vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 std::map<THREADHANDLE, factor_vm*> thread_vms;
   7
   8 void init_globals()
   9 {
  10         init_platform_globals();
  11 }
  12
  13 void factor_vm::default_parameters(vm_parameters *p)
  14 {
  15         p->image_path = NULL;
  16
  17         p->ds_size = 32 * sizeof(cell);
  18         p->rs_size = 32 * sizeof(cell);
  19
  20         p->code_size = 8 * sizeof(cell);
  21         p->young_size = sizeof(cell) / 4;
  22         p->aging_size = sizeof(cell) / 2;
  23         p->tenured_size = 24 * sizeof(cell);
  24
  25         p->max_pic_size = 3;
  26
  27         p->fep = false;
  28         p->signals = true;
  29
  30 #ifdef WINDOWS
  31         p->console = false;
  32 #else
  33         p->console = true;
  34 #endif
  35
  36         p->callback_size = 256;
  37 }
  38
  39 bool factor_vm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  40 {
  41         int val;
  42         if(SSCANF(str,arg,&val) > 0)
  43         {
  44                 *value = val;
  45                 return true;
  46         }
  47         else
  48                 return false;
  49 }
  50
  51 void factor_vm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  52 {
  53         default_parameters(p);
  54         p->executable_path = argv[0];
  55
  56         int i = 0;
  57
  58         for(i = 1; i < argc; i++)
  59         {
  60                 vm_char *arg = argv[i];
  61                 if(STRCMP(arg,STRING_LITERAL("--")) == 0) break;
  62                 else if(factor_arg(arg,STRING_LITERAL("-datastack=%d"),&p->ds_size));
  63                 else if(factor_arg(arg,STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  64                 else if(factor_arg(arg,STRING_LITERAL("-young=%d"),&p->young_size));
  65                 else if(factor_arg(arg,STRING_LITERAL("-aging=%d"),&p->aging_size));
  66                 else if(factor_arg(arg,STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  67                 else if(factor_arg(arg,STRING_LITERAL("-codeheap=%d"),&p->code_size));
  68                 else if(factor_arg(arg,STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  69                 else if(factor_arg(arg,STRING_LITERAL("-callbacks=%d"),&p->callback_size));
  70                 else if(STRCMP(arg,STRING_LITERAL("-fep")) == 0) p->fep = true;
  71                 else if(STRCMP(arg,STRING_LITERAL("-nosignals")) == 0) p->signals = false;
  72                 else if(STRNCMP(arg,STRING_LITERAL("-i="),3) == 0) p->image_path = arg + 3;
  73                 else if(STRCMP(arg,STRING_LITERAL("-console")) == 0) p->console = true;
  74         }
  75 }
  76
  77 /* Compile code in boot image so that we can execute the startup quotation */
  78 void factor_vm::prepare_boot_image()
  79 {
  80         std::cout << "*** Stage 2 early init... ";
  81         fflush(stdout);
  82
  83         compile_all_words();
  84         update_code_heap_words(true);
  85         initialize_all_quotations();
  86         special_objects[OBJ_STAGE2] = true_object;
  87
  88         std::cout << "done\n";
  89 }
  90
  91 void factor_vm::init_factor(vm_parameters *p)
  92 {
  93         /* Kilobytes */
  94         p->ds_size = align_page(p->ds_size << 10);
  95         p->rs_size = align_page(p->rs_size << 10);
  96         p->callback_size = align_page(p->callback_size << 10);
  97
  98         /* Megabytes */
  99         p->young_size <<= 20;
 100         p->aging_size <<= 20;
 101         p->tenured_size <<= 20;
 102         p->code_size <<= 20;
 103
 104         /* Disable GC during init as a sanity check */
 105         gc_off = true;
 106
 107         /* OS-specific initialization */
 108         early_init();
 109
 110         const vm_char *executable_path = vm_executable_path();
 111
 112         if(executable_path)
 113                 p->executable_path = executable_path;
 114
 115         if(p->image_path == NULL)
 116                 p->image_path = default_image_path();
 117
 118         srand((unsigned int)system_micros());
