1 files changed, 90 insertions, 0 deletions
diff --git a/source/Utility/TimeSpecTimeout.h b/source/Utility/TimeSpecTimeout.h
new file mode 100644
index 000000000000..32cdd067658c
--- /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_