static void duk__refcount_finalize_hobject(duk_hthread *thr, duk_hobject *h) {
duk_uint_fast32_t i;
DUK_ASSERT(h);
DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h) == DUK_HTYPE_OBJECT);
/* XXX: better to get base and walk forwards? */
for (i = 0; i < (duk_uint_fast32_t) h->e_next; i++) {
duk_hstring *key = DUK_HOBJECT_E_GET_KEY(h, i);
if (!key) {
continue;
}
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) key);
if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(h, i)) {
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_GETTER(h, i));
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_SETTER(h, i));
} else {
duk_heap_tval_decref(thr, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(h, i));
}
}
for (i = 0; i < (duk_uint_fast32_t) h->a_size; i++) {
duk_heap_tval_decref(thr, DUK_HOBJECT_A_GET_VALUE_PTR(h, i));
}
/* hash part is a 'weak reference' and does not contribute */
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) h->prototype);
if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
duk_tval *tv, *tv_end;
duk_hobject **funcs, **funcs_end;
DUK_ASSERT(f->data != NULL); /* compiled functions must be created 'atomically' */
tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(f);
tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(f);
while (tv < tv_end) {
duk_heap_tval_decref(thr, tv);
tv++;
}
funcs = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(f);
funcs_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(f);
while (funcs < funcs_end) {
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) *funcs);
funcs++;
}
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) f->data);
} else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
duk_hnativefunction *f = (duk_hnativefunction *) h;
DUK_UNREF(f);
/* nothing to finalize */
} else if (DUK_HOBJECT_IS_THREAD(h)) {
duk_hthread *t = (duk_hthread *) h;
duk_tval *tv;
tv = t->valstack;
while (tv < t->valstack_end) {
duk_heap_tval_decref(thr, tv);
tv++;
}
for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
duk_activation *act = t->callstack + i;
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) act->func);
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) act->var_env);
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) act->lex_env);
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) act->prev_caller);
#endif
}
#if 0 /* nothing now */
for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
duk_catcher *cat = t->catchstack + i;
}
#endif
for (i = 0; i < DUK_NUM_BUILTINS; i++) {
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) t->builtins[i]);
}
duk_heap_heaphdr_decref(thr, (duk_heaphdr *) t->resumer);
}
}
DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) {
duk_uint_fast32_t i;
DUK_DDD(DUK_DDDPRINT("duk__mark_hobject: %p", (void *) h));
DUK_ASSERT(h);
/* XXX: use advancing pointers instead of index macros -> faster and smaller? */
for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
duk_hstring *key = DUK_HOBJECT_E_GET_KEY(heap, h, i);
if (!key) {
continue;
}
duk__mark_heaphdr(heap, (duk_heaphdr *) key);
if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) {
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get);
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set);
} else {
duk__mark_tval(heap, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v);
}
}
for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
duk__mark_tval(heap, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i));
}
/* hash part is a 'weak reference' and does not contribute */
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h));
if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
duk_tval *tv, *tv_end;
duk_hobject **fn, **fn_end;
/* 'data' is reachable through every compiled function which
* contains a reference.
