1 //===-- ThreadList.h --------------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef liblldb_ThreadList_h_
11 #define liblldb_ThreadList_h_
16 #include "lldb/Target/Thread.h"
17 #include "lldb/Target/ThreadCollection.h"
18 #include "lldb/Utility/Iterable.h"
19 #include "lldb/Utility/UserID.h"
20 #include "lldb/lldb-private.h"
22 namespace lldb_private {
24 // This is a thread list with lots of functionality for use only by the process
25 // for which this is the thread list. A generic container class with iterator
26 // functionality is ThreadCollection.
27 class ThreadList : public ThreadCollection {
31 ThreadList(Process *process);
33 ThreadList(const ThreadList &rhs);
35 ~ThreadList() override;
37 const ThreadList &operator=(const ThreadList &rhs);
39 uint32_t GetSize(bool can_update = true);
41 // Return the selected thread if there is one. Otherwise, return the thread
42 // selected at index 0.
43 lldb::ThreadSP GetSelectedThread();
45 // Manage the thread to use for running expressions. This is usually the
47 // but sometimes (e.g. when evaluating breakpoint conditions & stop hooks) it
49 class ExpressionExecutionThreadPusher {
51 ExpressionExecutionThreadPusher(ThreadList &thread_list, lldb::tid_t tid)
52 : m_thread_list(&thread_list), m_tid(tid) {
53 m_thread_list->PushExpressionExecutionThread(m_tid);
56 ExpressionExecutionThreadPusher(lldb::ThreadSP thread_sp);
58 ~ExpressionExecutionThreadPusher() {
59 if (m_thread_list && m_tid != LLDB_INVALID_THREAD_ID)
60 m_thread_list->PopExpressionExecutionThread(m_tid);
64 ThreadList *m_thread_list;
68 lldb::ThreadSP GetExpressionExecutionThread();
71 void PushExpressionExecutionThread(lldb::tid_t tid);
73 void PopExpressionExecutionThread(lldb::tid_t tid);
76 bool SetSelectedThreadByID(lldb::tid_t tid, bool notify = false);
78 bool SetSelectedThreadByIndexID(uint32_t index_id, bool notify = false);
86 // Note that "idx" is not the same as the "thread_index". It is a zero
87 // based index to accessing the current threads, whereas "thread_index"
88 // is a unique index assigned
89 lldb::ThreadSP GetThreadAtIndex(uint32_t idx, bool can_update = true);
91 lldb::ThreadSP FindThreadByID(lldb::tid_t tid, bool can_update = true);
93 lldb::ThreadSP FindThreadByProtocolID(lldb::tid_t tid,
94 bool can_update = true);
96 lldb::ThreadSP RemoveThreadByID(lldb::tid_t tid, bool can_update = true);
98 lldb::ThreadSP RemoveThreadByProtocolID(lldb::tid_t tid,
99 bool can_update = true);
101 lldb::ThreadSP FindThreadByIndexID(uint32_t index_id, bool can_update = true);
103 lldb::ThreadSP GetThreadSPForThreadPtr(Thread *thread_ptr);
105 bool ShouldStop(Event *event_ptr);
107 Vote ShouldReportStop(Event *event_ptr);
109 Vote ShouldReportRun(Event *event_ptr);
111 void RefreshStateAfterStop();
113 //------------------------------------------------------------------
114 /// The thread list asks tells all the threads it is about to resume.
115 /// If a thread can "resume" without having to resume the target, it
116 /// will return false for WillResume, and then the process will not be
120 /// \b true instructs the process to resume normally,
121 /// \b false means start & stopped events will be generated, but
122 /// the process will not actually run. The thread must then return
123 /// the correct StopInfo when asked.
125 //------------------------------------------------------------------
132 void DiscardThreadPlans();
134 uint32_t GetStopID() const;
136 void SetStopID(uint32_t stop_id);
138 std::recursive_mutex &GetMutex() const override;
140 void Update(ThreadList &rhs);
143 void SetShouldReportStop(Vote vote);
145 void NotifySelectedThreadChanged(lldb::tid_t tid);
147 //------------------------------------------------------------------
148 // Classes that inherit from Process can see and modify these
149 //------------------------------------------------------------------
150 Process *m_process; ///< The process that manages this thread list.
152 m_stop_id; ///< The process stop ID that this thread list is valid for.
154 m_selected_tid; ///< For targets that need the notion of a current thread.
155 std::vector<lldb::tid_t> m_expression_tid_stack;
161 } // namespace lldb_private
163 #endif // liblldb_ThreadList_h_