/
marshal.c
12386 lines (10423 loc) · 353 KB
/
marshal.c
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/**
* \file
* Routines for marshaling complex types in P/Invoke methods.
*
* Author:
* Paolo Molaro (lupus@ximian.com)
*
* Copyright 2002-2003 Ximian, Inc (http://www.ximian.com)
* Copyright 2004-2009 Novell, Inc (http://www.novell.com)
* Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
*
* Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#include "config.h"
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include "object.h"
#include "loader.h"
#include "cil-coff.h"
#include "metadata/marshal.h"
#include "metadata/marshal-internals.h"
#include "metadata/method-builder.h"
#include "metadata/tabledefs.h"
#include "metadata/exception.h"
#include "metadata/appdomain.h"
#include "mono/metadata/abi-details.h"
#include "mono/metadata/debug-helpers.h"
#include "mono/metadata/threads.h"
#include "mono/metadata/monitor.h"
#include "mono/metadata/class-internals.h"
#include "mono/metadata/metadata-internals.h"
#include "mono/metadata/domain-internals.h"
#include "mono/metadata/gc-internals.h"
#include "mono/metadata/threads-types.h"
#include "mono/metadata/string-icalls.h"
#include "mono/metadata/attrdefs.h"
#include "mono/metadata/cominterop.h"
#include "mono/metadata/remoting.h"
#include "mono/metadata/reflection-internals.h"
#include "mono/metadata/threadpool.h"
#include "mono/metadata/handle.h"
#include "mono/utils/mono-counters.h"
#include "mono/utils/mono-tls.h"
#include "mono/utils/mono-memory-model.h"
#include "mono/utils/atomic.h"
#include <mono/utils/mono-threads.h>
#include <mono/utils/mono-threads-coop.h>
#include <mono/utils/mono-error-internals.h>
#include <string.h>
#include <errno.h>
/* #define DEBUG_RUNTIME_CODE */
#define OPDEF(a,b,c,d,e,f,g,h,i,j) \
a = i,
enum {
#include "mono/cil/opcode.def"
LAST = 0xff
};
#undef OPDEF
/*
* This mutex protects the various marshalling related caches in MonoImage
* and a few other data structures static to this file.
*
* The marshal lock is a non-recursive complex lock that sits below the domain lock in the
* runtime locking latice. Which means it can take simple locks suck as the image lock.
*/
#define mono_marshal_lock() mono_locks_os_acquire (&marshal_mutex, MarshalLock)
#define mono_marshal_unlock() mono_locks_os_release (&marshal_mutex, MarshalLock)
static mono_mutex_t marshal_mutex;
static gboolean marshal_mutex_initialized;
static MonoNativeTlsKey last_error_tls_id;
static MonoNativeTlsKey load_type_info_tls_id;
static gboolean use_aot_wrappers;
static int class_marshal_info_count;
static void ftnptr_eh_callback_default (guint32 gchandle);
static MonoFtnPtrEHCallback ftnptr_eh_callback = ftnptr_eh_callback_default;
static void
delegate_hash_table_add (MonoDelegateHandle d);
static void
delegate_hash_table_remove (MonoDelegate *d);
static void
emit_struct_conv (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object);
static void
emit_struct_conv_full (MonoMethodBuilder *mb, MonoClass *klass, gboolean to_object, int offset_of_first_child_field, MonoMarshalNative string_encoding);
static void
mono_struct_delete_old (MonoClass *klass, char *ptr);
MONO_API void *
mono_marshal_string_to_utf16 (MonoString *s);
static void *
mono_marshal_string_to_utf16_copy (MonoString *s);
#ifndef HOST_WIN32
static gpointer
mono_string_to_utf8str (MonoString *string_obj);
#endif
static MonoStringBuilder *
mono_string_utf8_to_builder2 (char *text);
static MonoStringBuilder *
mono_string_utf16_to_builder2 (gunichar2 *text);
static MonoString*
mono_string_new_len_wrapper (const char *text, guint length);
static MonoString *
mono_string_from_byvalstr (const char *data, int len);
static MonoString *
mono_string_from_byvalwstr (gunichar2 *data, int len);
static void
mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *eltype, guint32 elnum);
static void
