fixed adding file problem

[c11concurrency-benchmarks.git] / gdax-orderbook-hpp / demo / dependencies / libcds-2.3.2 / cds / os / linux / timer.h

diff --git a/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/os/linux/timer.h b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/os/linux/timer.h
new file mode 100644 (file)
index 0000000..a0b07c6
--- /dev/null
+++ b/gdax-orderbook-hpp/demo/dependencies/libcds-2.3.2/cds/os/linux/timer.h
@@ -0,0 +1,114 @@
+/*
+    This file is a part of libcds - Concurrent Data Structures library
+
+    (C) Copyright Maxim Khizhinsky (libcds.dev@gmail.com) 2006-2017
+
+    Source code repo: http://github.com/khizmax/libcds/
+    Download: http://sourceforge.net/projects/libcds/files/
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice, this
+      list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+    OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CDSLIB_OS_LINUX_TIMER_H
+#define CDSLIB_OS_LINUX_TIMER_H
+
+#ifndef CDSLIB_OS_TIMER_H
+#   error "<cds/os/timer.h> must be included"
+#endif
+
+#include <time.h>
+//#include <sys/time.h>
+
+//@cond none
+namespace cds { namespace OS {
+    inline namespace Linux {
+
+        // High resolution timer
+        class Timer {
+        public:
+            typedef struct timespec native_timer_type;
+            typedef long long       native_duration_type;
+
+        private:
+            native_timer_type    m_tmStart;
+
+        public:
+
+            Timer() { current( m_tmStart ) ; }
+
+            static void current( native_timer_type& tmr )
+            {
+                // faster than gettimeofday() and posix
+                clock_gettime( CLOCK_REALTIME, &tmr );
+            }
+
+            static native_timer_type    current()
+            {
+                native_timer_type    tmr;
+                current(tmr);
+                return tmr;
+            }
+
+            double reset()
+            {
+                native_timer_type ts;
+                current( ts );
+                double dblRet = double( ( ts.tv_sec - m_tmStart.tv_sec ) + ( ts.tv_nsec - m_tmStart.tv_nsec )) / 1.0E9;
+                m_tmStart = ts;
+                return dblRet;
+            }
+
+            double duration( native_duration_type dur )
+            {
+                return double( dur ) / 1.0E9;
+            }
+
+            double duration()
+            {
+                return duration( native_duration());
+            }
+
+            native_duration_type    native_duration()
+            {
+                native_timer_type ts;
+                current( ts );
+                return native_duration( m_tmStart, ts );
+            }
+
+            static native_duration_type    native_duration( const native_timer_type& nStart, const native_timer_type& nEnd )
+            {
+                return native_duration_type( nEnd.tv_sec - nStart.tv_sec ) * 1000000000 + ( nEnd.tv_nsec - nStart.tv_nsec);
+            }
+
+            static unsigned long long random_seed()
+            {
+                native_timer_type tmr;
+                current( tmr );
+                return ( ((unsigned long long)(tmr.tv_sec)) << 32 ) + tmr.tv_nsec;
+            }
+        };
+    }    // namespace Linux
+
+}}    // namespace cds::OS
+//@endcond
+
+#endif // #ifndef CDSLIB_OS_LINUX_TIMER_H