Track async causal stack traces

runtime/vm/thread.h

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_THREAD_H_
 #define RUNTIME_VM_THREAD_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 26 matching lines @@
 class LongJumpScope;
 class Object;
 class OSThread;
 class JSONObject;
 class PcDescriptors;
 class RawBool;
 class RawObject;
 class RawCode;
 class RawError;
 class RawGrowableObjectArray;
+class RawStackTrace;
 class RawString;
 class RuntimeEntry;
 class Smi;
 class StackResource;
+class StackTrace;
 class String;
 class TimelineStream;
 class TypeArguments;
 class TypeParameter;
 class Zone;
 
 #define REUSABLE_HANDLE_LIST(V)                                                \
   V(AbstractType)                                                              \
   V(Array)                                                                     \
   V(Class)                                                                     \
@@ skipping 437 matching lines @@
   }
 
   uword resume_pc() const { return resume_pc_; }
   void set_resume_pc(uword value) { resume_pc_ = value; }
   static uword resume_pc_offset() { return OFFSET_OF(Thread, resume_pc_); }
 
   RawError* sticky_error() const;
   void set_sticky_error(const Error& value);
   void clear_sticky_error();
 
+  RawStackTrace* async_stack_trace() const;
+  void set_async_stack_trace(const StackTrace& stack_trace);
+  void clear_async_stack_trace();
+  static intptr_t async_stack_trace_offset() {
+    return OFFSET_OF(Thread, async_stack_trace_);
+  }
+
   CompilerStats* compiler_stats() { return compiler_stats_; }
 
 #if defined(DEBUG)
 #define REUSABLE_HANDLE_SCOPE_ACCESSORS(object)                                \
   void set_reusable_##object##_handle_scope_active(bool value) {               \
     reusable_##object##_handle_scope_active_ = value;                          \
   }                                                                            \
   bool reusable_##object##_handle_scope_active() const {                       \
     return reusable_##object##_handle_scope_active_;                           \
   }
@@ skipping 157 matching lines @@
 
   // Accessed from generated code:
   uword stack_limit_;
   uword stack_overflow_flags_;
   Isolate* isolate_;
   Heap* heap_;
   uword top_exit_frame_info_;
   StoreBufferBlock* store_buffer_block_;
   uword vm_tag_;
   TaskKind task_kind_;
+  RawStackTrace* async_stack_trace_;
 // State that is cached in the TLS for fast access in generated code.
 #define DECLARE_MEMBERS(type_name, member_name, expr, default_init_value)      \
   type_name member_name;
   CACHED_CONSTANTS_LIST(DECLARE_MEMBERS)
 #undef DECLARE_MEMBERS
 
 #define DECLARE_MEMBERS(name) uword name##_entry_point_;
   RUNTIME_ENTRY_LIST(DECLARE_MEMBERS)
 #undef DECLARE_MEMBERS
 
@@ skipping 105 matching lines @@
 // Disable thread interrupts.
 class DisableThreadInterruptsScope : public StackResource {
  public:
   explicit DisableThreadInterruptsScope(Thread* thread);
   ~DisableThreadInterruptsScope();
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_THREAD_H_