static guint64
debugger_compile_method (guint64 method_arg)
{
MonoMethod *method = (MonoMethod *) GUINT_TO_POINTER ((gsize) method_arg);
gpointer addr;
mono_debugger_lock ();
addr = mono_compile_method (method);
mono_debugger_unlock ();
return (guint64) (gsize) addr;
}
/*
* actually, we might want to queue the finalize requests in a separate thread,
* but we need to be careful about the execution domain of the thread...
*/
void
mono_gc_run_finalize (void *obj, void *data)
{
MonoObject *exc = NULL;
MonoObject *o;
#ifndef HAVE_SGEN_GC
MonoObject *o2;
#endif
MonoMethod* finalizer = NULL;
MonoDomain *caller_domain = mono_domain_get ();
MonoDomain *domain;
RuntimeInvokeFunction runtime_invoke;
GSList *l, *refs = NULL;
o = (MonoObject*)((char*)obj + GPOINTER_TO_UINT (data));
if (suspend_finalizers)
return;
domain = o->vtable->domain;
#ifndef HAVE_SGEN_GC
mono_domain_finalizers_lock (domain);
o2 = g_hash_table_lookup (domain->finalizable_objects_hash, o);
refs = mono_gc_remove_weak_track_object (domain, o);
mono_domain_finalizers_unlock (domain);
if (!o2)
/* Already finalized somehow */
return;
#endif
if (refs) {
/*
* Support for GCHandles of type WeakTrackResurrection:
*
* Its not exactly clear how these are supposed to work, or how their
* semantics can be implemented. We only implement one crucial thing:
* these handles are only cleared after the finalizer has ran.
*/
for (l = refs; l; l = l->next) {
guint32 gchandle = GPOINTER_TO_UINT (l->data);
mono_gchandle_set_target (gchandle, o);
}
g_slist_free (refs);
}
/* make sure the finalizer is not called again if the object is resurrected */
object_register_finalizer (obj, NULL);
if (o->vtable->klass == mono_defaults.internal_thread_class) {
MonoInternalThread *t = (MonoInternalThread*)o;
if (mono_gc_is_finalizer_internal_thread (t))
/* Avoid finalizing ourselves */
return;
if (t->threadpool_thread && finalizing_root_domain) {
/* Don't finalize threadpool threads when
shutting down - they're finalized when the
threadpool shuts down. */
add_thread_to_finalize (t);
return;
}
}
if (o->vtable->klass->image == mono_defaults.corlib && !strcmp (o->vtable->klass->name, "DynamicMethod") && finalizing_root_domain) {
/*
* These can't be finalized during unloading/shutdown, since that would
* free the native code which can still be referenced by other
* finalizers.
* FIXME: This is not perfect, objects dying at the same time as
* dynamic methods can still reference them even when !shutdown.
*/
return;
}
if (mono_runtime_get_no_exec ())
return;
/* speedup later... and use a timeout */
/* g_print ("Finalize run on %p %s.%s\n", o, mono_object_class (o)->name_space, mono_object_class (o)->name); */
/* Use _internal here, since this thread can enter a doomed appdomain */
mono_domain_set_internal (mono_object_domain (o));
/* delegates that have a native function pointer allocated are
* registered for finalization, but they don't have a Finalize
* method, because in most cases it's not needed and it's just a waste.
*/
if (o->vtable->klass->delegate) {
MonoDelegate* del = (MonoDelegate*)o;
if (del->delegate_trampoline)
mono_delegate_free_ftnptr ((MonoDelegate*)o);
mono_domain_set_internal (caller_domain);
return;
}
finalizer = mono_class_get_finalizer (o->vtable->klass);
#ifndef DISABLE_COM
/* If object has a CCW but has no finalizer, it was only
* registered for finalization in order to free the CCW.
* Else it needs the regular finalizer run.
* FIXME: what to do about ressurection and suppression
* of finalizer on object with CCW.
*/
if (mono_marshal_free_ccw (o) && !finalizer) {
mono_domain_set_internal (caller_domain);
return;
}
#endif
/*
* To avoid the locking plus the other overhead of mono_runtime_invoke (),
* create and precompile a wrapper which calls the finalize method using
* a CALLVIRT.
