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BreakpointLocationCollection.cpp
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1//===-- BreakpointLocationCollection.cpp ----------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
13#include "lldb/Target/Thread.h"
15
16using namespace lldb;
17using namespace lldb_private;
18
19// BreakpointLocationCollection constructor
21
22// Destructor
24
26 std::lock_guard<std::mutex> guard(m_collection_mutex);
27 BreakpointLocationSP old_bp_loc =
28 FindByIDPair(bp_loc->GetBreakpoint().GetID(), bp_loc->GetID());
29 if (!old_bp_loc.get())
30 m_break_loc_collection.push_back(bp_loc);
31}
32
34 lldb::break_id_t bp_loc_id) {
35 std::lock_guard<std::mutex> guard(m_collection_mutex);
36 collection::iterator pos = GetIDPairIterator(bp_id, bp_loc_id); // Predicate
37 if (pos != m_break_loc_collection.end()) {
38 m_break_loc_collection.erase(pos);
39 return true;
40 }
41 return false;
42}
43
45public:
47 lldb::break_id_t break_loc_id)
48 : m_break_id(break_id), m_break_loc_id(break_loc_id) {}
49
50 bool operator()(const BreakpointLocationSP &bp_loc) const {
51 return m_break_id == bp_loc->GetBreakpoint().GetID() &&
52 m_break_loc_id == bp_loc->GetID();
53 }
54
55private:
58};
59
60BreakpointLocationCollection::collection::iterator
62 lldb::break_id_t break_loc_id) {
63 return std::find_if(
65 m_break_loc_collection.end(), // Search full range
66 BreakpointIDPairMatches(break_id, break_loc_id)); // Predicate
67}
68
69BreakpointLocationCollection::collection::const_iterator
71 lldb::break_id_t break_id, lldb::break_id_t break_loc_id) const {
72 return std::find_if(
74 m_break_loc_collection.end(), // Search full range
75 BreakpointIDPairMatches(break_id, break_loc_id)); // Predicate
76}
77
80 lldb::break_id_t break_loc_id) {
82 collection::iterator pos = GetIDPairIterator(break_id, break_loc_id);
83 if (pos != m_break_loc_collection.end())
84 stop_sp = *pos;
85
86 return stop_sp;
87}
88
90 lldb::break_id_t break_id, lldb::break_id_t break_loc_id) const {
92 collection::const_iterator pos =
93 GetIDPairConstIterator(break_id, break_loc_id);
94 if (pos != m_break_loc_collection.end())
95 stop_sp = *pos;
96
97 return stop_sp;
98}
99
101 std::lock_guard<std::mutex> guard(m_collection_mutex);
102 BreakpointLocationSP stop_sp;
103 if (i < m_break_loc_collection.size())
104 stop_sp = m_break_loc_collection[i];
105
106 return stop_sp;
107}
108
111 std::lock_guard<std::mutex> guard(m_collection_mutex);
112 BreakpointLocationSP stop_sp;
113 if (i < m_break_loc_collection.size())
114 stop_sp = m_break_loc_collection[i];
115
116 return stop_sp;
117}
118
120 StoppointCallbackContext *context) {
121 bool shouldStop = false;
122 size_t i = 0;
123 size_t prev_size = GetSize();
124 while (i < prev_size) {
125 // ShouldStop can remove the breakpoint from the list, or even delete
126 // it, so we should
127 BreakpointLocationSP cur_loc_sp = GetByIndex(i);
128 BreakpointSP keep_bkpt_alive_sp = cur_loc_sp->GetBreakpoint().shared_from_this();
129 if (cur_loc_sp->ShouldStop(context))
130 shouldStop = true;
131
132 if (prev_size == GetSize())
133 i++;
134 prev_size = GetSize();
135 }
136 return shouldStop;
137}
138
140 std::lock_guard<std::mutex> guard(m_collection_mutex);
141 collection::iterator pos, begin = m_break_loc_collection.begin(),
142 end = m_break_loc_collection.end();
143
144 for (pos = begin; pos != end; ++pos) {
145 if ((*pos)->ValidForThisThread(thread))
146 return true;
147 }
148 return false;
149}
150
152 std::lock_guard<std::mutex> guard(m_collection_mutex);
153 collection::const_iterator pos, begin = m_break_loc_collection.begin(),
154 end = m_break_loc_collection.end();
155
156 bool is_internal = true;
157
158 for (pos = begin; pos != end; ++pos) {
159 if (!(*pos)->GetBreakpoint().IsInternal()) {
160 is_internal = false;
161 break;
162 }
163 }
164 return is_internal;
165}
166
168 Stream *s, lldb::DescriptionLevel level) {
169 std::lock_guard<std::mutex> guard(m_collection_mutex);
170 collection::iterator pos, begin = m_break_loc_collection.begin(),
171 end = m_break_loc_collection.end();
172
173 for (pos = begin; pos != end; ++pos) {
174 if (pos != begin)
175 s->PutChar(' ');
176 (*pos)->GetDescription(s, level);
177 }
178}
179
181 const BreakpointLocationCollection &rhs) {
182 if (this != &rhs) {
184 std::lock_guard<std::mutex> lhs_guard(m_collection_mutex, std::adopt_lock);
185 std::lock_guard<std::mutex> rhs_guard(rhs.m_collection_mutex, std::adopt_lock);
187 }
188 return *this;
189}
BreakpointIDPairMatches(lldb::break_id_t break_id, lldb::break_id_t break_loc_id)
bool operator()(const BreakpointLocationSP &bp_loc) const
lldb::BreakpointLocationSP FindByIDPair(lldb::break_id_t break_id, lldb::break_id_t break_loc_id)
Returns a shared pointer to the breakpoint location with id breakID.
void GetDescription(Stream *s, lldb::DescriptionLevel level)
Print a description of the breakpoint locations in this list to the stream s.
bool IsInternal() const
Tell whether ALL the breakpoints in the location collection are internal.
bool ValidForThisThread(Thread &thread)
Check whether this collection of breakpoint locations have any thread specifiers, and if yes,...
collection::const_iterator GetIDPairConstIterator(lldb::break_id_t break_id, lldb::break_id_t break_loc_id) const
BreakpointLocationCollection & operator=(const BreakpointLocationCollection &rhs)
collection::iterator GetIDPairIterator(lldb::break_id_t break_id, lldb::break_id_t break_loc_id)
bool ShouldStop(StoppointCallbackContext *context)
Enquires of all the breakpoint locations in this list whether we should stop at a hit at breakID.
lldb::BreakpointLocationSP GetByIndex(size_t i)
Returns a shared pointer to the breakpoint location with index i.
void Add(const lldb::BreakpointLocationSP &bp_loc_sp)
Add the breakpoint bp_loc_sp to the list.
bool Remove(lldb::break_id_t break_id, lldb::break_id_t break_loc_id)
Removes the breakpoint location given by breakID from this list.
size_t GetSize() const
Returns the number of elements in this breakpoint location list.
General Outline: When we hit a breakpoint we need to package up whatever information is needed to eva...
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
size_t PutChar(char ch)
Definition: Stream.cpp:104
A class that represents a running process on the host machine.
Definition: SBAttachInfo.h:14
Definition: SBAddress.h:15
std::shared_ptr< lldb_private::BreakpointLocation > BreakpointLocationSP
Definition: lldb-forward.h:306
DescriptionLevel
Description levels for "void GetDescription(Stream *, DescriptionLevel)" calls.
std::shared_ptr< lldb_private::Breakpoint > BreakpointSP
Definition: lldb-forward.h:303
int32_t break_id_t
Definition: lldb-types.h:84