mono_byvalarray_to_byte_array (MonoArray *arr, gpointer native_arr, guint32 elnum);
static void
mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *eltype, guint32 elnum);
static void
mono_array_to_byte_byvalarray (gpointer native_arr, MonoArray *arr, guint32 elnum);
static MonoAsyncResult *
mono_delegate_begin_invoke (MonoDelegate *delegate, gpointer *params);
static MonoObject *
mono_delegate_end_invoke (MonoDelegate *delegate, gpointer *params);
static void
mono_marshal_set_last_error_windows (int error);
static MonoObject *
mono_marshal_isinst_with_cache (MonoObject *obj, MonoClass *klass, uintptr_t *cache);
static void init_safe_handle (void);
static void*
ves_icall_marshal_alloc (gsize size);
void
mono_string_utf8_to_builder (MonoStringBuilder *sb, char *text);
void
mono_string_utf16_to_builder (MonoStringBuilder *sb, gunichar2 *text);
gchar*
mono_string_builder_to_utf8 (MonoStringBuilder *sb);
gunichar2*
mono_string_builder_to_utf16 (MonoStringBuilder *sb);
void
mono_string_to_byvalstr (gpointer dst, MonoString *src, int size);
void
mono_string_to_byvalwstr (gpointer dst, MonoString *src, int size);
gpointer
mono_delegate_to_ftnptr (MonoDelegate *delegate);
gpointer
mono_delegate_handle_to_ftnptr (MonoDelegateHandle delegate, MonoError *error);
MonoDelegate*
mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn);
MonoDelegateHandle
mono_ftnptr_to_delegate_handle (MonoClass *klass, gpointer ftn, MonoError *error);
gpointer
mono_array_to_savearray (MonoArray *array);
gpointer
mono_array_to_lparray (MonoArray *array);
void
mono_free_lparray (MonoArray *array, gpointer* nativeArray);
gpointer
mono_marshal_asany (MonoObject *obj, MonoMarshalNative string_encoding, int param_attrs);
void
mono_marshal_free_asany (MonoObject *o, gpointer ptr, MonoMarshalNative string_encoding, int param_attrs);
gpointer
mono_array_to_savearray (MonoArray *array);
gpointer
mono_array_to_lparray (MonoArray *array);
void
mono_free_lparray (MonoArray *array, gpointer* nativeArray);
static void
mono_marshal_ftnptr_eh_callback (guint32 gchandle);
static MonoThreadInfo*
mono_icall_start (HandleStackMark *stackmark, MonoError *error);
static void
mono_icall_end (MonoThreadInfo *info, HandleStackMark *stackmark, MonoError *error);
static MonoObjectHandle
mono_icall_handle_new (gpointer rawobj);
static MonoObjectHandle
mono_icall_handle_new_interior (gpointer rawobj);
/* Lazy class loading functions */
static GENERATE_GET_CLASS_WITH_CACHE (string_builder, "System.Text", "StringBuilder");
static GENERATE_GET_CLASS_WITH_CACHE (date_time, "System", "DateTime");
static GENERATE_GET_CLASS_WITH_CACHE (fixed_buffer_attribute, "System.Runtime.CompilerServices", "FixedBufferAttribute");
static GENERATE_TRY_GET_CLASS_WITH_CACHE (unmanaged_function_pointer_attribute, "System.Runtime.InteropServices", "UnmanagedFunctionPointerAttribute");
static GENERATE_TRY_GET_CLASS_WITH_CACHE (icustom_marshaler, "System.Runtime.InteropServices", "ICustomMarshaler");
/* MonoMethod pointers to SafeHandle::DangerousAddRef and ::DangerousRelease */
static MonoMethod *sh_dangerous_add_ref;
static MonoMethod *sh_dangerous_release;
static void
init_safe_handle ()
{
sh_dangerous_add_ref = mono_class_get_method_from_name (
mono_class_try_get_safehandle_class (), "DangerousAddRef", 1);
sh_dangerous_release = mono_class_get_method_from_name (
mono_class_try_get_safehandle_class (), "DangerousRelease", 0);
}
static void
register_icall (gpointer func, const char *name, const char *sigstr, gboolean no_wrapper)
{
MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
mono_register_jit_icall (func, name, sig, no_wrapper);
}
static void
register_icall_no_wrapper (gpointer func, const char *name, const char *sigstr)
{
MonoMethodSignature *sig = mono_create_icall_signature (sigstr);
mono_register_jit_icall (func, name, sig, TRUE);
}
MonoMethodSignature*
mono_signature_no_pinvoke (MonoMethod *method)
{
MonoMethodSignature *sig = mono_method_signature (method);
