2010-05-29 Robert Jordan <robertj@gmx.net>
[mono.git] / mono / metadata / profiler.c
index 97974bcbca3239cf1bc170954655f561b413d063..7e050c1ed3700622ba4b219a3df8cd3b47f32a1c 100644 (file)
 #include <execinfo.h>
 #endif
 
-static MonoProfiler * current_profiler = NULL;
-
-static MonoProfileAppDomainFunc   domain_start_load;
-static MonoProfileAppDomainResult domain_end_load;
-static MonoProfileAppDomainFunc   domain_start_unload;
-static MonoProfileAppDomainFunc   domain_end_unload;
-
-static MonoProfileAssemblyFunc   assembly_start_load;
-static MonoProfileAssemblyResult assembly_end_load;
-static MonoProfileAssemblyFunc   assembly_start_unload;
-static MonoProfileAssemblyFunc   assembly_end_unload;
-
-static MonoProfileModuleFunc   module_start_load;
-static MonoProfileModuleResult module_end_load;
-static MonoProfileModuleFunc   module_start_unload;
-static MonoProfileModuleFunc   module_end_unload;
-
-static MonoProfileClassFunc   class_start_load;
-static MonoProfileClassResult class_end_load;
-static MonoProfileClassFunc   class_start_unload;
-static MonoProfileClassFunc   class_end_unload;
-
-static MonoProfileMethodFunc   jit_start;
-static MonoProfileMethodResult jit_end;
-static MonoProfileJitResult    jit_end2;
-static MonoProfileMethodFunc   method_free;
-static MonoProfileMethodResult man_unman_transition;
-static MonoProfileAllocFunc    allocation_cb;
-static MonoProfileMonitorFunc  monitor_event_cb;
-static MonoProfileStatFunc     statistical_cb;
-static MonoProfileStatCallChainFunc statistical_call_chain_cb;
-static int                     statistical_call_chain_depth;
-static MonoProfilerCallChainStrategy  statistical_call_chain_strategy;
-static MonoProfileMethodFunc   method_enter;
-static MonoProfileMethodFunc   method_leave;
-
-static MonoProfileExceptionFunc        exception_throw_cb;
-static MonoProfileMethodFunc exception_method_leave_cb;
-static MonoProfileExceptionClauseFunc exception_clause_cb;
-
-static MonoProfileThreadFunc   thread_start;
-static MonoProfileThreadFunc   thread_end;
-
-static MonoProfileCoverageFilterFunc coverage_filter_cb;
-
-static MonoProfileFunc shutdown_callback;
-
-static MonoProfileGCFunc        gc_event;
-static MonoProfileGCResizeFunc  gc_heap_resize;
-
-static MonoProfileFunc          runtime_initialized_event;
+typedef struct _ProfilerDesc ProfilerDesc;
+struct _ProfilerDesc {
+       ProfilerDesc *next;
+       MonoProfiler *profiler;
+       MonoProfileFlags events;
+
+       MonoProfileAppDomainFunc   domain_start_load;
+       MonoProfileAppDomainResult domain_end_load;
+       MonoProfileAppDomainFunc   domain_start_unload;
+       MonoProfileAppDomainFunc   domain_end_unload;
+
+       MonoProfileAssemblyFunc   assembly_start_load;
+       MonoProfileAssemblyResult assembly_end_load;
+       MonoProfileAssemblyFunc   assembly_start_unload;
+       MonoProfileAssemblyFunc   assembly_end_unload;
+
+       MonoProfileModuleFunc   module_start_load;
+       MonoProfileModuleResult module_end_load;
+       MonoProfileModuleFunc   module_start_unload;
+       MonoProfileModuleFunc   module_end_unload;
+
+       MonoProfileClassFunc   class_start_load;
+       MonoProfileClassResult class_end_load;
+       MonoProfileClassFunc   class_start_unload;
+       MonoProfileClassFunc   class_end_unload;
+
+       MonoProfileMethodFunc   jit_start;
+       MonoProfileMethodResult jit_end;
+       MonoProfileJitResult    jit_end2;
+       MonoProfileMethodFunc   method_free;
+       MonoProfileMethodFunc   method_start_invoke;
+       MonoProfileMethodFunc   method_end_invoke;
+       MonoProfileMethodResult man_unman_transition;
+       MonoProfileAllocFunc    allocation_cb;
+       MonoProfileMonitorFunc  monitor_event_cb;
+       MonoProfileStatFunc     statistical_cb;
+       MonoProfileStatCallChainFunc statistical_call_chain_cb;
+       int                     statistical_call_chain_depth;
+       MonoProfilerCallChainStrategy  statistical_call_chain_strategy;
+       MonoProfileMethodFunc   method_enter;
+       MonoProfileMethodFunc   method_leave;
+
+       MonoProfileExceptionFunc        exception_throw_cb;
+       MonoProfileMethodFunc exception_method_leave_cb;
+       MonoProfileExceptionClauseFunc exception_clause_cb;
+
+       MonoProfileIomapFunc iomap_cb;
+
+       MonoProfileThreadFunc   thread_start;
+       MonoProfileThreadFunc   thread_end;
+
+       MonoProfileCoverageFilterFunc coverage_filter_cb;
+
+       MonoProfileFunc shutdown_callback;
+
+       MonoProfileGCFunc        gc_event;
+       MonoProfileGCResizeFunc  gc_heap_resize;
+       MonoProfileGCMoveFunc    gc_moves;
+
+       MonoProfileFunc          runtime_initialized_event;
+
+       MonoProfilerCodeChunkNew code_chunk_new;
+       MonoProfilerCodeChunkDestroy code_chunk_destroy;
+       MonoProfilerCodeBufferNew code_buffer_new;
+};
+
+static ProfilerDesc *prof_list = NULL;
 
