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 #ifdef __OpenBSD__
  19         p->callstack_size = 32 * sizeof(cell);
  20 #else
  21         p->callstack_size = 128 * sizeof(cell);
  22 #endif
  23
  24         p->code_size = 8 * sizeof(cell);
  25         p->young_size = sizeof(cell) / 4;
  26         p->aging_size = sizeof(cell) / 2;
  27         p->tenured_size = 24 * sizeof(cell);
  28
  29         p->max_pic_size = 3;
  30
  31         p->fep = false;
  32         p->signals = true;
  33
  34 #ifdef WINDOWS
  35         p->console = false;
  36 #else
  37         p->console = true;
  38 #endif
  39
  40         p->callback_size = 256;
  41 }
  42
  43 bool factor_vm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  44 {
  45         int val;
  46         if(SSCANF(str,arg,&val) > 0)
  47         {
  48                 *value = val;
  49                 return true;
  50         }
  51         else
  52                 return false;
  53 }
  54
  55 void factor_vm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  56 {
  57         default_parameters(p);
  58         p->executable_path = argv[0];
  59
  60         int i = 0;
  61
  62         for(i = 1; i < argc; i++)
  63         {
  64                 vm_char *arg = argv[i];
  65                 if(STRCMP(arg,STRING_LITERAL("--")) == 0) break;
  66                 else if(factor_arg(arg,STRING_LITERAL("-datastack=%d"),&p->datastack_size));
  67                 else if(factor_arg(arg,STRING_LITERAL("-retainstack=%d"),&p->retainstack_size));
  68                 else if(factor_arg(arg,STRING_LITERAL("-callstack=%d"),&p->callstack_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(true);
  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->datastack_size = align_page(p->datastack_size << 10);
 100         p->retainstack_size = align_page(p->retainstack_size << 10);
 101         p->callstack_size = align_page(p->callstack_size << 10);
 102         p->callback_size = align_page(p->callback_size << 10);
 103
 104         /* Megabytes */
 105         p->young_size <<= 20;
 106         p->aging_size <<= 20;
 107         p->tenured_size <<= 20;
 108         p->code_size <<= 20;
 109
 110         /* Disable GC during init as a sanity check */
 111         gc_off = true;
 112
 113         /* OS-specific initialization */
 114         early_init();
 115
 116         const vm_char *executable_path = vm_executable_path();
 117
 118         if(executable_path)
 119                 p->executable_path = executable_path;
 120
 121         if(p->image_path == NULL)
 122                 p->image_path = default_image_path();
 123
 124         srand((unsigned int)system_micros());
 125         init_ffi();
 126         init_contexts(p->datastack_size,p->retainstack_size,p->callstack_size);
 127         init_callbacks(p->callback_size);
 128         load_image(p);
 129         init_c_io();
 130         init_inline_caching(p->max_pic_size);
 131         if(p->signals)
 132                 init_signals();
 133
 134         if(p->console)
 135                 open_console();
 136
 137         init_profiler();
 138
 139         special_objects[OBJ_CPU] = allot_alien(false_object,(cell)FACTOR_CPU_STRING);
 140         special_objects[OBJ_OS] = allot_alien(false_object,(cell)FACTOR_OS_STRING);
 141         special_objects[OBJ_CELL_SIZE] = tag_fixnum(sizeof(cell));
 142         special_objects[OBJ_EXECUTABLE] = allot_alien(false_object,(cell)p->executable_path);
 143         special_objects[OBJ_ARGS] = false_object;
 144         special_objects[OBJ_EMBEDDED] = false_object;
 145         special_objects[OBJ_VM_COMPILER] = allot_alien(false_object,(cell)FACTOR_COMPILER_VERSION);
 146
 147         /* We can GC now */
 148         gc_off = false;
 149
 150         if(!to_boolean(special_objects[OBJ_STAGE2]))
 151                 prepare_boot_image();
 152 }
 153
 154 /* May allocate memory */
 155 void factor_vm::pass_args_to_factor(int argc, vm_char **argv)
 156 {
 157         growable_array args(this);
 158
 159         for(fixnum i = 1; i < argc; i++)
 160                 args.add(allot_alien(false_object,(cell)argv[i]));
 161
 162         args.trim();
 163         special_objects[OBJ_ARGS] = args.elements.value();
 164 }
 165
 166 void factor_vm::start_factor(vm_parameters *p)
 167 {
 168         if(p->fep) factorbug();
 169
 170         c_to_factor_toplevel(special_objects[OBJ_STARTUP_QUOT]);
 171 }
 172
 173 void factor_vm::stop_factor()
 174 {
 175         c_to_factor_toplevel(special_objects[OBJ_SHUTDOWN_QUOT]);
 176 }
 177
 178 char *factor_vm::factor_eval_string(char *string)
 179 {
 180         char *(*callback)(char *) = (char *(*)(char *))alien_offset(special_objects[OBJ_EVAL_CALLBACK]);
 181         return callback(string);
 182 }
 183
 184 void factor_vm::factor_eval_free(char *result)
 185 {
 186         free(result);
 187 }
 188
 189 void factor_vm::factor_yield()
 190 {
 191         void (*callback)() = (void (*)())alien_offset(special_objects[OBJ_YIELD_CALLBACK]);
 192         callback();
 193 }
 194
 195 void factor_vm::factor_sleep(long us)
 196 {
 197         void (*callback)(long) = (void (*)(long))alien_offset(special_objects[OBJ_SLEEP_CALLBACK]);
 198         callback(us);
 199 }
 200
 201 void factor_vm::start_standalone_factor(int argc, vm_char **argv)
 202 {
 203         vm_parameters p;
 204         default_parameters(&p);
 205         init_parameters_from_args(&p,argc,argv);
 206         init_factor(&p);
 207         pass_args_to_factor(argc,argv);
 208         start_factor(&p);
 209 }
 210
 211 factor_vm *new_factor_vm()
 212 {
 213         factor_vm *newvm = new factor_vm();
 214         register_vm_with_thread(newvm);
 215         thread_vms[thread_id()] = newvm;
 216
 217         return newvm;
 218 }
 219
 220 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 221 {
 222         factor_vm *newvm = new_factor_vm();
 223         return newvm->start_standalone_factor(argc,argv);
 224 }
 225
 226 }