if (sig->pinvoke) {
sig = mono_metadata_signature_dup_full (method->klass->image, sig);
sig->pinvoke = FALSE;
}
return sig;
}
void
mono_marshal_init_tls (void)
{
mono_native_tls_alloc (&last_error_tls_id, NULL);
mono_native_tls_alloc (&load_type_info_tls_id, NULL);
}
static MonoObject*
mono_object_isinst_icall (MonoObject *obj, MonoClass *klass)
{
if (!klass)
return NULL;
/* This is called from stelemref so it is expected to succeed */
/* Fastpath */
if (mono_class_is_interface (klass)) {
MonoVTable *vt = obj->vtable;
if (!klass->inited)
mono_class_init (klass);
if (MONO_VTABLE_IMPLEMENTS_INTERFACE (vt, klass->interface_id))
return obj;
}
MonoError error;
MonoObject *result = mono_object_isinst_checked (obj, klass, &error);
mono_error_set_pending_exception (&error);
return result;
}
static MonoString*
ves_icall_mono_string_from_utf16 (gunichar2 *data)
{
MonoError error;
MonoString *result = mono_string_from_utf16_checked (data, &error);
mono_error_set_pending_exception (&error);
return result;
}
static char*
ves_icall_mono_string_to_utf8 (MonoString *str)
{
MonoError error;
char *result = mono_string_to_utf8_checked (str, &error);
mono_error_set_pending_exception (&error);
return result;
}
static MonoString*
ves_icall_string_new_wrapper (const char *text)
{
if (text) {
MonoError error;
MonoString *res = mono_string_new_checked (mono_domain_get (), text, &error);
mono_error_set_pending_exception (&error);
return res;
}
return NULL;
}
void
mono_marshal_init (void)
{
static gboolean module_initialized = FALSE;
if (!module_initialized) {
module_initialized = TRUE;
mono_os_mutex_init_recursive (&marshal_mutex);
marshal_mutex_initialized = TRUE;
register_icall (ves_icall_System_Threading_Thread_ResetAbort, "ves_icall_System_Threading_Thread_ResetAbort", "void", TRUE);
register_icall (mono_marshal_string_to_utf16, "mono_marshal_string_to_utf16", "ptr obj", FALSE);
register_icall (mono_marshal_string_to_utf16_copy, "mono_marshal_string_to_utf16_copy", "ptr obj", FALSE);
register_icall (mono_string_to_utf16, "mono_string_to_utf16", "ptr obj", FALSE);
register_icall (ves_icall_mono_string_from_utf16, "ves_icall_mono_string_from_utf16", "obj ptr", FALSE);
register_icall (mono_string_from_byvalstr, "mono_string_from_byvalstr", "obj ptr int", FALSE);
register_icall (mono_string_from_byvalwstr, "mono_string_from_byvalwstr", "obj ptr int", FALSE);
register_icall (mono_string_new_wrapper, "mono_string_new_wrapper", "obj ptr", FALSE);
register_icall (ves_icall_string_new_wrapper, "ves_icall_string_new_wrapper", "obj ptr", FALSE);
register_icall (mono_string_new_len_wrapper, "mono_string_new_len_wrapper", "obj ptr int", FALSE);
register_icall (ves_icall_mono_string_to_utf8, "ves_icall_mono_string_to_utf8", "ptr obj", FALSE);
register_icall (mono_string_to_utf8str, "mono_string_to_utf8str", "ptr obj", FALSE);
register_icall (mono_string_to_ansibstr, "mono_string_to_ansibstr", "ptr object", FALSE);
register_icall (mono_string_builder_to_utf8, "mono_string_builder_to_utf8", "ptr object", FALSE);
register_icall (mono_string_builder_to_utf16, "mono_string_builder_to_utf16", "ptr object", FALSE);
register_icall (mono_array_to_savearray, "mono_array_to_savearray", "ptr object", FALSE);
register_icall (mono_array_to_lparray, "mono_array_to_lparray", "ptr object", FALSE);
register_icall (mono_free_lparray, "mono_free_lparray", "void object ptr", FALSE);
register_icall (mono_byvalarray_to_array, "mono_byvalarray_to_array", "void object ptr ptr int32", FALSE);
register_icall (mono_byvalarray_to_byte_array, "mono_byvalarray_to_byte_array", "void object ptr int32", FALSE);
register_icall (mono_array_to_byvalarray, "mono_array_to_byvalarray", "void ptr object ptr int32", FALSE);
register_icall (mono_array_to_byte_byvalarray, "mono_array_to_byte_byvalarray", "void ptr object int32", FALSE);
register_icall (mono_delegate_to_ftnptr, "mono_delegate_to_ftnptr", "ptr object", FALSE);
