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vm.c
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vm.c
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/**********************************************************************
vm.c -
$Author$
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#ifndef VM_CHECK_MODE
#define VM_CHECK_MODE 0
#endif
#include "internal.h"
#include "ruby/vm.h"
#include "ruby/st.h"
#include "gc.h"
#include "vm_core.h"
#include "iseq.h"
#include "eval_intern.h"
#include "probes.h"
#include "probes_helper.h"
VALUE rb_str_concat_literals(size_t, const VALUE*);
PUREFUNC(static inline VALUE *VM_EP_LEP(VALUE *));
static inline VALUE *
VM_EP_LEP(VALUE *ep)
{
while (!VM_EP_LEP_P(ep)) {
ep = VM_EP_PREV_EP(ep);
}
return ep;
}
static inline rb_control_frame_t *
rb_vm_search_cf_from_ep(const rb_thread_t * const th, rb_control_frame_t *cfp, const VALUE * const ep)
{
if (!ep) {
return NULL;
}
else {
const rb_control_frame_t * const eocfp = RUBY_VM_END_CONTROL_FRAME(th); /* end of control frame pointer */
while (cfp < eocfp) {
if (cfp->ep == ep) {
return cfp;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
return NULL;
}
}
VALUE *
rb_vm_ep_local_ep(VALUE *ep)
{
return VM_EP_LEP(ep);
}
PUREFUNC(static inline VALUE *VM_CF_LEP(const rb_control_frame_t * const cfp));
static inline VALUE *
VM_CF_LEP(const rb_control_frame_t * const cfp)
{
return VM_EP_LEP(cfp->ep);
}
static inline VALUE *
VM_CF_PREV_EP(const rb_control_frame_t * const cfp)
{
return VM_EP_PREV_EP(cfp->ep);
}
PUREFUNC(static inline rb_block_t *VM_CF_BLOCK_PTR(const rb_control_frame_t * const cfp));
static inline rb_block_t *
VM_CF_BLOCK_PTR(const rb_control_frame_t * const cfp)
{
VALUE *ep = VM_CF_LEP(cfp);
return VM_EP_BLOCK_PTR(ep);
}
rb_block_t *
rb_vm_control_frame_block_ptr(const rb_control_frame_t *cfp)
{
return VM_CF_BLOCK_PTR(cfp);
}
static rb_cref_t *
vm_cref_new0(VALUE klass, rb_method_visibility_t visi, int module_func, rb_cref_t *prev_cref, int pushed_by_eval, int use_prev_prev)
{
VALUE refinements = Qnil;
int omod_shared = FALSE;
rb_cref_t *cref;
/* scope */
union {
rb_scope_visibility_t visi;
VALUE value;
} scope_visi;
scope_visi.visi.method_visi = visi;
scope_visi.visi.module_func = module_func;
/* refinements */
if (prev_cref != NULL && prev_cref != (void *)1 /* TODO: why CREF_NEXT(cref) is 1? */) {
refinements = CREF_REFINEMENTS(prev_cref);
if (!NIL_P(refinements)) {
omod_shared = TRUE;
CREF_OMOD_SHARED_SET(prev_cref);
}
}
cref = (rb_cref_t *)rb_imemo_new(imemo_cref, klass, (VALUE)(use_prev_prev ? CREF_NEXT(prev_cref) : prev_cref), scope_visi.value, refinements);
if (pushed_by_eval) CREF_PUSHED_BY_EVAL_SET(cref);
if (omod_shared) CREF_OMOD_SHARED_SET(cref);
return cref;
}
static rb_cref_t *
vm_cref_new(VALUE klass, rb_method_visibility_t visi, int module_func, rb_cref_t *prev_cref, int pushed_by_eval)
{
return vm_cref_new0(klass, visi, module_func, prev_cref, pushed_by_eval, FALSE);
}
static rb_cref_t *
vm_cref_new_use_prev(VALUE klass, rb_method_visibility_t visi, int module_func, rb_cref_t *prev_cref, int pushed_by_eval)
{
return vm_cref_new0(klass, visi, module_func, prev_cref, pushed_by_eval, TRUE);
}
static rb_cref_t *
vm_cref_dup(const rb_cref_t *cref)
{
VALUE klass = CREF_CLASS(cref);
const rb_scope_visibility_t *visi = CREF_SCOPE_VISI(cref);
rb_cref_t *next_cref = CREF_NEXT(cref), *new_cref;
int pushed_by_eval = CREF_PUSHED_BY_EVAL(cref);
