[rtems commit] posix: Add pthread_attr_t methods to get/set affinity.
Jennifer Averett
jennifer at rtems.org
Fri Mar 7 15:08:50 UTC 2014
Module: rtems
Branch: master
Commit: 6e6adafaaa04583a2bbcdd2c43e24e52df4123e5
Changeset: http://git.rtems.org/rtems/commit/?id=6e6adafaaa04583a2bbcdd2c43e24e52df4123e5
Author: Jennifer Averett <jennifer.averett at oarcorp.com>
Date: Thu Feb 6 12:59:08 2014 -0600
posix: Add pthread_attr_t methods to get/set affinity.
This patch adds the following methods:
+ pthread_attr_get_affinity_np
+ pthread_attr_set_affinity_np
---
cpukit/posix/Makefile.am | 6 +++
cpukit/posix/src/pthreadattrgetaffinitynp.c | 48 ++++++++++++++++++++++++
cpukit/posix/src/pthreadattrsetaffinitynp.c | 54 +++++++++++++++++++++++++++
3 files changed, 108 insertions(+), 0 deletions(-)
diff --git a/cpukit/posix/Makefile.am b/cpukit/posix/Makefile.am
index 45562da..13f698c 100644
--- a/cpukit/posix/Makefile.am
+++ b/cpukit/posix/Makefile.am
@@ -142,6 +142,12 @@ libposix_a_SOURCES += src/pthreadatfork.c src/pthreadattrdestroy.c \
## RTEMS specific support methods
libposix_a_SOURCES += src/pthreadattrcompare.c
+if HAS_SMP
+## PTHREAD_AFFINITY_C_FILES
+libposix_a_SOURCES += src/pthreadattrsetaffinitynp.c \
+ src/pthreadattrgetaffinitynp.c
+endif
+
## PSIGNAL_C_FILES
libposix_a_SOURCES += src/psignal.c src/alarm.c src/kill.c src/killinfo.c \
src/kill_r.c src/pause.c src/psignalclearprocesssignals.c \
diff --git a/cpukit/posix/src/pthreadattrgetaffinitynp.c b/cpukit/posix/src/pthreadattrgetaffinitynp.c
new file mode 100644
index 0000000..e7693fa
--- /dev/null
+++ b/cpukit/posix/src/pthreadattrgetaffinitynp.c
@@ -0,0 +1,48 @@
+/**
+ * @file
+ *
+ * @brief Pthread Attribute Get Affinity
+ * @ingroup POSIXAPI
+ */
+
+/*
+ * COPYRIGHT (c) 2014.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if HAVE_DECL_PTHREAD_ATTR_GETAFFINITY_NP
+
+#define _GNU_SOURCE
+#include <pthread.h>
+#include <errno.h>
+
+#include <rtems/posix/pthreadimpl.h>
+#include <rtems/posix/priorityimpl.h>
+#include <rtems/score/threadimpl.h>
+
+int pthread_attr_getaffinity_np(
+ const pthread_attr_t *attr,
+ size_t cpusetsize,
+ cpu_set_t *cpuset
+)
+{
+ if ( !cpuset )
+ return EFAULT;
+ if ( !attr )
+ return EFAULT;
+
+ if ( cpusetsize != attr->affinitysetsize)
+ return EINVAL;
+
+ CPU_COPY( cpuset, attr->affinityset );
+ return 0;
+}
+#endif
diff --git a/cpukit/posix/src/pthreadattrsetaffinitynp.c b/cpukit/posix/src/pthreadattrsetaffinitynp.c
new file mode 100644
index 0000000..6a60aa2
--- /dev/null
+++ b/cpukit/posix/src/pthreadattrsetaffinitynp.c
@@ -0,0 +1,54 @@
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/**
+ * @file
+ *
+ * @brief Pthread Attribute Set Affinity
+ * @ingroup POSIXAPI
+ */
+
+/*
+ * COPYRIGHT (c) 2014.
+ * On-Line Applications Research Corporation (OAR).
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#if HAVE_DECL_PTHREAD_ATTR_SETAFFINITY_NP
+
+#define _GNU_SOURCE
+#include <pthread.h>
+#include <errno.h>
+
+#include <rtems/posix/pthreadimpl.h>
+#include <rtems/posix/priorityimpl.h>
+#include <rtems/score/threadimpl.h>
+#include <rtems/score/cpusetimpl.h>
+
+int pthread_attr_setaffinity_np(
+ pthread_attr_t *attr,
+ size_t cpusetsize,
+ const cpu_set_t *cpuset
+)
+{
+ int error;
+
+ if ( !cpuset )
+ return EFAULT;
+ if ( !attr )
+ return EFAULT;
+
+ error = _CPU_set_Is_valid( cpuset, cpusetsize );
+ if ( error != 0 )
+ return EINVAL;
+
+ CPU_COPY( attr->affinityset, cpuset );
+
+ return 0;
+}
+
+#endif
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