register_icall (mono_ftnptr_to_delegate, "mono_ftnptr_to_delegate", "object ptr ptr", FALSE);
register_icall (mono_marshal_asany, "mono_marshal_asany", "ptr object int32 int32", FALSE);
register_icall (mono_marshal_free_asany, "mono_marshal_free_asany", "void object ptr int32 int32", FALSE);
register_icall (ves_icall_marshal_alloc, "ves_icall_marshal_alloc", "ptr ptr", FALSE);
register_icall (mono_marshal_free, "mono_marshal_free", "void ptr", FALSE);
register_icall (mono_marshal_set_last_error, "mono_marshal_set_last_error", "void", FALSE);
register_icall (mono_marshal_set_last_error_windows, "mono_marshal_set_last_error_windows", "void int32", FALSE);
register_icall (mono_string_utf8_to_builder, "mono_string_utf8_to_builder", "void ptr ptr", FALSE);
register_icall (mono_string_utf8_to_builder2, "mono_string_utf8_to_builder2", "object ptr", FALSE);
register_icall (mono_string_utf16_to_builder, "mono_string_utf16_to_builder", "void ptr ptr", FALSE);
register_icall (mono_string_utf16_to_builder2, "mono_string_utf16_to_builder2", "object ptr", FALSE);
register_icall (mono_marshal_free_array, "mono_marshal_free_array", "void ptr int32", FALSE);
register_icall (mono_string_to_byvalstr, "mono_string_to_byvalstr", "void ptr ptr int32", FALSE);
register_icall (mono_string_to_byvalwstr, "mono_string_to_byvalwstr", "void ptr ptr int32", FALSE);
register_icall (g_free, "g_free", "void ptr", FALSE);
register_icall_no_wrapper (mono_object_isinst_icall, "mono_object_isinst_icall", "object object ptr");
register_icall (mono_struct_delete_old, "mono_struct_delete_old", "void ptr ptr", FALSE);
register_icall (mono_delegate_begin_invoke, "mono_delegate_begin_invoke", "object object ptr", FALSE);
register_icall (mono_delegate_end_invoke, "mono_delegate_end_invoke", "object object ptr", FALSE);
register_icall (mono_gc_wbarrier_generic_nostore, "wb_generic", "void ptr", FALSE);
register_icall (mono_gchandle_get_target, "mono_gchandle_get_target", "object int32", TRUE);
register_icall (mono_gchandle_new, "mono_gchandle_new", "uint32 object bool", TRUE);
register_icall (mono_marshal_isinst_with_cache, "mono_marshal_isinst_with_cache", "object object ptr ptr", FALSE);
register_icall (mono_marshal_ftnptr_eh_callback, "mono_marshal_ftnptr_eh_callback", "void uint32", TRUE);
register_icall (mono_threads_enter_gc_safe_region_unbalanced, "mono_threads_enter_gc_safe_region_unbalanced", "ptr ptr", TRUE);
register_icall (mono_threads_exit_gc_safe_region_unbalanced, "mono_threads_exit_gc_safe_region_unbalanced", "void ptr ptr", TRUE);
register_icall (mono_threads_attach_coop, "mono_threads_attach_coop", "ptr ptr ptr", TRUE);
register_icall (mono_threads_detach_coop, "mono_threads_detach_coop", "void ptr ptr", TRUE);
register_icall (mono_icall_start, "mono_icall_start", "ptr ptr ptr", TRUE);
register_icall (mono_icall_end, "mono_icall_end", "void ptr ptr ptr", TRUE);
register_icall (mono_icall_handle_new, "mono_icall_handle_new", "ptr ptr", TRUE);
register_icall (mono_icall_handle_new_interior, "mono_icall_handle_new_interior", "ptr ptr", TRUE);
mono_cominterop_init ();
mono_remoting_init ();
mono_counters_register ("MonoClass::class_marshal_info_count count",
MONO_COUNTER_METADATA | MONO_COUNTER_INT, &class_marshal_info_count);
}
}
void
mono_marshal_cleanup (void)
{
mono_cominterop_cleanup ();
mono_native_tls_free (load_type_info_tls_id);
mono_native_tls_free (last_error_tls_id);
mono_os_mutex_destroy (&marshal_mutex);
marshal_mutex_initialized = FALSE;
}
void
mono_marshal_lock_internal (void)
{
mono_marshal_lock ();
}
void
mono_marshal_unlock_internal (void)
{
mono_marshal_unlock ();
}
/* This is a JIT icall, it sets the pending exception and return NULL on error */
gpointer
mono_delegate_to_ftnptr (MonoDelegate *delegate_raw)
{
HANDLE_FUNCTION_ENTER ();
MonoError error;
MONO_HANDLE_DCL (MonoDelegate, delegate);