new_cref = vm_cref_new(klass, visi->method_visi, visi->module_func, next_cref, pushed_by_eval);
if (!NIL_P(CREF_REFINEMENTS(cref))) {
CREF_REFINEMENTS_SET(new_cref, rb_hash_dup(CREF_REFINEMENTS(cref)));
CREF_OMOD_SHARED_UNSET(new_cref);
}
return new_cref;
}
static rb_cref_t *
vm_cref_new_toplevel(rb_thread_t *th)
{
rb_cref_t *cref = vm_cref_new(rb_cObject, METHOD_VISI_PRIVATE /* toplevel visibility is private */, FALSE, NULL, FALSE);
if (th->top_wrapper) {
cref = vm_cref_new(th->top_wrapper, METHOD_VISI_PRIVATE, FALSE, cref, FALSE);
}
return cref;
}
rb_cref_t *
rb_vm_cref_new_toplevel(void)
{
return vm_cref_new_toplevel(GET_THREAD());
}
static void
vm_cref_dump(const char *mesg, const rb_cref_t *cref)
{
fprintf(stderr, "vm_cref_dump: %s (%p)\n", mesg, cref);
while (cref) {
fprintf(stderr, "= cref| klass: %s\n", RSTRING_PTR(rb_class_path(CREF_CLASS(cref))));
cref = CREF_NEXT(cref);
}
}
#if VM_COLLECT_USAGE_DETAILS
static void vm_collect_usage_operand(int insn, int n, VALUE op);
static void vm_collect_usage_insn(int insn);
static void vm_collect_usage_register(int reg, int isset);
#endif
static VALUE vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
static VALUE
vm_invoke_bmethod(rb_thread_t *th, rb_proc_t *proc, VALUE self,
int argc, const VALUE *argv, const rb_block_t *blockptr);
static VALUE
vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self,
int argc, const VALUE *argv, const rb_block_t *blockptr);
static rb_serial_t ruby_vm_global_method_state = 1;
static rb_serial_t ruby_vm_global_constant_state = 1;
static rb_serial_t ruby_vm_class_serial = 1;
#include "vm_insnhelper.h"
#include "vm_insnhelper.c"
#include "vm_exec.h"
#include "vm_exec.c"
#include "vm_method.c"
#include "vm_eval.c"
#define PROCDEBUG 0
rb_serial_t
rb_next_class_serial(void)
{
return NEXT_CLASS_SERIAL();
}
VALUE rb_cRubyVM;
VALUE rb_cThread;
VALUE rb_cEnv;
VALUE rb_mRubyVMFrozenCore;
#define ruby_vm_redefined_flag GET_VM()->redefined_flag
VALUE ruby_vm_const_missing_count = 0;
rb_thread_t *ruby_current_thread = 0;
rb_vm_t *ruby_current_vm = 0;
rb_event_flag_t ruby_vm_event_flags;
static void thread_free(void *ptr);
void
rb_vm_inc_const_missing_count(void)
{
ruby_vm_const_missing_count +=1;
}
VALUE rb_class_path_no_cache(VALUE _klass);
int
ruby_th_dtrace_setup(rb_thread_t *th, VALUE klass, ID id,
struct ruby_dtrace_method_hook_args *args)
{
enum ruby_value_type type;
if (!klass) {
if (!th) th = GET_THREAD();
if (!rb_thread_method_id_and_class(th, &id, &klass) || !klass)
return FALSE;
}
if (RB_TYPE_P(klass, T_ICLASS)) {
klass = RBASIC(klass)->klass;
}
else if (FL_TEST(klass, FL_SINGLETON)) {
klass = rb_attr_get(klass, id__attached__);
if (NIL_P(klass)) return FALSE;
}
type = BUILTIN_TYPE(klass);
if (type == T_CLASS || type == T_ICLASS || type == T_MODULE) {
VALUE name = rb_class_path_no_cache(klass);
const char *classname, *filename;
const char *methodname = rb_id2name(id);
if (methodname && (filename = rb_source_loc(&args->line_no)) != 0) {
if (NIL_P(name) || !(classname = StringValuePtr(name)))
classname = "<unknown>";
args->classname = classname;
args->methodname = methodname;
args->filename = filename;
args->klass = klass;
args->name = name;
return TRUE;
}
}
return FALSE;
}
/*
* call-seq:
* RubyVM.stat -> Hash
* RubyVM.stat(hsh) -> hsh
* RubyVM.stat(Symbol) -> Numeric
*
* Returns a Hash containing implementation-dependent counters inside the VM.
