SERVER-7404 Link to posix_fadvise at runtime for Solaris

For the Solaris/SmartOS build, do not make direct calls to posix_fadvise,
which is present in Solaris 11 but not in Solaris 10.  Instead, see if
it is available in a loaded library (which will be libc.so.1) at runtime
and either call it or call an emulation.  The emulation is a no-op.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/mongo/platform/posix_fadvise.h b/src/mongo/platform/posix_fadvise.h
new file mode 100644
index 00000000000..117b6b917f4
--- /dev/null
+++ b/src/mongo/platform/posix_fadvise.h
@@ -0,0 +1,41 @@
+/*    Copyright 2013 10gen Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#pragma once
+
+#if !defined(_WIN32)
+
+#include <fcntl.h>
+
+#if defined(__sunos__)
+
+#include <sys/types.h>
+
+namespace mongo {
+    namespace pal {
+        int posix_fadvise(int fd, off_t offset, off_t len, int advice);
+    } // namespace pal
+    using pal::posix_fadvise;
+} // namespace mongo
+
+#elif defined(POSIX_FADV_DONTNEED)
+
+namespace mongo {
+    using ::posix_fadvise;
+} // namespace mongo
+
+#endif
+
+#endif