gpointer result = mono_delegate_handle_to_ftnptr (delegate, &error);
mono_error_set_pending_exception (&error);
HANDLE_FUNCTION_RETURN_VAL (result);
}
gpointer
mono_delegate_handle_to_ftnptr (MonoDelegateHandle delegate, MonoError *error)
{
HANDLE_FUNCTION_ENTER ();
gpointer result = NULL;
error_init (error);
MonoMethod *method, *wrapper;
MonoClass *klass;
uint32_t target_handle = 0;
if (MONO_HANDLE_IS_NULL (delegate))
goto leave;
if (MONO_HANDLE_GETVAL (delegate, delegate_trampoline)) {
result = MONO_HANDLE_GETVAL (delegate, delegate_trampoline);
goto leave;
}
klass = mono_handle_class (delegate);
g_assert (klass->delegate);
method = MONO_HANDLE_GETVAL (delegate, method);
if (MONO_HANDLE_GETVAL (delegate, method_is_virtual)) {
MonoObjectHandle delegate_target = MONO_HANDLE_NEW_GET (MonoObject, delegate, target);
method = mono_object_handle_get_virtual_method (delegate_target, method, error);
if (!is_ok (error))
goto leave;
}
if (method->flags & METHOD_ATTRIBUTE_PINVOKE_IMPL) {
const char *exc_class, *exc_arg;
gpointer ftnptr;
ftnptr = mono_lookup_pinvoke_call (method, &exc_class, &exc_arg);
if (!ftnptr) {
g_assert (exc_class);
mono_error_set_generic_error (error, "System", exc_class, "%s", exc_arg);
goto leave;
}
result = ftnptr;
goto leave;
}
MonoObjectHandle delegate_target = MONO_HANDLE_NEW_GET (MonoObject, delegate, target);
if (!MONO_HANDLE_IS_NULL (delegate_target)) {
/* Produce a location which can be embedded in JITted code */
target_handle = mono_gchandle_new_weakref (MONO_HANDLE_RAW (delegate_target), FALSE); /* FIXME: a version of mono_gchandle_new_weakref that takes a coop handle */
}
wrapper = mono_marshal_get_managed_wrapper (method, klass, target_handle, error);
if (!is_ok (error))
goto leave;
MONO_HANDLE_SETVAL (delegate, delegate_trampoline, gpointer, mono_compile_method_checked (wrapper, error));
if (!is_ok (error))
goto leave;
// Add the delegate to the delegate hash table
delegate_hash_table_add (delegate);
/* when the object is collected, collect the dynamic method, too */
mono_object_register_finalizer ((MonoObject*) MONO_HANDLE_RAW (delegate));
result = MONO_HANDLE_GETVAL (delegate, delegate_trampoline);
leave:
if (!is_ok (error) && target_handle != 0)
mono_gchandle_free (target_handle);
HANDLE_FUNCTION_RETURN_VAL (result);
}
/*
* this hash table maps from a delegate trampoline object to a weak reference
* of the delegate. As an optimizations with a non-moving GC we store the
* object pointer itself, otherwise we use a GC handle.
*/
static GHashTable *delegate_hash_table;
static GHashTable *
delegate_hash_table_new (void) {
return g_hash_table_new (NULL, NULL);
}
static void
delegate_hash_table_remove (MonoDelegate *d)
{
guint32 gchandle = 0;
mono_marshal_lock ();
if (delegate_hash_table == NULL)
delegate_hash_table = delegate_hash_table_new ();
if (mono_gc_is_moving ())
gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, d->delegate_trampoline));
g_hash_table_remove (delegate_hash_table, d->delegate_trampoline);
mono_marshal_unlock ();
if (gchandle && mono_gc_is_moving ())
mono_gchandle_free (gchandle);
}
static void
delegate_hash_table_add (MonoDelegateHandle d)
{
guint32 gchandle;
guint32 old_gchandle;
mono_marshal_lock ();
if (delegate_hash_table == NULL)
delegate_hash_table = delegate_hash_table_new ();
gpointer delegate_trampoline = MONO_HANDLE_GETVAL (d, delegate_trampoline);
if (mono_gc_is_moving ()) {
gchandle = mono_gchandle_new_weakref ((MonoObject*) MONO_HANDLE_RAW (d), FALSE);
old_gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, delegate_trampoline));
g_hash_table_insert (delegate_hash_table, delegate_trampoline, GUINT_TO_POINTER (gchandle));
if (old_gchandle)
mono_gchandle_free (old_gchandle);
} else {
g_hash_table_insert (delegate_hash_table, delegate_trampoline, MONO_HANDLE_RAW (d));
}
mono_marshal_unlock ();
}
/*
* mono_marshal_use_aot_wrappers:
*
* Instructs this module to use AOT compatible wrappers.