 #define mono_profiler_coverage_lock() EnterCriticalSection (&profiler_coverage_mutex)
 #define mono_profiler_coverage_unlock() LeaveCriticalSection (&profiler_coverage_mutex)
 static CRITICAL_SECTION profiler_coverage_mutex;
 
-/* this is directly accessible to other mono libs. */
+/* this is directly accessible to other mono libs.
+ * It is the ORed value of all the profiler's events.
+ */
 MonoProfileFlags mono_profiler_events;
 
 /**
@@ -103,11 +121,13 @@ MonoProfileFlags mono_profiler_events;
 void
 mono_profiler_install (MonoProfiler *prof, MonoProfileFunc callback)
 {
-       if (current_profiler)
-               g_error ("profiler already setup");
-       current_profiler = prof;
-       shutdown_callback = callback;
-       InitializeCriticalSection (&profiler_coverage_mutex);
+       ProfilerDesc *desc = g_new0 (ProfilerDesc, 1);
+       if (!prof_list)
+               InitializeCriticalSection (&profiler_coverage_mutex);
+       desc->profiler = prof;
+       desc->shutdown_callback = callback;
+       desc->next = prof_list;
+       prof_list = desc;
 }
 
 /**
@@ -127,7 +147,13 @@ mono_profiler_install (MonoProfiler *prof, MonoProfileFunc callback)
 void
 mono_profiler_set_events (MonoProfileFlags events)
 {
-       mono_profiler_events = events;
+       ProfilerDesc *prof;
+       MonoProfileFlags value = 0;
+       if (prof_list)
+               prof_list->events = events;
+       for (prof = prof_list; prof; prof = prof->next)
+               value |= prof->events;
+       mono_profiler_events = value;
 }
 
 /**
@@ -153,8 +179,10 @@ mono_profiler_get_events (void)
 void
 mono_profiler_install_enter_leave (MonoProfileMethodFunc enter, MonoProfileMethodFunc fleave)
 {
-       method_enter = enter;
-       method_leave = fleave;
+       if (!prof_list)
+               return;
+       prof_list->method_enter = enter;
+       prof_list->method_leave = fleave;
 }
 
 /**
@@ -168,70 +196,97 @@ mono_profiler_install_enter_leave (MonoProfileMethodFunc enter, MonoProfileMetho
 void 
 mono_profiler_install_jit_compile (MonoProfileMethodFunc start, MonoProfileMethodResult end)
 {
-       jit_start = start;
-       jit_end = end;
+       if (!prof_list)
+               return;
+       prof_list->jit_start = start;
+       prof_list->jit_end = end;
 }
 
 void 
 mono_profiler_install_jit_end (MonoProfileJitResult end)
 {
-       jit_end2 = end;
+       if (!prof_list)
+               return;
+       prof_list->jit_end2 = end;
 }
 
 void 
 mono_profiler_install_method_free (MonoProfileMethodFunc callback)
 {
-       method_free = callback;
+       if (!prof_list)
+               return;
+       prof_list->method_free = callback;
+}
+
+void
+mono_profiler_install_method_invoke (MonoProfileMethodFunc start, MonoProfileMethodFunc end)
+{
+       if (!prof_list)
+               return;
+       prof_list->method_start_invoke = start;
+       prof_list->method_end_invoke = end;
 }
 
 void 
 mono_profiler_install_thread (MonoProfileThreadFunc start, MonoProfileThreadFunc end)
 {
-       thread_start = start;
-       thread_end = end;
+       if (!prof_list)
+               return;
+       prof_list->thread_start = start;
+       prof_list->thread_end = end;
 }
 
 void 
 mono_profiler_install_transition (MonoProfileMethodResult callback)
 {
-       man_unman_transition = callback;
+       if (!prof_list)
+               return;
+       prof_list->man_unman_transition = callback;
 }
 
