2 * Appdomain-related internal data structures and functions.
3 * Copyright 2012 Xamarin Inc (http://www.xamarin.com)
4 * Licensed under the MIT license. See LICENSE file in the project root for full license information.
6 #ifndef __MONO_METADATA_DOMAIN_INTERNALS_H__
7 #define __MONO_METADATA_DOMAIN_INTERNALS_H__
9 #include <mono/metadata/appdomain.h>
10 #include <mono/metadata/mempool.h>
11 #include <mono/metadata/lock-tracer.h>
12 #include <mono/utils/mono-codeman.h>
13 #include <mono/metadata/mono-hash.h>
14 #include <mono/utils/mono-compiler.h>
15 #include <mono/utils/mono-internal-hash.h>
16 #include <mono/io-layer/io-layer.h>
17 #include <mono/metadata/mempool-internals.h>
20 * If this is set, the memory belonging to appdomains is not freed when a domain is
21 * unloaded, and assemblies loaded by the appdomain are not unloaded either. This
22 * allows us to use typed gc in non-default appdomains too, leading to increased
25 extern gboolean mono_dont_free_domains;
27 /* This is a copy of System.AppDomainSetup */
30 MonoString *application_base;
31 MonoString *application_name;
32 MonoString *cache_path;
33 MonoString *configuration_file;
34 MonoString *dynamic_base;
35 MonoString *license_file;
36 MonoString *private_bin_path;
37 MonoString *private_bin_path_probe;
38 MonoString *shadow_copy_directories;
39 MonoString *shadow_copy_files;
40 MonoBoolean publisher_policy;
41 MonoBoolean path_changed;
42 int loader_optimization;
43 MonoBoolean disallow_binding_redirects;
44 MonoBoolean disallow_code_downloads;
45 MonoObject *activation_arguments; /* it is System.Object in 1.x, ActivationArguments in 2.0 */
46 MonoObject *domain_initializer;
47 MonoObject *application_trust; /* it is System.Object in 1.x, ApplicationTrust in 2.0 */
48 MonoArray *domain_initializer_args;
49 MonoBoolean disallow_appbase_probe;
50 MonoArray *configuration_bytes;
51 MonoArray *serialized_non_primitives;
54 typedef struct _MonoJitInfoTable MonoJitInfoTable;
55 typedef struct _MonoJitInfoTableChunk MonoJitInfoTableChunk;
57 #define MONO_JIT_INFO_TABLE_CHUNK_SIZE 64
59 struct _MonoJitInfoTableChunk
62 volatile int num_elements;
63 volatile gint8 *last_code_end;
64 MonoJitInfo *next_tombstone;
65 MonoJitInfo * volatile data [MONO_JIT_INFO_TABLE_CHUNK_SIZE];
68 struct _MonoJitInfoTable
72 MonoJitInfoTableChunk *chunks [MONO_ZERO_LEN_ARRAY];
75 #define MONO_SIZEOF_JIT_INFO_TABLE (sizeof (struct _MonoJitInfoTable) - MONO_ZERO_LEN_ARRAY * SIZEOF_VOID_P)
77 typedef GArray MonoAotModuleInfoTable;
84 gpointer handler_start;
86 * For LLVM compiled code, this is the index of the il clause
87 * associated with this handler.
92 uint32_t handler_offset;
95 MonoClass *catch_class;
99 } MonoJitExceptionInfo;
102 * Contains information about the type arguments for generic shared methods.
105 gboolean is_gsharedvt;
106 } MonoGenericSharingContext;
108 /* Simplified DWARF location list entry */
110 /* Whenever the value is in a register */
113 * If is_reg is TRUE, the register which contains the value. Otherwise
118 * If is_reg is FALSE, the offset of the stack location relative to 'reg'.
123 * Offsets of the PC interval where the value is in this location.
126 } MonoDwarfLocListEntry;
130 MonoGenericSharingContext *generic_sharing_context;
132 MonoDwarfLocListEntry *locations;
136 gboolean this_in_reg:1;
137 } MonoGenericJitInfo;
140 A try block hole is used to represent a non-contiguous part of
141 of a segment of native code protected by a given .try block.
142 Usually, a try block is defined as a contiguous segment of code.
143 But in some cases it's needed to have some parts of it to not be protected.
144 For example, given "try {} finally {}", the code in the .try block to call
145 the finally part looks like:
151 jump outside try block
157 The instructions between the call and the jump should not be under the try block since they happen
158 after the finally block executes, which means if an async exceptions happens at that point we would
159 execute the finally clause twice. So, to avoid this, we introduce a hole in the try block to signal
160 that those instructions are not protected.
