mono/utils/mono-mmap.h

   1 #ifndef __MONO_UTILS_MMAP_H__
   2 #define __MONO_UTILS_MMAP_H__
   3
   4 #include <glib.h>
   5
   6 enum {
   7         /* protection */
   8         MONO_MMAP_NONE = 0,
   9         MONO_MMAP_READ    = 1 << 0,
  10         MONO_MMAP_WRITE   = 1 << 1,
  11         MONO_MMAP_EXEC    = 1 << 2,
  12         /* make the OS discard the dirty data and fill with 0 */
  13         MONO_MMAP_DISCARD = 1 << 3,
  14         /* other flags (add commit, sync) */
  15         MONO_MMAP_PRIVATE = 1 << 4,
  16         MONO_MMAP_SHARED  = 1 << 5,
  17         MONO_MMAP_ANON    = 1 << 6,
  18         MONO_MMAP_FIXED   = 1 << 7,
  19         MONO_MMAP_32BIT   = 1 << 8
  20 };
  21
  22 /*
  23  * A simple interface to fopen/fstat/fileno
  24  */
  25 typedef struct _MonoFileMap MonoFileMap;
  26
  27 MonoFileMap *mono_file_map_open  (const char* name);
  28 guint64      mono_file_map_size  (MonoFileMap *fmap);
  29 int          mono_file_map_fd    (MonoFileMap *fmap);
  30 int          mono_file_map_close (MonoFileMap *fmap);
  31
  32 int   mono_pagesize   (void);
  33 void* mono_valloc     (void *addr, size_t length, int flags);
  34 int   mono_vfree      (void *addr, size_t length);
  35 void* mono_file_map   (size_t length, int flags, int fd, guint64 offset, void **ret_handle);
  36 int   mono_file_unmap (void *addr, void *handle);
  37 int   mono_mprotect   (void *addr, size_t length, int flags);
  38
  39 void* mono_shared_area         (void);
  40 void  mono_shared_area_remove  (void);
  41 void* mono_shared_area_for_pid (void *pid);
  42 void  mono_shared_area_unload  (void *area);
  43 int   mono_shared_area_instances (void **array, int count);
  44
  45 /*
  46  * On systems where we have to load code into memory instead of mmaping
  47  * we allow for the allocator to be set.   This function is only
  48  * defined on those platforms.
  49  */
  50 typedef void *(*mono_file_map_alloc_fn)   (size_t length);
  51 typedef void  (*mono_file_map_release_fn) (void *addr);
  52
  53 void mono_file_map_set_allocator (mono_file_map_alloc_fn alloc, mono_file_map_release_fn release);
  54
  55 #endif /* __MONO_UTILS_MMAP_H__ */
  56