*
* This hash includes information about method/constant cache serials:
*
* {
* :global_method_state=>251,
* :global_constant_state=>481,
* :class_serial=>9029
* }
*
* The contents of the hash are implementation specific and may be changed in
* the future.
*
* This method is only expected to work on C Ruby.
*/
static VALUE
vm_stat(int argc, VALUE *argv, VALUE self)
{
static VALUE sym_global_method_state, sym_global_constant_state, sym_class_serial;
VALUE arg = Qnil;
VALUE hash = Qnil, key = Qnil;
if (rb_scan_args(argc, argv, "01", &arg) == 1) {
if (SYMBOL_P(arg))
key = arg;
else if (RB_TYPE_P(arg, T_HASH))
hash = arg;
else
rb_raise(rb_eTypeError, "non-hash or symbol given");
}
else if (NIL_P(arg)) {
hash = rb_hash_new();
}
if (sym_global_method_state == 0) {
#define S(s) sym_##s = ID2SYM(rb_intern_const(#s))
S(global_method_state);
S(global_constant_state);
S(class_serial);
#undef S
}
#define SET(name, attr) \
if (key == sym_##name) \
return SERIALT2NUM(attr); \
else if (hash != Qnil) \
rb_hash_aset(hash, sym_##name, SERIALT2NUM(attr));
SET(global_method_state, ruby_vm_global_method_state);
SET(global_constant_state, ruby_vm_global_constant_state);
SET(class_serial, ruby_vm_class_serial);
#undef SET
if (!NIL_P(key)) { /* matched key should return above */
rb_raise(rb_eArgError, "unknown key: %"PRIsVALUE, rb_sym2str(key));
}
return hash;
}
/* control stack frame */
static void
vm_set_top_stack(rb_thread_t *th, const rb_iseq_t *iseq)
{
if (iseq->body->type != ISEQ_TYPE_TOP) {
rb_raise(rb_eTypeError, "Not a toplevel InstructionSequence");
}
/* for return */
vm_push_frame(th, iseq, VM_FRAME_MAGIC_TOP | VM_FRAME_FLAG_FINISH, th->top_self,
VM_ENVVAL_BLOCK_PTR(0),
(VALUE)vm_cref_new_toplevel(th), /* cref or me */
iseq->body->iseq_encoded, th->cfp->sp, iseq->body->local_size, iseq->body->stack_max);
}
static void
vm_set_eval_stack(rb_thread_t * th, const rb_iseq_t *iseq, const rb_cref_t *cref, rb_block_t *base_block)
{
vm_push_frame(th, iseq, VM_FRAME_MAGIC_EVAL | VM_FRAME_FLAG_FINISH,
base_block->self, VM_ENVVAL_PREV_EP_PTR(base_block->ep),
(VALUE)cref, /* cref or me */
iseq->body->iseq_encoded,
th->cfp->sp, iseq->body->local_size, iseq->body->stack_max);
}
static void
vm_set_main_stack(rb_thread_t *th, const rb_iseq_t *iseq)
{
VALUE toplevel_binding = rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING"));
rb_binding_t *bind;
rb_env_t *env;
GetBindingPtr(toplevel_binding, bind);
GetEnvPtr(bind->env, env);
vm_set_eval_stack(th, iseq, 0, &env->block);
/* save binding */
if (bind && iseq->body->local_size > 0) {
bind->env = vm_make_env_object(th, th->cfp);
}
}
rb_control_frame_t *
rb_vm_get_binding_creatable_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
{
while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
if (cfp->iseq) {
return (rb_control_frame_t *)cfp;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
return 0;
}
rb_control_frame_t *
rb_vm_get_ruby_level_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
{
while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
return (rb_control_frame_t *)cfp;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
return 0;
}
static rb_control_frame_t *
vm_get_ruby_level_caller_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
{
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
