X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=Source%2FPlatform%2FPlatformUnix.cpp;fp=Source%2FPlatform%2FPlatformUnix.cpp;h=6ed11bf7e6ecbf0cd9e7051e3eb6cd07a36da6d1;hb=72217fbefd03881048287da8345925e1b89b5b9b;hp=0000000000000000000000000000000000000000;hpb=a15391fb6e514e033a50c714ef32968d21419f19;p=lugaru.git

diff --git a/Source/Platform/PlatformUnix.cpp b/Source/Platform/PlatformUnix.cpp
new file mode 100644
index 0000000..6ed11bf
--- /dev/null
+++ b/Source/Platform/PlatformUnix.cpp
@@ -0,0 +1,116 @@
+/*
+Copyright (C) 2003, 2010 - Wolfire Games
+Copyright (C) 2010-2016 - Lugaru contributors (see AUTHORS file)
+
+This file is part of Lugaru.
+
+Lugaru is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+Lugaru is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Lugaru.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef PLATFORM_UNIX
+
+#include "Platform/Platform.hpp"
+
+#include <assert.h>
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+typedef long long __int64;
+typedef __int64 LARGE_INTEGER;
+static int QueryPerformanceFrequency(LARGE_INTEGER* liptr)
+{
+    assert(sizeof(__int64) == 8);
+    assert(sizeof(LARGE_INTEGER) == 8);
+    *liptr = 1000;
+    return (1);
+}
+
+static int QueryPerformanceCounter(LARGE_INTEGER* liptr)
+{
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    *liptr = ((((LARGE_INTEGER)tv.tv_sec) * 1000) +
+              (((LARGE_INTEGER)tv.tv_usec) / 1000));
+    return (1);
+}
+
+class AppTime
+{
+  public:
+    AppTime()
+    {
+        counterRate = 1;
+        baseCounter = 0;
+        QueryPerformanceFrequency((LARGE_INTEGER*)&counterRate);
+        QueryPerformanceCounter((LARGE_INTEGER*)&baseCounter);
+    }
+    __int64 counterRate; // LARGE_INTEGER type has no math functions so use int64
+    __int64 baseCounter;
+};
+static AppTime g_appTime;
+
+AbsoluteTime UpTime()
+{
+    __int64 counter;
+    QueryPerformanceCounter((LARGE_INTEGER*)&counter);
+
+    counter -= g_appTime.baseCounter;
+
+    AbsoluteTime time;
+    time.lo = (unsigned long)counter;
+    time.hi = (unsigned long)(counter >> 32);
+    return time;
+}
+
+Duration AbsoluteDeltaToDuration(AbsoluteTime& a, AbsoluteTime& b)
+{
+    __int64 value = a.hi;
+    value <<= 32;
+    value |= a.lo;
+    __int64 value2 = b.hi;
+    value2 <<= 32;
+    value2 |= b.lo;
+    value -= value2;
+
+    if (value <= 0) {
+        return durationImmediate;
+    }
+
+    __int64 frac = value % g_appTime.counterRate;
+    value /= g_appTime.counterRate;
+
+    Duration time;
+
+    if (value == 0) {
+        frac *= -1000000;
+        frac /= g_appTime.counterRate;
+        time = (Duration)frac;
+    } else {
+        frac *= 1000;
+        frac /= g_appTime.counterRate;
+        value *= 1000;
+        value += frac;
+        time = (Duration)value;
+    }
+
+    return time;
+}
+
+#endif // PLATFORM_UNIX