167 } MonoTryBlockHoleJitInfo;
172 MonoTryBlockHoleJitInfo holes [MONO_ZERO_LEN_ARRAY];
173 } MonoTryBlockHoleTableJitInfo;
182 /* Relative to code_start */
189 JIT_INFO_HAS_GENERIC_JIT_INFO = (1 << 0),
190 JIT_INFO_HAS_TRY_BLOCK_HOLES = (1 << 1),
191 JIT_INFO_HAS_ARCH_EH_INFO = (1 << 2),
192 JIT_INFO_HAS_THUNK_INFO = (1 << 3)
195 struct _MonoJitInfo {
196 /* NOTE: These first two elements (method and
197 next_jit_code_hash) must be in the same order and at the
198 same offset as in RuntimeMethod, because of the jit_code_hash
199 internal hash table in MonoDomain. */
207 struct _MonoJitInfo *next_jit_code_hash;
208 struct _MonoJitInfo *next_tombstone;
213 guint32 num_clauses:15;
214 /* Whenever the code is domain neutral or 'shared' */
215 gboolean domain_neutral:1;
216 gboolean has_generic_jit_info:1;
217 gboolean has_try_block_holes:1;
218 gboolean has_arch_eh_info:1;
219 gboolean has_thunk_info:1;
221 gboolean from_llvm:1;
222 gboolean dbg_attrs_inited:1;
223 gboolean dbg_hidden:1;
224 /* Whenever this jit info was loaded in async context */
226 gboolean dbg_step_through:1;
227 gboolean dbg_non_user_code:1;
229 * Whenever this jit info refers to a trampoline.
230 * d.tramp_info contains additional data in this case.
232 gboolean is_trampoline:1;
234 /* FIXME: Embed this after the structure later*/
235 gpointer gc_info; /* Currently only used by SGen */
237 MonoJitExceptionInfo clauses [MONO_ZERO_LEN_ARRAY];
238 /* There is an optional MonoGenericJitInfo after the clauses */
239 /* There is an optional MonoTryBlockHoleTableJitInfo after MonoGenericJitInfo clauses*/
240 /* There is an optional MonoArchEHJitInfo after MonoTryBlockHoleTableJitInfo */
241 /* There is an optional MonoThunkJitInfo after MonoArchEHJitInfo */
244 #define MONO_SIZEOF_JIT_INFO (offsetof (struct _MonoJitInfo, clauses))
247 gpointer *static_data; /* Used to free the static data without going through the MonoAppContext object itself. */
251 struct _MonoAppContext {
255 gpointer *static_data;
256 ContextStaticData *data;
259 /* Lock-free allocator */
264 } LockFreeMempoolChunk;
267 LockFreeMempoolChunk *current, *chunks;
271 * We have two unloading states because the domain
272 * must remain fully functional while AppDomain::DomainUnload is
274 * After that unloading began and all domain facilities are teared down
275 * such as execution of new threadpool jobs.
278 MONO_APPDOMAIN_CREATED,
279 MONO_APPDOMAIN_UNLOADING_START,
280 MONO_APPDOMAIN_UNLOADING,
281 MONO_APPDOMAIN_UNLOADED
282 } MonoAppDomainState;
284 typedef struct _MonoThunkFreeList {
286 int length; /* only valid for the wait list */
287 struct _MonoThunkFreeList *next;
290 typedef struct _MonoJitCodeHash MonoJitCodeHash;
294 * This lock must never be taken before the loader lock,
295 * i.e. if both are taken by the same thread, the loader lock
300 MonoCodeManager *code_mp;
302 * keep all the managed objects close to each other for the precise GC
303 * For the Boehm GC we additionally keep close also other GC-tracked pointers.
305 #define MONO_DOMAIN_FIRST_OBJECT setup
306 MonoAppDomainSetup *setup;
307 MonoAppDomain *domain;
308 MonoAppContext *default_context;
309 MonoException *out_of_memory_ex;
310 MonoException *null_reference_ex;
311 MonoException *stack_overflow_ex;
313 MonoObject *typeof_void;
314 /* Ephemeron Tombstone*/
315 MonoObject *ephemeron_tombstone;
316 /* new MonoType [0] */
317 MonoArray *empty_types;
319 * The fields between FIRST_GC_TRACKED and LAST_GC_TRACKED are roots, but
320 * not object references.