 void 
 mono_profiler_install_allocation (MonoProfileAllocFunc callback)
 {
-       allocation_cb = callback;
+       if (!prof_list)
+               return;
+       prof_list->allocation_cb = callback;
 }
 
 void
 mono_profiler_install_monitor  (MonoProfileMonitorFunc callback)
 {
-       monitor_event_cb = callback;
+       if (!prof_list)
+               return;
+       prof_list->monitor_event_cb = callback;
 }
 
 void 
 mono_profiler_install_statistical (MonoProfileStatFunc callback)
 {
-       statistical_cb = callback;
+       if (!prof_list)
+               return;
+       prof_list->statistical_cb = callback;
 }
 
 void 
 mono_profiler_install_statistical_call_chain (MonoProfileStatCallChainFunc callback, int call_chain_depth, MonoProfilerCallChainStrategy call_chain_strategy) {
-       statistical_call_chain_cb = callback;
-       statistical_call_chain_depth = call_chain_depth;
-       if (statistical_call_chain_depth > MONO_PROFILER_MAX_STAT_CALL_CHAIN_DEPTH) {
-               statistical_call_chain_depth = MONO_PROFILER_MAX_STAT_CALL_CHAIN_DEPTH;
+       if (!prof_list)
+               return;
+       if (call_chain_depth > MONO_PROFILER_MAX_STAT_CALL_CHAIN_DEPTH) {
+               call_chain_depth = MONO_PROFILER_MAX_STAT_CALL_CHAIN_DEPTH;
        }
-       statistical_call_chain_strategy = call_chain_strategy;
-       if ((statistical_call_chain_strategy >= MONO_PROFILER_CALL_CHAIN_INVALID) || (statistical_call_chain_strategy < MONO_PROFILER_CALL_CHAIN_NONE)) {
-               statistical_call_chain_strategy = MONO_PROFILER_CALL_CHAIN_NONE;
+       if ((call_chain_strategy >= MONO_PROFILER_CALL_CHAIN_INVALID) || (call_chain_strategy < MONO_PROFILER_CALL_CHAIN_NONE)) {
+               call_chain_strategy = MONO_PROFILER_CALL_CHAIN_NONE;
        }
+       prof_list->statistical_call_chain_cb = callback;
+       prof_list->statistical_call_chain_depth = call_chain_depth;
+       prof_list->statistical_call_chain_strategy = call_chain_strategy;
 }
 
 int
 mono_profiler_stat_get_call_chain_depth (void) {
-       if (statistical_call_chain_cb != NULL) {
-               return statistical_call_chain_depth;
+       if (prof_list && prof_list->statistical_call_chain_cb != NULL) {
+               return prof_list->statistical_call_chain_depth;
        } else {
                return 0;
        }
@@ -239,8 +294,8 @@ mono_profiler_stat_get_call_chain_depth (void) {
 
 MonoProfilerCallChainStrategy
 mono_profiler_stat_get_call_chain_strategy (void) {
-       if (statistical_call_chain_cb != NULL) {
-               return statistical_call_chain_strategy;
+       if (prof_list && prof_list->statistical_call_chain_cb != NULL) {
+               return prof_list->statistical_call_chain_strategy;
        } else {
                return MONO_PROFILER_CALL_CHAIN_NONE;
        }
@@ -248,15 +303,19 @@ mono_profiler_stat_get_call_chain_strategy (void) {
 
 void mono_profiler_install_exception (MonoProfileExceptionFunc throw_callback, MonoProfileMethodFunc exc_method_leave, MonoProfileExceptionClauseFunc clause_callback)
 {
-       exception_throw_cb = throw_callback;
-       exception_method_leave_cb = exc_method_leave;
-       exception_clause_cb = clause_callback;
+       if (!prof_list)
+               return;
+       prof_list->exception_throw_cb = throw_callback;
+       prof_list->exception_method_leave_cb = exc_method_leave;
+       prof_list->exception_clause_cb = clause_callback;
 }
 
 void 
 mono_profiler_install_coverage_filter (MonoProfileCoverageFilterFunc callback)
 {
-       coverage_filter_cb = callback;
+       if (!prof_list)
+               return;
+       prof_list->coverage_filter_cb = callback;
 }
 
 void 
@@ -264,347 +323,521 @@ mono_profiler_install_appdomain   (MonoProfileAppDomainFunc start_load, MonoProf
                                    MonoProfileAppDomainFunc start_unload, MonoProfileAppDomainFunc end_unload)
 
