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alloc.c
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alloc.c
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// This file is a part of Julia. License is MIT: http://julialang.org/license
/*
object constructors
*/
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#include "julia.h"
#include "julia_internal.h"
#ifdef __cplusplus
extern "C" {
#endif
JL_DLLEXPORT jl_value_t *jl_true;
JL_DLLEXPORT jl_value_t *jl_false;
jl_tvar_t *jl_typetype_tvar;
jl_datatype_t *jl_typetype_type;
jl_value_t *jl_ANY_flag;
jl_datatype_t *jl_typector_type;
jl_datatype_t *jl_array_type;
jl_typename_t *jl_array_typename;
jl_value_t *jl_array_uint8_type;
jl_value_t *jl_array_any_type=NULL;
jl_value_t *jl_array_symbol_type;
jl_datatype_t *jl_weakref_type;
jl_datatype_t *jl_string_type;
jl_datatype_t *jl_expr_type;
jl_datatype_t *jl_globalref_type;
jl_datatype_t *jl_linenumbernode_type;
jl_datatype_t *jl_labelnode_type;
jl_datatype_t *jl_gotonode_type;
jl_datatype_t *jl_quotenode_type;
jl_datatype_t *jl_newvarnode_type;
jl_datatype_t *jl_intrinsic_type;
jl_datatype_t *jl_method_type;
jl_datatype_t *jl_methtable_type;
jl_datatype_t *jl_typemap_entry_type;
jl_datatype_t *jl_typemap_level_type;
jl_datatype_t *jl_lambda_info_type;
jl_datatype_t *jl_module_type;
jl_datatype_t *jl_errorexception_type=NULL;
jl_datatype_t *jl_argumenterror_type;
jl_datatype_t *jl_typeerror_type;
jl_datatype_t *jl_methoderror_type;
jl_datatype_t *jl_loaderror_type;
jl_datatype_t *jl_initerror_type;
jl_datatype_t *jl_undefvarerror_type;
jl_datatype_t *jl_ref_type;
jl_datatype_t *jl_pointer_type;
jl_datatype_t *jl_void_type;
jl_datatype_t *jl_voidpointer_type;
jl_value_t *jl_an_empty_vec_any=NULL;
jl_value_t *jl_stackovf_exception;
#ifdef SEGV_EXCEPTION
jl_value_t *jl_segv_exception;
#endif
JL_DLLEXPORT jl_value_t *jl_diverror_exception;
JL_DLLEXPORT jl_value_t *jl_domain_exception;
JL_DLLEXPORT jl_value_t *jl_overflow_exception;
JL_DLLEXPORT jl_value_t *jl_inexact_exception;
JL_DLLEXPORT jl_value_t *jl_undefref_exception;
jl_value_t *jl_interrupt_exception;
jl_datatype_t *jl_boundserror_type;
jl_value_t *jl_memory_exception;
jl_value_t *jl_readonlymemory_exception;
union jl_typemap_t jl_cfunction_list;
jl_sym_t *call_sym; jl_sym_t *invoke_sym;
jl_sym_t *dots_sym; jl_sym_t *empty_sym;
jl_sym_t *module_sym; jl_sym_t *slot_sym;
jl_sym_t *export_sym; jl_sym_t *import_sym;
jl_sym_t *importall_sym; jl_sym_t *toplevel_sym;
jl_sym_t *quote_sym; jl_sym_t *amp_sym;
jl_sym_t *top_sym; jl_sym_t *colons_sym;
jl_sym_t *line_sym; jl_sym_t *jl_incomplete_sym;
// head symbols for each expression type
jl_sym_t *goto_sym; jl_sym_t *goto_ifnot_sym;
jl_sym_t *label_sym; jl_sym_t *return_sym;
jl_sym_t *lambda_sym; jl_sym_t *assign_sym;
jl_sym_t *body_sym; jl_sym_t *globalref_sym;
jl_sym_t *method_sym; jl_sym_t *core_sym;
jl_sym_t *enter_sym; jl_sym_t *leave_sym;
jl_sym_t *exc_sym; jl_sym_t *error_sym;
jl_sym_t *new_sym; jl_sym_t *using_sym;
jl_sym_t *const_sym; jl_sym_t *thunk_sym;
jl_sym_t *anonymous_sym; jl_sym_t *underscore_sym;
jl_sym_t *abstracttype_sym; jl_sym_t *bitstype_sym;
jl_sym_t *compositetype_sym;
jl_sym_t *global_sym; jl_sym_t *list_sym;
jl_sym_t *dot_sym; jl_sym_t *newvar_sym;
jl_sym_t *boundscheck_sym; jl_sym_t *inbounds_sym;
jl_sym_t *copyast_sym; jl_sym_t *fastmath_sym;
jl_sym_t *pure_sym; jl_sym_t *simdloop_sym;
jl_sym_t *meta_sym; jl_sym_t *compiler_temp_sym;
jl_sym_t *inert_sym; jl_sym_t *vararg_sym;
jl_sym_t *unused_sym; jl_sym_t *static_parameter_sym;
jl_sym_t *polly_sym; jl_sym_t *inline_sym;
typedef struct {
int64_t a;
int64_t b;
} bits128_t;
// Note that this function updates len
static jl_value_t *jl_new_bits_internal(jl_value_t *dt, void *data, size_t *len)
{
jl_ptls_t ptls = jl_get_ptls_states();
assert(jl_is_datatype(dt));
jl_datatype_t *bt = (jl_datatype_t*)dt;
size_t nb = jl_datatype_size(bt);
if (nb == 0)