*/
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPILEDFUNCTION_GET_DATA(heap, f));
tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, f);
tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(heap, f);
while (tv < tv_end) {
duk__mark_tval(heap, tv);
tv++;
}
fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, f);
fn_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(heap, f);
while (fn < fn_end) {
duk__mark_heaphdr(heap, (duk_heaphdr *) *fn);
fn++;
}
} else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
duk_hnativefunction *f = (duk_hnativefunction *) h;
DUK_UNREF(f);
/* nothing to mark */
} else if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
duk_hbufferobject *b = (duk_hbufferobject *) h;
duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf);
} else if (DUK_HOBJECT_IS_THREAD(h)) {
duk_hthread *t = (duk_hthread *) h;
duk_tval *tv;
tv = t->valstack;
while (tv < t->valstack_top) {
duk__mark_tval(heap, tv);
tv++;
}
for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
duk_activation *act = t->callstack + i;
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_ACT_GET_FUNC(act));
duk__mark_heaphdr(heap, (duk_heaphdr *) act->var_env);
duk__mark_heaphdr(heap, (duk_heaphdr *) act->lex_env);
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
duk__mark_heaphdr(heap, (duk_heaphdr *) act->prev_caller);
#endif
}
#if 0 /* nothing now */
for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
duk_catcher *cat = t->catchstack + i;
}
#endif
duk__mark_heaphdr(heap, (duk_heaphdr *) t->resumer);
/* XXX: duk_small_uint_t would be enough for this loop */
for (i = 0; i < DUK_NUM_BUILTINS; i++) {
duk__mark_heaphdr(heap, (duk_heaphdr *) t->builtins[i]);
}
}
}
static void duk__mark_hobject(duk_heap *heap, duk_hobject *h) {
duk_uint_fast32_t i;
DUK_DDD(DUK_DDDPRINT("duk__mark_hobject: %p", (void *) h));
DUK_ASSERT(h);
/* XXX: use advancing pointers instead of index macros -> faster and smaller? */
for (i = 0; i < h->e_used; i++) {
duk_hstring *key = DUK_HOBJECT_E_GET_KEY(h, i);
if (!key) {
continue;
}
duk__mark_heaphdr(heap, (duk_heaphdr *) key);
if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(h, i)) {
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(h, i)->a.get);
duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(h, i)->a.set);
} else {
duk__mark_tval(heap, &DUK_HOBJECT_E_GET_VALUE_PTR(h, i)->v);
}
}
for (i = 0; i < h->a_size; i++) {
duk__mark_tval(heap, DUK_HOBJECT_A_GET_VALUE_PTR(h, i));
}
/* hash part is a 'weak reference' and does not contribute */
duk__mark_heaphdr(heap, (duk_heaphdr *) h->prototype);
if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
duk_tval *tv, *tv_end;
duk_hobject **funcs, **funcs_end;
/* 'data' is reachable through every compiled function which
* contains a reference.
*/
duk__mark_heaphdr(heap, (duk_heaphdr *) f->data);
tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(f);
tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(f);
while (tv < tv_end) {
duk__mark_tval(heap, tv);
tv++;
}
funcs = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(f);
funcs_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(f);
while (funcs < funcs_end) {
duk__mark_heaphdr(heap, (duk_heaphdr *) *funcs);
funcs++;
}
} else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
duk_hnativefunction *f = (duk_hnativefunction *) h;
DUK_UNREF(f);
/* nothing to mark */
} else if (DUK_HOBJECT_IS_THREAD(h)) {
duk_hthread *t = (duk_hthread *) h;
duk_tval *tv;
tv = t->valstack;
while (tv < t->valstack_end) {
duk__mark_tval(heap, tv);
tv++;
}
for (i = 0; i < t->callstack_top; i++) {
duk_activation *act = &t->callstack[i];
duk__mark_heaphdr(heap, (duk_heaphdr *) act->func);
duk__mark_heaphdr(heap, (duk_heaphdr *) act->var_env);
duk__mark_heaphdr(heap, (duk_heaphdr *) act->lex_env);
#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
duk__mark_heaphdr(heap, (duk_heaphdr *) act->prev_caller);
#endif
}
#if 0 /* nothing now */
for (i = 0; i < t->catchstack_top; i++) {
duk_catcher *cat = &t->catchstack[i];
}
#endif
duk__mark_heaphdr(heap, (duk_heaphdr *) t->resumer);
for (i = 0; i < DUK_NUM_BUILTINS; i++) {
duk__mark_heaphdr(heap, (duk_heaphdr *) t->builtins[i]);
}
}
}
static duk_uint8_t *duk__dump_func(duk_context *ctx, duk_hcompiledfunction *func, duk_bufwriter_ctx *bw_ctx, duk_uint8_t *p) {
duk_hthread *thr;
duk_tval *tv, *tv_end;
duk_instr_t *ins, *ins_end;
duk_hobject **fn, **fn_end;
duk_hstring *h_str;
duk_uint32_t count_instr;
duk_uint32_t tmp32;
duk_uint16_t tmp16;
duk_double_t d;