return (rb_control_frame_t *)cfp;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
return (rb_control_frame_t *)cfp;
}
if ((cfp->flag & VM_FRAME_FLAG_PASSED) == 0) {
break;
}
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
return 0;
}
void
rb_vm_pop_cfunc_frame(void)
{
rb_thread_t *th = GET_THREAD();
const rb_callable_method_entry_t *me = rb_vm_frame_method_entry(th->cfp);
EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, th->cfp->self, me->called_id, me->owner, Qnil);
RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, me->owner, me->called_id);
vm_pop_frame(th);
}
void
rb_vm_rewind_cfp(rb_thread_t *th, rb_control_frame_t *cfp)
{
/* check skipped frame */
while (th->cfp != cfp) {
#if VMDEBUG
printf("skipped frame: %s\n", vm_frametype_name(th->cfp));
#endif
if (VM_FRAME_TYPE(th->cfp) != VM_FRAME_MAGIC_CFUNC) {
vm_pop_frame(th);
}
else { /* unlikely path */
rb_vm_pop_cfunc_frame();
}
}
}
/* obsolete */
void
rb_frame_pop(void)
{
ONLY_FOR_INTERNAL_USE("rb_frame_pop()");
}
/* at exit */
void
ruby_vm_at_exit(void (*func)(rb_vm_t *))
{
rb_vm_t *vm = GET_VM();
rb_at_exit_list *nl = ALLOC(rb_at_exit_list);
nl->func = func;
nl->next = vm->at_exit;
vm->at_exit = nl;
}
static void
ruby_vm_run_at_exit_hooks(rb_vm_t *vm)
{
rb_at_exit_list *l = vm->at_exit;
while (l) {
rb_at_exit_list* t = l->next;
rb_vm_at_exit_func *func = l->func;
free(l);
l = t;
(*func)(vm);
}
}
/* Env */
/*
env{
env[0] // special (block or prev env)
env[1] // env object
};
*/
static void
env_mark(void * const ptr)
{
const rb_env_t * const env = ptr;
/* TODO: should mark more restricted range */
RUBY_GC_INFO("env->env\n");
rb_gc_mark_values((long)env->env_size, env->env);
RUBY_MARK_UNLESS_NULL(rb_vm_env_prev_envval(env));
RUBY_MARK_UNLESS_NULL(env->block.self);
RUBY_MARK_UNLESS_NULL(env->block.proc);
RUBY_MARK_UNLESS_NULL((VALUE)env->block.iseq);
RUBY_MARK_LEAVE("env");
}
static size_t
env_memsize(const void *ptr)
{
const rb_env_t * const env = ptr;
size_t size = sizeof(rb_env_t);
size += (env->env_size - 1) * sizeof(VALUE);
return size;
}
static const rb_data_type_t env_data_type = {
"VM/env",
{env_mark, RUBY_TYPED_DEFAULT_FREE, env_memsize,},
0, 0, RUBY_TYPED_FREE_IMMEDIATELY
};
#define VM_EP_IN_HEAP_P(th, ep) (!((th)->stack <= (ep) && (ep) < ((th)->stack + (th)->stack_size)))
#define VM_ENV_EP_ENVVAL(ep) ((ep)[1])
static VALUE check_env_value(VALUE envval);
static int
check_env(rb_env_t * const env)
{
fprintf(stderr, "---\n");
fprintf(stderr, "envptr: %p\n", (void *)&env->block.ep[0]);
fprintf(stderr, "envval: %10p ", (void *)env->block.ep[1]);
dp(env->block.ep[1]);
fprintf(stderr, "ep: %10p\n", (void *)env->block.ep);
if (rb_vm_env_prev_envval(env)) {
fprintf(stderr, ">>\n");
check_env_value(rb_vm_env_prev_envval(env));
fprintf(stderr, "<<\n");
}
return 1;
}
static VALUE
check_env_value(VALUE envval)
{
rb_env_t *env;
GetEnvPtr(envval, env);
if (check_env(env)) {
return envval;
}
rb_bug("invalid env");
return Qnil; /* unreachable */
}
/* return FALSE if proc was already created */
static int
vm_make_proc_from_block(rb_thread_t *th, rb_block_t *block, VALUE *procptr)
{
if (!block->proc) {
*procptr = block->proc = rb_vm_make_proc(th, block, rb_cProc);
return TRUE;
}
else if (SYMBOL_P(block->proc)) {
*procptr = rb_sym_to_proc(block->proc);
return TRUE;
}
else {
*procptr = block->proc;
return FALSE;
}
}
static VALUE