 {
-       domain_start_load = start_load;
-       domain_end_load = end_load;
-       domain_start_unload = start_unload;
-       domain_end_unload = end_unload;
+       if (!prof_list)
+               return;
+       prof_list->domain_start_load = start_load;
+       prof_list->domain_end_load = end_load;
+       prof_list->domain_start_unload = start_unload;
+       prof_list->domain_end_unload = end_unload;
 }
 
 void 
 mono_profiler_install_assembly    (MonoProfileAssemblyFunc start_load, MonoProfileAssemblyResult end_load,
                                    MonoProfileAssemblyFunc start_unload, MonoProfileAssemblyFunc end_unload)
 {
-       assembly_start_load = start_load;
-       assembly_end_load = end_load;
-       assembly_start_unload = start_unload;
-       assembly_end_unload = end_unload;
+       if (!prof_list)
+               return;
+       prof_list->assembly_start_load = start_load;
+       prof_list->assembly_end_load = end_load;
+       prof_list->assembly_start_unload = start_unload;
+       prof_list->assembly_end_unload = end_unload;
 }
 
 void 
 mono_profiler_install_module      (MonoProfileModuleFunc start_load, MonoProfileModuleResult end_load,
                                    MonoProfileModuleFunc start_unload, MonoProfileModuleFunc end_unload)
 {
-       module_start_load = start_load;
-       module_end_load = end_load;
-       module_start_unload = start_unload;
-       module_end_unload = end_unload;
+       if (!prof_list)
+               return;
+       prof_list->module_start_load = start_load;
+       prof_list->module_end_load = end_load;
+       prof_list->module_start_unload = start_unload;
+       prof_list->module_end_unload = end_unload;
 }
 
 void
 mono_profiler_install_class       (MonoProfileClassFunc start_load, MonoProfileClassResult end_load,
                                    MonoProfileClassFunc start_unload, MonoProfileClassFunc end_unload)
 {
-       class_start_load = start_load;
-       class_end_load = end_load;
-       class_start_unload = start_unload;
-       class_end_unload = end_unload;
+       if (!prof_list)
+               return;
+       prof_list->class_start_load = start_load;
+       prof_list->class_end_load = end_load;
+       prof_list->class_start_unload = start_unload;
+       prof_list->class_end_unload = end_unload;
 }
 
 void
 mono_profiler_method_enter (MonoMethod *method)
 {
-       if ((mono_profiler_events & MONO_PROFILE_ENTER_LEAVE) && method_enter)
-               method_enter (current_profiler, method);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_ENTER_LEAVE) && prof->method_enter)
+                       prof->method_enter (prof->profiler, method);
+       }
 }
 
 void
 mono_profiler_method_leave (MonoMethod *method)
 {
-       if ((mono_profiler_events & MONO_PROFILE_ENTER_LEAVE) && method_leave)
-               method_leave (current_profiler, method);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_ENTER_LEAVE) && prof->method_leave)
+                       prof->method_leave (prof->profiler, method);
+       }
 }
 
 void 
 mono_profiler_method_jit (MonoMethod *method)
 {
-       if ((mono_profiler_events & MONO_PROFILE_JIT_COMPILATION) && jit_start)
-               jit_start (current_profiler, method);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_JIT_COMPILATION) && prof->jit_start)
+                       prof->jit_start (prof->profiler, method);
+       }
 }
 
 void 
 mono_profiler_method_end_jit (MonoMethod *method, MonoJitInfo* jinfo, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_JIT_COMPILATION)) {
-               if (jit_end)
-                       jit_end (current_profiler, method, result);
-               if (jit_end2)
-                       jit_end2 (current_profiler, method, jinfo, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_JIT_COMPILATION)) {
+                       if (prof->jit_end)
+                               prof->jit_end (prof->profiler, method, result);
+                       if (prof->jit_end2)
+                               prof->jit_end2 (prof->profiler, method, jinfo, result);
+               }
        }
 }
 
 void 
 mono_profiler_method_free (MonoMethod *method)
 {
-       if ((mono_profiler_events & MONO_PROFILE_METHOD_EVENTS) && method_free)
-               method_free (current_profiler, method);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_METHOD_EVENTS) && prof->method_free)
+                       prof->method_free (prof->profiler, method);
+       }
+}
+
+void
+mono_profiler_method_start_invoke (MonoMethod *method)
+{
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_METHOD_EVENTS) && prof->method_start_invoke)
+                       prof->method_start_invoke (prof->profiler, method);
+       }
+}
+
+void
+mono_profiler_method_end_invoke (MonoMethod *method)
+{
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_METHOD_EVENTS) && prof->method_end_invoke)
+                       prof->method_end_invoke (prof->profiler, method);
+       }
 }
 
 void 
 mono_profiler_code_transition (MonoMethod *method, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_TRANSITIONS) && man_unman_transition)
-               man_unman_transition (current_profiler, method, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_TRANSITIONS) && prof->man_unman_transition)
+                       prof->man_unman_transition (prof->profiler, method, result);
+       }
 }
 
