egl: Move _eglPointerIsDereferencable() to eglglobals.[ch]

Move _eglPointerIsDereferencable() to eglglobals.[ch] and make it a
non-static function so it can be used out of egldisplay.c

Signed-off-by: Miguel A. Vico <[email protected]>
Reviewed-by: James Jones <[email protected]>
Acked-by: Daniel Stone <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

3 files changed, 37 insertions, 33 deletions

diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index 7aaab3c2c94..690728d2f70 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -49,10 +49,6 @@
 #include "eglsync.h"
 
 /* Includes for _eglNativePlatformDetectNativeDisplay */
-#ifdef HAVE_MINCORE
-#include <unistd.h>
-#include <sys/mman.h>
-#endif
 #ifdef HAVE_WAYLAND_PLATFORM
 #include <wayland-client.h>
 #endif
@@ -106,35 +102,6 @@ _eglGetNativePlatformFromEnv(void)
 
 
 /**
- * Perform validity checks on a generic pointer.
- */
-static EGLBoolean
-_eglPointerIsDereferencable(void *p)
-{
-#ifdef HAVE_MINCORE
-   uintptr_t addr = (uintptr_t) p;
-   unsigned char valid = 0;
-   const long page_size = getpagesize();
-
-   if (p == NULL)
-      return EGL_FALSE;
-
-   /* align addr to page_size */
-   addr &= ~(page_size - 1);
-
-   if (mincore((void *) addr, page_size, &valid) < 0) {
-      _eglLog(_EGL_DEBUG, "mincore failed: %m");
-      return EGL_FALSE;
-   }
-
-   return (valid & 0x01) == 0x01;
-#else
-   return p != NULL;
-#endif
-}
-
-
-/**
  * Try detecting native platform with the help of native display characteristcs.
  */
 static _EGLPlatformType
diff --git a/src/egl/main/eglglobals.c b/src/egl/main/eglglobals.c
index baf96bb1ec5..6fdc6c31ce3 100644
--- a/src/egl/main/eglglobals.c
+++ b/src/egl/main/eglglobals.c
@@ -37,6 +37,12 @@
 #include "eglglobals.h"
 #include "egldisplay.h"
 #include "egldriver.h"
+#include "egllog.h"
+
+#ifdef HAVE_MINCORE
+#include <unistd.h>
+#include <sys/mman.h>
+#endif
 
 
 static mtx_t _eglGlobalMutex = _MTX_INITIALIZER_NP;
@@ -142,3 +148,28 @@ _eglGetClientExtensionString(void)
    mtx_unlock(_eglGlobal.Mutex);
    return ret;
 }
+
+EGLBoolean
+_eglPointerIsDereferencable(void *p)
+{
+#ifdef HAVE_MINCORE
+   uintptr_t addr = (uintptr_t) p;
+   unsigned char valid = 0;
+   const long page_size = getpagesize();
+
+   if (p == NULL)
+      return EGL_FALSE;
+
+   /* align addr to page_size */
+   addr &= ~(page_size - 1);
+
+   if (mincore((void *) addr, page_size, &valid) < 0) {
+      _eglLog(_EGL_DEBUG, "mincore failed: %m");
+      return EGL_FALSE;
+   }
+
+   return (valid & 0x01) == 0x01;
+#else
+   return p != NULL;
+#endif
+}
diff --git a/src/egl/main/eglglobals.h b/src/egl/main/eglglobals.h
index c6ef59d4820..6655ccab65c 100644
--- a/src/egl/main/eglglobals.h
+++ b/src/egl/main/eglglobals.h
@@ -87,4 +87,10 @@ static inline unsigned int DebugBitFromType(EGLenum type)
 extern const char *
 _eglGetClientExtensionString(void);
 
+/**
+ * Perform validity checks on a generic pointer.
+ */
+extern EGLBoolean
+_eglPointerIsDereferencable(void *p);
+
 #endif /* EGLGLOBALS_INCLUDED */