Platform: Add getPageSize()

2 files changed, 26 insertions, 0 deletions

diff --git a/src/java/com/jogamp/common/os/Platform.java b/src/java/com/jogamp/common/os/Platform.java
index 3bd9966..e31e123 100644
--- a/src/java/com/jogamp/common/os/Platform.java
+++ b/src/java/com/jogamp/common/os/Platform.java
@@ -57,6 +57,7 @@ public class Platform {
 
     private static final boolean is32Bit;
     private static final int pointerSizeInBits;
+    private static final long pageSize;
 
     static {
         
@@ -83,8 +84,10 @@ public class Platform {
         
         if(libsLoaded) {
             pointerSizeInBits = getPointerSizeInBitsImpl();
+            pageSize = getPageSizeImpl();
         }else{
             pointerSizeInBits = -1;
+            pageSize = -1;
         }
 
         is32Bit = initArch();
@@ -161,6 +164,7 @@ public class Platform {
     }
 
     private static native int getPointerSizeInBitsImpl();
+    private static native long getPageSizeImpl();
 
     
     /**
@@ -249,5 +253,8 @@ public class Platform {
         return pointerSizeInBits/8;
     }
 
+    public static long getPageSize() {
+        return pageSize;
+    }
 }
 
diff --git a/src/native/common/Platform.c b/src/native/common/Platform.c
index f0e4e11..c385e12 100644
--- a/src/native/common/Platform.c
+++ b/src/native/common/Platform.c
@@ -3,8 +3,27 @@
 
 #include <assert.h>
 
+#include "com_jogamp_common_os_Platform.h"
+
+#if defined(_WIN32)
+    #include <windows.h>
+#else /* assume POSIX sysconf() availability */
+    #include <unistd.h>
+#endif
+
 JNIEXPORT jint JNICALL 
 Java_com_jogamp_common_os_Platform_getPointerSizeInBitsImpl(JNIEnv *env, jclass _unused) {
     return sizeof(void *) * 8;
 }
 
+JNIEXPORT jlong JNICALL 
+Java_com_jogamp_common_os_Platform_getPageSizeImpl(JNIEnv *env, jclass _unused) {
+#if defined(_WIN32)
+    SYSTEM_INFO si;
+    GetSystemInfo(&si);
+    return (jlong) si.dwPageSize;
+#else
+    return (jlong) sysconf(_SC_PAGESIZE);
+#endif
+}
+