*/
void
mono_marshal_use_aot_wrappers (gboolean use)
{
use_aot_wrappers = use;
}
static void
parse_unmanaged_function_pointer_attr (MonoClass *klass, MonoMethodPInvoke *piinfo)
{
MonoError error;
MonoCustomAttrInfo *cinfo;
MonoReflectionUnmanagedFunctionPointerAttribute *attr;
/* The attribute is only available in Net 2.0 */
if (mono_class_try_get_unmanaged_function_pointer_attribute_class ()) {
/*
* The pinvoke attributes are stored in a real custom attribute so we have to
* construct it.
*/
cinfo = mono_custom_attrs_from_class_checked (klass, &error);
if (!mono_error_ok (&error)) {
g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
mono_error_cleanup (&error);
}
if (cinfo && !mono_runtime_get_no_exec ()) {
attr = (MonoReflectionUnmanagedFunctionPointerAttribute*)mono_custom_attrs_get_attr_checked (cinfo, mono_class_try_get_unmanaged_function_pointer_attribute_class (), &error);
if (attr) {
piinfo->piflags = (attr->call_conv << 8) | (attr->charset ? (attr->charset - 1) * 2 : 1) | attr->set_last_error;
} else {
if (!mono_error_ok (&error)) {
g_warning ("Could not load UnmanagedFunctionPointerAttribute due to %s", mono_error_get_message (&error));
mono_error_cleanup (&error);
}
}
if (!cinfo->cached)
mono_custom_attrs_free (cinfo);
}
}
}
/* This is a JIT icall, it sets the pending exception and returns NULL on error */
MonoDelegate*
mono_ftnptr_to_delegate (MonoClass *klass, gpointer ftn)
{
HANDLE_FUNCTION_ENTER ();
MonoError error;
MonoDelegateHandle result = mono_ftnptr_to_delegate_handle (klass, ftn, &error);
mono_error_set_pending_exception (&error);
HANDLE_FUNCTION_RETURN_OBJ (result);
}
MonoDelegateHandle
mono_ftnptr_to_delegate_handle (MonoClass *klass, gpointer ftn, MonoError *error)
{
HANDLE_FUNCTION_ENTER ();
error_init (error);
guint32 gchandle;
MonoDelegateHandle d = MONO_HANDLE_NEW (MonoDelegate, NULL);
if (ftn == NULL)
goto leave;
mono_marshal_lock ();
if (delegate_hash_table == NULL)
delegate_hash_table = delegate_hash_table_new ();
if (mono_gc_is_moving ()) {
gchandle = GPOINTER_TO_UINT (g_hash_table_lookup (delegate_hash_table, ftn));
mono_marshal_unlock ();
if (gchandle)
MONO_HANDLE_ASSIGN (d, MONO_HANDLE_CAST (MonoDelegate, mono_gchandle_get_target_handle (gchandle)));
} else {
MONO_HANDLE_ASSIGN (d, MONO_HANDLE_NEW (MonoDelegate, g_hash_table_lookup (delegate_hash_table, ftn)));
mono_marshal_unlock ();
}
if (MONO_HANDLE_IS_NULL (d)) {
/* This is a native function, so construct a delegate for it */
MonoMethodSignature *sig;
MonoMethod *wrapper;
MonoMarshalSpec **mspecs;
MonoMethod *invoke = mono_get_delegate_invoke (klass);
MonoMethodPInvoke piinfo;
MonoObjectHandle this_obj;
int i;
if (use_aot_wrappers) {
wrapper = mono_marshal_get_native_func_wrapper_aot (klass);
this_obj = MONO_HANDLE_NEW (MonoObject, mono_value_box_checked (mono_domain_get (), mono_defaults.int_class, &ftn, error));
if (!is_ok (error))
goto leave;
} else {
memset (&piinfo, 0, sizeof (piinfo));
parse_unmanaged_function_pointer_attr (klass, &piinfo);
mspecs = g_new0 (MonoMarshalSpec*, mono_method_signature (invoke)->param_count + 1);
mono_method_get_marshal_info (invoke, mspecs);
/* Freed below so don't alloc from mempool */
sig = mono_metadata_signature_dup (mono_method_signature (invoke));
sig->hasthis = 0;
wrapper = mono_marshal_get_native_func_wrapper (klass->image, sig, &piinfo, mspecs, ftn);
this_obj = MONO_HANDLE_NEW (MonoObject, NULL);
for (i = mono_method_signature (invoke)->param_count; i >= 0; i--)
if (mspecs [i])
mono_metadata_free_marshal_spec (mspecs [i]);
g_free (mspecs);
g_free (sig);
}
MONO_HANDLE_ASSIGN (d, MONO_HANDLE_NEW (MonoDelegate, mono_object_new_checked (mono_domain_get (), klass, error)));