return jl_new_struct_uninit(bt);
*len = LLT_ALIGN(*len, bt->layout->alignment);
data = (char*)data + (*len);
*len += nb;
if (bt == jl_uint8_type) return jl_box_uint8(*(uint8_t*)data);
if (bt == jl_int64_type) return jl_box_int64(*(int64_t*)data);
if (bt == jl_bool_type) return (*(int8_t*)data) ? jl_true:jl_false;
if (bt == jl_int32_type) return jl_box_int32(*(int32_t*)data);
if (bt == jl_float64_type) return jl_box_float64(*(double*)data);
jl_value_t *v = jl_gc_alloc(ptls, nb, bt);
switch (nb) {
case 1: *(int8_t*) jl_data_ptr(v) = *(int8_t*)data; break;
case 2: *(int16_t*) jl_data_ptr(v) = *(int16_t*)data; break;
case 4: *(int32_t*) jl_data_ptr(v) = *(int32_t*)data; break;
case 8: *(int64_t*) jl_data_ptr(v) = *(int64_t*)data; break;
case 16: *(bits128_t*)jl_data_ptr(v) = *(bits128_t*)data; break;
default: memcpy(jl_data_ptr(v), data, nb);
}
return v;
}
JL_DLLEXPORT jl_value_t *jl_new_bits(jl_value_t *bt, void *data)
{
size_t len = 0;
return jl_new_bits_internal(bt, data, &len);
}
void jl_assign_bits(void *dest, jl_value_t *bits)
{
size_t nb = jl_datatype_size(jl_typeof(bits));
if (nb == 0) return;
switch (nb) {
case 1: *(int8_t*)dest = *(int8_t*)jl_data_ptr(bits); break;
case 2: *(int16_t*)dest = *(int16_t*)jl_data_ptr(bits); break;
case 4: *(int32_t*)dest = *(int32_t*)jl_data_ptr(bits); break;
case 8: *(int64_t*)dest = *(int64_t*)jl_data_ptr(bits); break;
case 16: *(bits128_t*)dest = *(bits128_t*)jl_data_ptr(bits); break;
default: memcpy(dest, jl_data_ptr(bits), nb);
}
}
JL_DLLEXPORT int jl_field_index(jl_datatype_t *t, jl_sym_t *fld, int err)
{
jl_svec_t *fn = t->name->names;
for(size_t i=0; i < jl_svec_len(fn); i++) {
if (jl_svecref(fn,i) == (jl_value_t*)fld) {
return (int)i;
}
}
if (err)
jl_errorf("type %s has no field %s", jl_symbol_name(t->name->name),
jl_symbol_name(fld));
return -1;
}
JL_DLLEXPORT jl_value_t *jl_get_nth_field(jl_value_t *v, size_t i)
{
jl_datatype_t *st = (jl_datatype_t*)jl_typeof(v);
assert(i < jl_datatype_nfields(st));
size_t offs = jl_field_offset(st,i);
if (jl_field_isptr(st,i)) {
return *(jl_value_t**)((char*)v + offs);
}
return jl_new_bits(jl_field_type(st,i), (char*)v + offs);
}
JL_DLLEXPORT jl_value_t *jl_get_nth_field_checked(jl_value_t *v, size_t i)
{
jl_datatype_t *st = (jl_datatype_t*)jl_typeof(v);
if (i >= jl_datatype_nfields(st))
jl_bounds_error_int(v, i+1);
size_t offs = jl_field_offset(st,i);
if (jl_field_isptr(st,i)) {
jl_value_t *fval = *(jl_value_t**)((char*)v + offs);
if (fval == NULL)
jl_throw(jl_undefref_exception);
return fval;
}
return jl_new_bits(jl_field_type(st,i), (char*)v + offs);
}
JL_DLLEXPORT void jl_set_nth_field(jl_value_t *v, size_t i, jl_value_t *rhs)
{
jl_datatype_t *st = (jl_datatype_t*)jl_typeof(v);
size_t offs = jl_field_offset(st,i);
if (jl_field_isptr(st,i)) {
*(jl_value_t**)((char*)v + offs) = rhs;
if (rhs != NULL) jl_gc_wb(v, rhs);
}
else {
jl_assign_bits((char*)v + offs, rhs);
}
}
JL_DLLEXPORT int jl_field_isdefined(jl_value_t *v, size_t i)
{
jl_datatype_t *st = (jl_datatype_t*)jl_typeof(v);
size_t offs = jl_field_offset(st,i);
if (jl_field_isptr(st,i)) {
return *(jl_value_t**)((char*)v + offs) != NULL;
}
return 1;
}
JL_DLLEXPORT jl_value_t *jl_new_struct(jl_datatype_t *type, ...)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (type->instance != NULL) return type->instance;
va_list args;
size_t nf = jl_datatype_nfields(type);
va_start(args, type);
jl_value_t *jv = jl_gc_alloc(ptls, type->size, type);
for(size_t i=0; i < nf; i++) {
jl_set_nth_field(jv, i, va_arg(args, jl_value_t*));
}
va_end(args);
return jv;
}
JL_DLLEXPORT jl_value_t *jl_new_structv(jl_datatype_t *type, jl_value_t **args,
uint32_t na)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (type->instance != NULL) return type->instance;
size_t nf = jl_datatype_nfields(type);
jl_value_t *jv = jl_gc_alloc(ptls, type->size, type);
for(size_t i=0; i < na; i++) {
jl_set_nth_field(jv, i, args[i]);
