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 *vm)
  16 {
  17         thread_vms[threadid] = vm;
  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         p->console = true;
  56 #endif
  57
  58         p->stack_traces = true;
  59 }
  60
  61 bool factorvm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
  62 {
  63         int val;
  64         if(SSCANF(str,arg,&val) > 0)
  65         {
  66                 *value = val;
  67                 return true;
  68         }
  69         else
  70                 return false;
  71 }
  72
  73 void factorvm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
  74 {
  75         default_parameters(p);
  76         p->executable_path = argv[0];
  77
  78         int i = 0;
  79
  80         for(i = 1; i < argc; i++)
  81         {
  82                 if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
  83                 else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
  84                 else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
  85                 else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
  86                 else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
  87                 else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
  88                 else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
  89                 else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
  90                 else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
  91                 else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
  92                 else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
  93                 else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
  94                 else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
  95         }
  96 }
  97
  98 /* Do some initialization that we do once only */
  99 void factorvm::do_stage1_init()
 100 {
 101         print_string("*** Stage 2 early init... ");
 102         fflush(stdout);
 103
 104         compile_all_words();
 105         userenv[STAGE2_ENV] = T;
 106
 107         print_string("done\n");
 108         fflush(stdout);
 109 }
 110
 111 void factorvm::init_factor(vm_parameters *p)
 112 {
 113         /* Kilobytes */
 114         p->ds_size = align_page(p->ds_size << 10);
 115         p->rs_size = align_page(p->rs_size << 10);
 116
 117         /* Megabytes */
 118         p->young_size <<= 20;
 119         p->aging_size <<= 20;
 120         p->tenured_size <<= 20;
 121         p->code_size <<= 20;
 122
 123         /* Disable GC during init as a sanity check */
 124         gc_off = true;
 125
 126         /* OS-specific initialization */
 127         early_init();
 128
 129         const vm_char *executable_path = vm_executable_path();
 130
 131         if(executable_path)
 132                 p->executable_path = executable_path;
 133
 134         if(p->image_path == NULL)
 135                 p->image_path = default_image_path();
 136
 137         srand(current_micros());
 138         init_ffi();
 139         init_stacks(p->ds_size,p->rs_size);
 140         load_image(p);
 141         init_c_io();
 142         init_inline_caching(p->max_pic_size);
 143         init_signals();
 144
 145         if(p->console)
 146                 open_console();
 147
 148         init_profiler();
 149
 150         userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
 151         userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
 152         userenv[CELL_SIZE_ENV] = tag_fixnum(sizeof(cell));
 153         userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
 154         userenv[ARGS_ENV] = F;
 155         userenv[EMBEDDED_ENV] = F;
 156
 157         /* We can GC now */
 158         gc_off = false;
 159
 160         if(userenv[STAGE2_ENV] == F)
 161         {
 162                 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
 163                 do_stage1_init();
 164         }
 165 }
 166
 167 /* May allocate memory */
 168 void factorvm::pass_args_to_factor(int argc, vm_char **argv)
 169 {
 170         growable_array args(this);
 171         int i;
 172
 173         for(i = 1; i < argc; i++){
 174                 args.add(allot_alien(F,(cell)argv[i]));
 175         }
 176
 177         args.trim();
 178         userenv[ARGS_ENV] = args.elements.value();
 179 }
 180
 181 void factorvm::start_factor(vm_parameters *p)
 182 {
 183         if(p->fep) factorbug();
 184
 185         nest_stacks();
 186         c_to_factor_toplevel(userenv[BOOT_ENV]);
 187         unnest_stacks();
 188 }
 189
 190
 191 char *factorvm::factor_eval_string(char *string)
 192 {
 193         char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
 194         return callback(string);
 195 }
 196
 197 void factorvm::factor_eval_free(char *result)
 198 {
 199         free(result);
 200 }
 201
 202 void factorvm::factor_yield()
 203 {
 204         void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
 205         callback();
 206 }
 207
 208 void factorvm::factor_sleep(long us)
 209 {
 210         void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
 211         callback(us);
 212 }
 213
 214 void factorvm::start_standalone_factor(int argc, vm_char **argv)
 215 {
 216         register_vm(thread_id(),this);
 217         vm_parameters p;
 218         default_parameters(&p);
 219         init_parameters_from_args(&p,argc,argv);
 220         init_factor(&p);
 221         pass_args_to_factor(argc,argv);
 222         start_factor(&p);
 223 }
 224
 225 struct startargs {
 226         int argc;
 227         vm_char **argv;
 228 };
 229
 230 void* start_standalone_factor_thread(void *arg)
 231 {
 232         factorvm *newvm = new factorvm;
 233         startargs *args = (startargs*) arg;
 234         newvm->start_standalone_factor(args->argc, args->argv);
 235         return 0;
 236 }
 237
 238
 239 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
 240 {
 241         factorvm *newvm = new factorvm;
 242         vm = newvm;
 243         return newvm->start_standalone_factor(argc,argv);
 244 }
 245
 246 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
 247 {
 248         startargs *args = new startargs;   // leaks startargs structure
 249         args->argc = argc; args->argv = argv;
 250         return start_thread(start_standalone_factor_thread,args);
 251 }
 252
 253 }