2 * mono-filemap.c: Unix/Windows implementation for filemap.
5 * Paolo Molaro (lupus@ximian.com)
7 * Copyright 2008-2008 Novell, Inc.
23 #include "mono-mmap.h"
26 mono_file_map_open (const char* name)
29 gunichar2 *wname = g_utf8_to_utf16 (name, -1, 0, 0, 0);
34 result = (MonoFileMap *) _wfopen ((wchar_t *) wname, L"rb");
38 return (MonoFileMap *)fopen (name, "rb");
43 mono_file_map_size (MonoFileMap *fmap)
46 if (fstat (fileno ((FILE*)fmap), &stat_buf) < 0)
48 return stat_buf.st_size;
52 mono_file_map_fd (MonoFileMap *fmap)
54 return fileno ((FILE*)fmap);
58 mono_file_map_close (MonoFileMap *fmap)
60 return fclose ((FILE*)fmap);
63 #if !defined (HOST_WIN32)
65 static mono_file_map_alloc_fn alloc_fn = (mono_file_map_alloc_fn) malloc;
66 static mono_file_map_release_fn release_fn = (mono_file_map_release_fn) free;
69 mono_file_map_set_allocator (mono_file_map_alloc_fn alloc, mono_file_map_release_fn release)
71 alloc_fn = alloc == NULL ? (mono_file_map_alloc_fn) malloc : alloc;
72 release_fn = release == NULL ? (mono_file_map_release_fn) free : release;
76 mono_file_map_fileio (size_t length, int flags, int fd, guint64 offset, void **ret_handle)
80 void *ptr = (*alloc_fn) (length);
83 cur_offset = lseek (fd, 0, SEEK_CUR);
84 if (lseek (fd, offset, SEEK_SET) != offset) {
88 bytes_read = read (fd, ptr, length);
89 if (bytes_read != length)
91 lseek (fd, cur_offset, SEEK_SET);
97 mono_file_unmap_fileio (void *addr, void *handle)
102 #if !defined(HAVE_MMAP)
104 mono_file_map (size_t length, int flags, int fd, guint64 offset, void **ret_handle)
106 return mono_file_map_fileio (length, flags, fd, offset, ret_handle);
110 mono_file_unmap (void *addr, void *handle)
112 return mono_file_unmap_fileio(addr, handle);