void
memdealloc(VALUE obj)
{
#ifdef GCLOG
static int fd = 0;
char buf[65536];
#endif
if (!TEST(obj))
return;
if (BASIC(obj).refcount == GC_NEVER_FREE)
return;
switch (TYPE(obj))
{
case T_CLASS:
case T_SYMBOL:
case T_MCALL:
case T_CREF:
case T_ASSIGN:
case T_BRANCH:
case T_BREAK:
case T_TRUE:
case T_NIL:
case T_LABEL:
case T_TRY:
case T_CATCH:
case T_BEGIN:
case T_RESCUE:
/* should never be garbage collected */
return;
case T_THREAD:
if (main_thread() == obj)
return;
default:
break;
}
#ifdef GCLOG
if (!fd)
{
fd = open("gc.log", O_WRONLY | O_CREAT | O_TRUNC);
if (!fd)
{
perror("open");
fail("error during logging of GC activity");
}
}
snprintf(buf, sizeof(buf), "gc deallocating %s:%p\n", type2cstring(obj), (VALUE*)obj);
write(fd, buf, strlen(buf));
#endif
if (BASIC(obj).reap)
BASIC(obj).reap(obj);
free((VALUE*)obj);
}
int
object_refcount_up(void *ptr)
{
VALUE obj = (VALUE)ptr;
if (BASIC(obj).refcount == GC_NEVER_FREE)
return VECTOR_CONTINUE;
BASIC(obj).refcount++;
return VECTOR_CONTINUE;
}
int
object_refcount_check(void *ptr)
{
VALUE obj = (VALUE)ptr;
if ( (BASIC(obj).refcount == GC_NEVER_FREE) ||
(BASIC(obj).refcount > 0) )
return VECTOR_CONTINUE;
memdealloc(obj);
return VECTOR_DELETE;
}
VALUE
hash_new()
{
VALUE hash;
hash = NEW_OBJ(Hash);
OBJ_SETUP(hash, T_HASH);
BASIC(hash).klass = cHash;
BASIC(hash).reap = hash_reap;
HASH(hash)->ptr = st_init_numtable();
return (VALUE)hash;
}
VALUE
thread_new()
{
VALUE thr;
thr = NEW_OBJ(Thread);
OBJ_SETUP(thr, T_THREAD);
BASIC(thr).klass = cThread;
vector_push(thr_stk, (void*)thr);
THREAD(thr)->alive_p = 1;
if (cur_thr)
THREAD(thr)->branch = THREAD(cur_thr)->branch;
if ((thr != main_thread()) && (thr != cur_thr))
THREAD(thr)->recv = cur_thr;
THREAD(thr)->up = cur_thr;
THREAD(thr)->env_tbl = st_init_numtable();
THREAD(thr)->obj_stk = vector_new();
THREAD(thr)->self_stk = vector_new();
THREAD(thr)->env_stk = vector_new();
THREAD(thr)->tok_stk = vector_new();
THREAD(thr)->stack = vector_new();
#ifdef SYMBOL_CACHE
THREAD(thr)->modified_syms = vector_new();
#endif
return thr;
}
int
object_refcount_down(void *ptr)
{
VALUE obj = (VALUE)ptr;
if (BASIC(obj).refcount == GC_NEVER_FREE)
return VECTOR_CONTINUE;
else if (THREAD(cur_thr)->last == obj)
return VECTOR_CONTINUE;
else if (--(BASIC(obj).refcount) > 0)
return VECTOR_CONTINUE;
memdealloc(obj);
vector_delete(THREAD(cur_thr)->obj_stk, (void*)obj);
return VECTOR_DELETE;
}
VALUE
float_new(float num)
{
VALUE obj;
obj = NEW_OBJ(Float);
OBJ_SETUP(obj, T_FLOAT);
BASIC(obj).klass = cFloat;
FLOAT(obj)->num = num;
return (VALUE)obj;
}
VALUE
gc_never_free(VALUE obj)
{
if (!obj)
return Qnil;
BASIC(obj).refcount = GC_NEVER_FREE;
if (TYPE(obj) == T_ARRAY)
vector_foreach(ARRAY(obj)->ptr, gc_never_free0);
else if (TYPE(obj) == T_HASH)
st_foreach(HASH(obj)->ptr, gc_never_free_hash0, 0);
return obj;
}
void
Init_exception()
{
cException = define_class(intern("Exception"), cObject);
Qretry = NEW_OBJ(struct goon);
OBJ_SETUP(Qretry, T_RETRY);
BASIC(Qretry).klass = cException;
gc_never_free(Qretry);
define_global_function(intern("fail"), throw_exc, -1);
define_global_function(intern("throw"), throw_exc, -1);
define_global_function(intern("retry"), exception_retry, 0);
}
void
Init_thread()
{
if (!thr_stk)
thr_stk = vector_new();
if (!cur_thr)
cur_thr = thread_new();
cThread = define_class(intern("Thread"), cObject);
OBJ_SETUP(cur_thr, T_THREAD);
BASIC(cur_thr).klass = cThread;
define_method(cThread, intern("call"), eval_thread, 1);
define_singleton_method(cThread, intern("main"), main_thread, 0);
define_singleton_method(cThread, intern("current"), thread_s_current, 0);
define_singleton_method(cThread, intern("critical"), thread_get_critical, 0);
define_singleton_method(cThread, intern("setcritical"), thread_set_critical, 1);
}
#define A_OPCODE(OPCODE15) ((OPCODE15) >> 2), PDP10_INSN_A_OPCODE
#define A_UNUSED(OPCODE9) ((OPCODE9) << 4), PDP10_INSN_A_UNUSED
#define IO(OPCODE15) ((OPCODE15) >> 2), PDP10_INSN_IO
/* Much of the contents of these tables is based on code in
Lars Brinkhoff's pdp10-its-disassembler, but the code has
since been completely rewritten and extended. */
static const struct pdp10_insn pdp10_insn[] = {
/* name, high13, fmt, models */
/* 000: ILLEGAL */
/* 001-037: LUUOs */
/* ITS MUUOs */
{ ".iot", BASIC(0040), PDP10_ITS },
{ ".open", BASIC(0041), PDP10_ITS },
{ ".oper", BASIC(0042), PDP10_ITS },
{ ".call", A_OPCODE(004300), PDP10_ITS },
{ ".dismis", A_OPCODE(004304), PDP10_ITS },
{ ".lose", A_OPCODE(004310), PDP10_ITS }, /* XXX: .trans? */
{ ".tranad", A_OPCODE(004314), PDP10_ITS },
{ ".value", A_OPCODE(004320), PDP10_ITS },
{ ".utran", A_OPCODE(004324), PDP10_ITS },
{ ".core", A_OPCODE(004330), PDP10_ITS },
{ ".trand", A_OPCODE(004334), PDP10_ITS },
{ ".dstart", A_OPCODE(004340), PDP10_ITS },
{ ".fdele", A_OPCODE(004344), PDP10_ITS },
{ ".dstrtl", A_OPCODE(004350), PDP10_ITS },
{ ".suset", A_OPCODE(004354), PDP10_ITS },
{ ".ltpen", A_OPCODE(004360), PDP10_ITS },