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//===-- BreakpointLocationCollection.cpp ----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Breakpoint/BreakpointLocationCollection.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadSpec.h"
using namespace lldb;
using namespace lldb_private;
// BreakpointLocationCollection constructor
BreakpointLocationCollection::BreakpointLocationCollection() = default;
// Destructor
BreakpointLocationCollection::~BreakpointLocationCollection() = default;
void BreakpointLocationCollection::Add(const BreakpointLocationSP &bp_loc) {
std::lock_guard<std::mutex> guard(m_collection_mutex);
BreakpointLocationSP old_bp_loc =
FindByIDPair(bp_loc->GetBreakpoint().GetID(), bp_loc->GetID());
if (!old_bp_loc.get())
m_break_loc_collection.push_back(bp_loc);
}
bool BreakpointLocationCollection::Remove(lldb::break_id_t bp_id,
lldb::break_id_t bp_loc_id) {
std::lock_guard<std::mutex> guard(m_collection_mutex);
collection::iterator pos = GetIDPairIterator(bp_id, bp_loc_id); // Predicate
if (pos != m_break_loc_collection.end()) {
m_break_loc_collection.erase(pos);
return true;
}
return false;
}
class BreakpointIDPairMatches {
public:
BreakpointIDPairMatches(lldb::break_id_t break_id,
lldb::break_id_t break_loc_id)
: m_break_id(break_id), m_break_loc_id(break_loc_id) {}
bool operator()(const BreakpointLocationSP &bp_loc) const {
return m_break_id == bp_loc->GetBreakpoint().GetID() &&
m_break_loc_id == bp_loc->GetID();
}
private:
const lldb::break_id_t m_break_id;
const lldb::break_id_t m_break_loc_id;
};
BreakpointLocationCollection::collection::iterator
BreakpointLocationCollection::GetIDPairIterator(lldb::break_id_t break_id,
lldb::break_id_t break_loc_id) {
return std::find_if(
m_break_loc_collection.begin(),
m_break_loc_collection.end(), // Search full range
BreakpointIDPairMatches(break_id, break_loc_id)); // Predicate
}
BreakpointLocationCollection::collection::const_iterator
BreakpointLocationCollection::GetIDPairConstIterator(
lldb::break_id_t break_id, lldb::break_id_t break_loc_id) const {
return std::find_if(
m_break_loc_collection.begin(),
m_break_loc_collection.end(), // Search full range
BreakpointIDPairMatches(break_id, break_loc_id)); // Predicate
}
BreakpointLocationSP
BreakpointLocationCollection::FindByIDPair(lldb::break_id_t break_id,
lldb::break_id_t break_loc_id) {
BreakpointLocationSP stop_sp;
collection::iterator pos = GetIDPairIterator(break_id, break_loc_id);
if (pos != m_break_loc_collection.end())
stop_sp = *pos;
return stop_sp;
}
const BreakpointLocationSP BreakpointLocationCollection::FindByIDPair(
lldb::break_id_t break_id, lldb::break_id_t break_loc_id) const {
BreakpointLocationSP stop_sp;
collection::const_iterator pos =
GetIDPairConstIterator(break_id, break_loc_id);
if (pos != m_break_loc_collection.end())
stop_sp = *pos;
return stop_sp;
}
BreakpointLocationSP BreakpointLocationCollection::GetByIndex(size_t i) {
std::lock_guard<std::mutex> guard(m_collection_mutex);
BreakpointLocationSP stop_sp;
if (i < m_break_loc_collection.size())
stop_sp = m_break_loc_collection[i];
return stop_sp;
}
const BreakpointLocationSP
BreakpointLocationCollection::GetByIndex(size_t i) const {
std::lock_guard<std::mutex> guard(m_collection_mutex);
BreakpointLocationSP stop_sp;
if (i < m_break_loc_collection.size())
stop_sp = m_break_loc_collection[i];
return stop_sp;
}
bool BreakpointLocationCollection::ShouldStop(
StoppointCallbackContext *context) {
bool shouldStop = false;
size_t i = 0;
size_t prev_size = GetSize();
while (i < prev_size) {
// ShouldStop can remove the breakpoint from the list, or even delete
// it, so we should
BreakpointLocationSP cur_loc_sp = GetByIndex(i);
BreakpointSP keep_bkpt_alive_sp = cur_loc_sp->GetBreakpoint().shared_from_this();
if (cur_loc_sp->ShouldStop(context))
shouldStop = true;
if (prev_size == GetSize())
i++;
prev_size = GetSize();
}
return shouldStop;
}
bool BreakpointLocationCollection::ValidForThisThread(Thread &thread) {
std::lock_guard<std::mutex> guard(m_collection_mutex);
collection::iterator pos, begin = m_break_loc_collection.begin(),
end = m_break_loc_collection.end();
for (pos = begin; pos != end; ++pos) {
if ((*pos)->ValidForThisThread(thread))
return true;
}
return false;
}
bool BreakpointLocationCollection::IsInternal() const {
std::lock_guard<std::mutex> guard(m_collection_mutex);
collection::const_iterator pos, begin = m_break_loc_collection.begin(),
end = m_break_loc_collection.end();
bool is_internal = true;
for (pos = begin; pos != end; ++pos) {
if (!(*pos)->GetBreakpoint().IsInternal()) {
is_internal = false;
break;
}
}
return is_internal;
}
void BreakpointLocationCollection::GetDescription(
Stream *s, lldb::DescriptionLevel level) {
std::lock_guard<std::mutex> guard(m_collection_mutex);
collection::iterator pos, begin = m_break_loc_collection.begin(),
end = m_break_loc_collection.end();
for (pos = begin; pos != end; ++pos) {
if (pos != begin)
s->PutChar(' ');
(*pos)->GetDescription(s, level);
}
}
BreakpointLocationCollection &BreakpointLocationCollection::operator=(
const BreakpointLocationCollection &rhs) {
if (this != &rhs) {
std::lock(m_collection_mutex, rhs.m_collection_mutex);
std::lock_guard<std::mutex> lhs_guard(m_collection_mutex, std::adopt_lock);
std::lock_guard<std::mutex> rhs_guard(rhs.m_collection_mutex, std::adopt_lock);
m_break_loc_collection = rhs.m_break_loc_collection;
}
return *this;
}
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