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ruby--ruby/yarvcore.c
ko1 9315740101 * cont.c (rb_fiber_s_new): revert initializing VM stack. 
* yarvcore.c (th_init2): ditto.
* vm.c, vm.h: fix to stop using Qundef on VM stack.  According to
  this change, VM stack should not include Qundef value.
* insns.def (putundef): removed.
* compile.c (iseq_compile_each): ditto.
* eval.c (eval): fix spacing.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12621 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2007-06-26 06:14:44 +00:00

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/**********************************************************************
yarvcore.h -
$Author$
$Date$
created at: 04/01/01 01:17:22 JST
Copyright (C) 2004-2006 Koichi Sasada
**********************************************************************/
#include "ruby/ruby.h"
#include "ruby/node.h"
#include "yarvcore.h"
#include "gc.h"
VALUE rb_cVM;
VALUE rb_cThread;
VALUE symIFUNC;
VALUE symCFUNC;
ID idPLUS;
ID idMINUS;
ID idMULT;
ID idDIV;
ID idMOD;
ID idLT;
ID idLTLT;
ID idLE;
ID idGT;
ID idGE;
ID idEq;
ID idEqq;
ID idBackquote;
ID idEqTilde;
ID idThrowState;
ID idAREF;
ID idASET;
ID idIntern;
ID idMethodMissing;
ID idLength;
ID idLambda;
ID idGets;
ID idSucc;
ID idEach;
ID idRangeEachLT;
ID idRangeEachLE;
ID idArrayEach;
ID idTimes;
ID idEnd;
ID idBitblt;
ID idAnswer;
ID idSvarPlaceholder;
ID idSend;
ID id__send__;
ID id__send;
ID idFuncall;
ID id__send_bang;
/* from Ruby 1.9 eval.c */
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#define va_init_list(a,b) va_start(a,b)
#else
#include <varargs.h>
#define va_init_list(a,b) va_start(a)
#endif
/************/
/* YARVCore */
/************/
rb_thread_t *ruby_current_thread = 0;
rb_vm_t *ruby_current_vm = 0;
RUBY_EXTERN int ruby_nerrs;
static NODE *
compile_string(VALUE str, VALUE file, VALUE line)
{
NODE *node;
node = rb_compile_string(StringValueCStr(file), str, NUM2INT(line));
if (ruby_nerrs > 0) {
ruby_nerrs = 0;
rb_exc_raise(GET_THREAD()->errinfo); /* TODO: check err */
}
return node;
}
static VALUE
yarvcore_eval_iseq(VALUE iseq)
{
return rb_thread_eval(GET_THREAD(), iseq);
}
static VALUE
vm_compile_from_node(rb_thread_t *th, NODE * node, VALUE file)
{
VALUE iseq;
if (th->base_block) {
iseq = rb_iseq_new(node,
th->base_block->iseq->name,
file,
th->base_block->iseq->self,
ISEQ_TYPE_EVAL);
}
else {
iseq = rb_iseq_new(node, rb_str_new2("<main>"), file,
Qfalse, ISEQ_TYPE_TOP);
}
return iseq;
}
VALUE
vm_compile(rb_thread_t *th, VALUE str, VALUE file, VALUE line)
{
NODE *node = (NODE *) compile_string(str, file, line);
return vm_compile_from_node(th, (NODE *) node, file);
}
VALUE
yarvcore_eval_parsed(NODE *node, VALUE file)
{
VALUE iseq = vm_compile_from_node(GET_THREAD(), node, file);
return yarvcore_eval_iseq(iseq);
}
VALUE
yarvcore_eval(VALUE self, VALUE str, VALUE file, VALUE line)
{
NODE *node;
node = compile_string(str, file, line);
