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-rw-r--r--erts/emulator/beam/erl_alloc.types4
-rw-r--r--erts/emulator/beam/external.c219
2 files changed, 106 insertions, 117 deletions
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index 32308fae9b..b4e52770e3 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -1,7 +1,7 @@
#
# %CopyrightBegin%
#
-# Copyright Ericsson AB 2003-2013. All Rights Reserved.
+# Copyright Ericsson AB 2003-2014. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
@@ -150,7 +150,7 @@ type LINK_LH STANDARD PROCESSES link_lh
type SUSPEND_MON STANDARD PROCESSES suspend_monitor
type PEND_SUSPEND SHORT_LIVED PROCESSES pending_suspend
type PROC_LIST SHORT_LIVED PROCESSES proc_list
-type EXTRA_ROOT SHORT_LIVED PROCESSES extra_root
+type SAVED_ESTACK SHORT_LIVED PROCESSES saved_estack
type FUN_ENTRY LONG_LIVED CODE fun_entry
type ATOM_TXT LONG_LIVED ATOM atom_text
type BEAM_REGISTER EHEAP PROCESSES beam_register
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index 2cb44a5b64..50831e848e 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 1996-2013. All Rights Reserved.
+ * Copyright Ericsson AB 1996-2014. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
@@ -87,7 +87,8 @@
static Export term_to_binary_trap_export;
static byte* enc_term(ErtsAtomCacheMap *, Eterm, byte*, Uint32, struct erl_off_heap_header** off_heap);
-static int enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
+struct TTBEncodeContext_;
+static int enc_term_int(struct TTBEncodeContext_*,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
struct erl_off_heap_header** off_heap, Sint *reds, byte **res);
static Uint is_external_string(Eterm obj, int* p_is_string);
static byte* enc_atom(ErtsAtomCacheMap *, Eterm, byte*, Uint32);
@@ -103,7 +104,8 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
Binary *context_b);
static Uint encode_size_struct2(ErtsAtomCacheMap *, Eterm, unsigned);
-static int encode_size_struct_int(Process *p, ErtsAtomCacheMap *acmp, Eterm obj,
+struct TTBSizeContext_;
+static int encode_size_struct_int(struct TTBSizeContext_*, ErtsAtomCacheMap *acmp, Eterm obj,
unsigned dflags, Sint *reds, Uint *res);
static Export binary_to_term_trap_export;
@@ -1086,7 +1088,6 @@ BIF_RETTYPE term_to_binary_2(BIF_ALIST_2)
int level = 0;
Uint flags = TERM_TO_BINARY_DFLAGS;
Eterm res;
- Binary *bin = NULL;
while (is_list(Flags)) {
Eterm arg = CAR(list_val(Flags));
@@ -1123,7 +1124,7 @@ BIF_RETTYPE term_to_binary_2(BIF_ALIST_2)
goto error;
}
- res = erts_term_to_binary_int(p, Term, level, flags, bin);
+ res = erts_term_to_binary_int(p, Term, level, flags, NULL);
if (is_tuple(res)) {
erts_set_gc_state(p, 0);
BIF_TRAP1(&term_to_binary_trap_export,BIF_P,res);
@@ -1726,14 +1727,22 @@ erts_term_to_binary(Process* p, Eterm Term, int level, Uint flags) {
typedef enum { TTBSize, TTBEncode, TTBCompress } TTBState;
-typedef struct {
+typedef struct TTBSizeContext_ {
Uint flags;
int level;
+ Uint result;
+ Eterm obj;
+ UWord* stack;
+ Uint stack_sz;
} TTBSizeContext;
-typedef struct {
+typedef struct TTBEncodeContext_ {
Uint flags;
int level;
+ byte* ep;
+ Eterm obj;
+ UWord* stack;
+ Uint stack_sz;
Binary *result_bin;
} TTBEncodeContext;
@@ -1763,8 +1772,16 @@ static void ttb_context_destructor(Binary *context_bin)
