vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 factorvm *vm;
   7
   8 void init_globals()
   9 {
  10         init_platform_globals();
  11 }
  12
  13 void factorvm::default_parameters(vm_parameters *p)
  14 {
  15         p->image_path = NULL;
  16
  17         /* We make a wild guess here that if we're running on ARM, we don't
  18         have a lot of memory. */
  19 #ifdef FACTOR_ARM
  20         p->ds_size = 8 * sizeof(cell);
  21         p->rs_size = 8 * sizeof(cell);
  22
  23         p->gen_count = 2;
  24         p->code_size = 4;
  25         p->young_size = 1;
  26         p->aging_size = 1;
  27         p->tenured_size = 6;
  28 #else
  29         p->ds_size = 32 * sizeof(cell);
  30         p->rs_size = 32 * sizeof(cell);
  31
  32         p->gen_count = 3;
  33         p->code_size = 8 * sizeof(cell);
  34         p->young_size = sizeof(cell) / 4;
  35         p->aging_size = sizeof(cell) / 2;
  36         p->tenured_size = 4 * sizeof(cell);
  37 #endif
  38
  39         p->max_pic_size = 3;
  40
  41         p->secure_gc = false;
  42         p->fep = false;
  43
  44 #ifdef WINDOWS
  45         p->console = false;
  46 #else
  47         if (this == vm)
  48                 p->console = true;
  49         else
  50                 p->console = false;
  51
  52 #endif
  53
  54         p->stack_traces = true;
  55 }
  56
  57 bool factorvm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  58 {
  59         int val;
  60         if(SSCANF(str,arg,&val) > 0)
  61         {
  62                 *value = val;
  63                 return true;
  64         }
  65         else
  66                 return false;
  67 }
  68
  69 void factorvm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  70 {
  71         default_parameters(p);
  72         p->executable_path = argv[0];
  73
  74         int i = 0;
  75
  76         for(i = 1; i < argc; i++)
  77         {
  78                 if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
  79                 else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  80                 else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
  81                 else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
  82                 else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
  83                 else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  84                 else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
  85                 else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  86                 else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
  87                 else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
  88                 else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
  89                 else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
  90                 else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
  91         }
  92 }
  93
  94 /* Do some initialization that we do once only */
  95 void factorvm::do_stage1_init()
  96 {
  97         print_string("*** Stage 2 early init... ");
  98         fflush(stdout);
  99
 100         compile_all_words();
 101         userenv[STAGE2_ENV] = T;
 102
 103         print_string("done\n");
 104         fflush(stdout);
 105 }
 106
 107 void factorvm::init_factor(vm_parameters *p)
 108 {
 109         /* Kilobytes */
 110         p->ds_size = align_page(p->ds_size << 10);
 111         p->rs_size = align_page(p->rs_size << 10);
 112
 113         /* Megabytes */
 114         p->young_size <<= 20;
 115         p->aging_size <<= 20;
 116         p->tenured_size <<= 20;
 117         p->code_size <<= 20;
 118
 119         /* Disable GC during init as a sanity check */
 120         gc_off = true;
 121
 122         /* OS-specific initialization */
 123         early_init();
 124
 125         const vm_char *executable_path = vm_executable_path();
 126
 127         if(executable_path)
 128                 p->executable_path = executable_path;
 129
 130         if(p->image_path == NULL)
 131                 p->image_path = default_image_path();
 132
 133         srand(current_micros());
 134         init_ffi();
 135         init_stacks(p->ds_size,p->rs_size);
 136         load_image(p);
 137         init_c_io();
 138         init_inline_caching(p->max_pic_size);
 139         init_signals();
 140
 141         if(p->console)
 142                 open_console();
 143
 144         init_profiler();
 145
 146         userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
 147         userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
 148         userenv[CELL_SIZE_ENV] = tag_fixnum(sizeof(cell));
 149         userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
 150         userenv[ARGS_ENV] = F;
 151         userenv[EMBEDDED_ENV] = F;
 152
 153         /* We can GC now */
 154         gc_off = false;
 155
 156         if(userenv[STAGE2_ENV] == F)
 157         {
 158                 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
 159                 do_stage1_init();
 160         }
 161 }
 162
 163 /* May allocate memory */
 164 void factorvm::pass_args_to_factor(int argc, vm_char **argv)
 165 {
 166         growable_array args(this);
 167         int i;
 168
 169         for(i = 1; i < argc; i++){
 170                 args.add(allot_alien(F,(cell)argv[i]));
 171         }
 172
 173         args.trim();
 174         userenv[ARGS_ENV] = args.elements.value();
 175 }
 176
 177 void factorvm::start_factor(vm_parameters *p)
 178 {
 179         if(p->fep) factorbug();
 180
 181         nest_stacks();
 182         c_to_factor_toplevel(userenv[BOOT_ENV]);
 183         unnest_stacks();
 184 }
 185
 186 char *factorvm::factor_eval_string(char *string)
 187 {
 188         char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
 189         return callback(string);
 190 }
 191
 192 void factorvm::factor_eval_free(char *result)
 193 {
 194         free(result);
 195 }
 196
 197 void factorvm::factor_yield()
 198 {
 199         void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
 200         callback();
 201 }
 202
 203 void factorvm::factor_sleep(long us)
 204 {
 205         void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
 206         callback(us);
 207 }
 208
 209 void factorvm::start_standalone_factor(int argc, vm_char **argv)
 210 {
 211         vm_parameters p;
 212         default_parameters(&p);
 213         init_parameters_from_args(&p,argc,argv);
 214         init_factor(&p);
 215         pass_args_to_factor(argc,argv);
 216         start_factor(&p);
 217 }
 218
 219 struct startargs {
 220         int argc;
 221         vm_char **argv;
 222 };
 223
 224 void* start_standalone_factor_thread(void *arg)
 225 {
 226         factorvm *newvm = new factorvm;
 227         register_vm_with_thread(newvm);
 228         startargs *args = (startargs*) arg;
 229         newvm->start_standalone_factor(args->argc, args->argv);
 230         return 0;
 231 }
 232
 233 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 234 {
 235         factorvm *newvm = new factorvm;
 236         vm = newvm;
 237         register_vm_with_thread(newvm);
 238         return newvm->start_standalone_factor(argc,argv);
 239 }
 240
 241 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 242 {
 243         startargs *args = new startargs;   // leaks startargs structure
 244         args->argc = argc; args->argv = argv;
 245         return start_thread(start_standalone_factor_thread,args);
 246 }
 247
 248 }