return yarvcore_eval_parsed(node, file);
}
/******/
/* VM */
/******/
void native_thread_cleanup(void *);
static void
vm_free(void *ptr)
{
RUBY_FREE_ENTER("vm");
if (ptr) {
rb_vm_t *vmobj = ptr;
st_free_table(vmobj->living_threads);
/* TODO: MultiVM Instance */
/* VM object should not be cleaned by GC */
/* ruby_xfree(ptr); */
/* ruby_current_vm = 0; */
}
RUBY_FREE_LEAVE("vm");
}
static int
vm_mark_each_thread_func(st_data_t key, st_data_t value, st_data_t dummy)
{
VALUE thval = (VALUE)key;
rb_gc_mark(thval);
return ST_CONTINUE;
}
static void
mark_event_hooks(rb_event_hook_t *hook)
{
while (hook) {
rb_gc_mark(hook->data);
hook = hook->next;
}
}
static void
vm_mark(void *ptr)
{
RUBY_MARK_ENTER("vm");
RUBY_GC_INFO("-------------------------------------------------\n");
if (ptr) {
rb_vm_t *vm = ptr;
if (vm->living_threads) {
st_foreach(vm->living_threads, vm_mark_each_thread_func, 0);
}
RUBY_MARK_UNLESS_NULL(vm->thgroup_default);
RUBY_MARK_UNLESS_NULL(vm->mark_object_ary);
RUBY_MARK_UNLESS_NULL(vm->last_status);
RUBY_MARK_UNLESS_NULL(vm->loaded_features);
if (vm->loading_table) {
rb_mark_tbl(vm->loading_table);
}
mark_event_hooks(vm->event_hooks);
}
RUBY_MARK_LEAVE("vm");
}
void
rb_vm_mark(void *ptr)
{
vm_mark(ptr);
}
static void
vm_init2(rb_vm_t *vm)
{
MEMZERO(vm, rb_vm_t, 1);
}
/**********/
/* Thread */
/**********/
static void
thread_free(void *ptr)
{
rb_thread_t *th;
RUBY_FREE_ENTER("thread");
if (ptr) {
th = ptr;
if (!th->root_fiber) {
RUBY_FREE_UNLESS_NULL(th->stack);
}
if (th->local_storage) {
st_free_table(th->local_storage);
}
#if USE_VALUE_CACHE
{
VALUE *ptr = th->value_cache_ptr;
while (*ptr) {
VALUE v = *ptr;
RBASIC(v)->flags = 0;
RBASIC(v)->klass = 0;
ptr++;
}
}
#endif
if (th->vm->main_thread == th) {
RUBY_GC_INFO("main thread\n");
}
else {
ruby_xfree(ptr);
}
}
RUBY_FREE_LEAVE("thread");
}
void yarv_machine_stack_mark(rb_thread_t *th);
void
rb_thread_mark(void *ptr)
{
rb_thread_t *th = NULL;
RUBY_MARK_ENTER("thread");
if (ptr) {
th = ptr;
if (th->stack) {
VALUE *p = th->stack;
VALUE *sp = th->cfp->sp + th->mark_stack_len;
rb_control_frame_t *cfp = th->cfp;
rb_control_frame_t *limit_cfp =
(void *)(th->stack + th->stack_size);
while (p < sp) {
rb_gc_mark(*p++);
}
while (cfp != limit_cfp) {
rb_gc_mark(cfp->proc);
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
}
/* mark ruby objects */
RUBY_MARK_UNLESS_NULL(th->first_proc);
RUBY_MARK_UNLESS_NULL(th->first_args);
RUBY_MARK_UNLESS_NULL(th->thgroup);
RUBY_MARK_UNLESS_NULL(th->value);
RUBY_MARK_UNLESS_NULL(th->errinfo);
RUBY_MARK_UNLESS_NULL(th->thrown_errinfo);
RUBY_MARK_UNLESS_NULL(th->local_svar);
RUBY_MARK_UNLESS_NULL(th->top_self);
RUBY_MARK_UNLESS_NULL(th->top_wrapper);
RUBY_MARK_UNLESS_NULL(th->fiber);
RUBY_MARK_UNLESS_NULL(th->root_fiber);
rb_mark_tbl(th->local_storage);
if (GET_THREAD() != th && th->machine_stack_start && th->machine_stack_end) {
yarv_machine_stack_mark(th);
rb_gc_mark_locations((VALUE *)&th->machine_regs,