context->alive = 0;
switch (context->state) {
case TTBSize:
+ if (context->s.sc.stack) {
+ erts_free(ERTS_ALC_T_SAVED_ESTACK, context->s.sc.stack);
+ context->s.sc.stack = NULL;
+ }
break;
case TTBEncode:
+ if (context->s.ec.stack) {
+ erts_free(ERTS_ALC_T_SAVED_ESTACK, context->s.ec.stack);
+ context->s.ec.stack = NULL;
+ }
if (context->s.ec.result_bin != NULL) { /* Set to NULL if ever made alive! */
ASSERT(erts_refc_read(&(context->s.ec.result_bin->refc),0) == 0);
erts_bin_free(context->s.ec.result_bin);
@@ -1829,6 +1846,7 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
/* Setup enough to get started */
context->state = TTBSize;
context->alive = 1;
+ context->s.sc.stack = NULL;
context->s.sc.flags = flags;
context->s.sc.level = level;
} else {
@@ -1844,7 +1862,8 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
int level;
Uint flags;
/* Try for fast path */
- if (encode_size_struct_int(p, NULL, Term, context->s.sc.flags, &reds, &size) < 0) {
+ if (encode_size_struct_int(&context->s.sc, NULL, Term,
+ context->s.sc.flags, &reds, &size) < 0) {
EXPORT_CONTEXT();
/* Same state */
RETURN_STATE();
@@ -1870,6 +1889,7 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
context->state = TTBEncode;
context->s.ec.flags = flags;
context->s.ec.level = level;
+ context->s.ec.stack = NULL;
context->s.ec.result_bin = result_bin;
break;
}
@@ -1881,7 +1901,7 @@ static Eterm erts_term_to_binary_int(Process* p, Eterm Term, int level, Uint fla
Binary *result_bin;
flags = context->s.ec.flags;
- if (enc_term_int(p,NULL,Term, bytes+1, flags, NULL, &reds, &endp) < 0) {
+ if (enc_term_int(&context->s.ec, NULL,Term, bytes+1, flags, NULL, &reds, &endp) < 0) {
EXPORT_CONTEXT();
RETURN_STATE();
}
@@ -2289,27 +2309,6 @@ dec_pid(ErtsDistExternal *edep, Eterm** hpp, byte* ep, ErlOffHeap* off_heap, Ete
#define ENC_PATCH_FUN_SIZE ((Eterm) 2)
#define ENC_LAST_ARRAY_ELEMENT ((Eterm) 3)
-/* Free extra rootset (used when trapping) */
-static void cleanup_ttb_extra_root(ErlExtraRootSet *rs)
-{
- if (rs->objv != NULL) {
- erts_free(ERTS_ALC_T_EXTRA_ROOT, rs->objv);
- }
- erts_free(ERTS_ALC_T_EXTRA_ROOT, rs);
-}
-
-/* Same as above, but we have an extra "stack" beyond GC reach, i.e. an array of two extra roots */
-static void cleanup_ttb_extra_root_2(ErlExtraRootSet *rs)
-{
- if (rs->objv != NULL) {
- erts_free(ERTS_ALC_T_EXTRA_ROOT, rs->objv);
- }
- if (rs[1].objv != NULL) {
- erts_free(ERTS_ALC_T_EXTRA_ROOT, rs[1].objv);
- }
-
- erts_free(ERTS_ALC_T_EXTRA_ROOT, rs);
-}
static byte*
enc_term(ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
@@ -2321,39 +2320,43 @@ enc_term(ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
}
static int
-enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
+enc_term_int(TTBEncodeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dflags,
struct erl_off_heap_header** off_heap, Sint *reds, byte **res)
{
- DECLARE_ESTACK(s);
- DECLARE_WSTACK(com);
+ DECLARE_WSTACK(s);
Uint n;
Uint i;
Uint j;
Uint* ptr;
Eterm val;
FloatDef f;
- int count_reds = (p != NULL && reds != NULL);
Sint r = 0;
+#if HALFWORD_HEAP
+ UWord wobj;
+#endif
- if (count_reds) {
- ESTACK_CHANGE_ALLOCATOR(s, ERTS_ALC_T_EXTRA_ROOT);
- WSTACK_CHANGE_ALLOCATOR(com, ERTS_ALC_T_EXTRA_ROOT);
+
+ if (ctx) {
