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dump.c
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dump.c
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// This file is a part of Julia. License is MIT: https://julialang.org/license
/*
saving and restoring system images
*/
#include <stdlib.h>
#include <string.h>
#include "julia.h"
#include "julia_internal.h"
#include "builtin_proto.h"
#ifndef _OS_WINDOWS_
#include <dlfcn.h>
#endif
#ifndef _COMPILER_MICROSOFT_
#include "valgrind.h"
#else
#define RUNNING_ON_VALGRIND 0
#endif
#include "julia_assert.h"
#ifdef __cplusplus
extern "C" {
#endif
// TODO: put WeakRefs on the weak_refs list during deserialization
// TODO: handle finalizers
// hash of definitions for predefined tagged object
static htable_t ser_tag;
// array of definitions for the predefined tagged object types
// (reverse of ser_tag)
static jl_value_t *deser_tag[256];
// hash of some common symbols, encoded as CommonSym_tag plus 1 byte
static htable_t common_symbol_tag;
static jl_value_t *deser_symbols[256];
// table of all objects that have been deserialized, indexed by pos
// (the order in the serializer stream) in MODE_MODULE, the low
// bit is reserved for flagging certain entries and pos is
// left shift by 1
// (not used in MODE_IR)
static htable_t backref_table;
static int backref_table_numel;
static arraylist_t backref_list;
// list of (jl_value_t **loc, size_t pos) entries
// for anything that was flagged by the deserializer for later
// type-rewriting of some sort
// (not used in MODE_IR)
static arraylist_t flagref_list;
// list of (size_t pos, (void *f)(jl_value_t*)) entries
// for the serializer to mark values in need of rework by function f
// during deserialization later
// (not used in MODE_IR)
static arraylist_t reinit_list;
// list of stuff that is being serialized
// (only used by the incremental serializer in MODE_MODULE)
// This is not quite globally rooted, but we take care to only
// ever assigned rooted values here.
static jl_array_t *serializer_worklist JL_GLOBALLY_ROOTED;
// inverse of backedges tree
// (only used by the incremental serializer in MODE_MODULE)
htable_t edges_map;
// list of modules being deserialized with __init__ methods
// (not used in MODE_IR)
extern jl_array_t *jl_module_init_order;
#define TAG_SYMBOL 2
#define TAG_SSAVALUE 3
#define TAG_DATATYPE 4
#define TAG_SLOTNUMBER 5
#define TAG_SVEC 6
#define TAG_ARRAY 7
#define TAG_NULL 8
#define TAG_EXPR 9
#define TAG_PHINODE 10
#define TAG_PHICNODE 11
#define TAG_LONG_SYMBOL 12
#define TAG_LONG_SVEC 13
#define TAG_LONG_EXPR 14
#define TAG_LONG_PHINODE 15
#define TAG_LONG_PHICNODE 16
#define TAG_METHODROOT 17
#define TAG_STRING 18
#define TAG_SHORT_INT64 19
#define TAG_SHORT_GENERAL 20
#define TAG_TYPEMAP_ENTRY 21
#define TAG_ARRAY1D 22
#define TAG_SINGLETON 23
#define TAG_MODULE 24
#define TAG_TVAR 25
#define TAG_METHOD_INSTANCE 26
#define TAG_METHOD 27
#define TAG_COMMONSYM 28
#define TAG_NEARBYGLOBAL 29
#define TAG_GLOBALREF 30
#define TAG_CORE 31
#define TAG_BASE 32
#define TAG_BITYPENAME 33
#define TAG_NEARBYMODULE 34
#define TAG_INT32 35
#define TAG_INT64 36
#define TAG_UINT8 37
#define TAG_VECTORTY 38
#define TAG_PTRTY 39
#define TAG_LONG_SSAVALUE 40
#define TAG_LONG_METHODROOT 41
#define TAG_SHORTER_INT64 42
#define TAG_SHORT_INT32 43
#define TAG_CALL1 44
#define TAG_CALL2 45
#define TAG_LINEINFO 46
#define TAG_SHORT_BACKREF 47
#define TAG_BACKREF 48
#define TAG_UNIONALL 49
#define TAG_GOTONODE 50
#define TAG_QUOTENODE 51
#define TAG_GENERAL 52
#define LAST_TAG 52
typedef enum _DUMP_MODES {
// not in the serializer at all, or
// something is seriously wrong
MODE_INVALID = 0,
// compressing / decompressing a CodeInfo
MODE_IR,
// jl_restore_new_module
// restoring a single module from disk for integration
// into the currently running system image / environment
MODE_MODULE
} DUMP_MODES;
typedef struct {
ios_t *s;
DUMP_MODES mode;
// method we're compressing for in MODE_IR
jl_method_t *method;
jl_ptls_t ptls;
jl_array_t *loaded_modules_array;
} jl_serializer_state;
static jl_value_t *jl_idtable_type = NULL;
