зеркало из https://github.com/github/ruby.git
* marshal.c (struct {dump,load}_arg): manage with dfree, instead
of using local variable which may be moved by context switch. [ruby-dev:39425] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25230 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu
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Коммит
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@ -1,3 +1,9 @@
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Sun Oct 4 19:30:54 2009 Nobuyoshi Nakada <nobu@ruby-lang.org>
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* marshal.c (struct {dump,load}_arg): manage with dfree, instead
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of using local variable which may be moved by context switch.
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[ruby-dev:39425]
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Sun Oct 4 15:00:32 2009 Nobuyoshi Nakada <nobu@ruby-lang.org>
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* pack.c (NATINT_LEN, pack_pack): suppressed warnings.
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174
marshal.c
174
marshal.c
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@ -132,14 +132,12 @@ rb_marshal_define_compat(VALUE newclass, VALUE oldclass, VALUE (*dumper)(VALUE),
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}
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struct dump_arg {
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VALUE obj;
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VALUE str, dest;
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st_table *symbols;
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st_table *data;
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int taint;
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int untrust;
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st_table *compat_tbl;
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VALUE wrapper;
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st_table *encodings;
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};
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@ -152,12 +150,14 @@ struct dump_call_arg {
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static void
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check_dump_arg(struct dump_arg *arg, ID sym)
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{
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if (!DATA_PTR(arg->wrapper)) {
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if (!arg->symbols) {
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rb_raise(rb_eRuntimeError, "Marshal.dump reentered at %s",
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rb_id2name(sym));
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}
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}
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static void clear_dump_arg(struct dump_arg *arg);
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static void
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mark_dump_arg(void *ptr)
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{
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@ -168,6 +168,24 @@ mark_dump_arg(void *ptr)
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rb_mark_hash(p->compat_tbl);
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}
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static void
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free_dump_arg(void *ptr)
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{
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clear_dump_arg(ptr);
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xfree(ptr);
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}
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static size_t
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memsize_dump_arg(const void *ptr)
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{
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return ptr ? sizeof(struct dump_arg) : 0;
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}
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static const rb_data_type_t dump_arg_data = {
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"dump_arg",
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mark_dump_arg, free_dump_arg, memsize_dump_arg
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};
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static const char *
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must_not_be_anonymous(const char *type, VALUE path)
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{
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@ -825,34 +843,24 @@ w_object(VALUE obj, struct dump_arg *arg, int limit)
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}
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}
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static VALUE
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dump(struct dump_call_arg *arg)
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static void
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clear_dump_arg(struct dump_arg *arg)
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{
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w_object(arg->obj, arg->arg, arg->limit);
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if (arg->arg->dest) {
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rb_io_write(arg->arg->dest, arg->arg->str);
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rb_str_resize(arg->arg->str, 0);
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}
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return 0;
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}
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static VALUE
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dump_ensure(struct dump_arg *arg)
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{
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if (!DATA_PTR(arg->wrapper)) return 0;
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if (!arg->symbols) return;
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st_free_table(arg->symbols);
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arg->symbols = 0;
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st_free_table(arg->data);
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st_free_table(arg->compat_tbl);
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if (arg->encodings) st_free_table(arg->encodings);
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DATA_PTR(arg->wrapper) = 0;
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arg->wrapper = 0;
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if (arg->encodings) {
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st_free_table(arg->encodings);
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arg->encodings = 0;
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}
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if (arg->taint) {
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OBJ_TAINT(arg->str);
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}
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if (arg->untrust) {
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OBJ_UNTRUST(arg->str);
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}
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return 0;
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}
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/*
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@ -886,8 +894,8 @@ marshal_dump(int argc, VALUE *argv)
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{
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VALUE obj, port, a1, a2;
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int limit = -1;
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struct dump_arg arg;
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struct dump_call_arg c_arg;
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struct dump_arg *arg;
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VALUE wrapper;
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port = Qnil;
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rb_scan_args(argc, argv, "12", &obj, &a1, &a2);
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@ -901,40 +909,41 @@ marshal_dump(int argc, VALUE *argv)
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else if (NIL_P(a1)) goto type_error;
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else port = a1;