}
for(size_t i=na; i < nf; i++) {
if (jl_field_isptr(type, i)) {
*(jl_value_t**)((char*)jl_data_ptr(jv)+jl_field_offset(type,i)) = NULL;
}
}
return jv;
}
JL_DLLEXPORT jl_value_t *jl_new_struct_uninit(jl_datatype_t *type)
{
jl_ptls_t ptls = jl_get_ptls_states();
if (type->instance != NULL) return type->instance;
size_t size = type->size;
jl_value_t *jv = jl_gc_alloc(ptls, size, type);
if (size > 0)
memset(jl_data_ptr(jv), 0, size);
return jv;
}
extern jl_value_t *jl_builtin_getfield;
jl_value_t *jl_resolve_globals(jl_value_t *expr, jl_lambda_info_t *lam)
{
if (jl_is_symbol(expr)) {
if (lam->def->module == NULL)
return expr;
return jl_module_globalref(lam->def->module, (jl_sym_t*)expr);
}
else if (jl_is_expr(expr)) {
jl_expr_t *e = (jl_expr_t*)expr;
if (jl_is_toplevel_only_expr(expr) || e->head == const_sym || e->head == copyast_sym ||
e->head == global_sym || e->head == quote_sym || e->head == inert_sym ||
e->head == line_sym || e->head == meta_sym || e->head == inbounds_sym ||
e->head == boundscheck_sym || e->head == simdloop_sym) {
}
else {
if (e->head == call_sym && jl_expr_nargs(e) == 3 && jl_is_quotenode(jl_exprarg(e,2)) &&
lam->def->module != NULL) {
// replace getfield(module_expr, :sym) with GlobalRef
jl_value_t *s = jl_fieldref(jl_exprarg(e,2),0);
jl_value_t *fe = jl_exprarg(e,0);
if (jl_is_symbol(s) && jl_is_globalref(fe)) {
jl_value_t *f = jl_static_eval(fe, NULL, lam->def->module, lam, 0, 0);
if (f == jl_builtin_getfield) {
jl_value_t *me = jl_exprarg(e,1);
if (jl_is_globalref(me) ||
(jl_is_symbol(me) && jl_binding_resolved_p(lam->def->module, (jl_sym_t*)me))) {
jl_value_t *m = jl_static_eval(me, NULL, lam->def->module, lam, 0, 0);
if (m && jl_is_module(m))
return jl_module_globalref((jl_module_t*)m, (jl_sym_t*)s);
}
}
}
}
size_t i = 0;
if (e->head == method_sym || e->head == abstracttype_sym || e->head == compositetype_sym ||
e->head == bitstype_sym || e->head == module_sym)
i++;
for(; i < jl_array_len(e->args); i++) {
jl_exprargset(e, i, jl_resolve_globals(jl_exprarg(e,i), lam));
}
}
}
return expr;
}
// copy a :lambda Expr into its LambdaInfo representation
static void jl_lambda_info_set_ast(jl_lambda_info_t *li, jl_expr_t *ast)
{
assert(jl_is_expr(ast));
jl_expr_t *bodyex = (jl_expr_t*)jl_exprarg(ast, 2);
assert(jl_is_expr(bodyex));
jl_array_t *body = bodyex->args;
li->code = (jl_value_t*)body; jl_gc_wb(li, li->code);
size_t j, n = jl_array_len(body);
jl_value_t **bd = (jl_value_t**)jl_array_data((jl_array_t*)li->code);
for(j=0; j < n; j++) {
jl_value_t *st = bd[j];
if (jl_is_expr(st) && ((jl_expr_t*)st)->head == meta_sym) {
size_t k, ins = 0, na = jl_expr_nargs(st);
jl_array_t *meta = ((jl_expr_t*)st)->args;
for(k=0; k < na; k++) {
jl_value_t *ma = jl_array_ptr_ref(meta, k);
if (ma == (jl_value_t*)pure_sym)
li->pure = 1;
else if (ma == (jl_value_t*)inline_sym)
li->inlineable = 1;
else
jl_array_ptr_set(meta, ins++, ma);
}
if (ins == 0)
bd[j] = jl_nothing;
else
jl_array_del_end(meta, na-ins);
}
}
jl_array_t *vinfo = (jl_array_t*)jl_exprarg(ast, 1);
jl_array_t *vis = (jl_array_t*)jl_array_ptr_ref(vinfo, 0);
size_t nslots = jl_array_len(vis);
jl_value_t *ssavalue_types = jl_array_ptr_ref(vinfo, 2);
assert(jl_is_long(ssavalue_types));
size_t nssavalue = jl_unbox_long(ssavalue_types);
li->slotnames = jl_alloc_vec_any(nslots);
jl_gc_wb(li, li->slotnames);
li->slottypes = jl_nothing;
li->slotflags = jl_alloc_array_1d(jl_array_uint8_type, nslots);
jl_gc_wb(li, li->slotflags);
li->ssavaluetypes = jl_box_long(nssavalue);
jl_gc_wb(li, li->ssavaluetypes);
int i;
for(i=0; i < nslots; i++) {
jl_value_t *vi = jl_array_ptr_ref(vis, i);
jl_sym_t *name = (jl_sym_t*)jl_array_ptr_ref(vi, 0);
assert(jl_is_symbol(name));
char *str = jl_symbol_name(name);
if (i > 0 && name != unused_sym) {
if (str[0] == '#') {
// convention for renamed variables: #...#original_name
char *nxt = strchr(str + 1, '#');
if (nxt)
name = jl_symbol(nxt+1);
