutex, int __type);
+
+/* Block the current thread until the mutex pointed to by __MUTEX is
+   unlocked.  In that case current thread will not be blocked.  */
+extern int mtx_lock (mtx_t *__mutex);
+
+/* Block the current thread until the mutex pointed by __MUTEX is unlocked
+   or time pointed by __TIME_POINT is reached.  In case the mutex is unlock,
+   the current thread will not be blocked.  */
+extern int mtx_timedlock (mtx_t *__restrict __mutex,
+			  const struct timespec *__restrict __time_point);
+
+/* Try to lock the mutex pointed by __MUTEX without blocking.  If the mutex
+   is free the current threads takes control of it, otherwise it returns
+   immediately.  */
+extern int mtx_trylock (mtx_t *__mutex);
+
+/* Unlock the mutex pointed by __MUTEX.  It may potentially awake other
+   threads waiting on this mutex.  */
+extern int mtx_unlock (mtx_t *__mutex);
+
+/* Destroy the mutex object pointed by __MUTEX.  */
+extern void mtx_destroy (mtx_t *__mutex);
+
 __END_DECLS
 
 #endif /* _THREADS_H */
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