if (!is_ok (error))
goto leave;
gpointer compiled_ptr = mono_compile_method_checked (wrapper, error);
if (!is_ok (error))
goto leave;
mono_delegate_ctor_with_method (MONO_HANDLE_CAST (MonoObject, d), this_obj, compiled_ptr, wrapper, error);
if (!is_ok (error))
goto leave;
}
g_assert (!MONO_HANDLE_IS_NULL (d));
if (MONO_HANDLE_DOMAIN (d) != mono_domain_get ())
mono_error_set_not_supported (error, "Delegates cannot be marshalled from native code into a domain other than their home domain");
leave:
HANDLE_FUNCTION_RETURN_REF (MonoDelegate, d);
}
void
mono_delegate_free_ftnptr (MonoDelegate *delegate)
{
MonoJitInfo *ji;
void *ptr;
delegate_hash_table_remove (delegate);
ptr = (gpointer)InterlockedExchangePointer (&delegate->delegate_trampoline, NULL);
if (!delegate->target) {
/* The wrapper method is shared between delegates -> no need to free it */
return;
}
if (ptr) {
uint32_t gchandle;
void **method_data;
MonoMethod *method;
ji = mono_jit_info_table_find (mono_domain_get (), (char *)mono_get_addr_from_ftnptr (ptr));
g_assert (ji);
method = mono_jit_info_get_method (ji);
method_data = (void **)((MonoMethodWrapper*)method)->method_data;
/*the target gchandle is the first entry after size and the wrapper itself.*/
gchandle = GPOINTER_TO_UINT (method_data [2]);
if (gchandle)
mono_gchandle_free (gchandle);
mono_runtime_free_method (mono_object_domain (delegate), method);
}
}
/* This is a JIT icall, it sets the pending exception and returns NULL on error */
static MonoString *
mono_string_from_byvalstr (const char *data, int max_len)
{
MonoError error;
MonoDomain *domain = mono_domain_get ();
int len = 0;
if (!data)
return NULL;
while (len < max_len - 1 && data [len])
len++;
MonoString *result = mono_string_new_len_checked (domain, data, len, &error);
mono_error_set_pending_exception (&error);
return result;
}
/* This is a JIT icall, it sets the pending exception and return NULL on error */
static MonoString *
mono_string_from_byvalwstr (gunichar2 *data, int max_len)
{
MonoError error;
MonoString *res = NULL;
MonoDomain *domain = mono_domain_get ();
int len = 0;
if (!data)
return NULL;
while (data [len]) len++;
res = mono_string_new_utf16_checked (domain, data, MIN (len, max_len), &error);
if (!mono_error_ok (&error)) {
mono_error_set_pending_exception (&error);
return NULL;
}
return res;
}
gpointer
mono_array_to_savearray (MonoArray *array)
{
if (!array)
return NULL;
g_assert_not_reached ();
return NULL;
}
gpointer
mono_array_to_lparray (MonoArray *array)
{
#ifndef DISABLE_COM
gpointer *nativeArray = NULL;
int nativeArraySize = 0;
int i = 0;
MonoClass *klass;
#endif
if (!array)
return NULL;
#ifndef DISABLE_COM
klass = array->obj.vtable->klass;
switch (klass->element_class->byval_arg.type) {
case MONO_TYPE_VOID:
g_assert_not_reached ();
break;
case MONO_TYPE_CLASS:
nativeArraySize = array->max_length;
nativeArray = (void **)malloc(sizeof(gpointer) * nativeArraySize);
for(i = 0; i < nativeArraySize; ++i)
nativeArray[i] = ves_icall_System_Runtime_InteropServices_Marshal_GetIUnknownForObjectInternal(((MonoObject **)array->vector)[i]);
return nativeArray;
case MONO_TYPE_U1:
case MONO_TYPE_BOOLEAN:
case MONO_TYPE_I1:
case MONO_TYPE_U2:
case MONO_TYPE_CHAR:
case MONO_TYPE_I2:
case MONO_TYPE_I:
case MONO_TYPE_U:
case MONO_TYPE_I4:
case MONO_TYPE_U4:
case MONO_TYPE_U8:
case MONO_TYPE_I8:
case MONO_TYPE_R4:
case MONO_TYPE_R8:
case MONO_TYPE_VALUETYPE:
case MONO_TYPE_PTR:
/* nothing to do */
break;
case MONO_TYPE_GENERICINST:
case MONO_TYPE_OBJECT:
case MONO_TYPE_ARRAY:
case MONO_TYPE_SZARRAY:
case MONO_TYPE_STRING:
default:
g_warning ("type 0x%x not handled", klass->element_class->byval_arg.type);
