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         p->callstack_size = 128 * sizeof(cell);
  18
  19         p->code_size = 8 * sizeof(cell);
  20         p->young_size = sizeof(cell) / 4;
  21         p->aging_size = sizeof(cell) / 2;
  22         p->tenured_size = 24 * sizeof(cell);
  23
  24         p->max_pic_size = 3;
  25
  26         p->fep = false;
  27         p->signals = true;
  28
  29 #ifdef WINDOWS
  30         p->console = false;
  31 #else
  32         p->console = true;
  33 #endif
  34
  35         p->callback_size = 256;
  36 }
  37
  38 bool factor_vm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  39 {
  40         int val;
  41         if(SSCANF(str,arg,&val) > 0)
  42         {
  43                 *value = val;
  44                 return true;
  45         }
  46         else
  47                 return false;
  48 }
  49
  50 void factor_vm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  51 {
  52         default_parameters(p);
  53         p->executable_path = argv[0];
  54
  55         int i = 0;
  56
  57         for(i = 1; i < argc; i++)
  58         {
  59                 vm_char *arg = argv[i];
  60                 if(STRCMP(arg,STRING_LITERAL("--")) == 0) break;
  61                 else if(factor_arg(arg,STRING_LITERAL("-datastack=%d"),&p->datastack_size));
  62                 else if(factor_arg(arg,STRING_LITERAL("-retainstack=%d"),&p->retainstack_size));
  63                 else if(factor_arg(arg,STRING_LITERAL("-callstack=%d"),&p->callstack_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->datastack_size = align_page(p->datastack_size << 10);
  95         p->retainstack_size = align_page(p->retainstack_size << 10);
  96         p->callstack_size = align_page(p->callstack_size << 10);
  97         p->callback_size = align_page(p->callback_size << 10);
  98
  99         /* Megabytes */
 100         p->young_size <<= 20;
 101         p->aging_size <<= 20;
 102         p->tenured_size <<= 20;
 103         p->code_size <<= 20;
 104
 105         /* Disable GC during init as a sanity check */
 106         gc_off = true;
 107
 108         /* OS-specific initialization */
 109         early_init();
 110
 111         const vm_char *executable_path = vm_executable_path();
 112
 113         if(executable_path)
 114                 p->executable_path = executable_path;
 115
 116         if(p->image_path == NULL)
 117                 p->image_path = default_image_path();
 118
 119         srand((unsigned int)system_micros());
 120         init_ffi();
 121         init_contexts(p->datastack_size,p->retainstack_size,p->callstack_size);
 122         init_callbacks(p->callback_size);
 123         load_image(p);
 124         init_c_io();
 125         init_inline_caching(p->max_pic_size);
 126         if(p->signals)
 127                 init_signals();
 128
 129         if(p->console)
 130                 open_console();
 131
 132         init_profiler();
 133
 134         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 135         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 136         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 137         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 138         special_objects[OBJ_ARGS] = false_object;
 139         special_objects[OBJ_EMBEDDED] = false_object;
 140         special_objects[OBJ_VM_COMPILER] = allot_alien(false_object,(cell)FACTOR_COMPILER_VERSION);
 141
 142         /* We can GC now */
 143         gc_off = false;
 144
 145         if(!to_boolean(special_objects[OBJ_STAGE2]))
 146                 prepare_boot_image();
 147 }
 148
 149 /* May allocate memory */
 150 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 151 {
 152         growable_array args(this);
 153
 154         for(fixnum i = 1; i < argc; i++)
 155                 args.add(allot_alien(false_object,(cell)argv[i]));
 156
 157         args.trim();
 158         special_objects[OBJ_ARGS] = args.elements.value();
 159 }
 160
 161 void factor_vm::start_factor(vm_parameters *p)
 162 {
 163         if(p->fep) factorbug();
 164
 165         c_to_factor_toplevel(special_objects[OBJ_STARTUP_QUOT]);
 166 }
 167
 168 void factor_vm::stop_factor()
 169 {
 170         c_to_factor_toplevel(special_objects[OBJ_SHUTDOWN_QUOT]);
 171 }
 172
 173 char *factor_vm::factor_eval_string(char *string)
 174 {
 175         char *(*callback)(char *) = (char *(*)(char *))alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 176         return callback(string);
 177 }
 178
 179 void factor_vm::factor_eval_free(char *result)
 180 {
 181         free(result);
 182 }
 183
 184 void factor_vm::factor_yield()
 185 {
 186         void (*callback)() = (void (*)())alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 187         callback();
 188 }
 189
 190 void factor_vm::factor_sleep(long us)
 191 {
 192         void (*callback)(long) = (void (*)(long))alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 193         callback(us);
 194 }
 195
 196 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 197 {
 198         vm_parameters p;
 199         default_parameters(&p);
 200         init_parameters_from_args(&p,argc,argv);
 201         init_factor(&p);
 202         pass_args_to_factor(argc,argv);
 203         start_factor(&p);
 204 }
 205
 206 factor_vm *new_factor_vm()
 207 {
 208         factor_vm *newvm = new factor_vm();
 209         register_vm_with_thread(newvm);
 210         thread_vms[thread_id()] = newvm;
 211
 212         return newvm;
 213 }
 214
 215 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 216 {
 217         factor_vm *newvm = new_factor_vm();
 218         return newvm->start_standalone_factor(argc,argv);
 219 }
 220
 221 }