*/
if (!domain->finalize_runtime_invoke) {
MonoMethod *invoke = mono_marshal_get_runtime_invoke (mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE);
domain->finalize_runtime_invoke = mono_compile_method (invoke);
}
runtime_invoke = domain->finalize_runtime_invoke;
mono_runtime_class_init (o->vtable);
runtime_invoke (o, NULL, &exc, NULL);
if (exc) {
/* fixme: do something useful */
}
mono_domain_set_internal (caller_domain);
}
/*
* actually, we might want to queue the finalize requests in a separate thread,
* but we need to be careful about the execution domain of the thread...
*/
void
mono_gc_run_finalize (void *obj, void *data)
{
if (do_not_finalize)
return;
MonoObject *exc = NULL;
MonoObject *o;
#ifndef HAVE_SGEN_GC
MonoObject *o2;
#endif
MonoMethod* finalizer = NULL;
MonoDomain *caller_domain = mono_domain_get ();
MonoDomain *domain;
RuntimeInvokeFunction runtime_invoke;
// This function is called from the innards of the GC, so our best alternative for now is to do polling here
MONO_SUSPEND_CHECK ();
o = (MonoObject*)((char*)obj + GPOINTER_TO_UINT (data));
if (log_finalizers)
g_log ("mono-gc-finalizers", G_LOG_LEVEL_DEBUG, "<%s at %p> Starting finalizer checks.", o->vtable->klass->name, o);
if (suspend_finalizers)
return;
domain = o->vtable->domain;
#ifndef HAVE_SGEN_GC
mono_domain_finalizers_lock (domain);
o2 = g_hash_table_lookup (domain->finalizable_objects_hash, o);
mono_domain_finalizers_unlock (domain);
if (!o2)
/* Already finalized somehow */
return;
#endif
/* make sure the finalizer is not called again if the object is resurrected */
object_register_finalizer (obj, NULL);
if (log_finalizers)
g_log ("mono-gc-finalizers", G_LOG_LEVEL_MESSAGE, "<%s at %p> Registered finalizer as processed.", o->vtable->klass->name, o);
if (o->vtable->klass == mono_defaults.internal_thread_class) {
MonoInternalThread *t = (MonoInternalThread*)o;
if (mono_gc_is_finalizer_internal_thread (t))
/* Avoid finalizing ourselves */
return;
if (t->threadpool_thread && finalizing_root_domain) {
/* Don't finalize threadpool threads when
shutting down - they're finalized when the
threadpool shuts down. */
add_thread_to_finalize (t);
return;
}
}
if (o->vtable->klass->image == mono_defaults.corlib && !strcmp (o->vtable->klass->name, "DynamicMethod") && finalizing_root_domain) {
/*
* These can't be finalized during unloading/shutdown, since that would
* free the native code which can still be referenced by other
* finalizers.
* FIXME: This is not perfect, objects dying at the same time as
* dynamic methods can still reference them even when !shutdown.
*/
return;
}
if (mono_runtime_get_no_exec ())
return;
/* speedup later... and use a timeout */
/* g_print ("Finalize run on %p %s.%s\n", o, mono_object_class (o)->name_space, mono_object_class (o)->name); */
/* Use _internal here, since this thread can enter a doomed appdomain */
mono_domain_set_internal (mono_object_domain (o));
/* delegates that have a native function pointer allocated are
* registered for finalization, but they don't have a Finalize
* method, because in most cases it's not needed and it's just a waste.
*/
if (o->vtable->klass->delegate) {
MonoDelegate* del = (MonoDelegate*)o;
if (del->delegate_trampoline)
mono_delegate_free_ftnptr ((MonoDelegate*)o);
mono_domain_set_internal (caller_domain);
return;
}
finalizer = mono_class_get_finalizer (o->vtable->klass);
/* If object has a CCW but has no finalizer, it was only
* registered for finalization in order to free the CCW.
* Else it needs the regular finalizer run.
* FIXME: what to do about ressurection and suppression
* of finalizer on object with CCW.
*/
if (mono_marshal_free_ccw (o) && !finalizer) {
mono_domain_set_internal (caller_domain);
return;
}
/*
* To avoid the locking plus the other overhead of mono_runtime_invoke (),
* create and precompile a wrapper which calls the finalize method using
* a CALLVIRT.