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}
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arg.dest = 0;
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arg.symbols = st_init_numtable();
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arg.data = st_init_numtable();
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arg.taint = FALSE;
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arg.untrust = FALSE;
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arg.compat_tbl = st_init_numtable();
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arg.encodings = 0;
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arg.str = rb_str_buf_new(0);
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RBASIC(arg.str)->klass = 0;
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arg.wrapper = Data_Wrap_Struct(rb_cData, mark_dump_arg, 0, &arg);
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wrapper = TypedData_Make_Struct(rb_cData, struct dump_arg, &dump_arg_data, arg);
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arg->dest = 0;
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arg->symbols = st_init_numtable();
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arg->data = st_init_numtable();
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arg->taint = FALSE;
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arg->untrust = FALSE;
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arg->compat_tbl = st_init_numtable();
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arg->encodings = 0;
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arg->str = rb_str_tmp_new(0);
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if (!NIL_P(port)) {
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if (!rb_respond_to(port, s_write)) {
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type_error:
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rb_raise(rb_eTypeError, "instance of IO needed");
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}
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arg.dest = port;
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arg->dest = port;
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if (rb_respond_to(port, s_binmode)) {
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rb_funcall2(port, s_binmode, 0, 0);
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check_dump_arg(&arg, s_binmode);
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check_dump_arg(arg, s_binmode);
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}
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}
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else {
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port = arg.str;
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port = arg->str;
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}
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c_arg.obj = obj;
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c_arg.arg = &arg;
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c_arg.limit = limit;
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w_byte(MARSHAL_MAJOR, arg);
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w_byte(MARSHAL_MINOR, arg);
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w_byte(MARSHAL_MAJOR, &arg);
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w_byte(MARSHAL_MINOR, &arg);
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rb_ensure(dump, (VALUE)&c_arg, dump_ensure, (VALUE)&arg);
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RBASIC(arg.str)->klass = rb_cString;
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w_object(obj, arg, limit);
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if (arg->dest) {
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rb_io_write(arg->dest, arg->str);
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rb_str_resize(arg->str, 0);
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}
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RBASIC(arg->str)->klass = rb_cString;
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clear_dump_arg(arg);
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RB_GC_GUARD(wrapper);
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return port;
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}
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@ -948,18 +957,19 @@ struct load_arg {
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int taint;
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int untrust;
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st_table *compat_tbl;
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VALUE wrapper;
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};
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static void
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check_load_arg(struct load_arg *arg, ID sym)
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{
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if (!DATA_PTR(arg->wrapper)) {
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if (!arg->symbols) {
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rb_raise(rb_eRuntimeError, "Marshal.load reentered at %s",
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rb_id2name(sym));
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}
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}
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static void clear_load_arg(struct load_arg *arg);
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static void
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mark_load_arg(void *ptr)
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{
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@ -970,6 +980,24 @@ mark_load_arg(void *ptr)
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rb_mark_hash(p->compat_tbl);
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}
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static void
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free_load_arg(void *ptr)
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{
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clear_load_arg(ptr);
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xfree(ptr);
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}
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static size_t
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memsize_load_arg(const void *ptr)
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{
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return ptr ? sizeof(struct load_arg) : 0;
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}
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static const rb_data_type_t load_arg_data = {
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"load_arg",
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mark_load_arg, free_load_arg, memsize_load_arg
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};
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static VALUE r_entry(VALUE v, struct load_arg *arg);
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static VALUE r_object(struct load_arg *arg);
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static ID r_symbol(struct load_arg *arg);
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@ -1679,22 +1707,14 @@ r_object(struct load_arg *arg)
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return r_object0(arg, 0, Qnil);
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}
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static VALUE
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load(struct load_arg *arg)
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static void
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clear_load_arg(struct load_arg *arg)
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{
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return r_object(arg);
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}
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static VALUE
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load_ensure(struct load_arg *arg)
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{
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if (!DATA_PTR(arg->wrapper)) return 0;
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if (!arg->symbols) return;
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st_free_table(arg->symbols);
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arg->symbols = 0;
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st_free_table(arg->data);
