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| //===-- WatchpointList.cpp --------------------------------------*- C++ -*-===//
//
// 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/WatchpointList.h"
#include "lldb/Breakpoint/Watchpoint.h"
using namespace lldb;
using namespace lldb_private;
WatchpointList::WatchpointList()
: m_watchpoints(), m_mutex(), m_next_wp_id(0) {}
WatchpointList::~WatchpointList() {}
// Add a watchpoint to the list.
lldb::watch_id_t WatchpointList::Add(const WatchpointSP &wp_sp, bool notify) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_sp->SetID(++m_next_wp_id);
m_watchpoints.push_back(wp_sp);
if (notify) {
if (wp_sp->GetTarget().EventTypeHasListeners(
Target::eBroadcastBitWatchpointChanged))
wp_sp->GetTarget().BroadcastEvent(Target::eBroadcastBitWatchpointChanged,
new Watchpoint::WatchpointEventData(
eWatchpointEventTypeAdded, wp_sp));
}
return wp_sp->GetID();
}
void WatchpointList::Dump(Stream *s) const {
DumpWithLevel(s, lldb::eDescriptionLevelBrief);
}
void WatchpointList::DumpWithLevel(
Stream *s, lldb::DescriptionLevel description_level) const {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
s->Printf("%p: ", static_cast<const void *>(this));
// s->Indent();
s->Printf("WatchpointList with %" PRIu64 " Watchpoints:\n",
(uint64_t)m_watchpoints.size());
s->IndentMore();
wp_collection::const_iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos)
(*pos)->DumpWithLevel(s, description_level);
s->IndentLess();
}
const WatchpointSP WatchpointList::FindByAddress(lldb::addr_t addr) const {
WatchpointSP wp_sp;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (!m_watchpoints.empty()) {
wp_collection::const_iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos) {
lldb::addr_t wp_addr = (*pos)->GetLoadAddress();
uint32_t wp_bytesize = (*pos)->GetByteSize();
if ((wp_addr <= addr) && ((wp_addr + wp_bytesize) > addr)) {
wp_sp = *pos;
break;
}
}
}
return wp_sp;
}
const WatchpointSP WatchpointList::FindBySpec(std::string spec) const {
WatchpointSP wp_sp;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (!m_watchpoints.empty()) {
wp_collection::const_iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos)
if ((*pos)->GetWatchSpec() == spec) {
wp_sp = *pos;
break;
}
}
return wp_sp;
}
class WatchpointIDMatches {
public:
WatchpointIDMatches(lldb::watch_id_t watch_id) : m_watch_id(watch_id) {}
bool operator()(const WatchpointSP &wp) const {
return m_watch_id == wp->GetID();
}
private:
const lldb::watch_id_t m_watch_id;
};
WatchpointList::wp_collection::iterator
WatchpointList::GetIDIterator(lldb::watch_id_t watch_id) {
return std::find_if(m_watchpoints.begin(),
m_watchpoints.end(), // Search full range
WatchpointIDMatches(watch_id)); // Predicate
}
WatchpointList::wp_collection::const_iterator
WatchpointList::GetIDConstIterator(lldb::watch_id_t watch_id) const {
return std::find_if(m_watchpoints.begin(),
m_watchpoints.end(), // Search full range
WatchpointIDMatches(watch_id)); // Predicate
}
WatchpointSP WatchpointList::FindByID(lldb::watch_id_t watch_id) const {
WatchpointSP wp_sp;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_collection::const_iterator pos = GetIDConstIterator(watch_id);
if (pos != m_watchpoints.end())
wp_sp = *pos;
return wp_sp;
}
lldb::watch_id_t WatchpointList::FindIDByAddress(lldb::addr_t addr) {
WatchpointSP wp_sp = FindByAddress(addr);
if (wp_sp) {
return wp_sp->GetID();
}
return LLDB_INVALID_WATCH_ID;
}
lldb::watch_id_t WatchpointList::FindIDBySpec(std::string spec) {
WatchpointSP wp_sp = FindBySpec(spec);
if (wp_sp) {
return wp_sp->GetID();
}
return LLDB_INVALID_WATCH_ID;
}
WatchpointSP WatchpointList::GetByIndex(uint32_t i) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
WatchpointSP wp_sp;
if (i < m_watchpoints.size()) {
wp_collection::const_iterator pos = m_watchpoints.begin();
std::advance(pos, i);
wp_sp = *pos;
}
return wp_sp;
}
const WatchpointSP WatchpointList::GetByIndex(uint32_t i) const {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
WatchpointSP wp_sp;
if (i < m_watchpoints.size()) {
wp_collection::const_iterator pos = m_watchpoints.begin();
std::advance(pos, i);
wp_sp = *pos;
}
return wp_sp;
}
std::vector<lldb::watch_id_t> WatchpointList::GetWatchpointIDs() const {
std::vector<lldb::watch_id_t> IDs;
wp_collection::const_iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos)
IDs.push_back((*pos)->GetID());
return IDs;
}
bool WatchpointList::Remove(lldb::watch_id_t watch_id, bool notify) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_collection::iterator pos = GetIDIterator(watch_id);
if (pos != m_watchpoints.end()) {
WatchpointSP wp_sp = *pos;
if (notify) {
if (wp_sp->GetTarget().EventTypeHasListeners(
Target::eBroadcastBitWatchpointChanged))
wp_sp->GetTarget().BroadcastEvent(
Target::eBroadcastBitWatchpointChanged,
new Watchpoint::WatchpointEventData(eWatchpointEventTypeRemoved,
wp_sp));
}
m_watchpoints.erase(pos);
return true;
}
return false;
}
uint32_t WatchpointList::GetHitCount() const {
uint32_t hit_count = 0;
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_collection::const_iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos)
hit_count += (*pos)->GetHitCount();
return hit_count;
}
bool WatchpointList::ShouldStop(StoppointCallbackContext *context,
lldb::watch_id_t watch_id) {
WatchpointSP wp_sp = FindByID(watch_id);
if (wp_sp) {
// Let the Watchpoint decide if it should stop here (could not have reached
// it's target hit count yet, or it could have a callback that decided it
// shouldn't stop.
return wp_sp->ShouldStop(context);
}
// We should stop here since this Watchpoint isn't valid anymore or it
// doesn't exist.
return true;
}
void WatchpointList::GetDescription(Stream *s, lldb::DescriptionLevel level) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_collection::iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos) {
s->Printf(" ");
(*pos)->Dump(s);
}
}
void WatchpointList::SetEnabledAll(bool enabled) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
wp_collection::iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos)
(*pos)->SetEnabled(enabled);
}
void WatchpointList::RemoveAll(bool notify) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
if (notify) {
{
wp_collection::iterator pos, end = m_watchpoints.end();
for (pos = m_watchpoints.begin(); pos != end; ++pos) {
if ((*pos)->GetTarget().EventTypeHasListeners(
Target::eBroadcastBitBreakpointChanged)) {
(*pos)->GetTarget().BroadcastEvent(
Target::eBroadcastBitWatchpointChanged,
new Watchpoint::WatchpointEventData(eWatchpointEventTypeRemoved,
*pos));
}
}
}
}
m_watchpoints.clear();
}
void WatchpointList::GetListMutex(
std::unique_lock<std::recursive_mutex> &lock) {
lock = std::unique_lock<std::recursive_mutex>(m_mutex);
}
|