static jl_typename_t *jl_idtable_typename = NULL;
static jl_value_t *jl_bigint_type = NULL;
static int gmp_limb_size = 0;
static arraylist_t builtin_typenames;
#define write_uint8(s, n) ios_putc((n), (s))
#define read_uint8(s) ((uint8_t)ios_getc(s))
#define write_int8(s, n) write_uint8(s, n)
#define read_int8(s) read_uint8(s)
/* read and write in host byte order */
static void write_int32(ios_t *s, int32_t i) JL_NOTSAFEPOINT
{
ios_write(s, (char*)&i, 4);
}
static int32_t read_int32(ios_t *s) JL_NOTSAFEPOINT
{
int32_t x = 0;
ios_read(s, (char*)&x, 4);
return x;
}
static void write_uint64(ios_t *s, uint64_t i) JL_NOTSAFEPOINT
{
ios_write(s, (char*)&i, 8);
}
static uint64_t read_uint64(ios_t *s) JL_NOTSAFEPOINT
{
uint64_t x = 0;
ios_read(s, (char*)&x, 8);
return x;
}
static void write_int64(ios_t *s, int64_t i) JL_NOTSAFEPOINT
{
ios_write(s, (char*)&i, 8);
}
static void write_uint16(ios_t *s, uint16_t i) JL_NOTSAFEPOINT
{
ios_write(s, (char*)&i, 2);
}
static uint16_t read_uint16(ios_t *s) JL_NOTSAFEPOINT
{
int16_t x = 0;
ios_read(s, (char*)&x, 2);
return x;
}
static void write_float64(ios_t *s, double x) JL_NOTSAFEPOINT
{
write_uint64(s, *((uint64_t*)&x));
}
// --- serialize ---
#define jl_serialize_value(s, v) jl_serialize_value_((s), (jl_value_t*)(v), 0)
static void jl_serialize_value_(jl_serializer_state *s, jl_value_t *v, int as_literal) JL_GC_DISABLED;
static jl_value_t *jl_deserialize_value(jl_serializer_state *s, jl_value_t **loc) JL_GC_DISABLED;
static int module_in_worklist(jl_module_t *mod) JL_NOTSAFEPOINT
{
int i, l = jl_array_len(serializer_worklist);
for (i = 0; i < l; i++) {
jl_module_t *workmod = (jl_module_t*)jl_array_ptr_ref(serializer_worklist, i);
if (jl_is_module(workmod) && jl_is_submodule(mod, workmod))
return 1;
}
return 0;
}
// compute whether a type references something internal to worklist
// and thus could not have existed before deserialize
// and thus does not need delayed unique-ing
static int type_in_worklist(jl_datatype_t *dt) JL_NOTSAFEPOINT
{
if (module_in_worklist(dt->name->module))
return 1;
int i, l = jl_svec_len(dt->parameters);
for (i = 0; i < l; i++) {
jl_value_t *p = jl_unwrap_unionall(jl_tparam(dt, i));
if (type_in_worklist((jl_datatype_t*)(jl_is_datatype(p) ? p : jl_typeof(p))))
return 1;
}
return 0;
}
static int type_recursively_external(jl_datatype_t *dt);
static int type_parameter_recursively_external(jl_value_t *p0) JL_NOTSAFEPOINT
{
jl_datatype_t *p = (jl_datatype_t*)p0;
while (jl_is_unionall(p)) {
if (!type_parameter_recursively_external(((jl_unionall_t*)p)->var->lb))
return 0;
if (!type_parameter_recursively_external(((jl_unionall_t*)p)->var->ub))
return 0;
p = (jl_datatype_t*)((jl_unionall_t*)p)->body;
}
if (!jl_is_datatype(p) || p->uid == 0)
return 0;
if (module_in_worklist(p->name->module))
return 0;
if (p->name->wrapper != (jl_value_t*)p0) {
if (!type_recursively_external(p))
return 0;
}
return 1;
}
// returns true if all of the parameters are tag 6 or 7
static int type_recursively_external(jl_datatype_t *dt) JL_NOTSAFEPOINT
{
if (dt->uid == 0)
return 0;
if (jl_svec_len(dt->parameters) == 0)
return 1;
int i, l = jl_svec_len(dt->parameters);
for (i = 0; i < l; i++) {
if (!type_parameter_recursively_external(jl_tparam(dt, i)))
return 0;
}
return 1;
}
static void jl_serialize_datatype(jl_serializer_state *s, jl_datatype_t *dt) JL_GC_DISABLED
{
int tag = 0;
int internal = module_in_worklist(dt->name->module);
if (!internal && jl_unwrap_unionall(dt->name->wrapper) == (jl_value_t*)dt) {
tag = 6; // external primary type
}
else if (dt->uid == 0) {
tag = 0; // normal struct
}
else if (internal) {
if (jl_unwrap_unionall(dt->name->wrapper) == (jl_value_t*)dt) // comes up often since functions create types
tag = 5; // internal, and not in the typename cache (just needs uid reassigned)
else
tag = 10; // anything else that's internal (just needs uid reassigned and possibly recaching)
}
else if (type_recursively_external(dt)) {
tag = 7; // external type that can be immediately recreated (with apply_type)
}
else if (type_in_worklist(dt)) {
tag = 10; // external, but definitely new (still needs uid and caching, but not full unique-ing)