else if (str[1] == 's') // compiler-generated temporaries, #sXXX
name = compiler_temp_sym;
}
}
jl_array_ptr_set(li->slotnames, i, name);
jl_array_uint8_set(li->slotflags, i, jl_unbox_long(jl_array_ptr_ref(vi, 2)));
}
jl_array_t *sparams = (jl_array_t*)jl_array_ptr_ref(vinfo, 3);
assert(jl_is_array(sparams));
li->sparam_syms = jl_alloc_svec_uninit(jl_array_len(sparams));
jl_gc_wb(li, li->sparam_syms);
for(i=0; i < jl_array_len(sparams); i++) {
jl_svecset(li->sparam_syms, i, jl_array_ptr_ref(sparams, i));
}
jl_array_t *args = (jl_array_t*)jl_exprarg(ast, 0);
size_t narg = jl_array_len(args);
li->nargs = narg;
li->isva = narg > 0 && jl_is_rest_arg(jl_array_ptr_ref(args, narg - 1));
}
JL_DLLEXPORT jl_lambda_info_t *jl_new_lambda_info_uninit(void)
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_lambda_info_t *li =
(jl_lambda_info_t*)jl_gc_alloc(ptls, sizeof(jl_lambda_info_t),
jl_lambda_info_type);
li->code = NULL;
li->slotnames = NULL;
li->slotflags = NULL;
li->slottypes = NULL;
li->ssavaluetypes = NULL;
li->rettype = (jl_value_t*)jl_any_type;
li->sparam_syms = jl_emptysvec;
li->sparam_vals = jl_emptysvec;
li->fptr = NULL;
li->jlcall_api = 0;
li->compile_traced = 0;
li->functionObjectsDecls.functionObject = NULL;
li->functionObjectsDecls.specFunctionObject = NULL;
li->specTypes = NULL;
li->unspecialized_ducttape = NULL;
li->inferred = 0;
li->inInference = 0;
li->inCompile = 0;
li->def = NULL;
li->constval = NULL;
li->pure = 0;
li->inlineable = 0;
return li;
}
JL_DLLEXPORT jl_lambda_info_t *jl_new_lambda_info_from_ast(jl_expr_t *ast)
{
jl_lambda_info_t *li=NULL;
JL_GC_PUSH1(&li);
li = jl_new_lambda_info_uninit();
jl_lambda_info_set_ast(li, ast);
JL_GC_POP();
return li;
}
// invoke (compiling if necessary) the jlcall function pointer for a method template
STATIC_INLINE jl_value_t *jl_call_staged(jl_svec_t *sparam_vals, jl_lambda_info_t *meth,
jl_value_t **args, uint32_t nargs)
{
if (__unlikely(meth->fptr == NULL)) {
jl_compile_linfo(meth);
jl_generate_fptr(meth);
}
assert(jl_svec_len(meth->sparam_syms) == jl_svec_len(sparam_vals));
if (__likely(meth->jlcall_api == 0))
return meth->fptr(args[0], &args[1], nargs-1);
else
return ((jl_fptr_sparam_t)meth->fptr)(sparam_vals, args[0], &args[1], nargs-1);
}
static jl_lambda_info_t *jl_instantiate_staged(jl_method_t *generator, jl_tupletype_t *tt, jl_svec_t *env)
{
JL_TIMING(STAGED_FUNCTION);
size_t i, l;
jl_expr_t *ex = NULL;
jl_value_t *linenum = NULL;
jl_svec_t *sparam_vals = env;
jl_lambda_info_t *func = generator->lambda_template;
JL_GC_PUSH4(&ex, &linenum, &sparam_vals, &func);
int last_in = in_pure_callback;
assert(jl_svec_len(func->sparam_syms) == jl_svec_len(sparam_vals));
JL_TRY {
in_pure_callback = 1;
ex = jl_exprn(lambda_sym, 2);
int nargs = func->nargs;
jl_array_t *argnames = jl_alloc_vec_any(nargs);
jl_array_ptr_set(ex->args, 0, argnames);
for (i = 0; i < nargs; i++)
jl_array_ptr_set(argnames, i, jl_array_ptr_ref(func->slotnames, i));
jl_expr_t *scopeblock = jl_exprn(jl_symbol("scope-block"), 1);
jl_array_ptr_set(ex->args, 1, scopeblock);
jl_expr_t *body = jl_exprn(jl_symbol("block"), 2);
jl_array_ptr_set(((jl_expr_t*)jl_exprarg(ex,1))->args, 0, body);
linenum = jl_box_long(generator->line);
jl_value_t *linenode = jl_new_struct(jl_linenumbernode_type, linenum);
jl_array_ptr_set(body->args, 0, linenode);
// invoke code generator
assert(jl_nparams(tt) == jl_array_len(argnames) ||
(func->isva && (jl_nparams(tt) >= jl_array_len(argnames) - 1)));
jl_array_ptr_set(body->args, 1,
jl_call_staged(sparam_vals, func, jl_svec_data(tt->parameters), jl_nparams(tt)));
if (func->sparam_syms != jl_emptysvec) {
// mark this function as having the same static parameters as the generator
size_t i, nsp = jl_svec_len(func->sparam_syms);
jl_expr_t *newast = jl_exprn(jl_symbol("with-static-parameters"), nsp + 1);
jl_exprarg(newast, 0) = (jl_value_t*)ex;
// (with-static-parameters func_expr sp_1 sp_2 ...)