322 #define MONO_DOMAIN_FIRST_GC_TRACKED env
324 MonoGHashTable *ldstr_table;
325 /* hashtables for Reflection handles */
326 MonoGHashTable *type_hash;
327 MonoGHashTable *refobject_hash;
329 * A GC-tracked array to keep references to the static fields of types.
330 * See note [Domain Static Data Array].
332 gpointer *static_data_array;
333 /* maps class -> type initialization exception object */
334 MonoGHashTable *type_init_exception_hash;
335 /* maps delegate trampoline addr -> delegate object */
336 MonoGHashTable *delegate_hash_table;
337 #define MONO_DOMAIN_LAST_GC_TRACKED delegate_hash_table
339 /* Needed by Thread:GetDomainID() */
341 gint32 shadow_serial;
342 GSList *domain_assemblies;
343 MonoAssembly *entry_assembly;
345 GPtrArray *class_vtable_array;
346 /* maps remote class key -> MonoRemoteClass */
347 GHashTable *proxy_vtable_hash;
348 /* Protected by 'jit_code_hash_lock' */
349 MonoInternalHashTable jit_code_hash;
350 mono_mutex_t jit_code_hash_lock;
351 int num_jit_info_tables;
353 volatile jit_info_table;
355 * Contains information about AOT loaded code.
356 * Only used in the root domain.
359 volatile aot_modules;
360 GSList *jit_info_free_queue;
361 /* Used when loading assemblies */
363 gchar *private_bin_path;
364 LockFreeMempool *lock_free_mp;
366 /* Used by remoting proxies */
367 MonoMethod *create_proxy_for_type_method;
368 MonoMethod *private_invoke_method;
369 /* Used to store offsets of thread and context static fields */
370 GHashTable *special_static_fields;
372 * This must be a GHashTable, since these objects can't be finalized
373 * if the hashtable contains a GC visible reference to them.
375 GHashTable *finalizable_objects_hash;
377 /* Protects the three hashes above */
378 mono_mutex_t finalizable_objects_hash_lock;
379 /* Used when accessing 'domain_assemblies' */
380 mono_mutex_t assemblies_lock;
382 GHashTable *method_rgctx_hash;
384 GHashTable *generic_virtual_cases;
386 /* Information maintained by the JIT engine */
387 gpointer runtime_info;
389 /*thread pool jobs, used to coordinate shutdown.*/
390 volatile int threadpool_jobs;
391 gpointer cleanup_semaphore;
393 /* Contains the compiled runtime invoke wrapper used by finalizers */
394 gpointer finalize_runtime_invoke;
396 /* Contains the compiled runtime invoke wrapper used by async resylt creation to capture thread context*/
397 gpointer capture_context_runtime_invoke;
399 /* Contains the compiled method used by async resylt creation to capture thread context*/
400 gpointer capture_context_method;
402 /* Assembly bindings, the per-domain part */
403 GSList *assembly_bindings;
404 gboolean assembly_bindings_parsed;
406 /* Used by socket-io.c */
407 /* These are domain specific, since the assembly can be unloaded */
408 MonoImage *socket_assembly;
409 MonoClass *sockaddr_class;
410 MonoClassField *sockaddr_data_field;
411 MonoClassField *sockaddr_data_length_field;
413 /* Cache function pointers for architectures */
414 /* that require wrappers */
415 GHashTable *ftnptrs_hash;
417 /* Maps MonoMethod* to weak links to DynamicMethod objects */
418 GHashTable *method_to_dyn_method;
420 /* <ThrowUnobservedTaskExceptions /> support */
421 gboolean throw_unobserved_task_exceptions;
423 guint32 execution_context_field_offset;
427 guint16 major, minor, build, revision;
428 } AssemblyVersionSet;
430 /* MonoRuntimeInfo: Contains information about versions supported by this runtime */
432 const char runtime_version [12];
433 const char framework_version [4];
434 const AssemblyVersionSet version_sets [4];