}
else {
// this'll need a uid and unique-ing later
// flag this in the backref table as special
uintptr_t *bp = (uintptr_t*)ptrhash_bp(&backref_table, dt);
assert(*bp != (uintptr_t)HT_NOTFOUND);
*bp |= 1;
tag = 10;
}
if (strncmp(jl_symbol_name(dt->name->name), "#kw#", 4) == 0) {
/* XXX: yuck, but the auto-generated kw types from the serializer isn't a real type, so we *must* be very careful */
assert(tag == 0 || tag == 5 || tag == 6 || tag == 10);
if (tag == 6) {
jl_methtable_t *mt = dt->name->mt;
jl_datatype_t *primarydt = (jl_datatype_t*)jl_unwrap_unionall(jl_get_global(mt->module, mt->name));
assert(jl_is_datatype(primarydt));
assert(jl_typeof(primarydt->name->mt->kwsorter) == (jl_value_t*)dt);
dt = primarydt;
tag = 9;
}
}
write_uint8(s->s, TAG_DATATYPE);
write_uint8(s->s, tag);
if (tag == 6) {
jl_serialize_value(s, dt->name);
return;
}
if (tag == 7) {
jl_serialize_value(s, dt->name);
jl_serialize_value(s, dt->parameters);
return;
}
if (tag == 9) {
jl_serialize_value(s, dt);
return;
}
write_int32(s->s, dt->size);
int has_instance = (dt->instance != NULL);
int has_layout = (dt->layout != NULL);
write_uint8(s->s, dt->abstract | (dt->mutabl << 1) | (has_layout << 2) | (has_instance << 3));
write_uint8(s->s, dt->hasfreetypevars
| (dt->isconcretetype << 1)
| (dt->isdispatchtuple << 2)
| (dt->isbitstype << 3)
| (dt->zeroinit << 4)
| (dt->isinlinealloc << 5));
if (!dt->abstract) {
write_uint16(s->s, dt->ninitialized);
}
if (has_layout) {
uint8_t layout = 0;
if (dt->layout == ((jl_datatype_t*)jl_unwrap_unionall((jl_value_t*)jl_array_type))->layout) {
layout = 1;
}
else if (dt->layout == jl_void_type->layout) {
layout = 2;
}
else if (dt->layout == ((jl_datatype_t*)jl_unwrap_unionall((jl_value_t*)jl_pointer_type))->layout) {
layout = 3;
}
write_uint8(s->s, layout);
if (layout == 0) {
uint32_t nf = dt->layout->nfields;
write_int32(s->s, nf);
uint32_t alignment = ((uint32_t*)dt->layout)[1];
write_int32(s->s, alignment);
if (dt->layout->npointers && nf)
write_int32(s->s, ((uint32_t*)dt->layout)[-1]);
size_t fieldsize = jl_fielddesc_size(dt->layout->fielddesc_type);
ios_write(s->s, (char*)(&dt->layout[1]), nf * fieldsize);
}
}
if (has_instance)
jl_serialize_value(s, dt->instance);
jl_serialize_value(s, dt->name);
jl_serialize_value(s, dt->names);
jl_serialize_value(s, dt->parameters);
jl_serialize_value(s, dt->super);
jl_serialize_value(s, dt->types);
}
static void jl_serialize_module(jl_serializer_state *s, jl_module_t *m)
{
write_uint8(s->s, TAG_MODULE);
jl_serialize_value(s, m->name);
size_t i;
if (!module_in_worklist(m)) {
if (m == m->parent) {
// top-level module
write_int8(s->s, 2);
int j = 0;
for (i = 0; i < jl_array_len(s->loaded_modules_array); i++) {
jl_module_t *mi = (jl_module_t*)jl_array_ptr_ref(s->loaded_modules_array, i);
if (!module_in_worklist(mi)) {
if (m == mi) {
write_int32(s->s, j);
return;
}
j++;
}
}
assert(0 && "top level module not found in modules array");
}
else {
write_int8(s->s, 1);
jl_serialize_value(s, m->parent);
}
return;
}
write_int8(s->s, 0);
jl_serialize_value(s, m->parent);
void **table = m->bindings.table;
for(i=1; i < m->bindings.size; i+=2) {
if (table[i] != HT_NOTFOUND) {
jl_binding_t *b = (jl_binding_t*)table[i];
if (b->owner == m || m != jl_main_module) {
jl_serialize_value(s, b->name);
jl_serialize_value(s, b->value);
jl_serialize_value(s, b->globalref);
jl_serialize_value(s, b->owner);
write_int8(s->s, (b->deprecated<<3) | (b->constp<<2) | (b->exportp<<1) | (b->imported));
}
}
}
jl_serialize_value(s, NULL);
if (m == jl_main_module) {
write_int32(s->s, 1);
jl_serialize_value(s, (jl_value_t*)jl_core_module);
}
else {
write_int32(s->s, m->usings.len);
for(i=0; i < m->usings.len; i++) {
jl_serialize_value(s, (jl_value_t*)m->usings.items[i]);
}
}
write_uint8(s->s, m->istopmod);
write_uint64(s->s, m->uuid.hi);
write_uint64(s->s, m->uuid.lo);
write_uint64(s->s, m->build_id);
write_int32(s->s, m->counter);
write_int32(s->s, m->nospecialize);
}
static int is_ast_node(jl_value_t *v)
{
// TODO: this accidentally copies QuoteNode(Expr(...)) and QuoteNode(svec(...))
