vm/factor.cpp

   1 #include "master.hpp"
   2
   3 namespace factor
   4 {
   5
   6 factorvm *vm;
   7
   8 unordered_map<long,factorvm*> thread_vms;
   9
  10 factorvm *lookup_vm(unsigned long threadid)
  11 {
  12         return thread_vms[threadid];
  13 }
  14
  15 void register_vm(unsigned long threadid, factorvm *thevm)
  16 {
  17         thread_vms[threadid] = thevm;
  18 }
  19
  20
  21 void factorvm::default_parameters(vm_parameters *p)
  22 {
  23         p->image_path = NULL;
  24
  25         /* We make a wild guess here that if we're running on ARM, we don't
  26         have a lot of memory. */
  27 #ifdef FACTOR_ARM
  28         p->ds_size = 8 * sizeof(cell);
  29         p->rs_size = 8 * sizeof(cell);
  30
  31         p->gen_count = 2;
  32         p->code_size = 4;
  33         p->young_size = 1;
  34         p->aging_size = 1;
  35         p->tenured_size = 6;
  36 #else
  37         p->ds_size = 32 * sizeof(cell);
  38         p->rs_size = 32 * sizeof(cell);
  39
  40         p->gen_count = 3;
  41         p->code_size = 8 * sizeof(cell);
  42         p->young_size = sizeof(cell) / 4;
  43         p->aging_size = sizeof(cell) / 2;
  44         p->tenured_size = 4 * sizeof(cell);
  45 #endif
  46
  47         p->max_pic_size = 3;
  48
  49         p->secure_gc = false;
  50         p->fep = false;
  51
  52 #ifdef WINDOWS
  53         p->console = false;
  54 #else
  55         if (this == vm)
  56                 p->console = true;
  57         else
  58                 p->console = false;
  59
  60 #endif
  61
  62         p->stack_traces = true;
  63 }
  64
  65 bool factorvm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  66 {
  67         int val;
  68         if(SSCANF(str,arg,&val) > 0)
  69         {
  70                 *value = val;
  71                 return true;
  72         }
  73         else
  74                 return false;
  75 }
  76
  77 void factorvm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  78 {
  79         default_parameters(p);
  80         p->executable_path = argv[0];
  81
  82         int i = 0;
  83
  84         for(i = 1; i < argc; i++)
  85         {
  86                 if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
  87                 else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  88                 else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
  89                 else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
  90                 else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
  91                 else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  92                 else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
  93                 else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  94                 else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
  95                 else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
  96                 else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
  97                 else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
  98                 else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
  99         }
 100 }
 101
 102 /* Do some initialization that we do once only */
 103 void factorvm::do_stage1_init()
 104 {
 105         print_string("*** Stage 2 early init... ");
 106         fflush(stdout);
 107
 108         compile_all_words();
 109         userenv[STAGE2_ENV] = T;
 110
 111         print_string("done\n");
 112         fflush(stdout);
 113 }
 114
 115 void factorvm::init_factor(vm_parameters *p)
 116 {
 117         /* Kilobytes */
 118         p->ds_size = align_page(p->ds_size << 10);
 119         p->rs_size = align_page(p->rs_size << 10);
 120
 121         /* Megabytes */
 122         p->young_size <<= 20;
 123         p->aging_size <<= 20;
 124         p->tenured_size <<= 20;
 125         p->code_size <<= 20;
 126
 127         /* Disable GC during init as a sanity check */
 128         gc_off = true;
 129
 130         /* OS-specific initialization */
 131         early_init();
 132
 133         const vm_char *executable_path = vm_executable_path();
 134
 135         if(executable_path)
 136                 p->executable_path = executable_path;
 137
 138         if(p->image_path == NULL)
 139                 p->image_path = default_image_path();
 140
 141         srand(current_micros());
 142         init_ffi();
 143         init_stacks(p->ds_size,p->rs_size);
 144         load_image(p);
 145         init_c_io();
 146         init_inline_caching(p->max_pic_size);
 147         init_signals();
 148
 149         if(p->console)
 150                 open_console();
 151
 152         init_profiler();
 153
 154         userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
 155         userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
 156         userenv[CELL_SIZE_ENV] = tag_fixnum(sizeof(cell));
 157         userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
 158         userenv[ARGS_ENV] = F;
 159         userenv[EMBEDDED_ENV] = F;
 160
 161         /* We can GC now */
 162         gc_off = false;
 163
 164         if(userenv[STAGE2_ENV] == F)
 165         {
 166                 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
 167                 do_stage1_init();
 168         }
 169 }
 170
 171 /* May allocate memory */
 172 void factorvm::pass_args_to_factor(int argc, vm_char **argv)
 173 {
 174         growable_array args(this);
 175         int i;
 176
 177         for(i = 1; i < argc; i++){
 178                 args.add(allot_alien(F,(cell)argv[i]));
 179         }
 180
 181         args.trim();
 182         userenv[ARGS_ENV] = args.elements.value();
 183 }
 184
 185 void factorvm::start_factor(vm_parameters *p)
 186 {
 187         if(p->fep) factorbug();
 188
 189         nest_stacks();
 190         c_to_factor_toplevel(userenv[BOOT_ENV]);
 191         unnest_stacks();
 192 }
 193
 194
 195 char *factorvm::factor_eval_string(char *string)
 196 {
 197         char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
 198         return callback(string);
 199 }
 200
 201 void factorvm::factor_eval_free(char *result)
 202 {
 203         free(result);
 204 }
 205
 206 void factorvm::factor_yield()
 207 {
 208         void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
 209         callback();
 210 }
 211
 212 void factorvm::factor_sleep(long us)
 213 {
 214         void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
 215         callback(us);
 216 }
 217
 218 void factorvm::start_standalone_factor(int argc, vm_char **argv)
 219 {
 220         register_vm(thread_id(),this);
 221         vm_parameters p;
 222         default_parameters(&p);
 223         init_parameters_from_args(&p,argc,argv);
 224         init_factor(&p);
 225         pass_args_to_factor(argc,argv);
 226         start_factor(&p);
 227 }
 228
 229 struct startargs {
 230         int argc;
 231         vm_char **argv;
 232 };
 233
 234 void* start_standalone_factor_thread(void *arg)
 235 {
 236         factorvm *newvm = new factorvm;
 237         startargs *args = (startargs*) arg;
 238         newvm->start_standalone_factor(args->argc, args->argv);
 239         return 0;
 240 }
 241
 242
 243 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 244 {
 245         factorvm *newvm = new factorvm;
 246         vm = newvm;
 247         return newvm->start_standalone_factor(argc,argv);
 248 }
 249
 250 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 251 {
 252         startargs *args = new startargs;   // leaks startargs structure
 253         args->argc = argc; args->argv = argv;
 254         return start_thread(start_standalone_factor_thread,args);
 255 }
 256
 257 }