 119         init_ffi();
 120         init_stacks(p->ds_size,p->rs_size);
 121         init_callbacks(p->callback_size);
 122         load_image(p);
 123         init_c_io();
 124         init_inline_caching(p->max_pic_size);
 125         if(p->signals)
 126                 init_signals();
 127
 128         if(p->console)
 129                 open_console();
 130
 131         init_profiler();
 132
 133         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 134         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 135         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 136         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 137         special_objects[OBJ_ARGS] = false_object;
 138         special_objects[OBJ_EMBEDDED] = false_object;
 139         special_objects[OBJ_VM_COMPILER] = allot_alien(false_object,(cell)FACTOR_COMPILER_VERSION);
 140
 141         /* We can GC now */
 142         gc_off = false;
 143
 144         if(!to_boolean(special_objects[OBJ_STAGE2]))
 145                 prepare_boot_image();
 146 }
 147
 148 /* May allocate memory */
 149 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 150 {
 151         growable_array args(this);
 152
 153         for(fixnum i = 1; i < argc; i++)
 154                 args.add(allot_alien(false_object,(cell)argv[i]));
 155
 156         args.trim();
 157         special_objects[OBJ_ARGS] = args.elements.value();
 158 }
 159
 160 void factor_vm::start_factor(vm_parameters *p)
 161 {
 162         if(p->fep) factorbug();
 163
 164         nest_stacks();
 165         c_to_factor_toplevel(special_objects[OBJ_STARTUP_QUOT]);
 166         unnest_stacks();
 167 }
 168
 169 void factor_vm::stop_factor()
 170 {
 171         nest_stacks();
 172         c_to_factor_toplevel(special_objects[OBJ_SHUTDOWN_QUOT]);
 173         unnest_stacks();
 174 }
 175
 176 char *factor_vm::factor_eval_string(char *string)
 177 {
 178         char *(*callback)(char *) = (char *(*)(char *))alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 179         return callback(string);
 180 }
 181
 182 void factor_vm::factor_eval_free(char *result)
 183 {
 184         free(result);
 185 }
 186
 187 void factor_vm::factor_yield()
 188 {
 189         void (*callback)() = (void (*)())alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 190         callback();
 191 }
 192
 193 void factor_vm::factor_sleep(long us)
 194 {
 195         void (*callback)(long) = (void (*)(long))alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 196         callback(us);
 197 }
 198
 199 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 200 {
 201         vm_parameters p;
 202         default_parameters(&p);
 203         init_parameters_from_args(&p,argc,argv);
 204         init_factor(&p);
 205         pass_args_to_factor(argc,argv);
 206         start_factor(&p);
 207 }
 208
 209 struct startargs {
 210         int argc;
 211         vm_char **argv;
 212 };
 213
 214 factor_vm *new_factor_vm()
 215 {
 216         factor_vm *newvm = new factor_vm();
 217         register_vm_with_thread(newvm);
 218         thread_vms[thread_id()] = newvm;
 219
 220         return newvm;
 221 }
 222
 223 // arg must be new'ed because we're going to delete it!
 224 void *start_standalone_factor_thread(void *arg)
 225 {
 226         factor_vm *newvm = new_factor_vm();
 227         startargs *args = (startargs*) arg;
 228         int argc = args->argc; vm_char **argv = args->argv;
 229         delete args;
 230         newvm->start_standalone_factor(argc, argv);
 231         return 0;
 232 }
 233
 234 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 235 {
 236         factor_vm *newvm = new_factor_vm();
 237         return newvm->start_standalone_factor(argc,argv);
 238 }
 239
 240 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 241 {
 242         startargs *args = new startargs;
 243         args->argc = argc; args->argv = argv;
 244         return start_thread(start_standalone_factor_thread,args);
 245 }
 246
 247 }