return jl_is_slot(v) || jl_is_ssavalue(v) ||
jl_is_uniontype(v) || jl_is_expr(v) || jl_is_newvarnode(v) ||
jl_is_svec(v) || jl_is_tuple(v) || ((jl_datatype_t*)jl_typeof(v))->instance ||
jl_is_int32(v) || jl_is_int64(v) || jl_is_bool(v) || jl_is_uint8(v) ||
jl_is_quotenode(v) || jl_is_gotonode(v) || jl_is_linenode(v) || jl_is_globalref(v) ||
jl_is_phinode(v) || jl_is_phicnode(v) || jl_is_upsilonnode(v) || jl_is_pinode(v) ||
jl_typeis(v, jl_lineinfonode_type);
}
static int literal_val_id(jl_serializer_state *s, jl_value_t *v) JL_GC_DISABLED
{
jl_array_t *rs = s->method->roots;
int i, l = jl_array_len(rs);
if (jl_is_symbol(v) || jl_is_concrete_type(v)) {
for (i = 0; i < l; i++) {
if (jl_array_ptr_ref(rs, i) == v)
return i;
}
}
else {
for (i = 0; i < l; i++) {
if (jl_egal(jl_array_ptr_ref(rs, i), v))
return i;
}
}
jl_array_ptr_1d_push(rs, v);
return jl_array_len(rs) - 1;
}
static void jl_serialize_value_(jl_serializer_state *s, jl_value_t *v, int as_literal) JL_GC_DISABLED
{
if (v == NULL) {
write_uint8(s->s, TAG_NULL);
return;
}
void *tag = ptrhash_get(&ser_tag, v);
if (tag != HT_NOTFOUND) {
uint8_t t8 = (intptr_t)tag;
if (t8 <= LAST_TAG)
write_uint8(s->s, 0);
write_uint8(s->s, t8);
return;
}
if (jl_is_symbol(v)) {
void *idx = ptrhash_get(&common_symbol_tag, v);
if (idx != HT_NOTFOUND) {
write_uint8(s->s, TAG_COMMONSYM);
write_uint8(s->s, (uint8_t)(size_t)idx);
return;
}
}
else if (v == (jl_value_t*)jl_core_module) {
write_uint8(s->s, TAG_CORE);
return;
}
else if (v == (jl_value_t*)jl_base_module) {
write_uint8(s->s, TAG_BASE);
return;
}
if (s->mode == MODE_IR) {
if (v == (jl_value_t*)s->method->module) {
write_uint8(s->s, TAG_NEARBYMODULE);
return;
}
else if (jl_is_datatype(v) && ((jl_datatype_t*)v)->name == jl_array_typename &&
jl_is_long(jl_tparam1(v)) && jl_unbox_long(jl_tparam1(v)) == 1 &&
!((jl_datatype_t*)v)->hasfreetypevars) {
write_uint8(s->s, TAG_VECTORTY);
jl_serialize_value(s, jl_tparam0(v));
return;
}
else if (jl_is_datatype(v) && ((jl_datatype_t*)v)->name == jl_pointer_typename &&
!((jl_datatype_t*)v)->hasfreetypevars) {
write_uint8(s->s, TAG_PTRTY);
jl_serialize_value(s, jl_tparam0(v));
return;
}
else if (!as_literal && !is_ast_node(v)) {
int id = literal_val_id(s, v);
assert(id >= 0);
if (id < 256) {
write_uint8(s->s, TAG_METHODROOT);
write_uint8(s->s, id);
}
else {
assert(id <= UINT16_MAX);
write_uint8(s->s, TAG_LONG_METHODROOT);
write_uint16(s->s, id);
}
return;
}
}
else if (!jl_is_uint8(v)) {
void **bp = ptrhash_bp(&backref_table, v);
if (*bp != HT_NOTFOUND) {
uintptr_t pos = (char*)*bp - (char*)HT_NOTFOUND - 1;
if (pos < 65536) {
write_uint8(s->s, TAG_SHORT_BACKREF);
write_uint16(s->s, pos);
}
else {
write_uint8(s->s, TAG_BACKREF);
write_int32(s->s, pos);
}
return;
}
intptr_t pos = backref_table_numel++;
if (((jl_datatype_t*)(jl_typeof(v)))->name == jl_idtable_typename) {
// will need to rehash this, later (after types are fully constructed)
arraylist_push(&reinit_list, (void*)pos);
arraylist_push(&reinit_list, (void*)1);
}
if (jl_is_module(v)) {
jl_module_t *m = (jl_module_t*)v;
if (module_in_worklist(m) && !module_in_worklist(m->parent)) {
// will need to reinsert this into parent bindings, later (in case of any errors during reinsert)