vm_make_env_each(rb_thread_t *const th, rb_control_frame_t *const cfp)
{
VALUE envval, blockprocval = 0;
VALUE * const ep = cfp->ep;
rb_env_t *env;
VALUE *new_ep;
int local_size, env_size;
if (VM_EP_IN_HEAP_P(th, ep)) {
return VM_ENV_EP_ENVVAL(ep);
}
if (!VM_EP_LEP_P(ep)) {
VALUE *prev_ep = VM_EP_PREV_EP(ep);
if (!VM_EP_IN_HEAP_P(th, prev_ep)) {
rb_control_frame_t *prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
while (prev_cfp->ep != prev_ep) {
prev_cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(prev_cfp);
if (VM_CHECK_MODE > 0 && prev_cfp->ep == 0) rb_bug("invalid ep");
}
vm_make_env_each(th, prev_cfp);
*ep = VM_ENVVAL_PREV_EP_PTR(prev_cfp->ep);
}
}
else {
rb_block_t *block = VM_EP_BLOCK_PTR(ep);
if (block && vm_make_proc_from_block(th, block, &blockprocval)) {
rb_proc_t *p;
GetProcPtr(blockprocval, p);
*ep = VM_ENVVAL_BLOCK_PTR(&p->block);
}
}
if (!RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
local_size = 1 /* cref/me */;
}
else {
local_size = cfp->iseq->body->local_size;
}
/*
* # local variables on a stack frame (N == local_size)
* [lvar1, lvar2, ..., lvarN, SPECVAL]
* ^
* ep[0]
*
* # moved local variables
* [lvar1, lvar2, ..., lvarN, SPECVAL, Envval, BlockProcval (if needed)]
* ^ ^
* env->env[0] ep[0]
*/
env_size = local_size +
1 /* specval */ +
1 /* envval */ +
(blockprocval ? 1 : 0) /* blockprocval */;
envval = TypedData_Wrap_Struct(rb_cEnv, &env_data_type, 0);
env = xmalloc(sizeof(rb_env_t) + (env_size - 1 /* rb_env_t::env[1] */) * sizeof(VALUE));
env->env_size = env_size;
MEMCPY(env->env, ep - local_size, VALUE, local_size + 1 /* specval */);
#if 0
for (i = 0; i < local_size; i++) {
if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
/* clear value stack for GC */
ep[-local_size + i] = 0;
}
}
#endif
/* be careful not to trigger GC after this */
RTYPEDDATA_DATA(envval) = env;
/*
* must happen after TypedData_Wrap_Struct to ensure penvval is markable
* in case object allocation triggers GC and clobbers penvval.
*/
*ep = envval; /* GC mark */
new_ep = &env->env[local_size];
new_ep[1] = envval;
if (blockprocval) new_ep[2] = blockprocval;
/* as Binding */
env->block.self = cfp->self;
env->block.ep = cfp->ep = new_ep;
env->block.iseq = cfp->iseq;
env->block.proc = 0;
if (!RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
/* TODO */
env->block.iseq = 0;
}
return envval;
}
static VALUE
vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp)
{
VALUE envval = vm_make_env_each(th, cfp);
if (PROCDEBUG) {
check_env_value(envval);
}
return envval;
}
void
rb_vm_stack_to_heap(rb_thread_t *th)
{
rb_control_frame_t *cfp = th->cfp;
while ((cfp = rb_vm_get_binding_creatable_next_cfp(th, cfp)) != 0) {
vm_make_env_object(th, cfp);
cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
}
}
VALUE
rb_vm_env_prev_envval(const rb_env_t *env)
{
const VALUE *ep = env->block.ep;
if (VM_EP_LEP_P(ep)) {
return Qfalse;
}
else {
return VM_ENV_EP_ENVVAL(VM_EP_PREV_EP(ep));
}
}
static int
collect_local_variables_in_iseq(const rb_iseq_t *iseq, const struct local_var_list *vars)
{
unsigned int i;
if (!iseq) return 0;
for (i = 0; i < iseq->body->local_table_size; i++) {
local_var_list_add(vars, iseq->body->local_table[i]);
}
return 1;
}
static void
collect_local_variables_in_env(const rb_env_t *env, const struct local_var_list *vars)
{
VALUE prev_envval;
