factor/vm/factor.cpp

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4.8 KiB
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#include "master.hpp"
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namespace factor
{
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VM_C_API void default_parameters(vm_parameters *p)
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{
p->image_path = NULL;
/* We make a wild guess here that if we're running on ARM, we don't
have a lot of memory. */
#ifdef FACTOR_ARM
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p->ds_size = 8 * sizeof(cell);
p->rs_size = 8 * sizeof(cell);
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p->gen_count = 2;
p->code_size = 4;
p->young_size = 1;
p->aging_size = 1;
p->tenured_size = 6;
#else
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p->ds_size = 32 * sizeof(cell);
p->rs_size = 32 * sizeof(cell);
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p->gen_count = 3;
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p->code_size = 8 * sizeof(cell);
p->young_size = sizeof(cell) / 4;
p->aging_size = sizeof(cell) / 2;
p->tenured_size = 4 * sizeof(cell);
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#endif
p->max_pic_size = 3;
p->secure_gc = false;
p->fep = false;
#ifdef WINDOWS
p->console = false;
#else
p->console = true;
#endif
p->stack_traces = true;
}
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static bool factor_arg(const vm_char* str, const vm_char* arg, cell* value)
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{
int val;
if(SSCANF(str,arg,&val) > 0)
{
*value = val;
return true;
}
else
return false;
}
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VM_C_API void init_parameters_from_args(vm_parameters *p, int argc, vm_char **argv)
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{
default_parameters(p);
p->executable_path = argv[0];
int i = 0;
for(i = 1; i < argc; i++)
{
if(factor_arg(argv[i],STRING_LITERAL("-datastack=%d"),&p->ds_size));
else if(factor_arg(argv[i],STRING_LITERAL("-retainstack=%d"),&p->rs_size));
else if(factor_arg(argv[i],STRING_LITERAL("-generations=%d"),&p->gen_count));
else if(factor_arg(argv[i],STRING_LITERAL("-young=%d"),&p->young_size));
else if(factor_arg(argv[i],STRING_LITERAL("-aging=%d"),&p->aging_size));
else if(factor_arg(argv[i],STRING_LITERAL("-tenured=%d"),&p->tenured_size));
else if(factor_arg(argv[i],STRING_LITERAL("-codeheap=%d"),&p->code_size));
else if(factor_arg(argv[i],STRING_LITERAL("-pic=%d"),&p->max_pic_size));
else if(STRCMP(argv[i],STRING_LITERAL("-securegc")) == 0) p->secure_gc = true;
else if(STRCMP(argv[i],STRING_LITERAL("-fep")) == 0) p->fep = true;
else if(STRNCMP(argv[i],STRING_LITERAL("-i="),3) == 0) p->image_path = argv[i] + 3;
else if(STRCMP(argv[i],STRING_LITERAL("-console")) == 0) p->console = true;
else if(STRCMP(argv[i],STRING_LITERAL("-no-stack-traces")) == 0) p->stack_traces = false;
}
}
/* Do some initialization that we do once only */
static void do_stage1_init(void)
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{
print_string("*** Stage 2 early init... ");
fflush(stdout);
compile_all_words();
userenv[STAGE2_ENV] = T;
print_string("done\n");
fflush(stdout);
}
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VM_C_API void init_factor(vm_parameters *p)
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{
/* Kilobytes */
p->ds_size = align_page(p->ds_size << 10);
p->rs_size = align_page(p->rs_size << 10);
/* Megabytes */
p->young_size <<= 20;
p->aging_size <<= 20;
p->tenured_size <<= 20;
p->code_size <<= 20;
/* Disable GC during init as a sanity check */
gc_off = true;
/* OS-specific initialization */
early_init();
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const vm_char *executable_path = vm_executable_path();
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if(executable_path)
p->executable_path = executable_path;
if(p->image_path == NULL)
p->image_path = default_image_path();
srand(current_micros());
init_ffi();
init_stacks(p->ds_size,p->rs_size);
load_image(p);
init_c_io();
init_inline_caching(p->max_pic_size);
init_signals();
if(p->console)
open_console();
init_profiler();
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userenv[CPU_ENV] = allot_alien(F,(cell)FACTOR_CPU_STRING);
userenv[OS_ENV] = allot_alien(F,(cell)FACTOR_OS_STRING);
userenv[cell_SIZE_ENV] = tag_fixnum(sizeof(cell));
userenv[EXECUTABLE_ENV] = allot_alien(F,(cell)p->executable_path);
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userenv[ARGS_ENV] = F;
userenv[EMBEDDED_ENV] = F;
/* We can GC now */
gc_off = false;
if(userenv[STAGE2_ENV] == F)
{
userenv[STACK_TRACES_ENV] = tag_boolean(p->stack_traces);
do_stage1_init();
}
}
/* May allocate memory */
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VM_C_API void pass_args_to_factor(int argc, vm_char **argv)
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{
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growable_array args;
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int i;
for(i = 1; i < argc; i++)
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args.add(allot_alien(F,(cell)argv[i]));
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args.trim();
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userenv[ARGS_ENV] = args.elements.value();
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}
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static void start_factor(vm_parameters *p)
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{
if(p->fep) factorbug();
nest_stacks();
c_to_factor_toplevel(userenv[BOOT_ENV]);
unnest_stacks();
}
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VM_C_API void start_embedded_factor(vm_parameters *p)
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{
userenv[EMBEDDED_ENV] = T;
start_factor(p);
}
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VM_C_API void start_standalone_factor(int argc, vm_char **argv)
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{
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vm_parameters p;
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default_parameters(&p);
init_parameters_from_args(&p,argc,argv);
init_factor(&p);
pass_args_to_factor(argc,argv);
start_factor(&p);
}
VM_C_API char *factor_eval_string(char *string)
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{
char *(*callback)(char *) = (char *(*)(char *))alien_offset(userenv[EVAL_CALLBACK_ENV]);
return callback(string);
}
VM_C_API void factor_eval_free(char *result)
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{
free(result);
}
VM_C_API void factor_yield(void)
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{
void (*callback)(void) = (void (*)(void))alien_offset(userenv[YIELD_CALLBACK_ENV]);
callback();
}
VM_C_API void factor_sleep(long us)
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{
void (*callback)(long) = (void (*)(long))alien_offset(userenv[SLEEP_CALLBACK_ENV]);
callback(us);
}
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}