arraylist_push(&reinit_list, (void*)pos);
arraylist_push(&reinit_list, (void*)2);
}
}
// TypeMapLevels need to be rehashed
if (jl_is_mtable(v)) {
arraylist_push(&reinit_list, (void*)pos);
arraylist_push(&reinit_list, (void*)3);
}
if (jl_is_method(v) && jl_typeof(((jl_method_t*)v)->specializations) == (jl_value_t*)jl_typemap_level_type) {
arraylist_push(&reinit_list, (void*)pos);
arraylist_push(&reinit_list, (void*)4);
}
pos <<= 1;
ptrhash_put(&backref_table, v, (char*)HT_NOTFOUND + pos + 1);
}
size_t i;
if (jl_is_svec(v)) {
size_t l = jl_svec_len(v);
if (l <= 255) {
write_uint8(s->s, TAG_SVEC);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_SVEC);
write_int32(s->s, l);
}
for (i = 0; i < l; i++) {
jl_serialize_value(s, jl_svecref(v, i));
}
}
else if (jl_is_symbol(v)) {
size_t l = strlen(jl_symbol_name((jl_sym_t*)v));
if (l <= 255) {
write_uint8(s->s, TAG_SYMBOL);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_SYMBOL);
write_int32(s->s, l);
}
ios_write(s->s, jl_symbol_name((jl_sym_t*)v), l);
}
else if (jl_is_globalref(v)) {
if (s->mode == MODE_IR && jl_globalref_mod(v) == s->method->module) {
write_uint8(s->s, TAG_NEARBYGLOBAL);
jl_serialize_value(s, jl_globalref_name(v));
}
else {
write_uint8(s->s, TAG_GLOBALREF);
jl_serialize_value(s, jl_globalref_mod(v));
jl_serialize_value(s, jl_globalref_name(v));
}
}
else if (jl_is_ssavalue(v) && ((jl_ssavalue_t*)v)->id < 256 && ((jl_ssavalue_t*)v)->id >= 0) {
write_uint8(s->s, TAG_SSAVALUE);
write_uint8(s->s, ((jl_ssavalue_t*)v)->id);
}
else if (jl_is_ssavalue(v) && ((jl_ssavalue_t*)v)->id <= UINT16_MAX && ((jl_ssavalue_t*)v)->id >= 0) {
write_uint8(s->s, TAG_LONG_SSAVALUE);
write_uint16(s->s, ((jl_ssavalue_t*)v)->id);
}
else if (jl_typeis(v, jl_slotnumber_type) && jl_slot_number(v) <= UINT16_MAX && jl_slot_number(v) >= 0) {
write_uint8(s->s, TAG_SLOTNUMBER);
write_uint16(s->s, jl_slot_number(v));
}
else if (jl_is_array(v)) {
jl_array_t *ar = (jl_array_t*)v;
if (ar->flags.ndims == 1 && ar->elsize < 128) {
write_uint8(s->s, TAG_ARRAY1D);
write_uint8(s->s, (ar->flags.ptrarray<<7) | (ar->elsize & 0x7f));
}
else {
write_uint8(s->s, TAG_ARRAY);
write_uint16(s->s, ar->flags.ndims);
write_uint16(s->s, (ar->flags.ptrarray<<15) | (ar->elsize & 0x7fff));
}
for (i = 0; i < ar->flags.ndims; i++)
jl_serialize_value(s, jl_box_long(jl_array_dim(ar,i)));
jl_serialize_value(s, jl_typeof(ar));
if (!ar->flags.ptrarray) {
ios_write(s->s, (char*)jl_array_data(ar), jl_array_len(ar) * ar->elsize);
if (jl_array_isbitsunion(ar))
ios_write(s->s, jl_array_typetagdata(ar), jl_array_len(ar));
}
else {
for (i = 0; i < jl_array_len(ar); i++) {
jl_serialize_value(s, jl_array_ptr_ref(v, i));
}
}
}
else if (jl_is_expr(v)) {
jl_expr_t *e = (jl_expr_t*)v;
size_t l = jl_array_len(e->args);
if (e->head == call_sym) {
if (l == 2) {
write_uint8(s->s, TAG_CALL1);
jl_serialize_value(s, jl_exprarg(e, 0));
jl_serialize_value(s, jl_exprarg(e, 1));
return;
}
else if (l == 3) {
write_uint8(s->s, TAG_CALL2);
jl_serialize_value(s, jl_exprarg(e, 0));
jl_serialize_value(s, jl_exprarg(e, 1));
jl_serialize_value(s, jl_exprarg(e, 2));
return;
}
}
if (l <= 255) {
write_uint8(s->s, TAG_EXPR);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_EXPR);