437 #define mono_domain_assemblies_lock(domain) mono_locks_os_acquire(&(domain)->assemblies_lock, DomainAssembliesLock)
438 #define mono_domain_assemblies_unlock(domain) mono_locks_os_release(&(domain)->assemblies_lock, DomainAssembliesLock)
439 #define mono_domain_jit_code_hash_lock(domain) mono_locks_os_acquire(&(domain)->jit_code_hash_lock, DomainJitCodeHashLock)
440 #define mono_domain_jit_code_hash_unlock(domain) mono_locks_os_release(&(domain)->jit_code_hash_lock, DomainJitCodeHashLock)
442 typedef MonoDomain* (*MonoLoadFunc) (const char *filename, const char *runtime_version);
444 void mono_domain_lock (MonoDomain *domain) MONO_LLVM_INTERNAL;
445 void mono_domain_unlock (MonoDomain *domain) MONO_LLVM_INTERNAL;
448 mono_install_runtime_load (MonoLoadFunc func);
451 mono_runtime_load (const char *filename, const char *runtime_version);
453 typedef void (*MonoCreateDomainFunc) (MonoDomain *domain);
456 mono_install_create_domain_hook (MonoCreateDomainFunc func);
458 typedef void (*MonoFreeDomainFunc) (MonoDomain *domain);
461 mono_install_free_domain_hook (MonoFreeDomainFunc func);
467 mono_close_exe_image (void);
470 mono_jit_info_size (MonoJitInfoFlags flags, int num_clauses, int num_holes);
473 mono_jit_info_init (MonoJitInfo *ji, MonoMethod *method, guint8 *code, int code_size,
474 MonoJitInfoFlags flags, int num_clauses, int num_holes);
477 mono_jit_info_table_new (MonoDomain *domain);
480 mono_jit_info_table_free (MonoJitInfoTable *table);
483 mono_jit_info_table_add (MonoDomain *domain, MonoJitInfo *ji);
486 mono_jit_info_table_remove (MonoDomain *domain, MonoJitInfo *ji);
489 mono_jit_info_add_aot_module (MonoImage *image, gpointer start, gpointer end);
492 mono_jit_info_get_generic_jit_info (MonoJitInfo *ji);
494 MonoGenericSharingContext*
495 mono_jit_info_get_generic_sharing_context (MonoJitInfo *ji);
498 mono_jit_info_set_generic_sharing_context (MonoJitInfo *ji, MonoGenericSharingContext *gsctx);
501 mono_make_shadow_copy (const char *filename, MonoError *error);
504 mono_is_shadow_copy_enabled (MonoDomain *domain, const gchar *dir_name);
507 mono_domain_alloc (MonoDomain *domain, guint size);
510 mono_domain_alloc0 (MonoDomain *domain, guint size);
513 mono_domain_alloc0_lock_free (MonoDomain *domain, guint size);
516 mono_domain_code_reserve (MonoDomain *domain, int size) MONO_LLVM_INTERNAL;
519 mono_domain_code_reserve_align (MonoDomain *domain, int size, int alignment);
522 mono_domain_code_commit (MonoDomain *domain, void *data, int size, int newsize);
525 mono_domain_code_foreach (MonoDomain *domain, MonoCodeManagerFunc func, void *user_data);
528 mono_domain_unset (void);
531 mono_domain_set_internal_with_options (MonoDomain *domain, gboolean migrate_exception);
533 MonoTryBlockHoleTableJitInfo*
534 mono_jit_info_get_try_block_hole_table_info (MonoJitInfo *ji);
537 mono_jit_info_get_arch_eh_info (MonoJitInfo *ji);
540 mono_jit_info_get_thunk_info (MonoJitInfo *ji);
543 * Installs a new function which is used to return a MonoJitInfo for a method inside
546 typedef MonoJitInfo *(*MonoJitInfoFindInAot) (MonoDomain *domain, MonoImage *image, gpointer addr);
547 void mono_install_jit_info_find_in_aot (MonoJitInfoFindInAot func);
550 mono_jit_code_hash_init (MonoInternalHashTable *jit_code_hash);
553 ves_icall_System_AppDomain_getCurDomain (void);
556 ves_icall_System_AppDomain_getRootDomain (void);
559 ves_icall_System_AppDomain_createDomain (MonoString *friendly_name,
560 MonoAppDomainSetup *setup);
563 ves_icall_System_AppDomain_GetData (MonoAppDomain *ad,
566 MonoReflectionAssembly *
567 ves_icall_System_AppDomain_LoadAssemblyRaw (MonoAppDomain *ad,
