From 181d8ded82d49d0133d9d6fd1631d9816c970bfa Mon Sep 17 00:00:00 2001
From: Matthias Benkard <code@mail.matthias.benkard.de>
Date: Sat, 26 Jan 2008 12:06:34 +0100
Subject: Import libffi from PyObjC 1.3.7.

darcs-hash:129bccb59266f997deac9b0353aea2d2d4049f92
---
 libffi/testsuite/libffi.call/ffitest.h | 79 ++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 libffi/testsuite/libffi.call/ffitest.h

(limited to 'libffi/testsuite/libffi.call/ffitest.h')

diff --git a/libffi/testsuite/libffi.call/ffitest.h b/libffi/testsuite/libffi.call/ffitest.h
new file mode 100644
index 0000000..b41e14b
--- /dev/null
+++ b/libffi/testsuite/libffi.call/ffitest.h
@@ -0,0 +1,79 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <ffi.h>
+#include "fficonfig.h"
+
+#define MAX_ARGS 256
+
+#define CHECK(x) !(x) ? abort() : 0
+
+
+/* Prefer MAP_ANON(YMOUS) to /dev/zero, since we don't need to keep a
+   file open.  */
+#ifdef HAVE_MMAP_ANON
+# undef HAVE_MMAP_DEV_ZERO
+
+# include <sys/mman.h>
+# ifndef MAP_FAILED
+#  define MAP_FAILED -1
+# endif
+# if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
+#  define MAP_ANONYMOUS MAP_ANON
+# endif
+# define USING_MMAP
+
+#endif
+
+#ifdef HAVE_MMAP_DEV_ZERO
+
+# include <sys/mman.h>
+# ifndef MAP_FAILED
+#  define MAP_FAILED -1
+# endif
+# define USING_MMAP
+
+#endif
+
+#ifdef USING_MMAP
+static inline void *
+allocate_mmap (size_t size)
+{
+  void *page;
+#if defined (HAVE_MMAP_DEV_ZERO)
+  static int dev_zero_fd = -1;
+#endif
+
+#ifdef HAVE_MMAP_DEV_ZERO
+  if (dev_zero_fd == -1)
+    {
+      dev_zero_fd = open ("/dev/zero", O_RDONLY);
+      if (dev_zero_fd == -1)
+	{
+	  perror ("open /dev/zero: %m");
+	  exit (1);
+	}
+    }
+#endif
+
+
+#ifdef HAVE_MMAP_ANON
+  page = mmap (NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC,
+	       MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+#endif
+#ifdef HAVE_MMAP_DEV_ZERO
+  page = mmap (NULL, size, PROT_READ | PROT_WRITE | PROT_EXEC,
+	       MAP_PRIVATE, dev_zero_fd, 0);
+#endif
+
+  if (page == (void *) MAP_FAILED)
+    {
+      perror ("virtual memory exhausted");
+      exit (1);
+    }
+
+  return page;
+}
+
+#endif
-- 
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