thr = (duk_hthread *) ctx;
DUK_UNREF(ctx);
DUK_UNREF(thr);
DUK_DD(DUK_DDPRINT("dumping function %p to %p: "
"consts=[%p,%p[ (%ld bytes, %ld items), "
"funcs=[%p,%p[ (%ld bytes, %ld items), "
"code=[%p,%p[ (%ld bytes, %ld items)",
(void *) func,
(void *) p,
(void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, func),
(void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_CONSTS_SIZE(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(thr->heap, func),
(void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, func),
(void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_SIZE(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, func),
(void *) DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, func),
(void *) DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE(thr->heap, func),
(long) DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(thr->heap, func)));
DUK_ASSERT(DUK_USE_ESBC_MAX_BYTES <= 0x7fffffffUL); /* ensures no overflow */
count_instr = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(thr->heap, func);
p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 3 * 4 + 2 * 2 + 3 * 4 + count_instr * 4, p);
/* Fixed header info. */
tmp32 = count_instr;
DUK_RAW_WRITE_U32_BE(p, tmp32);
tmp32 = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(thr->heap, func);
DUK_RAW_WRITE_U32_BE(p, tmp32);
tmp32 = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, func);
DUK_RAW_WRITE_U32_BE(p, tmp32);
tmp16 = func->nregs;
DUK_RAW_WRITE_U16_BE(p, tmp16);
tmp16 = func->nargs;
DUK_RAW_WRITE_U16_BE(p, tmp16);
#if defined(DUK_USE_DEBUGGER_SUPPORT)
tmp32 = func->start_line;
DUK_RAW_WRITE_U32_BE(p, tmp32);
tmp32 = func->end_line;
DUK_RAW_WRITE_U32_BE(p, tmp32);
#else
DUK_RAW_WRITE_U32_BE(p, 0);
DUK_RAW_WRITE_U32_BE(p, 0);
#endif
tmp32 = ((duk_heaphdr *) func)->h_flags & DUK_HEAPHDR_FLAGS_FLAG_MASK;
DUK_RAW_WRITE_U32_BE(p, tmp32);
/* Bytecode instructions: endian conversion needed unless
* platform is big endian.
*/
ins = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, func);
ins_end = DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, func);
DUK_ASSERT((duk_size_t) (ins_end - ins) == (duk_size_t) count_instr);
#if defined(DUK_USE_INTEGER_BE)
DUK_MEMCPY((void *) p, (const void *) ins, (size_t) (ins_end - ins));
p += (size_t) (ins_end - ins);
#else
while (ins != ins_end) {
tmp32 = (duk_uint32_t) (*ins);
DUK_RAW_WRITE_U32_BE(p, tmp32);
ins++;
}
#endif
/* Constants: variable size encoding. */
tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, func);
tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, func);
while (tv != tv_end) {
/* constants are strings or numbers now */
DUK_ASSERT(DUK_TVAL_IS_STRING(tv) ||
DUK_TVAL_IS_NUMBER(tv));
if (DUK_TVAL_IS_STRING(tv)) {
h_str = DUK_TVAL_GET_STRING(tv);
DUK_ASSERT(h_str != NULL);
DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1 + 4 + DUK_HSTRING_GET_BYTELEN(h_str), p),
*p++ = DUK__SER_STRING;
p = duk__dump_hstring_raw(p, h_str);
} else {
DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1 + 8, p);
*p++ = DUK__SER_NUMBER;
d = DUK_TVAL_GET_NUMBER(tv);
DUK_RAW_WRITE_DOUBLE_BE(p, d);
}
tv++;
}
/* Inner functions recursively. */
fn = (duk_hobject **) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, func);
fn_end = (duk_hobject **) DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, func);
while (fn != fn_end) {
/* XXX: This causes recursion up to inner function depth
* which is normally not an issue, e.g. mark-and-sweep uses
* a recursion limiter to avoid C stack issues. Avoiding
* this would mean some sort of a work list or just refusing
* to serialize deep functions.
*/
DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(*fn));
p = duk__dump_func(ctx, (duk_hcompiledfunction *) *fn, bw_ctx, p);
fn++;
}
/* Object extra properties.
*
* There are some difference between function templates and functions.
* For example, function templates don't have .length and nargs is
* normally used to instantiate the functions.
*/
p = duk__dump_uint32_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_LENGTH, (duk_uint32_t) func->nargs);
p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_NAME);
p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_FILE_NAME);
p = duk__dump_buffer_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_INT_PC2LINE);
p = duk__dump_varmap(thr, p, bw_ctx, (duk_hobject *) func);
p = duk__dump_formals(thr, p, bw_ctx, (duk_hobject *) func);
DUK_DD(DUK_DDPRINT("serialized function %p -> final pointer %p", (void *) func, (void *) p));
return p;
}