568 MonoArray *raw_assembly,
569 MonoArray *raw_symbol_store,
570 MonoObject *evidence,
571 MonoBoolean refonly);
574 ves_icall_System_AppDomain_SetData (MonoAppDomain *ad,
579 ves_icall_System_AppDomain_getSetup (MonoAppDomain *ad);
582 ves_icall_System_AppDomain_getFriendlyName (MonoAppDomain *ad);
585 ves_icall_System_AppDomain_GetAssemblies (MonoAppDomain *ad,
586 MonoBoolean refonly);
588 MonoReflectionAssembly *
589 ves_icall_System_Reflection_Assembly_LoadFrom (MonoString *fname,
590 MonoBoolean refonly);
592 MonoReflectionAssembly *
593 ves_icall_System_AppDomain_LoadAssembly (MonoAppDomain *ad,
595 MonoObject *evidence,
596 MonoBoolean refonly);
599 ves_icall_System_AppDomain_InternalIsFinalizingForUnload (gint32 domain_id);
602 ves_icall_System_AppDomain_InternalUnload (gint32 domain_id);
605 ves_icall_System_AppDomain_DoUnhandledException (MonoException *exc);
608 ves_icall_System_AppDomain_ExecuteAssembly (MonoAppDomain *ad,
609 MonoReflectionAssembly *refass,
613 ves_icall_System_AppDomain_InternalSetDomain (MonoAppDomain *ad);
616 ves_icall_System_AppDomain_InternalSetDomainByID (gint32 domainid);
619 ves_icall_System_AppDomain_InternalPushDomainRef (MonoAppDomain *ad);
622 ves_icall_System_AppDomain_InternalPushDomainRefByID (gint32 domain_id);
625 ves_icall_System_AppDomain_InternalPopDomainRef (void);
628 ves_icall_System_AppDomain_InternalGetContext (void);
631 ves_icall_System_AppDomain_InternalGetDefaultContext (void);
634 ves_icall_System_AppDomain_InternalSetContext (MonoAppContext *mc);
637 ves_icall_System_AppDomain_GetIDFromDomain (MonoAppDomain * ad);
640 ves_icall_System_AppDomain_InternalGetProcessGuid (MonoString* newguid);
643 ves_icall_System_CLRConfig_CheckThrowUnobservedTaskExceptions (void);
646 mono_assembly_load_corlib (const MonoRuntimeInfo *runtime, MonoImageOpenStatus *status);
648 const MonoRuntimeInfo*
649 mono_get_runtime_info (void);
652 mono_runtime_set_no_exec (gboolean val);
655 mono_runtime_get_no_exec (void);
658 mono_assembly_name_parse (const char *name, MonoAssemblyName *aname);
660 MonoImage *mono_assembly_open_from_bundle (const char *filename,
661 MonoImageOpenStatus *status,
665 mono_domain_add_class_static_data (MonoDomain *domain, MonoClass *klass, gpointer data, guint32 *bitmap);
667 MonoReflectionAssembly *
668 mono_try_assembly_resolve (MonoDomain *domain, MonoString *fname, MonoAssembly *requesting, gboolean refonly, MonoError *error);
671 mono_domain_assembly_postload_search (MonoAssemblyName *aname, MonoAssembly *requesting, gboolean refonly);
673 MonoAssembly* mono_assembly_load_full_nosearch (MonoAssemblyName *aname,
675 MonoImageOpenStatus *status,
678 void mono_domain_set_options_from_config (MonoDomain *domain);
680 int mono_framework_version (void);
682 void mono_reflection_cleanup_domain (MonoDomain *domain);
684 void mono_assembly_cleanup_domain_bindings (guint32 domain_id);
686 MonoJitInfo* mono_jit_info_table_find_internal (MonoDomain *domain, char *addr, gboolean try_aot, gboolean allow_trampolines);
688 void mono_enable_debug_domain_unload (gboolean enable);
690 MonoReflectionAssembly *
691 mono_domain_try_type_resolve_checked (MonoDomain *domain, char *name, MonoObject *tb, MonoError *error);
694 mono_runtime_init_checked (MonoDomain *domain, MonoThreadStartCB start_cb, MonoThreadAttachCB attach_cb, MonoError *error);
697 mono_context_init_checked (MonoDomain *domain, MonoError *error);
700 mono_assembly_has_reference_assembly_attribute (MonoAssembly *assembly, MonoError *error);
703 #endif /* __MONO_METADATA_DOMAIN_INTERNALS_H__ */