*/
if (log_finalizers)
g_log ("mono-gc-finalizers", G_LOG_LEVEL_MESSAGE, "<%s at %p> Compiling finalizer.", o->vtable->klass->name, o);
if (!domain->finalize_runtime_invoke) {
MonoMethod *invoke = mono_marshal_get_runtime_invoke (mono_class_get_method_from_name_flags (mono_defaults.object_class, "Finalize", 0, 0), TRUE);
domain->finalize_runtime_invoke = mono_compile_method (invoke);
}
runtime_invoke = domain->finalize_runtime_invoke;
mono_runtime_class_init (o->vtable);
if (G_UNLIKELY (MONO_GC_FINALIZE_INVOKE_ENABLED ())) {
MONO_GC_FINALIZE_INVOKE ((unsigned long)o, mono_object_get_size (o),
o->vtable->klass->name_space, o->vtable->klass->name);
}
if (log_finalizers)
g_log ("mono-gc-finalizers", G_LOG_LEVEL_MESSAGE, "<%s at %p> Calling finalizer.", o->vtable->klass->name, o);
runtime_invoke (o, NULL, &exc, NULL);
if (log_finalizers)
g_log ("mono-gc-finalizers", G_LOG_LEVEL_MESSAGE, "<%s at %p> Returned from finalizer.", o->vtable->klass->name, o);
if (exc)
mono_thread_internal_unhandled_exception (exc);
mono_domain_set_internal (caller_domain);
}
static void replace_method (Package *pkg) {
xmono::ReplaceMethodReq req;
xmono::ReplaceMethodRsp rsp;
std::string str((char*)pkg->body, pkg->all_len - sizeof (Package));
if (!req.ParseFromString (str)) {
LOGD ("xmono::ReplaceMethodReq ParseFromString err!");
return;
}
std::string err;
void *p, *old_p;
uint8_t *code;
int code_size;
MonoMethodHeader *mh;
MonoThread *thread;
MonoMethod *new_method;
MonoDomain *domain;
MonoMethod * method = get_method_with_token (req.image_name ().c_str (), req.method_token ());
if (!method) {
rsp.set_err (false);
rsp.set_msg (helper_last_err ());
goto replace_method_end;
}
domain = mono_domain_get_by_id (req.domain_id ());
if (!domain) {
rsp.set_err (false);
rsp.set_msg ("can not get the domain from id");
goto replace_method_end;
}
mh = mono_method_get_header (method);
if (req.ex_size () != mono_method_header_get_num_clauses (mh)) {
rsp.set_err (false);
rsp.set_msg ("ex size != mono_method_header_clauses size!");
goto replace_method_end;
}
for (int i = 0; i < req.ex_size (); i++) {
xmono::ReplaceMethodReq_ExceptionClause const &e = req.ex (i);
void *iter = 0;
MonoExceptionClause *clauses = &mh->clauses[i];
MonoExceptionClause *old_e = (MonoExceptionClause*)iter;
old_e->try_offset = e.try_offset ();
old_e->try_len = e.try_len ();
old_e->handler_offset = e.handler_offset ();
old_e->handler_len = e.handler_len ();
}
code = new uint8_t[req.new_code ().size ()];
memcpy (code, req.new_code ().c_str (), req.new_code ().size ());
mh->code = code;
mh->code_size = req.new_code ().size ();
thread = mono_thread_attach (domain);
/*128 是一个估计值, 在未来可能不稳定, 但当前只能如此*/
new_method = (MonoMethod*)calloc (128, 1); /*这个地方用malloc优于用new*/
memcpy (new_method, method, 128);
pthread_mutex_lock (&replace_mutex);
replace_method_dict[new_method] = true;
pthread_mutex_unlock (&replace_mutex);
p = mono_compile_method (new_method);
memcpy (hooked_method_dict[method]->specific_hook + 4, &p, 4);
pthread_mutex_lock (&hooked_mutex);
old_p = mono_jit_info_get_code_start (hooked_method_dict[method]->jinfo);
pthread_mutex_unlock (&hooked_mutex);
mono_thread_detach (thread);
LOGD ("compile method, new ptr : %p, old ptr : %p", p, old_p);
rsp.set_err (true);
rsp.set_msg ("replace_method successful.");
replace_method_end:
std::string out;
rsp.SerializeToString (&out);
ecmd_send (XMONO_ID_REPLACE_METHOD_RSP, (uint8_t const*)out.c_str (), out.size ());
return;
}
void *new_mono_compile_method(MonoMethod *m) {
return runInMonoCompileMethodHooker(m, mono_compile_method(m));
}
void CPipeServer::CompileMethod()
{
void *method=(void *)ReadQword();
void *result=mono_compile_method(method);
WriteQword((UINT_PTR)result);
}
