#endif
#include "mono-mmap.h"
+#include "mono-mmap-internal.h"
#include "mono-proclib.h"
#ifndef MAP_ANONYMOUS
return 0;
}
+int
+mono_pages_not_faulted (void *addr, size_t length)
+{
+ return -1;
+}
+
#else
#if defined(HAVE_MMAP)
mflags |= MAP_PRIVATE;
ptr = mmap (addr, length, prot, mflags, -1, 0);
- if (ptr == (void*)-1) {
+ if (ptr == MAP_FAILED) {
int fd = open ("/dev/zero", O_RDONLY);
if (fd != -1) {
ptr = mmap (addr, length, prot, mflags, fd, 0);
close (fd);
}
- if (ptr == (void*)-1)
+ if (ptr == MAP_FAILED)
return NULL;
}
return ptr;
mflags |= MAP_32BIT;
ptr = mmap (0, length, prot, mflags, fd, offset);
- if (ptr == (void*)-1)
+ if (ptr == MAP_FAILED)
return NULL;
*ret_handle = (void*)length;
return ptr;
}
#endif // __native_client__
+int
+mono_pages_not_faulted (void *addr, size_t size)
+{
+ int i;
+ gint64 count;
+ int pagesize = mono_pagesize ();
+ int npages = (size + pagesize - 1) / pagesize;
+ char *faulted = g_malloc0 (sizeof (char*) * npages);
+
+ if (mincore (addr, size, faulted) != 0) {
+ count = -1;
+ } else {
+ count = 0;
+ for (i = 0; i < npages; ++i) {
+ if (faulted [i] != 0)
+ ++count;
+ }
+ }
+
+ g_free (faulted);
+
+ return count;
+}
+
#else
/* dummy malloc-based implementation */
}
return 0;
}
+
+int
+mono_pages_not_faulted (void *addr, size_t length)
+{
+ return -1;
+}
+
#endif // HAVE_MMAP
#if defined(HAVE_SHM_OPEN) && !defined (DISABLE_SHARED_PERFCOUNTERS)