 void 
 mono_profiler_allocation (MonoObject *obj, MonoClass *klass)
 {
-       if ((mono_profiler_events & MONO_PROFILE_ALLOCATIONS) && allocation_cb)
-               allocation_cb (current_profiler, obj, klass);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_ALLOCATIONS) && prof->allocation_cb)
+                       prof->allocation_cb (prof->profiler, obj, klass);
+       }
 }
 
 void
 mono_profiler_monitor_event      (MonoObject *obj, MonoProfilerMonitorEvent event) {
-       if ((mono_profiler_events & MONO_PROFILE_MONITOR_EVENTS) && monitor_event_cb) {
-               monitor_event_cb (current_profiler, obj, event);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_MONITOR_EVENTS) && prof->monitor_event_cb)
+                       prof->monitor_event_cb (prof->profiler, obj, event);
        }
 }
 
 void
 mono_profiler_stat_hit (guchar *ip, void *context)
 {
-       if ((mono_profiler_events & MONO_PROFILE_STATISTICAL) && statistical_cb)
-               statistical_cb (current_profiler, ip, context);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_STATISTICAL) && prof->statistical_cb)
+                       prof->statistical_cb (prof->profiler, ip, context);
+       }
 }
 
 void
 mono_profiler_stat_call_chain (int call_chain_depth, guchar **ips, void *context)
 {
-       if ((mono_profiler_events & MONO_PROFILE_STATISTICAL) && statistical_call_chain_cb)
-               statistical_call_chain_cb (current_profiler, call_chain_depth, ips, context);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_STATISTICAL) && prof->statistical_call_chain_cb)
+                       prof->statistical_call_chain_cb (prof->profiler, call_chain_depth, ips, context);
+       }
 }
 
 void
 mono_profiler_exception_thrown (MonoObject *exception)
 {
-       if ((mono_profiler_events & MONO_PROFILE_EXCEPTIONS) && exception_throw_cb)
-               exception_throw_cb (current_profiler, exception);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_EXCEPTIONS) && prof->exception_throw_cb)
+                       prof->exception_throw_cb (prof->profiler, exception);
+       }
 }
 
 void
 mono_profiler_exception_method_leave (MonoMethod *method)
 {
-       if ((mono_profiler_events & MONO_PROFILE_EXCEPTIONS) && exception_method_leave_cb)
-               exception_method_leave_cb (current_profiler, method);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_EXCEPTIONS) && prof->exception_method_leave_cb)
+                       prof->exception_method_leave_cb (prof->profiler, method);
+       }
 }
 
 void
 mono_profiler_exception_clause_handler (MonoMethod *method, int clause_type, int clause_num)
 {
-       if ((mono_profiler_events & MONO_PROFILE_EXCEPTIONS) && exception_clause_cb)
-               exception_clause_cb (current_profiler, method, clause_type, clause_num);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_EXCEPTIONS) && prof->exception_clause_cb)
+                       prof->exception_clause_cb (prof->profiler, method, clause_type, clause_num);
+       }
 }
 
 void
 mono_profiler_thread_start (gsize tid)
 {
-       if ((mono_profiler_events & MONO_PROFILE_THREADS) && thread_start)
-               thread_start (current_profiler, tid);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_THREADS) && prof->thread_start)
+                       prof->thread_start (prof->profiler, tid);
+       }
 }
 
 void 
 mono_profiler_thread_end (gsize tid)
 {
-       if ((mono_profiler_events & MONO_PROFILE_THREADS) && thread_end)
-               thread_end (current_profiler, tid);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_THREADS) && prof->thread_end)
+                       prof->thread_end (prof->profiler, tid);
+       }
 }
 
 void 
 mono_profiler_assembly_event  (MonoAssembly *assembly, int code)
 {
-       if (!(mono_profiler_events & MONO_PROFILE_ASSEMBLY_EVENTS))
-               return;
-       
-       switch (code) {
-       case MONO_PROFILE_START_LOAD:
-               if (assembly_start_load)
-                       assembly_start_load (current_profiler, assembly);
-               break;
-       case MONO_PROFILE_START_UNLOAD:
-               if (assembly_start_unload)
-                       assembly_start_unload (current_profiler, assembly);
-               break;
-       case MONO_PROFILE_END_UNLOAD:
-               if (assembly_end_unload)
-                       assembly_end_unload (current_profiler, assembly);
-               break;
-       default:
-               g_assert_not_reached ();
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (!(prof->events & MONO_PROFILE_ASSEMBLY_EVENTS))
+                       continue;
+
+               switch (code) {
+               case MONO_PROFILE_START_LOAD:
+                       if (prof->assembly_start_load)
+                               prof->assembly_start_load (prof->profiler, assembly);
+                       break;
+               case MONO_PROFILE_START_UNLOAD:
+                       if (prof->assembly_start_unload)
+                               prof->assembly_start_unload (prof->profiler, assembly);
+                       break;
+               case MONO_PROFILE_END_UNLOAD:
+                       if (prof->assembly_end_unload)
+                               prof->assembly_end_unload (prof->profiler, assembly);
+                       break;
+               default:
+                       g_assert_not_reached ();
+               }
        }
 }
 