for (i = 0; i < nsp; i++)
jl_exprarg(newast, i+1) = jl_svecref(func->sparam_syms, i);
ex = newast;
}
// need to eval macros in the right module, but not give a warning for the `eval` call unless that results in a call to `eval`
func = (jl_lambda_info_t*)jl_toplevel_eval_in_warn(generator->module, (jl_value_t*)ex, 1);
// finish marking this as a specialization of the generator
func->isva = generator->lambda_template->isva;
func->def = generator;
jl_gc_wb(func, generator);
func->sparam_vals = env;
jl_gc_wb(func, env);
func->specTypes = tt;
jl_gc_wb(func, tt);
jl_array_t *stmts = (jl_array_t*)func->code;
for(i = 0, l = jl_array_len(stmts); i < l; i++) {
jl_array_ptr_set(stmts, i, jl_resolve_globals(jl_array_ptr_ref(stmts, i), func));
}
in_pure_callback = last_in;
}
JL_CATCH {
in_pure_callback = last_in;
jl_rethrow();
}
JL_GC_POP();
return func;
}
static jl_lambda_info_t *jl_copy_lambda(jl_lambda_info_t *linfo)
{
assert(linfo->sparam_vals == jl_emptysvec);
jl_lambda_info_t *new_linfo = jl_new_lambda_info_uninit();
new_linfo->code = linfo->code;
new_linfo->slotnames = linfo->slotnames;
new_linfo->slottypes = linfo->slottypes;
new_linfo->slotflags = linfo->slotflags;
new_linfo->ssavaluetypes = linfo->ssavaluetypes;
new_linfo->sparam_syms = linfo->sparam_syms;
new_linfo->sparam_vals = linfo->sparam_vals;
new_linfo->pure = linfo->pure;
new_linfo->inlineable = linfo->inlineable;
new_linfo->nargs = linfo->nargs;
new_linfo->isva = linfo->isva;
new_linfo->rettype = linfo->rettype;
new_linfo->def = linfo->def;
new_linfo->constval = linfo->constval;
return new_linfo;
}
// return a new lambda-info that has some extra static parameters merged in
JL_DLLEXPORT jl_lambda_info_t *jl_get_specialized(jl_method_t *m, jl_tupletype_t *types, jl_svec_t *sp, int allow_exec)
{
jl_lambda_info_t *linfo = m->lambda_template;
jl_lambda_info_t *new_linfo;
assert(jl_svec_len(linfo->sparam_syms) == jl_svec_len(sp) || sp == jl_emptysvec);
if (!m->isstaged) {
new_linfo = jl_copy_lambda(linfo);
new_linfo->specTypes = types;
new_linfo->def = m;
new_linfo->sparam_vals = sp;
}
else if (!allow_exec) {
new_linfo = jl_copy_lambda(linfo);
new_linfo->specTypes = types;
new_linfo->def = m;
new_linfo->sparam_vals = sp;
jl_set_lambda_code_null(new_linfo);
}
else {
new_linfo = jl_instantiate_staged(m, types, sp);
}
return new_linfo;
}
JL_DLLEXPORT void jl_method_init_properties(jl_method_t *m)
{
jl_lambda_info_t *li = m->lambda_template;
size_t j, n = jl_array_len((jl_array_t*)li->code);
jl_value_t **body = (jl_value_t**)jl_array_data((jl_array_t*)li->code);
for(j=0; j < n; j++) {
jl_value_t *st = body[j];
if (jl_is_expr(st) && ((jl_expr_t*)st)->head == line_sym) {
m->line = jl_unbox_long(jl_exprarg(st, 0));
m->file = (jl_sym_t*)jl_exprarg(st, 1);
body[j] = jl_nothing;
break;
}
}
int i;
uint8_t called=0;
for(i=1; i < li->nargs && i <= 8; i++) {
jl_value_t *ai = jl_array_ptr_ref(li->slotnames,i);