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st_free_table(arg->compat_tbl);
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DATA_PTR(arg->wrapper) = 0;
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arg->wrapper = 0;
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return 0;
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}
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/*
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@ -1712,37 +1732,39 @@ static VALUE
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marshal_load(int argc, VALUE *argv)
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{
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VALUE port, proc;
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int major, minor;
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VALUE v;
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struct load_arg arg;
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int major, minor, taint = FALSE;
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VALUE v, wrapper;
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struct load_arg *arg;
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rb_scan_args(argc, argv, "11", &port, &proc);
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v = rb_check_string_type(port);
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if (!NIL_P(v)) {
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arg.taint = OBJ_TAINTED(port); /* original taintedness */
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taint = OBJ_TAINTED(port); /* original taintedness */
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port = v;
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}
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else if (rb_respond_to(port, s_getbyte) && rb_respond_to(port, s_read)) {
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if (rb_respond_to(port, s_binmode)) {
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rb_funcall2(port, s_binmode, 0, 0);
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}
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arg.taint = TRUE;
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taint = TRUE;
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}
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else {
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rb_raise(rb_eTypeError, "instance of IO needed");
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}
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arg.untrust = OBJ_UNTRUSTED(port);
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arg.src = port;
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arg.offset = 0;
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arg.symbols = st_init_numtable();
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arg.data = st_init_numtable();
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arg.compat_tbl = st_init_numtable();
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arg.proc = 0;
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arg.wrapper = Data_Wrap_Struct(rb_cData, mark_load_arg, 0, &arg);
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wrapper = TypedData_Make_Struct(rb_cData, struct load_arg, &load_arg_data, arg);
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arg->taint = taint;
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arg->untrust = OBJ_UNTRUSTED(port);
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arg->src = port;
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arg->offset = 0;
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arg->symbols = st_init_numtable();
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arg->data = st_init_numtable();
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arg->compat_tbl = st_init_numtable();
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arg->proc = 0;
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major = r_byte(&arg);
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minor = r_byte(&arg);
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major = r_byte(arg);
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minor = r_byte(arg);
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if (major != MARSHAL_MAJOR || minor > MARSHAL_MINOR) {
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clear_load_arg(arg);
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rb_raise(rb_eTypeError, "incompatible marshal file format (can't be read)\n\
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\tformat version %d.%d required; %d.%d given",
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MARSHAL_MAJOR, MARSHAL_MINOR, major, minor);
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@ -1753,8 +1775,10 @@ marshal_load(int argc, VALUE *argv)
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MARSHAL_MAJOR, MARSHAL_MINOR, major, minor);
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}
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if (!NIL_P(proc)) arg.proc = proc;
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v = rb_ensure(load, (VALUE)&arg, load_ensure, (VALUE)&arg);
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if (!NIL_P(proc)) arg->proc = proc;
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v = r_object(arg);
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clear_load_arg(arg);
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RB_GC_GUARD(wrapper);
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return v;
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}
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@ -212,4 +212,45 @@ class TestMarshal < Test::Unit::TestCase
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c = [/#{a}/, /#{b}/]
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assert_equal(c, Marshal.load(Marshal.dump(c)))
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end
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class DumpTest
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def marshal_dump
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@@block.call(:marshal_dump)
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end
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def dump_each(&block)
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@@block = block
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Marshal.dump(self)
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end
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end
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class LoadTest
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def marshal_dump
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nil
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end
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def marshal_load(obj)
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@@block.call(:marshal_load)
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end
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def self.load_each(m, &block)
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@@block = block
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Marshal.load(m)
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end
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end
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def test_context_switch
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o = DumpTest.new
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e = o.enum_for(:dump_each)
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assert_equal(:marshal_dump, e.next)
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GC.start
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assert(true, '[ruby-dev:39425]')
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assert_raise(StopIteration) {e.next}
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o = LoadTest.new
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m = Marshal.dump(o)
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e = LoadTest.enum_for(:load_each, m)
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assert_equal(:marshal_load, e.next)
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GC.start
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assert(true, '[ruby-dev:39425]')
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assert_raise(StopIteration) {e.next}
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end
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end
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