 void 
 mono_profiler_assembly_loaded (MonoAssembly *assembly, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_ASSEMBLY_EVENTS) && assembly_end_load)
-               assembly_end_load (current_profiler, assembly, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_ASSEMBLY_EVENTS) && prof->assembly_end_load)
+                       prof->assembly_end_load (prof->profiler, assembly, result);
+       }
+}
+
+void mono_profiler_iomap (char *report, const char *pathname, const char *new_pathname)
+{
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_IOMAP_EVENTS) && prof->iomap_cb)
+                       prof->iomap_cb (prof->profiler, report, pathname, new_pathname);
+       }
 }
 
 void 
 mono_profiler_module_event  (MonoImage *module, int code)
 {
-       if (!(mono_profiler_events & MONO_PROFILE_MODULE_EVENTS))
-               return;
-       
-       switch (code) {
-       case MONO_PROFILE_START_LOAD:
-               if (module_start_load)
-                       module_start_load (current_profiler, module);
-               break;
-       case MONO_PROFILE_START_UNLOAD:
-               if (module_start_unload)
-                       module_start_unload (current_profiler, module);
-               break;
-       case MONO_PROFILE_END_UNLOAD:
-               if (module_end_unload)
-                       module_end_unload (current_profiler, module);
-               break;
-       default:
-               g_assert_not_reached ();
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (!(prof->events & MONO_PROFILE_MODULE_EVENTS))
+                       continue;
+
+               switch (code) {
+               case MONO_PROFILE_START_LOAD:
+                       if (prof->module_start_load)
+                               prof->module_start_load (prof->profiler, module);
+                       break;
+               case MONO_PROFILE_START_UNLOAD:
+                       if (prof->module_start_unload)
+                               prof->module_start_unload (prof->profiler, module);
+                       break;
+               case MONO_PROFILE_END_UNLOAD:
+                       if (prof->module_end_unload)
+                               prof->module_end_unload (prof->profiler, module);
+                       break;
+               default:
+                       g_assert_not_reached ();
+               }
        }
 }
 
 void 
 mono_profiler_module_loaded (MonoImage *module, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_MODULE_EVENTS) && module_end_load)
-               module_end_load (current_profiler, module, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_MODULE_EVENTS) && prof->module_end_load)
+                       prof->module_end_load (prof->profiler, module, result);
+       }
 }
 
 void 
 mono_profiler_class_event  (MonoClass *klass, int code)
 {
-       if (!(mono_profiler_events & MONO_PROFILE_CLASS_EVENTS))
-               return;
-       
-       switch (code) {
-       case MONO_PROFILE_START_LOAD:
-               if (class_start_load)
-                       class_start_load (current_profiler, klass);
-               break;
-       case MONO_PROFILE_START_UNLOAD:
-               if (class_start_unload)
-                       class_start_unload (current_profiler, klass);
-               break;
-       case MONO_PROFILE_END_UNLOAD:
-               if (class_end_unload)
-                       class_end_unload (current_profiler, klass);
-               break;
-       default:
-               g_assert_not_reached ();
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (!(prof->events & MONO_PROFILE_CLASS_EVENTS))
+                       continue;
+
+               switch (code) {
+               case MONO_PROFILE_START_LOAD:
+                       if (prof->class_start_load)
+                               prof->class_start_load (prof->profiler, klass);
+                       break;
+               case MONO_PROFILE_START_UNLOAD:
+                       if (prof->class_start_unload)
+                               prof->class_start_unload (prof->profiler, klass);
+                       break;
+               case MONO_PROFILE_END_UNLOAD:
+                       if (prof->class_end_unload)
+                               prof->class_end_unload (prof->profiler, klass);
+                       break;
+               default:
+                       g_assert_not_reached ();
+               }
        }
 }
 
 void 
 mono_profiler_class_loaded (MonoClass *klass, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_CLASS_EVENTS) && class_end_load)
-               class_end_load (current_profiler, klass, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_CLASS_EVENTS) && prof->class_end_load)
+                       prof->class_end_load (prof->profiler, klass, result);
+       }
 }
 