if (ai == (jl_value_t*)unused_sym) continue;
if (jl_array_uint8_ref(li->slotflags,i)&64)
called |= (1<<(i-1));
}
m->called = called;
}
JL_DLLEXPORT jl_method_t *jl_new_method_uninit(void)
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_method_t *m =
(jl_method_t*)jl_gc_alloc(ptls, sizeof(jl_method_t), jl_method_type);
m->specializations.unknown = jl_nothing;
m->sig = NULL;
m->tvars = NULL;
m->ambig = jl_nothing;
m->roots = NULL;
m->module = ptls->current_module;
m->lambda_template = NULL;
m->name = NULL;
m->file = empty_sym;
m->line = 0;
m->called = 0xff;
m->invokes.unknown = NULL;
m->isstaged = 0;
m->needs_sparam_vals_ducttape = 2;
m->traced = 0;
JL_MUTEX_INIT(&m->writelock);
return m;
}
jl_method_t *jl_new_method(jl_lambda_info_t *definition, jl_sym_t *name, jl_tupletype_t *sig, jl_svec_t *tvars, int isstaged)
{
assert(definition->code);
jl_method_t *m = jl_new_method_uninit();
m->isstaged = isstaged;
m->name = name;
m->sig = sig;
if (jl_svec_len(tvars) == 1)
tvars = (jl_svec_t*)jl_svecref(tvars, 0);
m->tvars = tvars;
JL_GC_PUSH1(&m);
// the front end may add this lambda to multiple methods; make a copy if so
jl_method_t *oldm = definition->def;
int reused = oldm != NULL;
if (reused)
definition = jl_copy_lambda(definition);
definition->specTypes = isstaged ? jl_anytuple_type : sig;
m->lambda_template = definition;
jl_gc_wb(m, definition);
definition->def = m;
jl_gc_wb(definition, m);
if (reused) {
m->file = oldm->file;
m->line = oldm->line;
m->called = oldm->called;
}
else {
jl_array_t *stmts = (jl_array_t*)definition->code;
int i, l;
for(i = 0, l = jl_array_len(stmts); i < l; i++) {
jl_array_ptr_set(stmts, i, jl_resolve_globals(jl_array_ptr_ref(stmts, i), definition));
}
jl_method_init_properties(m);
}
JL_GC_POP();
return m;
}
// symbols --------------------------------------------------------------------
static jl_sym_t *volatile symtab = NULL;
static uintptr_t hash_symbol(const char *str, size_t len)
{
return memhash(str, len) ^ ~(uintptr_t)0/3*2;
}
static size_t symbol_nbytes(size_t len)
{
return (sizeof(jl_taggedvalue_t) + sizeof(jl_sym_t) + len + 1 + 7) & -8;
}
static jl_sym_t *mk_symbol(const char *str, size_t len)
{
jl_sym_t *sym;
size_t nb = symbol_nbytes(len);
jl_taggedvalue_t *tag = (jl_taggedvalue_t*)jl_gc_perm_alloc_nolock(nb);
sym = (jl_sym_t*)jl_valueof(tag);
// set to old marked since we don't need write barrier on it.
tag->header = ((uintptr_t)jl_sym_type) | GC_OLD_MARKED;
sym->left = sym->right = NULL;
sym->hash = hash_symbol(str, len);
memcpy(jl_symbol_name(sym), str, len);
jl_symbol_name(sym)[len] = 0;
return sym;
}
static jl_sym_t *symtab_lookup(jl_sym_t *volatile *ptree, const char *str,
size_t len, jl_sym_t *volatile **slot)
{
jl_sym_t *node = jl_atomic_load_acquire(ptree);
uintptr_t h = hash_symbol(str, len);
// Tree nodes sorted by major key of (int(hash)) and minor key of (str).
