vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 void init_globals()
   7 {
   8         init_mvm();
   9 }
  10
  11 void factor_vm::default_parameters(vm_parameters *p)
  12 {
  13         p->image_path = NULL;
  14
  15         p->datastack_size = 32 * sizeof(cell);
  16         p->retainstack_size = 32 * sizeof(cell);
  17
  18 #if defined(__OpenBSD__) && defined(FACTOR_X86)
  19         p->callstack_size = 64 * sizeof(cell);
  20 #elif defined(FACTOR_PPC)
  21         p->callstack_size = 256 * sizeof(cell);
  22 #else
  23         p->callstack_size = 128 * sizeof(cell);
  24 #endif
  25
  26         p->code_size = 64;
  27         p->young_size = sizeof(cell) / 4;
  28         p->aging_size = sizeof(cell) / 2;
  29         p->tenured_size = 24 * sizeof(cell);
  30
  31         p->max_pic_size = 3;
  32
  33         p->fep = false;
  34         p->signals = true;
  35
  36 #ifdef WINDOWS
  37         p->console = false;
  38 #else
  39         p->console = true;
  40 #endif
  41
  42         p->callback_size = 256;
  43 }
  44
  45 bool factor_vm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  46 {
  47         int val;
  48         if(SSCANF(str,arg,&val) > 0)
  49         {
  50                 *value = val;
  51                 return true;
  52         }
  53         else
  54                 return false;
  55 }
  56
  57 void factor_vm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  58 {
  59         default_parameters(p);
  60         p->executable_path = argv[0];
  61
  62         int i = 0;
  63
  64         for(i = 1; i < argc; i++)
  65         {
  66                 vm_char *arg = argv[i];
  67                 if(STRCMP(arg,STRING_LITERAL("--")) == 0) break;
  68                 else if(factor_arg(arg,STRING_LITERAL("-datastack=%d"),&p->datastack_size));
  69                 else if(factor_arg(arg,STRING_LITERAL("-retainstack=%d"),&p->retainstack_size));
  70                 else if(factor_arg(arg,STRING_LITERAL("-callstack=%d"),&p->callstack_size));
  71                 else if(factor_arg(arg,STRING_LITERAL("-young=%d"),&p->young_size));
  72                 else if(factor_arg(arg,STRING_LITERAL("-aging=%d"),&p->aging_size));
  73                 else if(factor_arg(arg,STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  74                 else if(factor_arg(arg,STRING_LITERAL("-codeheap=%d"),&p->code_size));
  75                 else if(factor_arg(arg,STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  76                 else if(factor_arg(arg,STRING_LITERAL("-callbacks=%d"),&p->callback_size));
  77                 else if(STRCMP(arg,STRING_LITERAL("-fep")) == 0) p->fep = true;
  78                 else if(STRCMP(arg,STRING_LITERAL("-nosignals")) == 0) p->signals = false;
  79                 else if(STRNCMP(arg,STRING_LITERAL("-i="),3) == 0) p->image_path = arg + 3;
  80                 else if(STRCMP(arg,STRING_LITERAL("-console")) == 0) p->console = true;
  81         }
  82 }
  83
  84 /* Compile code in boot image so that we can execute the startup quotation */
  85 void factor_vm::prepare_boot_image()
  86 {
  87         std::cout << "*** Stage 2 early init... ";
  88         fflush(stdout);
  89
  90         compile_all_words();
  91         update_code_heap_words(true);
  92         initialize_all_quotations();
  93         special_objects[OBJ_STAGE2] = true_object;
  94
  95         std::cout << "done\n";
  96 }
  97
  98 void factor_vm::init_factor(vm_parameters *p)
  99 {
 100         /* Kilobytes */
 101         p->datastack_size = align_page(p->datastack_size << 10);
 102         p->retainstack_size = align_page(p->retainstack_size << 10);
 103         p->callstack_size = align_page(p->callstack_size << 10);
 104         p->callback_size = align_page(p->callback_size << 10);
 105
 106         /* Megabytes */
 107         p->young_size <<= 20;
