[Lldb-commits] [PATCH] D124029: Add a mutex to the ThreadPlanStackMap to prevent it getting corrupted
Jim Ingham via Phabricator via lldb-commits
lldb-commits at lists.llvm.org
Fri Apr 29 11:08:45 PDT 2022
This revision was automatically updated to reflect the committed changes.
Closed by commit rGdca2bc408186: Add a mutex to the ThreadPlanStackMap class. (authored by jingham).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D124029/new/
https://reviews.llvm.org/D124029
Files:
lldb/include/lldb/Target/ThreadPlanStack.h
lldb/source/Target/ThreadPlanStack.cpp
Index: lldb/source/Target/ThreadPlanStack.cpp
===================================================================
--- lldb/source/Target/ThreadPlanStack.cpp
+++ lldb/source/Target/ThreadPlanStack.cpp
@@ -400,6 +400,7 @@
bool delete_missing,
bool check_for_new) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
// Now find all the new threads and add them to the map:
if (check_for_new) {
for (auto thread : current_threads.Threads()) {
@@ -434,6 +435,7 @@
lldb::DescriptionLevel desc_level,
bool internal, bool condense_if_trivial,
bool skip_unreported) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
for (auto &elem : m_plans_list) {
lldb::tid_t tid = elem.first;
uint32_t index_id = 0;
@@ -470,6 +472,7 @@
bool internal,
bool condense_if_trivial,
bool skip_unreported) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
uint32_t index_id = 0;
ThreadSP thread_sp = m_process.GetThreadList().FindThreadByID(tid);
@@ -509,6 +512,7 @@
bool ThreadPlanStackMap::PrunePlansForTID(lldb::tid_t tid) {
// We only remove the plans for unreported TID's.
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
ThreadSP thread_sp = m_process.GetThreadList().FindThreadByID(tid);
if (thread_sp)
return false;
Index: lldb/include/lldb/Target/ThreadPlanStack.h
===================================================================
--- lldb/include/lldb/Target/ThreadPlanStack.h
+++ lldb/include/lldb/Target/ThreadPlanStack.h
@@ -123,11 +123,13 @@
bool check_for_new = true);
void AddThread(Thread &thread) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
lldb::tid_t tid = thread.GetID();
m_plans_list.emplace(tid, thread);
}
bool RemoveTID(lldb::tid_t tid) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
auto result = m_plans_list.find(tid);
if (result == m_plans_list.end())
return false;
@@ -137,6 +139,7 @@
}
ThreadPlanStack *Find(lldb::tid_t tid) {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
auto result = m_plans_list.find(tid);
if (result == m_plans_list.end())
return nullptr;
@@ -154,6 +157,7 @@
}
void Clear() {
+ std::lock_guard<std::recursive_mutex> guard(m_stack_map_mutex);
for (auto &plan : m_plans_list)
plan.second.ThreadDestroyed(nullptr);
m_plans_list.clear();
@@ -172,8 +176,10 @@
private:
Process &m_process;
+ mutable std::recursive_mutex m_stack_map_mutex;
using PlansList = std::unordered_map<lldb::tid_t, ThreadPlanStack>;
PlansList m_plans_list;
+
};
} // namespace lldb_private
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