while (node != NULL) {
intptr_t x = (intptr_t)(h - node->hash);
if (x == 0) {
x = strncmp(str, jl_symbol_name(node), len);
if (x == 0 && jl_symbol_name(node)[len] == 0) {
if (slot != NULL)
*slot = ptree;
return node;
}
}
if (x < 0)
ptree = &node->left;
else
ptree = &node->right;
node = jl_atomic_load_acquire(ptree);
}
if (slot != NULL)
*slot = ptree;
return node;
}
static jl_sym_t *_jl_symbol(const char *str, size_t len)
{
jl_sym_t *volatile *slot;
jl_sym_t *node = symtab_lookup(&symtab, str, len, &slot);
if (node == NULL) {
JL_LOCK_NOGC(&gc_perm_lock);
// Someone might have updated it, check and look up again
if (*slot != NULL && (node = symtab_lookup(slot, str, len, &slot))) {
JL_UNLOCK_NOGC(&gc_perm_lock);
return node;
}
node = mk_symbol(str, len);
jl_atomic_store_release(slot, node);
JL_UNLOCK_NOGC(&gc_perm_lock);
}
return node;
}
JL_DLLEXPORT jl_sym_t *jl_symbol(const char *str)
{
return _jl_symbol(str, strlen(str));
}
JL_DLLEXPORT jl_sym_t *jl_symbol_lookup(const char *str)
{
return symtab_lookup(&symtab, str, strlen(str), NULL);
}
JL_DLLEXPORT jl_sym_t *jl_symbol_n(const char *str, int32_t len)
{
if (memchr(str, 0, len))
jl_exceptionf(jl_argumenterror_type, "Symbol name may not contain \\0");
return _jl_symbol(str, len);
}
JL_DLLEXPORT jl_sym_t *jl_get_root_symbol(void)
{
return symtab;
}
static uint32_t gs_ctr = 0; // TODO: per-thread
uint32_t jl_get_gs_ctr(void) { return gs_ctr; }
void jl_set_gs_ctr(uint32_t ctr) { gs_ctr = ctr; }
JL_DLLEXPORT jl_sym_t *jl_gensym(void)
{
char name[16];
char *n;
n = uint2str(&name[2], sizeof(name)-2, gs_ctr, 10);
*(--n) = '#'; *(--n) = '#';
gs_ctr++;
return jl_symbol(n);
}
JL_DLLEXPORT jl_sym_t *jl_tagged_gensym(const char *str, int32_t len)
{
char gs_name[14];
if (memchr(str, 0, len))
jl_exceptionf(jl_argumenterror_type, "Symbol name may not contain \\0");
char *name = (char*) (len >= 256 ? malloc(sizeof(gs_name)+len+3) :
alloca(sizeof(gs_name)+len+3));
char *n;
name[0] = '#'; name[1] = '#'; name[2+len] = '#';
memcpy(name+2, str, len);
n = uint2str(gs_name, sizeof(gs_name), gs_ctr, 10);
memcpy(name+3+len, n, sizeof(gs_name)-(n-gs_name));
gs_ctr++;
jl_sym_t *sym = _jl_symbol(name, len+3+sizeof(gs_name)-(n-gs_name)-1);
if (len >= 256) free(name);
return sym;
}
// allocating types -----------------------------------------------------------
jl_sym_t *jl_demangle_typename(jl_sym_t *s)
{
char *n = jl_symbol_name(s);
if (n[0] != '#')
return s;
char *end = strrchr(n, '#');
int32_t len;
if (end == n || end == n+1)
len = strlen(n) - 1;
else
len = (end-n) - 1;
return jl_symbol_n(&n[1], len);
}
JL_DLLEXPORT jl_methtable_t *jl_new_method_table(jl_sym_t *name, jl_module_t *module)
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_methtable_t *mt =
(jl_methtable_t*)jl_gc_alloc(ptls, sizeof(jl_methtable_t),
jl_methtable_type);
mt->name = jl_demangle_typename(name);
mt->module = module;
mt->defs.unknown = jl_nothing;
mt->cache.unknown = jl_nothing;
mt->max_args = 0;
mt->kwsorter = NULL;
JL_MUTEX_INIT(&mt->writelock);
return mt;
}
JL_DLLEXPORT jl_typename_t *jl_new_typename_in(jl_sym_t *name, jl_module_t *module)
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_typename_t *tn =
(jl_typename_t*)jl_gc_alloc(ptls, sizeof(jl_typename_t),
jl_typename_type);
tn->name = name;
tn->module = module;
tn->primary = NULL;
tn->cache = jl_emptysvec;
tn->linearcache = jl_emptysvec;
tn->names = NULL;
tn->hash = bitmix(bitmix(module ? module->uuid : 0, name->hash), 0xa1ada1da);
tn->mt = NULL;
JL_GC_PUSH1(&tn);
tn->mt = NULL;
JL_GC_POP();
return tn;
}
JL_DLLEXPORT jl_typename_t *jl_new_typename(jl_sym_t *name)
{
jl_ptls_t ptls = jl_get_ptls_states();
return jl_new_typename_in(name, ptls->current_module);
}
jl_datatype_t *jl_new_abstracttype(jl_value_t *name, jl_datatype_t *super,
jl_svec_t *parameters)
{
jl_datatype_t *dt = jl_new_datatype((jl_sym_t*)name, super, parameters, jl_emptysvec, jl_emptysvec, 1, 0, 0);
return dt;
}
jl_datatype_t *jl_new_uninitialized_datatype(void)
{
jl_ptls_t ptls = jl_get_ptls_states();
jl_datatype_t *t = (jl_datatype_t*)jl_gc_alloc(ptls, sizeof(jl_datatype_t), jl_datatype_type);
t->depth = 0;
t->hastypevars = 0;
t->haswildcard = 0;
t->isleaftype = 1;
t->layout = NULL;
return t;
}
static jl_datatype_layout_t *jl_get_layout(uint32_t nfields,
uint32_t alignment,
int haspadding,
jl_fielddesc32_t desc[])
{
// compute the smallest fielddesc type that can hold the layout description
int fielddesc_type = 0;
