vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 factorvm *vm;
   7
   8 void factorvm::default_parameters(vm_parameters *p)
   9 {
  10         p->image_path = NULL;
  11
  12         /* We make a wild guess here that if we're running on ARM, we don't
  13         have a lot of memory. */
  14 #ifdef FACTOR_ARM
  15         p->ds_size = 8 * sizeof(cell);
  16         p->rs_size = 8 * sizeof(cell);
  17
  18         p->gen_count = 2;
  19         p->code_size = 4;
  20         p->young_size = 1;
  21         p->aging_size = 1;
  22         p->tenured_size = 6;
  23 #else
  24         p->ds_size = 32 * sizeof(cell);
  25         p->rs_size = 32 * sizeof(cell);
  26
  27         p->gen_count = 3;
  28         p->code_size = 8 * sizeof(cell);
  29         p->young_size = sizeof(cell) / 4;
  30         p->aging_size = sizeof(cell) / 2;
  31         p->tenured_size = 4 * sizeof(cell);
  32 #endif
  33
  34         p->max_pic_size = 3;
  35
  36         p->secure_gc = false;
  37         p->fep = false;
  38
  39 #ifdef WINDOWS
  40         p->console = false;
  41 #else
  42         p->console = true;
  43 #endif
  44
  45         p->stack_traces = true;
  46 }
  47
  48 bool factorvm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  49 {
  50         int val;
  51         if(SSCANF(str,arg,&val) > 0)
  52         {
  53                 *value = val;
  54                 return true;
  55         }
  56         else
  57                 return false;
  58 }
  59
  60 void factorvm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  61 {
  62         default_parameters(p);
  63         p->executable_path = argv[0];
  64
  65         int i = 0;
  66
  67         for(i = 1; i < argc; i++)
  68         {
  69                 if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
  70                 else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  71                 else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
  72                 else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
  73                 else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
  74                 else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  75                 else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
  76                 else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  77                 else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
  78                 else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
  79                 else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
  80                 else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
  81                 else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
  82         }
  83 }
  84
  85 /* Do some initialization that we do once only */
  86 void factorvm::do_stage1_init()
  87 {
  88         print_string("*** Stage 2 early init... ");
  89         fflush(stdout);
  90
  91         compile_all_words();
  92         userenv[STAGE2_ENV] = T;
  93
  94         print_string("done\n");
  95         fflush(stdout);
  96 }
  97
  98 void factorvm::init_factor(vm_parameters *p)
  99 {
 100         /* Kilobytes */
 101         p->ds_size = align_page(p->ds_size << 10);
 102         p->rs_size = align_page(p->rs_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(current_micros());
 125         init_ffi();
 126         init_stacks(p->ds_size,p->rs_size);
 127         load_image(p);
 128         init_c_io();
 129         init_inline_caching(p->max_pic_size);
 130         init_signals();
 131
 132         if(p->console)
 133                 open_console();
 134
 135         init_profiler();
 136
 137         userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
 138         userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
 139         userenv[CELL_SIZE_ENV] = tag_fixnum(sizeof(cell));
 140         userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
 141         userenv[ARGS_ENV] = F;
 142         userenv[EMBEDDED_ENV] = F;
 143
 144         /* We can GC now */
 145         gc_off = false;
 146
 147         if(userenv[STAGE2_ENV] == F)
 148         {
 149                 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
 150                 do_stage1_init();
 151         }
 152 }
 153
 154 /* May allocate memory */
 155 void factorvm::pass_args_to_factor(int argc, vm_char **argv)
 156 {
 157         growable_array args(this);
 158         int i;
 159
 160         for(i = 1; i < argc; i++)
 161                 args.add(allot_alien(F,(cell)argv[i]));
 162
 163         args.trim();
 164         userenv[ARGS_ENV] = args.elements.value();
 165 }
 166
 167 void factorvm::start_factor(vm_parameters *p)
 168 {
 169         if(p->fep) factorbug();
 170
 171         nest_stacks();
 172         c_to_factor_toplevel(userenv[BOOT_ENV]);
 173         unnest_stacks();
 174 }
 175
 176
 177 char *factorvm::factor_eval_string(char *string)
 178 {
 179         char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
 180         return callback(string);
 181 }
 182
 183 void factorvm::factor_eval_free(char *result)
 184 {
 185         free(result);
 186 }
 187
 188 void factorvm::factor_yield()
 189 {
 190         void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
 191         callback();
 192 }
 193
 194 void factorvm::factor_sleep(long us)
 195 {
 196         void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
 197         callback(us);
 198 }
 199
 200 void factorvm::start_standalone_factor(int argc, vm_char **argv)
 201 {
 202         vm_parameters p;
 203         default_parameters(&p);
 204         init_parameters_from_args(&p,argc,argv);
 205         init_factor(&p);
 206         pass_args_to_factor(argc,argv);
 207         start_factor(&p);
 208 }
 209
 210 struct startargs {
 211         int argc;
 212         vm_char **argv;
 213 };
 214
 215 void* start_standalone_factor_thread(void *arg)
 216 {
 217         factorvm *newvm = new factorvm;
 218         startargs *args = (startargs*) arg;
 219         newvm->start_standalone_factor(args->argc, args->argv);
 220         return 0;
 221 }
 222
 223
 224 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 225 {
 226         factorvm *newvm = new factorvm;
 227         vm = newvm;
 228         return newvm->start_standalone_factor(argc,argv);
 229 }
 230
 231 VM_C_API void start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 232 {
 233         startargs *args = new startargs;   // leaks startargs structure
 234         args->argc = argc; args->argv = argv;
 235         start_thread(start_standalone_factor_thread,args);
 236 }
 237
 238 }