write_int32(s->s, l);
}
jl_serialize_value(s, e->head);
for (i = 0; i < l; i++) {
jl_serialize_value(s, jl_exprarg(e, i));
}
}
else if (jl_is_phinode(v)) {
jl_array_t *edges = (jl_array_t*)jl_fieldref_noalloc(v, 0);
jl_array_t *values = (jl_array_t*)jl_fieldref_noalloc(v, 1);
size_t l = jl_array_len(edges);
if (l <= 255 && jl_array_len(values) == l) {
write_uint8(s->s, TAG_PHINODE);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_PHINODE);
write_int32(s->s, l);
write_int32(s->s, jl_array_len(values));
}
for (i = 0; i < l; i++) {
jl_serialize_value(s, jl_array_ptr_ref(edges, i));
}
l = jl_array_len(values);
for (i = 0; i < l; i++) {
jl_serialize_value(s, jl_array_ptr_ref(values, i));
}
}
else if (jl_is_phicnode(v)) {
jl_array_t *values = (jl_array_t*)jl_fieldref_noalloc(v, 0);
size_t l = jl_array_len(values);
if (l <= 255) {
write_uint8(s->s, TAG_PHICNODE);
write_uint8(s->s, (uint8_t)l);
}
else {
write_uint8(s->s, TAG_LONG_PHICNODE);
write_int32(s->s, l);
}
for (i = 0; i < l; i++) {
jl_serialize_value(s, jl_array_ptr_ref(values, i));
}
}
else if (jl_is_gotonode(v)) {
write_uint8(s->s, TAG_GOTONODE);
jl_serialize_value(s, jl_get_nth_field(v, 0));
}
else if (jl_is_quotenode(v)) {
write_uint8(s->s, TAG_QUOTENODE);
jl_serialize_value(s, jl_get_nth_field(v, 0));
}
else if (jl_is_datatype(v)) {
jl_serialize_datatype(s, (jl_datatype_t*)v);
}
else if (jl_is_unionall(v)) {
write_uint8(s->s, TAG_UNIONALL);
jl_datatype_t *d = (jl_datatype_t*)jl_unwrap_unionall(v);
if (jl_is_datatype(d) && d->name->wrapper == v &&
!module_in_worklist(d->name->module)) {
write_uint8(s->s, 1);
jl_serialize_value(s, d->name->module);
jl_serialize_value(s, d->name->name);
}
else {
write_uint8(s->s, 0);
jl_serialize_value(s, ((jl_unionall_t*)v)->var);
jl_serialize_value(s, ((jl_unionall_t*)v)->body);
}
}
else if (jl_is_typevar(v)) {
write_uint8(s->s, TAG_TVAR);
jl_serialize_value(s, ((jl_tvar_t*)v)->name);
jl_serialize_value(s, ((jl_tvar_t*)v)->lb);
jl_serialize_value(s, ((jl_tvar_t*)v)->ub);
}
else if (jl_is_method(v)) {
write_uint8(s->s, TAG_METHOD);
jl_method_t *m = (jl_method_t*)v;
int internal = 1;
int external_mt = 0;
internal = module_in_worklist(m->module);
if (!internal) {
// flag this in the backref table as special
uintptr_t *bp = (uintptr_t*)ptrhash_bp(&backref_table, v);
assert(*bp != (uintptr_t)HT_NOTFOUND);
*bp |= 1;
}
jl_serialize_value(s, (jl_value_t*)m->sig);
write_uint8(s->s, internal);
if (!internal)
return;
jl_datatype_t *gf = jl_first_argument_datatype((jl_value_t*)m->sig);
assert(jl_is_datatype(gf) && gf->name->mt);
external_mt = !module_in_worklist(gf->name->mt->module);
jl_serialize_value(s, m->specializations);
jl_serialize_value(s, (jl_value_t*)m->name);
jl_serialize_value(s, (jl_value_t*)m->file);
write_int32(s->s, m->line);
if (external_mt)
jl_serialize_value(s, jl_nothing);
else
jl_serialize_value(s, (jl_value_t*)m->ambig);
write_int32(s->s, m->called);
write_int32(s->s, m->nargs);
write_int32(s->s, m->nospecialize);
write_int8(s->s, m->isva);
write_int8(s->s, m->pure);
jl_serialize_value(s, (jl_value_t*)m->module);
jl_serialize_value(s, (jl_value_t*)m->sparam_syms);