(VALUE *)(&th->machine_regs) +
sizeof(th->machine_regs) / sizeof(VALUE));
}
mark_event_hooks(th->event_hooks);
}
RUBY_MARK_UNLESS_NULL(th->stat_insn_usage);
RUBY_MARK_LEAVE("thread");
}
static VALUE
thread_alloc(VALUE klass)
{
VALUE volatile obj;
rb_thread_t *th;
obj = Data_Make_Struct(klass, rb_thread_t,
rb_thread_mark, thread_free, th);
return obj;
}
static void
th_init2(rb_thread_t *th)
{
MEMZERO(th, rb_thread_t, 1);
/* allocate thread stack */
th->stack_size = RUBY_VM_THREAD_STACK_SIZE;
th->stack = ALLOC_N(VALUE, th->stack_size);
th->cfp = (void *)(th->stack + th->stack_size);
th->cfp--;
th->cfp->pc = 0;
th->cfp->sp = th->stack + 1;
th->cfp->bp = 0;
th->cfp->lfp = th->stack;
*th->cfp->lfp = 0;
th->cfp->dfp = th->stack;
th->cfp->self = Qnil;
th->cfp->magic = 0;
th->cfp->iseq = 0;
th->cfp->proc = 0;
th->cfp->block_iseq = 0;
th->status = THREAD_RUNNABLE;
th->errinfo = Qnil;
#if USE_VALUE_CACHE
th->value_cache_ptr = &th->value_cache[0];
#endif
}
static void
th_init(rb_thread_t *th)
{
th_init2(th);
}
extern VALUE ruby_top_self;
static VALUE
ruby_thread_init(VALUE self)
{
rb_thread_t *th;
rb_vm_t *vm = GET_THREAD()->vm;
GetThreadPtr(self, th);
th_init(th);
th->self = self;
th->vm = vm;
th->top_wrapper = 0;
th->top_self = ruby_top_self;
return self;
}
VALUE
rb_thread_alloc(VALUE klass)
{
VALUE self = thread_alloc(klass);
ruby_thread_init(self);
return self;
}
/********************************************************************/
VALUE insns_name_array(void);
extern VALUE *rb_gc_stack_start;
#ifdef __ia64
extern VALUE *rb_gc_register_stack_start;
#endif
static VALUE
sdr(void)
{
yarv_bug();
return Qnil;
}
static VALUE
nsdr(void)
{
VALUE ary = rb_ary_new();
#if HAVE_BACKTRACE
#include <execinfo.h>
#define MAX_NATIVE_TRACE 1024
static void *trace[MAX_NATIVE_TRACE];
int n = backtrace(trace, MAX_NATIVE_TRACE);
char **syms = backtrace_symbols(trace, n);
int i;
if (syms == 0) {
rb_memerror();
}
for (i=0; i<n; i++) {
rb_ary_push(ary, rb_str_new2(syms[i]));
}
free(syms);
#endif
return ary;
}
static char *yarv_options = ""
#if OPT_DIRECT_THREADED_CODE
"[direct threaded code] "
#elif OPT_TOKEN_THREADED_CODE
"[token threaded code] "
#elif OPT_CALL_THREADED_CODE
"[call threaded code] "
#endif
#if OPT_BASIC_OPERATIONS
"[optimize basic operation] "
#endif
#if OPT_STACK_CACHING
"[stack caching] "
#endif
#if OPT_OPERANDS_UNIFICATION
"[operands unification] "
#endif
#if OPT_INSTRUCTIONS_UNIFICATION
"[instructions unification] "
#endif
#if OPT_INLINE_METHOD_CACHE
"[inline method cache] "
#endif
#if OPT_BLOCKINLINING
"[block inlining] "
#endif
;
void yarv_init_redefined_flag(void);
void
Init_VM(void)
{
/* ::VM */
rb_cVM = rb_define_class("VM", rb_cObject);
rb_undef_alloc_func(rb_cVM);
/* Env */
rb_cEnv = rb_define_class_under(rb_cVM, "Env", rb_cObject);
rb_undef_alloc_func(rb_cEnv);
/* ::Thread */
rb_cThread = rb_define_class("Thread", rb_cObject);
rb_undef_alloc_func(rb_cThread);