 void 
 mono_profiler_appdomain_event  (MonoDomain *domain, int code)
 {
-       if (!(mono_profiler_events & MONO_PROFILE_APPDOMAIN_EVENTS))
-               return;
-       
-       switch (code) {
-       case MONO_PROFILE_START_LOAD:
-               if (domain_start_load)
-                       domain_start_load (current_profiler, domain);
-               break;
-       case MONO_PROFILE_START_UNLOAD:
-               if (domain_start_unload)
-                       domain_start_unload (current_profiler, domain);
-               break;
-       case MONO_PROFILE_END_UNLOAD:
-               if (domain_end_unload)
-                       domain_end_unload (current_profiler, domain);
-               break;
-       default:
-               g_assert_not_reached ();
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (!(prof->events & MONO_PROFILE_APPDOMAIN_EVENTS))
+                       continue;
+
+               switch (code) {
+               case MONO_PROFILE_START_LOAD:
+                       if (prof->domain_start_load)
+                               prof->domain_start_load (prof->profiler, domain);
+                       break;
+               case MONO_PROFILE_START_UNLOAD:
+                       if (prof->domain_start_unload)
+                               prof->domain_start_unload (prof->profiler, domain);
+                       break;
+               case MONO_PROFILE_END_UNLOAD:
+                       if (prof->domain_end_unload)
+                               prof->domain_end_unload (prof->profiler, domain);
+                       break;
+               default:
+                       g_assert_not_reached ();
+               }
        }
 }
 
 void 
 mono_profiler_appdomain_loaded (MonoDomain *domain, int result)
 {
-       if ((mono_profiler_events & MONO_PROFILE_APPDOMAIN_EVENTS) && domain_end_load)
-               domain_end_load (current_profiler, domain, result);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_APPDOMAIN_EVENTS) && prof->domain_end_load)
+                       prof->domain_end_load (prof->profiler, domain, result);
+       }
 }
 
 void 
 mono_profiler_shutdown (void)
 {
-       if (current_profiler && shutdown_callback)
-               shutdown_callback (current_profiler);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (prof->shutdown_callback)
+                       prof->shutdown_callback (prof->profiler);
+       }
 }
 
 void
 mono_profiler_gc_heap_resize (gint64 new_size)
 {
-       if ((mono_profiler_events & MONO_PROFILE_GC) && gc_heap_resize)
-               gc_heap_resize (current_profiler, new_size);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_GC) && prof->gc_heap_resize)
+                       prof->gc_heap_resize (prof->profiler, new_size);
+       }
 }
 
 void
 mono_profiler_gc_event (MonoGCEvent event, int generation)
 {
-       if ((mono_profiler_events & MONO_PROFILE_GC) && gc_event)
-               gc_event (current_profiler, event, generation);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_GC) && prof->gc_event)
+                       prof->gc_event (prof->profiler, event, generation);
+       }
+}
+
+void
+mono_profiler_gc_moves (void **objects, int num)
+{
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if ((prof->events & MONO_PROFILE_GC_MOVES) && prof->gc_moves)
+                       prof->gc_moves (prof->profiler, objects, num);
+       }
 }
 
 void
 mono_profiler_install_gc (MonoProfileGCFunc callback, MonoProfileGCResizeFunc heap_resize_callback)
 {
        mono_gc_enable_events ();
-       gc_event = callback;
-       gc_heap_resize = heap_resize_callback;
+       if (!prof_list)
+               return;
+       prof_list->gc_event = callback;
+       prof_list->gc_heap_resize = heap_resize_callback;
+}
+
+/**
+ * mono_profiler_install_gc_moves:
+ * @callback: callback function
+ *
+ * Install the @callback function that the GC will call when moving objects.
+ * The callback receives an array of pointers and the number of elements
+ * in the array. Every even element in the array is the original object location
+ * and the following odd element is the new location of the object in memory.
+ * So the number of elements argument will always be a multiple of 2.
+ * Since this callback happens during the GC, it is a restricted environment:
+ * no locks can be taken and the object pointers can be inspected only once
+ * the GC is finished (of course the original location pointers will not
+ * point to valid objects anymore).
+ */
+void
+mono_profiler_install_gc_moves (MonoProfileGCMoveFunc callback)
+{
+       if (!prof_list)
+               return;
+       prof_list->gc_moves = callback;
 }
 
 void
 mono_profiler_install_runtime_initialized (MonoProfileFunc runtime_initialized_callback)
 {
-       runtime_initialized_event = runtime_initialized_callback;
+       if (!prof_list)
+               return;
+       prof_list->runtime_initialized_event = runtime_initialized_callback;
 }
 
 void
 mono_profiler_runtime_initialized (void) {
-       if (runtime_initialized_event)
-               runtime_initialized_event (current_profiler);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (prof->runtime_initialized_event)
+                       prof->runtime_initialized_event (prof->profiler);
+       }
 }
 
-static MonoProfilerCodeChunkNew code_chunk_new = NULL;
 void
 mono_profiler_install_code_chunk_new (MonoProfilerCodeChunkNew callback) {
-       code_chunk_new = callback;
+       if (!prof_list)
+               return;
+       prof_list->code_chunk_new = callback;
 }
 void
 mono_profiler_code_chunk_new (gpointer chunk, int size) {
-       if (code_chunk_new)
-               code_chunk_new (current_profiler, chunk, size);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (prof->code_chunk_new)
+                       prof->code_chunk_new (prof->profiler, chunk, size);
+       }
 }
 