g_assert_not_reached ();
}
#endif
return array->vector;
}
void
mono_free_lparray (MonoArray *array, gpointer* nativeArray)
{
#ifndef DISABLE_COM
MonoClass *klass;
int i = 0;
if (!array)
return;
if (!nativeArray)
return;
klass = array->obj.vtable->klass;
if (klass->element_class->byval_arg.type == MONO_TYPE_CLASS) {
for(i = 0; i < array->max_length; ++i)
mono_marshal_free_ccw (mono_array_get (array, MonoObject*, i));
g_free (nativeArray);
}
#endif
}
static void
mono_byvalarray_to_array (MonoArray *arr, gpointer native_arr, MonoClass *elclass, guint32 elnum)
{
g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
if (elclass == mono_defaults.byte_class) {
GError *error = NULL;
guint16 *ut;
glong items_written;
ut = g_utf8_to_utf16 ((const gchar *)native_arr, elnum, NULL, &items_written, &error);
if (!error) {
memcpy (mono_array_addr (arr, guint16, 0), ut, items_written * sizeof (guint16));
g_free (ut);
}
else
g_error_free (error);
}
else
g_assert_not_reached ();
}
static void
mono_byvalarray_to_byte_array (MonoArray *arr, gpointer native_arr, guint32 elnum)
{
mono_byvalarray_to_array (arr, native_arr, mono_defaults.byte_class, elnum);
}
/* This is a JIT icall, it sets the pending exception and returns on error */
static void
mono_array_to_byvalarray (gpointer native_arr, MonoArray *arr, MonoClass *elclass, guint32 elnum)
{
g_assert (arr->obj.vtable->klass->element_class == mono_defaults.char_class);
if (elclass == mono_defaults.byte_class) {
char *as;
GError *error = NULL;
as = g_utf16_to_utf8 (mono_array_addr (arr, gunichar2, 0), mono_array_length (arr), NULL, NULL, &error);
if (error) {
mono_set_pending_exception (mono_get_exception_argument ("string", error->message));
g_error_free (error);
return;
}
memcpy (native_arr, as, MIN (strlen (as), elnum));
g_free (as);
} else {
g_assert_not_reached ();
}
}
static void
mono_array_to_byte_byvalarray (gpointer native_arr, MonoArray *arr, guint32 elnum)
{
mono_array_to_byvalarray (native_arr, arr, mono_defaults.byte_class, elnum);
}
static MonoStringBuilder *
mono_string_builder_new (int starting_string_length)
{
static MonoClass *string_builder_class;
static MonoMethod *sb_ctor;
static void *args [1];
MonoError error;
int initial_len = starting_string_length;
if (initial_len < 0)
initial_len = 0;
if (!sb_ctor) {
MonoMethodDesc *desc;
MonoMethod *m;
string_builder_class = mono_class_get_string_builder_class ();
g_assert (string_builder_class);
desc = mono_method_desc_new (":.ctor(int)", FALSE);
m = mono_method_desc_search_in_class (desc, string_builder_class);
g_assert (m);
mono_method_desc_free (desc);
mono_memory_barrier ();
sb_ctor = m;
}
// We make a new array in the _to_builder function, so this
// array will always be garbage collected.
args [0] = &initial_len;
MonoStringBuilder *sb = (MonoStringBuilder*)mono_object_new_checked (mono_domain_get (), string_builder_class, &error);
mono_error_assert_ok (&error);
MonoObject *exc;
mono_runtime_try_invoke (sb_ctor, sb, args, &exc, &error);
g_assert (exc == NULL);
mono_error_assert_ok (&error);
g_assert (sb->chunkChars->max_length >= initial_len);
return sb;
}
static void
mono_string_utf16_to_builder_copy (MonoStringBuilder *sb, gunichar2 *text, size_t string_len)
{
gunichar2 *charDst = (gunichar2 *)sb->chunkChars->vector;
gunichar2 *charSrc = (gunichar2 *)text;
memcpy (charDst, charSrc, sizeof (gunichar2) * string_len);
sb->chunkLength = string_len;
return;
}
MonoStringBuilder *
mono_string_utf16_to_builder2 (gunichar2 *text)
{
if (!text)
return NULL;
int len;
for (len = 0; text [len] != 0; ++len);
MonoStringBuilder *sb = mono_string_builder_new (len);
mono_string_utf16_to_builder (sb, text);
return sb;