jl_serialize_value(s, (jl_value_t*)m->roots);
jl_serialize_value(s, (jl_value_t*)m->source);
jl_serialize_value(s, (jl_value_t*)m->unspecialized);
jl_serialize_value(s, (jl_value_t*)m->generator);
jl_serialize_value(s, (jl_value_t*)m->invokes);
}
else if (jl_is_method_instance(v)) {
write_uint8(s->s, TAG_METHOD_INSTANCE);
jl_method_instance_t *li = (jl_method_instance_t*)v;
int internal = 0;
if (li->max_world == 0 && li->min_world == 0) {
internal = 1; // not world-tracked
}
else if (!jl_is_method(li->def.method) || module_in_worklist(li->def.method->module)) {
if (li->max_world == ~(size_t)0) {
internal = 2; // update world on deserialization
}
else {
internal = 3; // garbage object :(
}
}
if (!internal) {
// also flag this in the backref table as special
uintptr_t *bp = (uintptr_t*)ptrhash_bp(&backref_table, v);
assert(*bp != (uintptr_t)HT_NOTFOUND);
*bp |= 1;
}
if (li->invoke == jl_fptr_const_return)
write_uint8(s->s, internal | 4);
else
write_uint8(s->s, internal);
jl_serialize_value(s, (jl_value_t*)li->specTypes);
if (!internal)
jl_serialize_value(s, (jl_value_t*)li->def.method->sig);
else
jl_serialize_value(s, li->def.value);
if (!internal)
return;
jl_serialize_value(s, li->inferred);
jl_serialize_value(s, li->inferred_const);
jl_serialize_value(s, li->rettype);
jl_serialize_value(s, (jl_value_t*)li->sparam_vals);
jl_array_t *backedges = li->backedges;
if (s->mode == MODE_MODULE && backedges) {
// filter backedges to only contain pointers
// to items that we will actually store (internal == 2)
size_t ins, i, l = jl_array_len(backedges);
jl_method_instance_t **b_edges = (jl_method_instance_t**)jl_array_data(backedges);
for (ins = i = 0; i < l; i++) {
jl_method_instance_t *backedge = b_edges[i];
if (module_in_worklist(backedge->def.method->module)) {
b_edges[ins++] = backedge;
}
}
if (ins != l)
jl_array_del_end(backedges, l - ins);
if (ins == 0)
backedges = NULL;
}
jl_serialize_value(s, (jl_value_t*)backedges);
}
else if (jl_typeis(v, jl_module_type)) {
jl_serialize_module(s, (jl_module_t*)v);
}
else if (jl_typeis(v, jl_task_type)) {
jl_error("Task cannot be serialized");
}
else if (jl_typeis(v, jl_string_type)) {
write_uint8(s->s, TAG_STRING);
write_int32(s->s, jl_string_len(v));
ios_write(s->s, jl_string_data(v), jl_string_len(v));
}
else if (jl_typeis(v, jl_typemap_entry_type)) {
write_uint8(s->s, TAG_TYPEMAP_ENTRY);
size_t n = 0;
jl_typemap_entry_t *te = (jl_typemap_entry_t*)v;
while ((jl_value_t*)te != jl_nothing) {
n++; te = te->next;
}
write_int32(s->s, n);
te = (jl_typemap_entry_t*)v;
size_t i, nf = jl_datatype_nfields(jl_typemap_entry_type);
while ((jl_value_t*)te != jl_nothing) {
for (i = 1; i < nf; i++) {
if (jl_field_size(jl_typemap_entry_type, i) > 0) {
jl_serialize_value(s, jl_get_nth_field((jl_value_t*)te, i));
if (!jl_field_isptr(jl_typemap_entry_type, i))
write_int8(s->s, 0);
}
}
te = te->next;
}
}
else if (jl_typeis(v, jl_int64_type)) {
void *data = jl_data_ptr(v);
if (*(int64_t*)data >= INT16_MIN && *(int64_t*)data <= INT16_MAX) {
write_uint8(s->s, TAG_SHORTER_INT64);
write_uint16(s->s, (uint16_t)*(int64_t*)data);
}
else if (*(int64_t*)data >= S32_MIN && *(int64_t*)data <= S32_MAX) {
write_uint8(s->s, TAG_SHORT_INT64);
