VALUE
rb_require_safe(VALUE fname, int safe)
{
volatile VALUE result = Qnil;
rb_thread_t *th = GET_THREAD();
volatile VALUE errinfo = th->errinfo;
int state;
struct {
int safe;
} volatile saved;
char *volatile ftptr = 0;
PUSH_TAG();
saved.safe = rb_safe_level();
if ((state = EXEC_TAG()) == 0) {
VALUE path;
long handle;
int found;
rb_set_safe_level_force(safe);
FilePathValue(fname);
rb_set_safe_level_force(0);
found = search_required(fname, &path, safe);
if (found) {
if (!path || !(ftptr = load_lock(RSTRING_PTR(path)))) {
result = Qfalse;
}
else {
switch (found) {
case 'r':
rb_load_internal(path, 0);
break;
case 's':
handle = (long)rb_vm_call_cfunc(rb_vm_top_self(), load_ext,
path, 0, path);
rb_ary_push(ruby_dln_librefs, LONG2NUM(handle));
break;
}
rb_provide_feature(path);
result = Qtrue;
}
}
}
POP_TAG();
load_unlock(ftptr, !state);
rb_set_safe_level_force(saved.safe);
if (state) {
JUMP_TAG(state);
}
if (NIL_P(result)) {
load_failed(fname);
}
th->errinfo = errinfo;
return result;
}
RUBY_FUNC_EXPORTED void
ruby_init_ext(const char *name, void (*init)(void))
{
if (load_lock(name)) {
rb_vm_call_cfunc(rb_vm_top_self(), init_ext_call, (VALUE)init,
0, rb_str_new2(name));
rb_provide(name);
load_unlock(name, 1);
}
}
/*
* returns
* 0: if already loaded (false)
* 1: successfully loaded (true)
* <0: not found (LoadError)
* >1: exception
*/
int
rb_require_internal(VALUE fname, int safe)
{
volatile int result = -1;
rb_thread_t *th = GET_THREAD();
volatile VALUE errinfo = th->errinfo;
int state;
struct {
int safe;
} volatile saved;
char *volatile ftptr = 0;
if (RUBY_DTRACE_REQUIRE_ENTRY_ENABLED()) {
RUBY_DTRACE_REQUIRE_ENTRY(StringValuePtr(fname),
rb_sourcefile(),
rb_sourceline());
}
TH_PUSH_TAG(th);
saved.safe = rb_safe_level();
if ((state = EXEC_TAG()) == 0) {
VALUE path;
long handle;
int found;
rb_set_safe_level_force(safe);
FilePathValue(fname);
rb_set_safe_level_force(0);
if (RUBY_DTRACE_FIND_REQUIRE_ENTRY_ENABLED()) {
RUBY_DTRACE_FIND_REQUIRE_ENTRY(StringValuePtr(fname),
rb_sourcefile(),
rb_sourceline());
}
path = rb_str_encode_ospath(fname);
found = search_required(path, &path, safe);
if (RUBY_DTRACE_FIND_REQUIRE_RETURN_ENABLED()) {
RUBY_DTRACE_FIND_REQUIRE_RETURN(StringValuePtr(fname),
rb_sourcefile(),
rb_sourceline());
}
if (found) {
if (!path || !(ftptr = load_lock(RSTRING_PTR(path)))) {
result = 0;
}
else if (!*ftptr) {
rb_provide_feature(path);
result = TAG_RETURN;
}
else {
switch (found) {
case 'r':
rb_load_internal(path, 0);
break;
case 's':
handle = (long)rb_vm_call_cfunc(rb_vm_top_self(), load_ext,
path, 0, path);
rb_ary_push(ruby_dln_librefs, LONG2NUM(handle));
break;
}
rb_provide_feature(path);
result = TAG_RETURN;
}
}
}
TH_POP_TAG();
load_unlock(ftptr, !state);
rb_set_safe_level_force(saved.safe);
if (state) {
/* never TAG_RETURN */
return state;
}
th->errinfo = errinfo;
if (RUBY_DTRACE_REQUIRE_RETURN_ENABLED()) {
RUBY_DTRACE_REQUIRE_RETURN(StringValuePtr(fname),
rb_sourcefile(),
rb_sourceline());
}
return result;
}
/*
* returns
* 0: if already loaded (false)
* 1: successfully loaded (true)
* <0: not found (LoadError)
* >1: exception
*/
int
rb_require_internal(VALUE fname, int safe)
{
volatile int result = -1;
rb_execution_context_t *ec = GET_EC();
volatile VALUE errinfo = ec->errinfo;
enum ruby_tag_type state;
struct {
int safe;
} volatile saved;
char *volatile ftptr = 0;
VALUE path;
fname = rb_get_path_check(fname, safe);
path = rb_str_encode_ospath(fname);
RUBY_DTRACE_HOOK(REQUIRE_ENTRY, RSTRING_PTR(fname));
EC_PUSH_TAG(ec);
saved.safe = rb_safe_level();
if ((state = EC_EXEC_TAG()) == TAG_NONE) {
long handle;
int found;
rb_set_safe_level_force(0);
RUBY_DTRACE_HOOK(FIND_REQUIRE_ENTRY, RSTRING_PTR(fname));
found = search_required(path, &path, safe, rb_feature_p);
RUBY_DTRACE_HOOK(FIND_REQUIRE_RETURN, RSTRING_PTR(fname));
if (found) {
if (!path || !(ftptr = load_lock(RSTRING_PTR(path)))) {
result = 0;
}
else if (!*ftptr) {
rb_provide_feature(path);
result = TAG_RETURN;
}
else {
switch (found) {
case 'r':
state = rb_load_internal0(ec, path, 0);
break;
case 's':
handle = (long)rb_vm_call_cfunc(rb_vm_top_self(), load_ext,
path, VM_BLOCK_HANDLER_NONE, path);
rb_ary_push(ruby_dln_librefs, LONG2NUM(handle));
break;
}
if (!state) {
rb_provide_feature(path);
result = TAG_RETURN;
}
}
}
}
EC_POP_TAG();
load_unlock(ftptr, !state);
rb_set_safe_level_force(saved.safe);
if (state) {
RB_GC_GUARD(fname);
/* never TAG_RETURN */
return state;
}
ec->errinfo = errinfo;
RUBY_DTRACE_HOOK(REQUIRE_RETURN, RSTRING_PTR(fname));
return result;
}