8 void factor_vm::init_ffi()
10 hFactorDll = GetModuleHandle(FACTOR_DLL);
12 fatal_error("GetModuleHandle(\"" FACTOR_DLL_NAME "\") failed", 0);
15 void factor_vm::ffi_dlopen(dll *dll)
17 dll->dll = LoadLibraryEx((WCHAR *)alien_offset(dll->path), NULL, 0);
20 void *factor_vm::ffi_dlsym(dll *dll, symbol_char *symbol)
22 return (void *)GetProcAddress(dll ? (HMODULE)dll->dll : hFactorDll, symbol);
25 void factor_vm::ffi_dlclose(dll *dll)
27 FreeLibrary((HMODULE)dll->dll);
31 bool factor_vm::windows_stat(vm_char *path)
33 BY_HANDLE_FILE_INFORMATION bhfi;
34 HANDLE h = CreateFileW(path,
39 FILE_FLAG_BACKUP_SEMANTICS,
42 if(h == INVALID_HANDLE_VALUE)
44 // FindFirstFile is the only call that can stat c:\pagefile.sys
48 if(INVALID_HANDLE_VALUE == (h = FindFirstFile(path, &st)))
54 ret = GetFileInformationByHandle(h, &bhfi);
59 void factor_vm::windows_image_path(vm_char *full_path, vm_char *temp_path, unsigned int length)
61 snwprintf(temp_path, length-1, L"%s.image", full_path);
62 temp_path[length - 1] = 0;
65 /* You must free() this yourself. */
66 const vm_char *factor_vm::default_image_path()
68 vm_char full_path[MAX_UNICODE_PATH];
70 vm_char temp_path[MAX_UNICODE_PATH];
72 if(!GetModuleFileName(NULL, full_path, MAX_UNICODE_PATH))
73 fatal_error("GetModuleFileName() failed", 0);
75 if((ptr = wcsrchr(full_path, '.')))
78 snwprintf(temp_path, MAX_UNICODE_PATH-1, L"%s.image", full_path);
79 temp_path[MAX_UNICODE_PATH - 1] = 0;
81 return safe_strdup(temp_path);
84 /* You must free() this yourself. */
85 const vm_char *factor_vm::vm_executable_path()
87 vm_char full_path[MAX_UNICODE_PATH];
88 if(!GetModuleFileName(NULL, full_path, MAX_UNICODE_PATH))
89 fatal_error("GetModuleFileName() failed", 0);
90 return safe_strdup(full_path);
93 inline void factor_vm::primitive_existsp()
95 vm_char *path = untag_check<byte_array>(dpop())->data<vm_char>();
96 box_boolean(windows_stat(path));
99 PRIMITIVE_FORWARD(existsp)
101 segment *factor_vm::alloc_segment(cell size)
106 if((mem = (char *)VirtualAlloc(NULL, getpagesize() * 2 + size,
107 MEM_COMMIT, PAGE_EXECUTE_READWRITE)) == 0)
110 if (!VirtualProtect(mem, getpagesize(), PAGE_NOACCESS, &ignore))
111 fatal_error("Cannot allocate low guard page", (cell)mem);
113 if (!VirtualProtect(mem + size + getpagesize(),
114 getpagesize(), PAGE_NOACCESS, &ignore))
115 fatal_error("Cannot allocate high guard page", (cell)mem);
117 segment *block = (segment *)safe_malloc(sizeof(segment));
119 block->start = (cell)mem + getpagesize();
121 block->end = block->start + size;
126 void factor_vm::dealloc_segment(segment *block)
130 if(!VirtualFree((void*)(block->start - si.dwPageSize), 0, MEM_RELEASE))
131 fatal_error("dealloc_segment failed",0);
135 long factor_vm::getpagesize()
137 static long g_pagesize = 0;
140 SYSTEM_INFO system_info;
141 GetSystemInfo (&system_info);
142 g_pagesize = system_info.dwPageSize;
147 void factor_vm::sleep_micros(u64 usec)
149 Sleep((DWORD)(usec / 1000));