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 /* Compile code in boot image so that we can execute the startup quotation */
  83 void factor_vm::prepare_boot_image()
  84 {
  85         std::cout << "*** Stage 2 early init... ";
  86         fflush(stdout);
  87
  88         compile_all_words();
  89         update_code_heap_words();
  90         initialize_all_quotations();
  91         special_objects[OBJ_STAGE2] = true_object;
  92
  93         std::cout << "done\n";
  94 }
  95
  96 void factor_vm::init_factor(vm_parameters *p)
  97 {
  98         /* Kilobytes */
  99         p->ds_size = align_page(p->ds_size << 10);
 100         p->rs_size = align_page(p->rs_size << 10);
 101         p->callback_size = align_page(p->callback_size << 10);
 102
 103         /* Megabytes */
 104         p->young_size <<= 20;
 105         p->aging_size <<= 20;
 106         p->tenured_size <<= 20;
 107         p->code_size <<= 20;
 108
 109         /* Disable GC during init as a sanity check */
 110         gc_off = true;
 111
 112         /* OS-specific initialization */
 113         early_init();
 114
 115         const vm_char *executable_path = vm_executable_path();
 116
 117         if(executable_path)
 118                 p->executable_path = executable_path;
 119
 120         if(p->image_path == NULL)
 121                 p->image_path = default_image_path();
 122
 123         srand(system_micros());
 124         init_ffi();
 125         init_stacks(p->ds_size,p->rs_size);
 126         init_callbacks(p->callback_size);
 127         load_image(p);
 128         init_c_io();
 129         init_inline_caching(p->max_pic_size);
 130         if(p->signals)
 131                 init_signals();
 132
 133         if(p->console)
 134                 open_console();
 135
 136         init_profiler();
 137
 138         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 139         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 140         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 141         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 142         special_objects[OBJ_ARGS] = false_object;
 143         special_objects[OBJ_EMBEDDED] = false_object;
 144
 145         /* We can GC now */
 146         gc_off = false;
 147
 148         if(!to_boolean(special_objects[OBJ_STAGE2]))
 149                 prepare_boot_image();
 150 }
 151
 152 /* May allocate memory */
 153 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 154 {
 155         growable_array args(this);
 156
 157         for(fixnum i = 1; i < argc; i++)
 158                 args.add(allot_alien(false_object,(cell)argv[i]));
 159
 160         args.trim();
 161         special_objects[OBJ_ARGS] = args.elements.value();
 162 }
 163
 164 void factor_vm::start_factor(vm_parameters *p)
 165 {
 166         if(p->fep) factorbug();
 167
 168         nest_stacks();
 169         c_to_factor_toplevel(special_objects[OBJ_STARTUP_QUOT]);
 170         unnest_stacks();
 171 }
 172
 173 void factor_vm::stop_factor()
 174 {
 175         nest_stacks();
 176         c_to_factor_toplevel(special_objects[OBJ_SHUTDOWN_QUOT]);
 177         unnest_stacks();
 178 }
 179
 180 char *factor_vm::factor_eval_string(char *string)
 181 {
 182         char *(*callback)(char *) = (char *(*)(char *))alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 183         return callback(string);
 184 }
 185
 186 void factor_vm::factor_eval_free(char *result)
 187 {
 188         free(result);
 189 }
 190
 191 void factor_vm::factor_yield()
 192 {
 193         void (*callback)() = (void (*)())alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 194         callback();
 195 }
 196
 197 void factor_vm::factor_sleep(long us)
 198 {
 199         void (*callback)(long) = (void (*)(long))alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 200         callback(us);
 201 }
 202
 203 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 204 {
 205         vm_parameters p;
 206         default_parameters(&p);
 207         init_parameters_from_args(&p,argc,argv);
 208         init_factor(&p);
 209         pass_args_to_factor(argc,argv);
 210         start_factor(&p);
 211 }
 212
 213 struct startargs {
 214         int argc;
 215         vm_char **argv;
 216 };
 217
 218 factor_vm *new_factor_vm()
 219 {
 220         factor_vm *newvm = new factor_vm();
 221         register_vm_with_thread(newvm);
 222         thread_vms[thread_id()] = newvm;
 223
 224         return newvm;
 225 }
 226
 227 // arg must be new'ed because we're going to delete it!
 228 void* start_standalone_factor_thread(void *arg)
 229 {
 230         factor_vm *newvm = new_factor_vm();
 231         startargs *args = (startargs*) arg;
 232         int argc = args->argc; vm_char **argv = args->argv;
 233         delete args;
 234         newvm->start_standalone_factor(argc, argv);
 235         return 0;
 236 }
 237
 238 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 239 {
 240         factor_vm *newvm = new_factor_vm();
 241         vm = newvm;
 242         return newvm->start_standalone_factor(argc,argv);
 243 }
 244
 245 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 246 {
 247         startargs *args = new startargs;
 248         args->argc = argc; args->argv = argv;
 249         return start_thread(start_standalone_factor_thread,args);
 250 }
 251
 252 }