10 init_platform_globals();
13 void factorvm::default_parameters(vm_parameters *p)
17 /* We make a wild guess here that if we're running on ARM, we don't
18 have a lot of memory. */
20 p->ds_size = 8 * sizeof(cell);
21 p->rs_size = 8 * sizeof(cell);
29 p->ds_size = 32 * sizeof(cell);
30 p->rs_size = 32 * sizeof(cell);
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);
54 p->stack_traces = true;
57 bool factorvm::factor_arg(const vm_char* str, const vm_char* arg, cell* value)
60 if(SSCANF(str,arg,&val) > 0)
69 void factorvm::init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
71 default_parameters(p);
72 p->executable_path = argv[0];
76 for(i = 1; i < argc; i++)
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;
94 /* Do some initialization that we do once only */
95 void factorvm::do_stage1_init()
97 print_string("*** Stage 2 early init... ");
101 userenv[STAGE2_ENV] = T;
103 print_string("done\n");
107 void factorvm::init_factor(vm_parameters *p)
110 p->ds_size = align_page(p->ds_size << 10);
111 p->rs_size = align_page(p->rs_size << 10);
114 p->young_size <<= 20;
115 p->aging_size <<= 20;
116 p->tenured_size <<= 20;
119 /* Disable GC during init as a sanity check */
122 /* OS-specific initialization */
125 const vm_char *executable_path = vm_executable_path();
128 p->executable_path = executable_path;
130 if(p->image_path == NULL)
131 p->image_path = default_image_path();
133 srand(current_micros());
135 init_stacks(p->ds_size,p->rs_size);
138 init_inline_caching(p->max_pic_size);
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;
156 if(userenv[STAGE2_ENV] == F)
158 userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
163 /* May allocate memory */
164 void factorvm::pass_args_to_factor(int argc, vm_char **argv)
166 growable_array args(this);
169 for(i = 1; i < argc; i++){
170 args.add(allot_alien(F,(cell)argv[i]));
174 userenv[ARGS_ENV] = args.elements.value();
177 void factorvm::start_factor(vm_parameters *p)
179 if(p->fep) factorbug();
182 c_to_factor_toplevel(userenv[BOOT_ENV]);
187 char *factorvm::factor_eval_string(char *string)
189 char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
190 return callback(string);
193 void factorvm::factor_eval_free(char *result)
198 void factorvm::factor_yield()
200 void (*callback)() = (void (*)())alien_offset(userenv[YIELD_CALLBACK_ENV]);
204 void factorvm::factor_sleep(long us)
206 void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
210 void factorvm::start_standalone_factor(int argc, vm_char **argv)
213 default_parameters(&p);
214 init_parameters_from_args(&p,argc,argv);
216 pass_args_to_factor(argc,argv);
225 void* start_standalone_factor_thread(void *arg)
227 factorvm *newvm = new factorvm;
228 register_vm_with_thread(newvm);
229 startargs *args = (startargs*) arg;
230 newvm->start_standalone_factor(args->argc, args->argv);
235 VM_C_API void start_standalone_factor(int argc, vm_char **argv)
237 factorvm *newvm = new factorvm;
239 register_vm_with_thread(newvm);
240 return newvm->start_standalone_factor(argc,argv);
243 VM_C_API THREADHANDLE start_standalone_factor_in_new_thread(int argc, vm_char **argv)
245 startargs *args = new startargs; // leaks startargs structure
246 args->argc = argc; args->argv = argv;
247 return start_thread(start_standalone_factor_thread,args);
250 // if you change this struct, also change vm.factor k--------
251 context *stack_chain;
252 zone nursery; /* new objects are allocated here */
255 cell userenv[USER_ENV]; /* TAGGED user environment data; see getenv/setenv prims */
257 // -------------------------------
260 cell ds_size, rs_size;
261 context *unused_contexts;
264 cell T; /* Canonical T object. It's just a word */
270 /* Global variables used to pass fault handler state from signal handler to
273 cell signal_fault_addr;
274 unsigned int signal_fpu_status;
275 stack_frame *signal_callstack_top;
278 bool secure_gc; /* Set by the -securegc command line argument */
279 bool gc_off; /* GC is off during heap walking */
281 /* A heap walk allows useful things to be done, like finding all
282 references to an object for debugging purposes. */
285 cell allot_markers_offset;
287 /* used during garbage collection only */
290 bool performing_compaction;
292 /* if true, we are collecting aging space for the second time, so if it is still
293 full, we go on to collect tenured */
294 bool collecting_aging_again;
295 /* in case a generation fills up in the middle of a gc, we jump back
296 up to try collecting the next generation. */
298 gc_stats stats[max_gen_count];
302 cell code_heap_scans;
303 /* What generation was being collected when copy_code_heap_roots() was last
304 called? Until the next call to add_code_block(), future
305 collections of younger generations don't have to touch the code
307 cell last_code_heap_scan;
308 /* sometimes we grow the heap */
309 bool growing_data_heap;
310 data_heap *old_data_heap;
313 /* If a runtime function needs to call another function which potentially
314 allocates memory, it must wrap any local variable references to Factor
315 objects in gc_root instances */
316 std::vector<cell> gc_locals;
317 std::vector<cell> gc_bignums;
332 unordered_map<heap_block *,char *> forwarding;
335 cell code_relocation_base;
336 cell data_relocation_base;
339 cell megamorphic_cache_hits;
340 cell megamorphic_cache_misses;
344 cell cold_call_to_ic_transitions;
345 cell ic_to_pic_transitions;
346 cell pic_to_mega_transitions;
347 cell pic_counts[4]; /* PIC_TAG, PIC_HI_TAG, PIC_TUPLE, PIC_HI_TAG_TUPLE */