while (collect_local_variables_in_iseq(env->block.iseq, vars), (prev_envval = rb_vm_env_prev_envval(env)) != Qfalse) {
GetEnvPtr(prev_envval, env);
}
}
static int
vm_collect_local_variables_in_heap(rb_thread_t *th, const VALUE *ep, const struct local_var_list *vars)
{
if (VM_EP_IN_HEAP_P(th, ep)) {
rb_env_t *env;
GetEnvPtr(VM_ENV_EP_ENVVAL(ep), env);
collect_local_variables_in_env(env, vars);
return 1;
}
else {
return 0;
}
}
VALUE
rb_vm_env_local_variables(const rb_env_t *env)
{
struct local_var_list vars;
local_var_list_init(&vars);
collect_local_variables_in_env(env, &vars);
return local_var_list_finish(&vars);
}
VALUE
rb_iseq_local_variables(const rb_iseq_t *iseq)
{
struct local_var_list vars;
local_var_list_init(&vars);
while (collect_local_variables_in_iseq(iseq, &vars)) {
iseq = iseq->body->parent_iseq;
}
return local_var_list_finish(&vars);
}
/* Proc */
static inline VALUE
rb_proc_create(VALUE klass, const rb_block_t *block,
int8_t safe_level, int8_t is_from_method, int8_t is_lambda)
{
VALUE procval = rb_proc_alloc(klass);
rb_proc_t *proc = RTYPEDDATA_DATA(procval);
proc->block = *block;
proc->block.proc = procval;
proc->safe_level = safe_level;
proc->is_from_method = is_from_method;
proc->is_lambda = is_lambda;
return procval;
}
VALUE
rb_vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass)
{
return rb_vm_make_proc_lambda(th, block, klass, 0);
}
VALUE
rb_vm_make_proc_lambda(rb_thread_t *th, const rb_block_t *block, VALUE klass, int8_t is_lambda)
{
VALUE procval;
rb_control_frame_t *cfp = RUBY_VM_GET_CFP_FROM_BLOCK_PTR(block);
if (block->proc) {
rb_bug("rb_vm_make_proc: Proc value is already created.");
}
vm_make_env_object(th, cfp);
procval = rb_proc_create(klass, block, (int8_t)th->safe_level, 0, is_lambda);
if (VMDEBUG) {
if (th->stack < block->ep && block->ep < th->stack + th->stack_size) {
rb_bug("invalid ptr: block->ep");
}
}
return procval;
}
VALUE
rb_vm_proc_envval(const rb_proc_t *proc)
{
VALUE envval = VM_ENV_EP_ENVVAL(proc->block.ep);
return envval;
}
/* Binding */
VALUE
rb_vm_make_binding(rb_thread_t *th, const rb_control_frame_t *src_cfp)
{
rb_control_frame_t *cfp = rb_vm_get_binding_creatable_next_cfp(th, src_cfp);
rb_control_frame_t *ruby_level_cfp = rb_vm_get_ruby_level_next_cfp(th, src_cfp);
VALUE bindval, envval;
rb_binding_t *bind;
if (cfp == 0 || ruby_level_cfp == 0) {
rb_raise(rb_eRuntimeError, "Can't create Binding Object on top of Fiber.");
}
while (1) {
envval = vm_make_env_object(th, cfp);
if (cfp == ruby_level_cfp) {
break;
}
cfp = rb_vm_get_binding_creatable_next_cfp(th, RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp));
}
bindval = rb_binding_alloc(rb_cBinding);
GetBindingPtr(bindval, bind);
bind->env = envval;
bind->path = ruby_level_cfp->iseq->body->location.path;
bind->first_lineno = rb_vm_get_sourceline(ruby_level_cfp);
return bindval;
}
VALUE *
rb_binding_add_dynavars(rb_binding_t *bind, int dyncount, const ID *dynvars)
{
VALUE envval = bind->env, path = bind->path;
rb_env_t *env;
rb_block_t *base_block;
rb_thread_t *th = GET_THREAD();
const rb_iseq_t *base_iseq, *iseq;
NODE *node = 0;
ID minibuf[4], *dyns = minibuf;
VALUE idtmp = 0;
if (dyncount < 0) return 0;
GetEnvPtr(envval, env);
base_block = &env->block;
base_iseq = base_block->iseq;
if (dyncount >= numberof(minibuf)) dyns = ALLOCV_N(ID, idtmp, dyncount + 1);
dyns[0] = dyncount;
MEMCPY(dyns + 1, dynvars, ID, dyncount);
