added win32 support for MINGW32-compiler/cross-compiler

git-svn-id: https://svn.gnumonks.org/trunk/librfid@1989 e0336214-984f-0b4b-a45f-81c69e1f0ede

1 files changed, 30 insertions, 0 deletions

diff --git a/src/usleep.c b/src/usleep.c
new file mode 100644
index 0000000..9f76bcb
--- /dev/null
+++ b/src/usleep.c
@@ -0,0 +1,30 @@
+#include <windows.h>
+#include <errno.h>
+
+void usleep(unsigned long usec)
+{
+    int msec;
+
+    msec=usec/1000;
+    usec=usec%1000;    
+    
+    if(msec)
+    {
+	if(usec)
+	    msec++;
+    }
+    else
+    {
+	LARGE_INTEGER current,freq,end;
+	
+	QueryPerformanceFrequency(&freq);
+	QueryPerformanceCounter(&end);
+	
+	end.QuadPart+=(freq.QuadPart*usec)/1000000;
+	while(QueryPerformanceCounter(&current) && (current.QuadPart<=end.QuadPart))
+	{
+	}	
+    }
+	
+    Sleep(msec);
+}