-static MonoProfilerCodeChunkDestroy code_chunk_destroy = NULL;
 void
 mono_profiler_install_code_chunk_destroy (MonoProfilerCodeChunkDestroy callback) {
-       code_chunk_destroy = callback;
+       if (!prof_list)
+               return;
+       prof_list->code_chunk_destroy = callback;
 }
 void
 mono_profiler_code_chunk_destroy (gpointer chunk) {
-       if (code_chunk_destroy)
-               code_chunk_destroy (current_profiler, chunk);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (prof->code_chunk_destroy)
+                       prof->code_chunk_destroy (prof->profiler, chunk);
+       }
 }
 
-static MonoProfilerCodeBufferNew code_buffer_new = NULL;
 void
 mono_profiler_install_code_buffer_new (MonoProfilerCodeBufferNew callback) {
-       code_buffer_new = callback;
+       if (!prof_list)
+               return;
+       prof_list->code_buffer_new = callback;
+}
+
+void
+mono_profiler_install_iomap (MonoProfileIomapFunc callback)
+{
+       if (!prof_list)
+               return;
+       prof_list->iomap_cb = callback;
 }
+
 void
 mono_profiler_code_buffer_new (gpointer buffer, int size, MonoProfilerCodeBufferType type, void *data) {
-       if (code_buffer_new)
-               code_buffer_new (current_profiler, buffer, size, type, data);
+       ProfilerDesc *prof;
+       for (prof = prof_list; prof; prof = prof->next) {
+               if (prof->code_buffer_new)
+                       prof->code_buffer_new (prof->profiler, buffer, size, type, data);
+       }
 }
 
 static GHashTable *coverage_hash = NULL;
@@ -613,10 +846,19 @@ MonoProfileCoverageInfo*
 mono_profiler_coverage_alloc (MonoMethod *method, int entries)
 {
        MonoProfileCoverageInfo *res;
-
-       if (coverage_filter_cb)
-               if (! (*coverage_filter_cb) (current_profiler, method))
-                       return NULL;
+       int instrument = FALSE;
+       ProfilerDesc *prof;
+
+       for (prof = prof_list; prof; prof = prof->next) {
+               /* note that we call the filter on all the profilers even if just
+                * a single one would be enough to instrument a method
+                */
+               if (prof->coverage_filter_cb)
+                       if (prof->coverage_filter_cb (prof->profiler, method))
+                               instrument = TRUE;
+       }
+       if (!instrument)
+               return NULL;
 
        mono_profiler_coverage_lock ();
        if (!coverage_hash)
@@ -713,6 +955,7 @@ mono_profiler_coverage_get (MonoProfiler *prof, MonoMethod *method, MonoProfileC
                        g_free (fname);
                }
        }
+       mono_metadata_free_mh (header);
 }
 
 #ifndef DISABLE_PROFILER
@@ -1090,6 +1333,13 @@ output_callers (MethodProfile *p) {
        }
 }
 
+static int moved_objects = 0;
+static void
+simple_gc_move (MonoProfiler *prof, void **objects, int num)
+{
+       moved_objects += num / 2;
+}
+
 static void
 output_newobj_profile (GList *proflist)
 {
@@ -1137,6 +1387,7 @@ output_newobj_profile (GList *proflist)
                output_callers (mp);
        }
        fprintf (poutput, "Total memory allocated: %" G_GUINT64_FORMAT " KB\n", total / 1024);
+       fprintf (poutput, "Objects copied: %d\n", moved_objects);
 }
 
 static void
@@ -1523,7 +1774,7 @@ simple_shutdown (MonoProfiler *prof)
        char *str;
        gint32 see_shutdown_done;
 
-#ifndef PLATFORM_WIN32
+#ifndef HOST_WIN32
        mono_thread_attach(mono_get_root_domain());
 #endif
 
@@ -1610,6 +1861,8 @@ mono_profiler_install_simple (const char *desc)
                        }
                }
        }
+       if (flags & MONO_PROFILE_ALLOCATIONS)
+               flags |= MONO_PROFILE_GC_MOVES;
        if (flags & MONO_PROFILE_ALLOCATIONS)
                flags |= MONO_PROFILE_ENTER_LEAVE | MONO_PROFILE_EXCEPTIONS;
        if (!flags)
@@ -1630,6 +1883,7 @@ mono_profiler_install_simple (const char *desc)
        mono_profiler_install_allocation (simple_allocation);
        mono_profiler_install_appdomain (NULL, simple_appdomain_load, simple_appdomain_unload, NULL);
        mono_profiler_install_statistical (simple_stat_hit);
+       mono_profiler_install_gc_moves (simple_gc_move);
        mono_profiler_set_events (flags);
 }