if (nfields > 0) {
uint32_t max_size = 0;
uint32_t max_offset = desc[nfields - 1].offset;
for (size_t i = 0; i < nfields; i++) {
if (desc[i].size > max_size)
max_size = desc[i].size;
}
jl_fielddesc8_t maxdesc8 = { 0, max_size, max_offset };
jl_fielddesc16_t maxdesc16 = { 0, max_size, max_offset };
jl_fielddesc32_t maxdesc32 = { 0, max_size, max_offset };
if (maxdesc8.size != max_size || maxdesc8.offset != max_offset) {
fielddesc_type = 1;
if (maxdesc16.size != max_size || maxdesc16.offset != max_offset) {
fielddesc_type = 2;
if (maxdesc32.size != max_size || maxdesc32.offset != max_offset) {
assert(0); // should have been verified by caller
}
}
}
}
// allocate a new descriptor
uint32_t fielddesc_size = jl_fielddesc_size(fielddesc_type);
jl_datatype_layout_t *flddesc =
(jl_datatype_layout_t*)jl_gc_perm_alloc(sizeof(jl_datatype_layout_t) + nfields * fielddesc_size);
flddesc->nfields = nfields;
flddesc->alignment = alignment;
flddesc->haspadding = haspadding;
flddesc->fielddesc_type = fielddesc_type;
// fill out the fields of the new descriptor
jl_fielddesc8_t* desc8 = (jl_fielddesc8_t*)jl_dt_layout_fields(flddesc);
jl_fielddesc16_t* desc16 = (jl_fielddesc16_t*)jl_dt_layout_fields(flddesc);
jl_fielddesc32_t* desc32 = (jl_fielddesc32_t*)jl_dt_layout_fields(flddesc);
int ptrfree = 1;
for (size_t i = 0; i < nfields; i++) {
if (fielddesc_type == 0) {
desc8[i].offset = desc[i].offset;
desc8[i].size = desc[i].size;
desc8[i].isptr = desc[i].isptr;
}
else if (fielddesc_type == 1) {
desc16[i].offset = desc[i].offset;
desc16[i].size = desc[i].size;
desc16[i].isptr = desc[i].isptr;
}
else {
desc32[i].offset = desc[i].offset;
desc32[i].size = desc[i].size;
desc32[i].isptr = desc[i].isptr;
}
if (desc[i].isptr)
ptrfree = 0;
}
flddesc->pointerfree = ptrfree;
return flddesc;
}
// Determine if homogeneous tuple with fields of type t will have
// a special alignment beyond normal Julia rules.
// Return special alignment if one exists, 0 if normal alignment rules hold.
// A non-zero result *must* match the LLVM rules for a vector type <nfields x t>.
// For sake of Ahead-Of-Time (AOT) compilation, this routine has to work
// without LLVM being available.
unsigned jl_special_vector_alignment(size_t nfields, jl_value_t *t)
{
if (!jl_is_vecelement_type(t))
return 0;
// LLVM 3.7 and 3.8 either crash or generate wrong code for many
// SIMD vector sizes N. It seems the rule is that N can have at
// most 2 non-zero bits. (This is true at least for N<=100.) See
// also <https://llvm.org/bugs/show_bug.cgi?id=27708>.
size_t mask = nfields;
// See e.g.
// <https://graphics.stanford.edu/%7Eseander/bithacks.html> for an
// explanation of this bit-counting algorithm.
mask &= mask-1; // clear least-significant 1 if present
mask &= mask-1; // clear another 1
if (mask)
return 0; // nfields has more than two 1s
assert(jl_datatype_nfields(t)==1);
jl_value_t *ty = jl_field_type(t, 0);
if (!jl_is_bitstype(ty))
// LLVM requires that a vector element be a primitive type.
// LLVM allows pointer types as vector elements, but until a
// motivating use case comes up for Julia, we reject pointers.
return 0;
size_t elsz = jl_datatype_size(ty);
if (elsz>8 || (1<<elsz & 0x116) == 0)
// Element size is not 1, 2, 4, or 8.
return 0;
size_t size = nfields*elsz;
// LLVM's alignment rule for vectors seems to be to round up to
// a power of two, even if that's overkill for the target hardware.
size_t alignment=1;
for( ; size>alignment; alignment*=2 )
continue;
return alignment;
}
void jl_compute_field_offsets(jl_datatype_t *st)
{
size_t sz = 0, alignm = 1;
int homogeneous = 1;
jl_value_t *lastty = NULL;
uint64_t max_offset = (((uint64_t)1) << 32) - 1;
uint64_t max_size = max_offset >> 1;
uint32_t nfields = jl_svec_len(st->types);
jl_fielddesc32_t* desc = (jl_fielddesc32_t*) alloca(nfields * sizeof(jl_fielddesc32_t));
int haspadding = 0;
assert(st->name == jl_tuple_typename ||
st == jl_sym_type ||
st == jl_simplevector_type ||
nfields != 0);
for (size_t i = 0; i < nfields; i++) {
jl_value_t *ty = jl_field_type(st, i);
size_t fsz, al;
if (jl_isbits(ty) && jl_is_leaf_type(ty) && ((jl_datatype_t*)ty)->layout) {
fsz = jl_datatype_size(ty);
// Should never happen
if (__unlikely(fsz > max_size))
jl_throw(jl_overflow_exception);
al = ((jl_datatype_t*)ty)->layout->alignment;
desc[i].isptr = 0;
if (((jl_datatype_t*)ty)->layout->haspadding)
haspadding = 1;
}
else {
fsz = sizeof(void*);
if (fsz > MAX_ALIGN)
fsz = MAX_ALIGN;
al = fsz;