write_int32(s->s, (int32_t)*(int64_t*)data);
}
else {
write_uint8(s->s, TAG_INT64);
write_int64(s->s, *(int64_t*)data);
}
}
else if (jl_typeis(v, jl_int32_type)) {
void *data = jl_data_ptr(v);
if (*(int32_t*)data >= INT16_MIN && *(int32_t*)data <= INT16_MAX) {
write_uint8(s->s, TAG_SHORT_INT32);
write_uint16(s->s, (uint16_t)*(int32_t*)data);
}
else {
write_uint8(s->s, TAG_INT32);
write_int32(s->s, *(int32_t*)data);
}
}
else if (jl_typeis(v, jl_uint8_type)) {
write_uint8(s->s, TAG_UINT8);
write_int8(s->s, *(int8_t*)jl_data_ptr(v));
}
else if (jl_typeis(v, jl_lineinfonode_type)) {
write_uint8(s->s, TAG_LINEINFO);
for (i = 0; i < jl_datatype_nfields(jl_lineinfonode_type); i++)
jl_serialize_value(s, jl_get_nth_field(v, i));
}
else if (jl_bigint_type && jl_typeis(v, jl_bigint_type)) {
write_uint8(s->s, TAG_SHORT_GENERAL);
write_uint8(s->s, jl_datatype_size(jl_bigint_type));
jl_serialize_value(s, jl_bigint_type);
jl_value_t *sizefield = jl_get_nth_field(v, 1);
jl_serialize_value(s, sizefield);
void *data = jl_unbox_voidpointer(jl_get_nth_field(v, 2));
int32_t sz = jl_unbox_int32(sizefield);
size_t nb = (sz == 0 ? 1 : (sz < 0 ? -sz : sz)) * gmp_limb_size;
ios_write(s->s, (char*)data, nb);
}
else {
jl_datatype_t *t = (jl_datatype_t*)jl_typeof(v);
void *data = jl_data_ptr(v);
{
if (v == t->instance) {
if (s->mode == MODE_MODULE && !type_in_worklist(t)) {
// also flag this in the backref table as special
// if it might not be unique (is external)
uintptr_t *bp = (uintptr_t*)ptrhash_bp(&backref_table, v);
assert(*bp != (uintptr_t)HT_NOTFOUND);
*bp |= 1;
}
write_uint8(s->s, TAG_SINGLETON);
jl_serialize_value(s, t);
return;
}
assert(!t->instance && "detected singleton construction corruption");
if (t == jl_typename_type) {
void *bttag = ptrhash_get(&ser_tag, ((jl_typename_t*)t)->wrapper);
if (bttag != HT_NOTFOUND) {
write_uint8(s->s, TAG_BITYPENAME);
write_uint8(s->s, (uint8_t)(intptr_t)bttag);
return;
}
}
if (t->size <= 255) {
write_uint8(s->s, TAG_SHORT_GENERAL);
write_uint8(s->s, t->size);
}
else {
write_uint8(s->s, TAG_GENERAL);
write_int32(s->s, t->size);
}
jl_serialize_value(s, t);
if (t == jl_typename_type) {
if (module_in_worklist(((jl_typename_t*)v)->module)) {
write_uint8(s->s, 0);
}
else {
write_uint8(s->s, 1);
jl_typename_t *tn = (jl_typename_t*)v;
jl_serialize_value(s, tn->module);
jl_serialize_value(s, tn->name);
return;
}
}
if (t == jl_typemap_level_type) {
// perform some compression on the typemap levels
// (which will need to be rehashed during deserialization anyhow)
jl_typemap_level_t *node = (jl_typemap_level_t*)v;
assert( // make sure this type has the expected ordering
offsetof(jl_typemap_level_t, arg1) == 0 * sizeof(jl_value_t*) &&
offsetof(jl_typemap_level_t, targ) == 2 * sizeof(jl_value_t*) &&
offsetof(jl_typemap_level_t, linear) == 4 * sizeof(jl_value_t*) &&
offsetof(jl_typemap_level_t, any) == 5 * sizeof(jl_value_t*) &&
offsetof(jl_typemap_level_t, key) == 6 * sizeof(jl_value_t*) &&
sizeof(jl_typemap_level_t) == 7 * sizeof(jl_value_t*));
jl_serialize_value(s, jl_nothing);
jl_serialize_value(s, node->arg1.values);
jl_serialize_value(s, jl_nothing);
jl_serialize_value(s, node->targ.values);
jl_serialize_value(s, node->linear);