rb_define_method(rb_cThread, "initialize", ruby_thread_init, 0);
/* ::VM::USAGE_ANALISYS_* */
rb_define_const(rb_cVM, "USAGE_ANALISYS_INSN", rb_hash_new());
rb_define_const(rb_cVM, "USAGE_ANALISYS_REGS", rb_hash_new());
rb_define_const(rb_cVM, "USAGE_ANALISYS_INSN_BIGRAM", rb_hash_new());
rb_define_const(rb_cVM, "OPTS", rb_str_new2(yarv_options));
/* ::VM::InsnNameArray */
rb_define_const(rb_cVM, "InsnNameArray", insns_name_array());
/* ::VM::eval() */
rb_define_singleton_method(rb_cVM, "eval", yarvcore_eval, 3);
/* debug functions ::VM::SDR(), ::VM::NSDR() */
rb_define_singleton_method(rb_cVM, "SDR", sdr, 0);
rb_define_singleton_method(rb_cVM, "NSDR", nsdr, 0);
/* Symbols */
symIFUNC = ID2SYM(rb_intern("<IFUNC>"));
symCFUNC = ID2SYM(rb_intern("<CFUNC>"));
/* IDs */
idPLUS = rb_intern("+");
idMINUS = rb_intern("-");
idMULT = rb_intern("*");
idDIV = rb_intern("/");
idMOD = rb_intern("%");
idLT = rb_intern("<");
idLTLT = rb_intern("<<");
idLE = rb_intern("<=");
idGT = rb_intern(">");
idGE = rb_intern(">=");
idEq = rb_intern("==");
idEqq = rb_intern("===");
idBackquote = rb_intern("`");
idEqTilde = rb_intern("=~");
idAREF = rb_intern("[]");
idASET = rb_intern("[]=");
idEach = rb_intern("each");
idTimes = rb_intern("times");
idLength = rb_intern("length");
idLambda = rb_intern("lambda");
idIntern = rb_intern("intern");
idGets = rb_intern("gets");
idSucc = rb_intern("succ");
idEnd = rb_intern("end");
idRangeEachLT = rb_intern("Range#each#LT");
idRangeEachLE = rb_intern("Range#each#LE");
idArrayEach = rb_intern("Array#each");
idMethodMissing = rb_intern("method_missing");
idThrowState = rb_intern("#__ThrowState__");
idBitblt = rb_intern("bitblt");
idAnswer = rb_intern("the_answer_to_life_the_universe_and_everything");
idSvarPlaceholder = rb_intern("#svar");
idSend = rb_intern("send");
id__send__ = rb_intern("__send__");
id__send = rb_intern("__send");
idFuncall = rb_intern("funcall");
id__send_bang = rb_intern("__send!");
/* VM bootstrap: phase 2 */
{
rb_vm_t *vm = ruby_current_vm;
rb_thread_t *th = GET_THREAD();
volatile VALUE th_self;
/* create vm object */
vm->self = Data_Wrap_Struct(rb_cVM, vm_mark, vm_free, vm);
/* create main thread */
th_self = th->self = Data_Wrap_Struct(rb_cThread, rb_thread_mark,
thread_free, th);
vm->main_thread = th;
vm->running_thread = th;
th->vm = vm;
th->top_wrapper = 0;
th->top_self = ruby_top_self;
rb_thread_set_current(th);
vm->living_threads = st_init_numtable();
st_insert(vm->living_threads, th_self, (st_data_t) th->thread_id);
}
yarv_init_redefined_flag();
}
void
Init_yarv(void)
{
/* VM bootstrap: phase 1 */
rb_vm_t *vm = ALLOC(rb_vm_t);
rb_thread_t *th = ALLOC(rb_thread_t);
vm_init2(vm);
ruby_current_vm = vm;
th_init2(th);
th->vm = vm;
th->machine_stack_start = rb_gc_stack_start;
#ifdef __ia64
th->machine_register_stack_start = rb_gc_register_stack_start;
#endif
rb_thread_set_current_raw(th);
}
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