node = NEW_NODE(NODE_SCOPE, dyns, 0, 0);
if (base_iseq) {
iseq = rb_iseq_new(node, base_iseq->body->location.label, path, path, base_iseq, ISEQ_TYPE_EVAL);
}
else {
VALUE tempstr = rb_fstring_cstr("<temp>");
iseq = rb_iseq_new_top(node, tempstr, tempstr, tempstr, NULL);
}
node->u1.tbl = 0; /* reset table */
ALLOCV_END(idtmp);
vm_set_eval_stack(th, iseq, 0, base_block);
bind->env = vm_make_env_object(th, th->cfp);
vm_pop_frame(th);
GetEnvPtr(bind->env, env);
return env->env;
}
/* C -> Ruby: block */
static inline VALUE
invoke_block(rb_thread_t *th, const rb_iseq_t *iseq, VALUE self, const rb_block_t *block, const rb_cref_t *cref, int type, int opt_pc)
{
int arg_size = iseq->body->param.size;
vm_push_frame(th, iseq, type | VM_FRAME_FLAG_FINISH, self,
VM_ENVVAL_PREV_EP_PTR(block->ep),
(VALUE)cref, /* cref or method */
iseq->body->iseq_encoded + opt_pc,
th->cfp->sp + arg_size, iseq->body->local_size - arg_size,
iseq->body->stack_max);
return vm_exec(th);
}
static VALUE
invoke_bmethod(rb_thread_t *th, const rb_iseq_t *iseq, VALUE self, const rb_block_t *block, int type, int opt_pc)
{
/* bmethod */
int arg_size = iseq->body->param.size;
const rb_callable_method_entry_t *me = th->passed_bmethod_me;
VALUE ret;
th->passed_bmethod_me = NULL;
vm_push_frame(th, iseq, type | VM_FRAME_FLAG_FINISH | VM_FRAME_FLAG_BMETHOD, self,
VM_ENVVAL_PREV_EP_PTR(block->ep),
(VALUE)me, /* cref or method (TODO: can we ignore cref?) */
iseq->body->iseq_encoded + opt_pc,
th->cfp->sp + arg_size, iseq->body->local_size - arg_size,
iseq->body->stack_max);
RUBY_DTRACE_METHOD_ENTRY_HOOK(th, me->owner, me->called_id);
EXEC_EVENT_HOOK(th, RUBY_EVENT_CALL, self, me->called_id, me->owner, Qnil);
ret = vm_exec(th);
EXEC_EVENT_HOOK(th, RUBY_EVENT_RETURN, self, me->called_id, me->owner, ret);
RUBY_DTRACE_METHOD_RETURN_HOOK(th, me->owner, me->called_id);
return ret;
}
static inline VALUE
invoke_block_from_c_0(rb_thread_t *th, const rb_block_t *block,
VALUE self, int argc, const VALUE *argv, const rb_block_t *blockptr,
const rb_cref_t *cref, const int splattable)
{
if (UNLIKELY(!RTEST(block->iseq))) {
return Qnil;
}
else if (LIKELY(RUBY_VM_NORMAL_ISEQ_P(block->iseq))) {
const rb_iseq_t *iseq = rb_iseq_check(block->iseq);
int i, opt_pc;
int type = block_proc_is_lambda(block->proc) ? VM_FRAME_MAGIC_LAMBDA : VM_FRAME_MAGIC_BLOCK;
VALUE *sp = th->cfp->sp;
for (i=0; i<argc; i++) {
sp[i] = argv[i];
}
opt_pc = vm_yield_setup_args(th, iseq, argc, sp, blockptr,
(type == VM_FRAME_MAGIC_LAMBDA ? (splattable ? arg_setup_lambda : arg_setup_method) : arg_setup_block));
if (th->passed_bmethod_me == NULL) {
return invoke_block(th, iseq, self, block, cref, type, opt_pc);
}
else {
return invoke_bmethod(th, iseq, self, block, type, opt_pc);
}
}
else {
return vm_yield_with_cfunc(th, block, self, argc, argv, blockptr);
}
}
static VALUE
invoke_block_from_c_splattable(rb_thread_t *th, const rb_block_t *block,
VALUE self, int argc, const VALUE *argv,
const rb_block_t *blockptr, const rb_cref_t *cref)
{
return invoke_block_from_c_0(th, block, self, argc, argv, blockptr, cref, TRUE);
}
static VALUE
invoke_block_from_c_unsplattable(rb_thread_t *th, const rb_block_t *block,
VALUE self, int argc, const VALUE *argv,
const rb_block_t *blockptr, const rb_cref_t *cref)
{
return invoke_block_from_c_0(th, block, self, argc, argv, blockptr, cref, FALSE);
}