Added a kqueue class which isn't being used yet, but was part of trying to work around the limitations with the unix select() call and how it is limited to FD_SETSIZE file descriptors.
Also added a TimeSpecTimeout class which can be used with any calls that take a "struct timespec *" as an argument. It is used by the KQueue class.
Also updated some project settings.
git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@175377 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Utility/TimeSpecTimeout.h b/source/Utility/TimeSpecTimeout.h
new file mode 100644
index 0000000..32cdd06
--- /dev/null
+++ b/source/Utility/TimeSpecTimeout.h
@@ -0,0 +1,90 @@
+//===--------------------- TimeSpecTimeout.h --------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef utility_TimeSpecTimeout_h_
+#define utility_TimeSpecTimeout_h_
+
+#include "lldb/Host/TimeValue.h"
+
+namespace lldb_private {
+
+class TimeSpecTimeout
+{
+public:
+ TimeSpecTimeout() :
+ m_infinite (false)
+ {
+ m_timespec.tv_sec = 0;
+ m_timespec.tv_nsec = 0;
+ }
+ ~TimeSpecTimeout()
+ {
+ }
+
+ //----------------------------------------------------------------------
+ /// Sets the timespec pointer correctly given a timeout relative to the
+ /// current time. This function should be called immediately prior to
+ /// calling the function you will use this timeout with since time can
+ /// elapse between when this function is called and when the timeout is
+ /// used.
+ ///
+ /// @param[in] timeout_usec
+ /// The timeout in micro seconds. If timeout_usec is UINT32_MAX, the
+ /// timeout should be set to INFINITE. Otherwise the current time is
+ /// filled into the timespec and \a timeout_usec is added to the
+ /// current time.
+ ///
+ /// @return
+ /// If the timeout is INFINITE, then return NULL, otherwise return
+ /// a pointer to the timespec with the appropriate timeout value.
+ //----------------------------------------------------------------------
+ const struct timespec *
+ SetAbsoluteTimeoutMircoSeconds32 (uint32_t timeout_usec);
+
+ //----------------------------------------------------------------------
+ /// Sets the timespec pointer correctly given a relative time in micro
+ /// seconds.
+ ///
+ /// @param[in] timeout_usec
+ /// The timeout in micro seconds. If timeout_usec is UINT32_MAX, the
+ /// timeout should be set to INFINITE. Otherwise \a timeout_usec
+ /// is correctly placed into the timespec.
+ ///
+ /// @return
+ /// If the timeout is INFINITE, then return NULL, otherwise return
+ /// a pointer to the timespec with the appropriate timeout value.
+ //----------------------------------------------------------------------
+ const struct timespec *
+ SetRelativeTimeoutMircoSeconds32 (uint32_t timeout_usec);
+
+ //----------------------------------------------------------------------
+ /// Gets the timespec pointer that is appropriate for the timeout
+ /// specified. This function should only be used after a call to
+ /// SetRelativeTimeoutXXX() functions.
+ ///
+ /// @return
+ /// If the timeout is INFINITE, then return NULL, otherwise return
+ /// a pointer to the timespec with the appropriate timeout value.
+ //----------------------------------------------------------------------
+ const struct timespec *
+ GetTimeSpecPtr () const
+ {
+ if (m_infinite)
+ return NULL;
+ return &m_timespec;
+ }
+
+protected:
+ struct timespec m_timespec;
+ bool m_infinite;
+};
+
+} // namespace lldb_private
+
+#endif // #ifndef utility_TimeSpecTimeout_h_