 108         p->aging_size <<= 20;
 109         p->tenured_size <<= 20;
 110         p->code_size <<= 20;
 111
 112         /* Disable GC during init as a sanity check */
 113         gc_off = true;
 114
 115         /* OS-specific initialization */
 116         early_init();
 117
 118         const vm_char *executable_path = vm_executable_path();
 119
 120         if(executable_path)
 121                 p->executable_path = executable_path;
 122
 123         if(p->image_path == NULL)
 124                 p->image_path = default_image_path();
 125
 126         srand((unsigned int)nano_count());
 127         init_ffi();
 128         init_contexts(p->datastack_size,p->retainstack_size,p->callstack_size);
 129         init_callbacks(p->callback_size);
 130         load_image(p);
 131         init_c_io();
 132         init_inline_caching((int)p->max_pic_size);
 133         if(p->signals)
 134                 init_signals();
 135
 136         if(p->console)
 137                 open_console();
 138
 139         init_profiler();
 140
 141         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 142         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 143         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 144         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 145         special_objects[OBJ_ARGS] = false_object;
 146         special_objects[OBJ_EMBEDDED] = false_object;
 147         special_objects[OBJ_VM_COMPILER] = allot_alien(false_object,(cell)FACTOR_COMPILER_VERSION);
 148
 149         /* We can GC now */
 150         gc_off = false;
 151
 152         if(!to_boolean(special_objects[OBJ_STAGE2]))
 153                 prepare_boot_image();
 154 }
 155
 156 /* May allocate memory */
 157 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 158 {
 159         growable_array args(this);
 160
 161         for(fixnum i = 1; i < argc; i++)
 162                 args.add(allot_alien(false_object,(cell)argv[i]));
 163
 164         args.trim();
 165         special_objects[OBJ_ARGS] = args.elements.value();
 166 }
 167
 168 void factor_vm::start_factor(vm_parameters *p)
 169 {
 170         if(p->fep) factorbug();
 171
 172         c_to_factor_toplevel(special_objects[OBJ_STARTUP_QUOT]);
 173 }
 174
 175 void factor_vm::stop_factor()
 176 {
 177         c_to_factor_toplevel(special_objects[OBJ_SHUTDOWN_QUOT]);
 178 }
 179
 180 char *factor_vm::factor_eval_string(char *string)
 181 {
 182         void *func = alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 183         CODE_TO_FUNCTION_POINTER(func);
 184         return ((char *(*)(char *))func)(string);
 185 }
 186
 187 void factor_vm::factor_eval_free(char *result)
 188 {
 189         free(result);
 190 }
 191
 192 void factor_vm::factor_yield()
 193 {
 194         void *func = alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 195         CODE_TO_FUNCTION_POINTER(func);
 196         ((void (*)())func)();
 197 }
 198
 199 void factor_vm::factor_sleep(long us)
 200 {
 201         void *func = alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 202         CODE_TO_FUNCTION_POINTER(func);
 203         ((void (*)(long))func)(us);
 204 }
 205
 206 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 207 {
 208         vm_parameters p;
 209         default_parameters(&p);
 210         init_parameters_from_args(&p,argc,argv);
 211         init_factor(&p);
 212         pass_args_to_factor(argc,argv);
 213         start_factor(&p);
 214 }
 215
 216 factor_vm *new_factor_vm()
 217 {
 218         factor_vm *newvm = new factor_vm();
 219         register_vm_with_thread(newvm);
 220         thread_vms[thread_id()] = newvm;
 221
 222         return newvm;
 223 }
 224
 225 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 226 {
 227         factor_vm *newvm = new_factor_vm();
 228         return newvm->start_standalone_factor(argc,argv);
 229 }
 230
 231 }