+ WSTACK_CHANGE_ALLOCATOR(s, ERTS_ALC_T_SAVED_ESTACK);
r = *reds;
- }
- if (p && p->extra_root) { /* restore saved stacks and byte pointer */
- ESTACK_RESTORE(s,p->extra_root[0].objv, p->extra_root[0].sz);
- obj = ESTACK_POP(s);
- WSTACK_RESTORE(com, p->extra_root[1].objv, p->extra_root[1].sz);
- ep = (byte *) WSTACK_POP(com);
+ if (ctx->stack) { /* restore saved stacks and byte pointer */
+ WSTACK_RESTORE(s, ctx->stack, ctx->stack_sz);
+ ep = ctx->ep;
+ obj = ctx->obj;
+ }
}
goto L_jump_start;
outer_loop:
- while (!ESTACK_ISEMPTY(s)) {
- obj = ESTACK_POP(s);
- switch (val = WSTACK_POP(com)) {
+ while (!WSTACK_ISEMPTY(s)) {
+#if HALFWORD_HEAP
+ obj = (Eterm) (wobj = WSTACK_POP(s));
+#else
+ obj = WSTACK_POP(s);
+#endif
+ switch (val = WSTACK_POP(s)) {
case ENC_TERM:
break;
case ENC_ONE_CONS:
@@ -2364,55 +2367,52 @@ enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dfla
obj = CAR(cons);
tl = CDR(cons);
- WSTACK_PUSH(com, is_list(tl) ? ENC_ONE_CONS : ENC_TERM);
- ESTACK_PUSH(s, tl);
+ WSTACK_PUSH(s, is_list(tl) ? ENC_ONE_CONS : ENC_TERM);
+ WSTACK_PUSH(s, tl);
}
break;
case ENC_PATCH_FUN_SIZE:
- /* obj will be discarded, it was NIL */
{
- byte* size_p = (byte *) WSTACK_POP(com);
+#if HALFWORD_HEAP
+ byte* size_p = (byte *) wobj;
+#else
+ byte* size_p = (byte *) obj;
+#endif
put_int32(ep - size_p, size_p);
}
goto outer_loop;
case ENC_LAST_ARRAY_ELEMENT:
/* obj is the tuple */
{
- Eterm* ptr = tuple_val(obj);
- i = arityval(*ptr);
- obj = ptr[i];
+#if HALFWORD_HEAP
+ Eterm* ptr = (Eterm *) wobj;
+#else
+ Eterm* ptr = (Eterm *) obj;
+#endif
+ obj = *ptr;
}
break;
default: /* ENC_LAST_ARRAY_ELEMENT+1 and upwards */
{
- Eterm* ptr = tuple_val(obj);
- i = arityval(*ptr);
- ESTACK_PUSH(s, obj); /* put back tuple and next element index */
- WSTACK_PUSH(com, val-1);
- obj = ptr[i - (val - ENC_LAST_ARRAY_ELEMENT)]; /* the index is counting down */
+#if HALFWORD_HEAP
+ Eterm* ptr = (Eterm *) wobj;
+#else
+ Eterm* ptr = (Eterm *) obj;
+#endif
+ WSTACK_PUSH(s, val-1);
+ obj = *ptr++;
+ WSTACK_PUSH(s, (UWord)ptr);
}
break;
}
L_jump_start:
- if (count_reds && --r == 0) {
+ if (ctx && --r == 0) {
*reds = r;
- ESTACK_PUSH(s,obj); /* push back current object, to be popped on restore */
- WSTACK_PUSH(com,((UWord) ep));
- if (p->extra_root == NULL) {
- /* NB. Allocate an array of two "extra-roots", of which only the first element
- is seen and handled by the GC. Index 1 holds the Wstack. */
- p->extra_root = erts_alloc(ERTS_ALC_T_EXTRA_ROOT, sizeof(ErlExtraRootSet)*2);
- p->extra_root->objv = NULL;
- p->extra_root->sz = 0;
- p->extra_root->cleanup = cleanup_ttb_extra_root_2;
- p->extra_root[1].objv = NULL;
- p->extra_root[1].sz = 0;
- p->extra_root[1].cleanup = NULL; /* Never used */
- }
- ESTACK_SAVE(s, p->extra_root[0].objv, p->extra_root[0].sz);
- WSTACK_SAVE(com, p->extra_root[1].objv, (p->extra_root[1].sz));
+ ctx->obj = obj;
+ ctx->ep = ep;
+ WSTACK_SAVE(s, ctx->stack, ctx->stack_sz);
return -1;
}
switch(tag_val_def(obj)) {
@@ -2558,8 +2558,8 @@ enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dfla
ep += 4;
}
if (i > 0) {
- WSTACK_PUSH(com, ENC_LAST_ARRAY_ELEMENT+i-1);
- ESTACK_PUSH(s, obj);
+ WSTACK_PUSH(s, ENC_LAST_ARRAY_ELEMENT+i-1);
+ WSTACK_PUSH(s, (UWord)ptr);
}
break;
@@ -2703,9 +2703,8 @@ enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dfla
