vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 factor_vm *vm;
   7 std::map<THREADHANDLE, factor_vm*> thread_vms;
   8
   9 void init_globals()
  10 {
  11         init_platform_globals();
  12 }
  13
  14 void factor_vm::default_parameters(vm_parameters *p)
  15 {
  16         p->image_path = NULL;
  17
  18         p->ds_size = 32 * sizeof(cell);
  19         p->rs_size = 32 * sizeof(cell);
  20
  21         p->code_size = 8 * sizeof(cell);
  22         p->young_size = sizeof(cell) / 4;
  23         p->aging_size = sizeof(cell) / 2;
  24         p->tenured_size = 24 * sizeof(cell);
  25
  26         p->max_pic_size = 3;
  27
  28         p->fep = false;
  29         p->signals = true;
  30
  31 #ifdef WINDOWS
  32         p->console = false;
  33 #else
  34         if (this == vm)
  35                 p->console = true;
  36         else
  37                 p->console = false;
  38
  39 #endif
  40
  41         p->callback_size = 256;
  42 }
  43
  44 bool factor_vm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  45 {
  46         int val;
  47         if(SSCANF(str,arg,&val) > 0)
  48         {
  49                 *value = val;
  50                 return true;
  51         }
  52         else
  53                 return false;
  54 }
  55
  56 void factor_vm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  57 {
  58         default_parameters(p);
  59         p->executable_path = argv[0];
  60
  61         int i = 0;
  62
  63         for(i = 1; i < argc; i++)
  64         {
  65                 vm_char *arg = argv[i];
  66                 if(STRCMP(arg,STRING_LITERAL("--")) == 0) break;
  67                 else if(factor_arg(arg,STRING_LITERAL("-datastack=%d"),&p->ds_size));
  68                 else if(factor_arg(arg,STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  69                 else if(factor_arg(arg,STRING_LITERAL("-young=%d"),&p->young_size));
  70                 else if(factor_arg(arg,STRING_LITERAL("-aging=%d"),&p->aging_size));
  71                 else if(factor_arg(arg,STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  72                 else if(factor_arg(arg,STRING_LITERAL("-codeheap=%d"),&p->code_size));
  73                 else if(factor_arg(arg,STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  74                 else if(factor_arg(arg,STRING_LITERAL("-callbacks=%d"),&p->callback_size));
  75                 else if(STRCMP(arg,STRING_LITERAL("-fep")) == 0) p->fep = true;
  76                 else if(STRCMP(arg,STRING_LITERAL("-nosignals")) == 0) p->signals = false;
  77                 else if(STRNCMP(arg,STRING_LITERAL("-i="),3) == 0) p->image_path = arg + 3;
  78                 else if(STRCMP(arg,STRING_LITERAL("-console")) == 0) p->console = true;
  79         }
  80 }
  81
  82 /* Do some initialization that we do once only */
  83 void factor_vm::do_stage1_init()
  84 {
  85         std::cout << "*** Stage 2 early init... ";
  86         fflush(stdout);
  87
  88         compile_all_words();
  89         update_code_heap_words();
  90         special_objects[OBJ_STAGE2] = true_object;
  91
  92         std::cout << "done\n";
  93 }
  94
  95 void factor_vm::init_factor(vm_parameters *p)
  96 {
  97         /* Kilobytes */
  98         p->ds_size = align_page(p->ds_size << 10);
  99         p->rs_size = align_page(p->rs_size << 10);
 100         p->callback_size = align_page(p->callback_size << 10);
 101
 102         /* Megabytes */
 103         p->young_size <<= 20;
 104         p->aging_size <<= 20;
 105         p->tenured_size <<= 20;
 106         p->code_size <<= 20;
 107
 108         /* Disable GC during init as a sanity check */
 109         gc_off = true;
 110
 111         /* OS-specific initialization */
 112         early_init();
 113
 114         const vm_char *executable_path = vm_executable_path();
 115
 116         if(executable_path)
 117                 p->executable_path = executable_path;
 118
 119         if(p->image_path == NULL)
 120                 p->image_path = default_image_path();
 121
 122         srand(current_micros());
 123         init_ffi();
 124         init_stacks(p->ds_size,p->rs_size);
 125         init_callbacks(p->callback_size);
 126         load_image(p);
 127         init_c_io();
 128         init_inline_caching(p->max_pic_size);
 129         if(p->signals)
 130                 init_signals();
 131
 132         if(p->console)
 133                 open_console();
 134
 135         init_profiler();
 136
 137         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 138         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 139         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 140         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 141         special_objects[OBJ_ARGS] = false_object;
 142         special_objects[OBJ_EMBEDDED] = false_object;
 143
 144         /* We can GC now */
 145         gc_off = false;
 146
 147         if(!to_boolean(special_objects[OBJ_STAGE2]))
 148                 do_stage1_init();
 149 }
 150
 151 /* May allocate memory */
 152 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 153 {
 154         growable_array args(this);
 155         int i;
 156
 157         for(i = 1; i < argc; i++){
 158                 args.add(allot_alien(false_object,(cell)argv[i]));
 159         }
 160
 161         args.trim();
 162         special_objects[OBJ_ARGS] = args.elements.value();
 163 }
 164
 165 void factor_vm::start_factor(vm_parameters *p)
 166 {
 167         if(p->fep) factorbug();
 168
 169         nest_stacks(NULL);
 170         c_to_factor_toplevel(special_objects[OBJ_BOOT]);
 171         unnest_stacks();
 172 }
 173
 174 void factor_vm::stop_factor()
 175 {
 176         nest_stacks(NULL);
 177         c_to_factor_toplevel(userenv[SHUTDOWN_ENV]);
 178         unnest_stacks();
 179 }
 180
 181 char *factor_vm::factor_eval_string(char *string)
 182 {
 183         char *(*callback)(char *) = (char *(*)(char *))alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 184         return callback(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 (*callback)() = (void (*)())alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 195         callback();
 196 }
 197
 198 void factor_vm::factor_sleep(long us)
 199 {
 200         void (*callback)(long) = (void (*)(long))alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 201         callback(us);
 202 }
 203
 204 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 205 {
 206         vm_parameters p;
 207         default_parameters(&p);
 208         init_parameters_from_args(&p,argc,argv);
 209         init_factor(&p);
 210         pass_args_to_factor(argc,argv);
 211         start_factor(&p);
 212 }
 213
 214 struct startargs {
 215         int argc;
 216         vm_char **argv;
 217 };
 218
 219 factor_vm *new_factor_vm()
 220 {
 221         factor_vm *newvm = new factor_vm();
 222         register_vm_with_thread(newvm);
 223         thread_vms[thread_id()] = newvm;
 224
 225         return newvm;
 226 }
 227
 228 // arg must be new'ed because we're going to delete it!
 229 void* start_standalone_factor_thread(void *arg)
 230 {
 231         factor_vm *newvm = new_factor_vm();
 232         startargs *args = (startargs*) arg;
 233         int argc = args->argc; vm_char **argv = args->argv;
 234         delete args;
 235         newvm->start_standalone_factor(argc, argv);
 236         return 0;
 237 }
 238
 239 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 240 {
 241         factor_vm *newvm = new_factor_vm();
 242         vm = newvm;
 243         return newvm->start_standalone_factor(argc,argv);
 244 }
 245
 246 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 247 {
 248         startargs *args = new startargs;
 249         args->argc = argc; args->argv = argv;
 250         return start_thread(start_standalone_factor_thread,args);
 251 }
 252
 253 }