int ei;
*ep++ = NEW_FUN_EXT;
- WSTACK_PUSH(com, (UWord) ep); /* Position for patching in size */
- WSTACK_PUSH(com, ENC_PATCH_FUN_SIZE);
- ESTACK_PUSH(s,NIL); /* Will be thrown away */
+ WSTACK_PUSH(s, ENC_PATCH_FUN_SIZE);
+ WSTACK_PUSH(s, (UWord) ep); /* Position for patching in size */
ep += 4;
*ep = funp->arity;
ep += 1;
@@ -2722,8 +2721,8 @@ enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dfla
fun_env:
for (ei = funp->num_free-1; ei > 0; ei--) {
- WSTACK_PUSH(com, ENC_TERM);
- ESTACK_PUSH(s, (UWord) funp->env[ei]);
+ WSTACK_PUSH(s, ENC_TERM);
+ WSTACK_PUSH(s, (UWord) funp->env[ei]);
}
if (funp->num_free != 0) {
obj = funp->env[0];
@@ -2766,13 +2765,12 @@ enc_term_int(Process *p,ErtsAtomCacheMap *acmp, Eterm obj, byte* ep, Uint32 dfla
break;
}
}
- DESTROY_ESTACK(s);
- DESTROY_WSTACK(com);
- if (p && p->extra_root) {
- cleanup_ttb_extra_root_2(p->extra_root);
- p->extra_root = NULL;
- }
- if (count_reds) {
+ DESTROY_WSTACK(s);
+ if (ctx) {
+ if (ctx->stack) {
+ erts_free(ERTS_ALC_T_SAVED_ESTACK, ctx->stack);
+ ctx->stack = NULL;
+ }
*reds = r;
}
*res = ep;
@@ -3742,26 +3740,24 @@ static Uint encode_size_struct2(ErtsAtomCacheMap *acmp, Eterm obj, unsigned dfla
}
static int
-encode_size_struct_int(Process *p, ErtsAtomCacheMap *acmp, Eterm obj,
+encode_size_struct_int(TTBSizeContext* ctx, ErtsAtomCacheMap *acmp, Eterm obj,
unsigned dflags, Sint *reds, Uint *res)
{
DECLARE_ESTACK(s);
Uint m, i, arity;
Uint result = 0;
- int count_reds = (p != NULL && reds != 0);
Sint r = 0;
- if (count_reds) {
- ESTACK_CHANGE_ALLOCATOR(s, ERTS_ALC_T_EXTRA_ROOT);
+ if (ctx) {
+ ESTACK_CHANGE_ALLOCATOR(s, ERTS_ALC_T_SAVED_ESTACK);
r = *reds;
- }
-
- if (p && p->extra_root) { /* restore saved stack */
- ESTACK_RESTORE(s,p->extra_root->objv, p->extra_root->sz + 1);
- result = ESTACK_POP(s); /*Untagged, beyond p->extra_root->sz */
- obj = ESTACK_POP(s);
- }
+ if (ctx->stack) { /* restore saved stack */
+ ESTACK_RESTORE(s, ctx->stack, ctx->stack_sz);
+ result = ctx->result;
+ obj = ctx->obj;
+ }
+ }
goto L_jump_start;
@@ -3787,18 +3783,11 @@ encode_size_struct_int(Process *p, ErtsAtomCacheMap *acmp, Eterm obj,
}
L_jump_start:
- if (count_reds && --r == 0) {
+ if (ctx && --r == 0) {
*reds = r;
- ESTACK_PUSH(s,obj); /* push back current object */
- ESTACK_PUSH(s,result); /* Untagged, will be out of GC reach */
- if (p->extra_root == NULL) {
- p->extra_root = erts_alloc(ERTS_ALC_T_EXTRA_ROOT, sizeof(ErlExtraRootSet));
- p->extra_root->objv = NULL;
- p->extra_root->sz = 0;
- p->extra_root->cleanup = cleanup_ttb_extra_root;
- }
- ESTACK_SAVE(s, p->extra_root->objv, p->extra_root->sz);
- --p->extra_root->sz; /* Hide result from GC */
+ ctx->obj = obj;
+ ctx->result = result;
+ ESTACK_SAVE(s, ctx->stack, ctx->stack_sz);
return -1;
}
switch (tag_val_def(obj)) {
@@ -4001,11 +3990,11 @@ encode_size_struct_int(Process *p, ErtsAtomCacheMap *acmp, Eterm obj,
}
DESTROY_ESTACK(s);
- if (p && p->extra_root) {
- cleanup_ttb_extra_root(p->extra_root);
- p->extra_root = NULL;
- }
- if (count_reds) {
+ if (ctx) {
+ if (ctx->stack) {
+ erts_free(ERTS_ALC_T_SAVED_ESTACK, ctx->stack);
+ ctx->stack = NULL;
+ }
*reds = r;
}
*res = result;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 17:40:15 +0000