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Make LLDB safer to use with respect to the global destructor chain. 

llvm-svn: 262090
This commit is contained in:
Greg Clayton 2016-02-26 23:20:08 +00:00
parent 0c95decaaa
commit cc2e27f098
3 changed files with 15 additions and 12 deletions
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9
lldb/source/Target/Process.cpp
View File

@ -833,13 +833,14 @@ Process::~Process()
const ProcessPropertiesSP &
Process::GetGlobalProperties()
{
static ProcessPropertiesSP g_settings_sp;
// NOTE: intentional leak so we don't crash if global destructor chain gets
// called as other threads still use the result of this function
static ProcessPropertiesSP *g_settings_sp_ptr = nullptr;
static std::once_flag g_once_flag;
std::call_once(g_once_flag, []() {
if (!g_settings_sp)
g_settings_sp.reset (new ProcessProperties (NULL));
g_settings_sp_ptr = new ProcessPropertiesSP(new ProcessProperties (NULL));
});
return g_settings_sp;
return *g_settings_sp_ptr;
}
void

9
lldb/source/Target/Target.cpp
View File

@ -2778,13 +2778,14 @@ Target::RunStopHooks ()
const TargetPropertiesSP &
Target::GetGlobalProperties()
{
static TargetPropertiesSP g_settings_sp;
// NOTE: intentional leak so we don't crash if global destructor chain gets
// called as other threads still use the result of this function
static TargetPropertiesSP *g_settings_sp_ptr = nullptr;
static std::once_flag g_once_flag;
std::call_once(g_once_flag, []() {
if (!g_settings_sp)
g_settings_sp.reset(new TargetProperties(nullptr));
g_settings_sp_ptr = new TargetPropertiesSP(new TargetProperties(nullptr));
});
return g_settings_sp;
return *g_settings_sp_ptr;
}
Error

9
lldb/source/Target/Thread.cpp
View File

@ -59,13 +59,14 @@ using namespace lldb_private;
const ThreadPropertiesSP &
Thread::GetGlobalProperties()
{
static ThreadPropertiesSP g_settings_sp;
// NOTE: intentional leak so we don't crash if global destructor chain gets
// called as other threads still use the result of this function
static ThreadPropertiesSP *g_settings_sp_ptr = nullptr;
static std::once_flag g_once_flag;
std::call_once(g_once_flag, []() {
if (!g_settings_sp)
g_settings_sp.reset (new ThreadProperties (true));
g_settings_sp_ptr = new ThreadPropertiesSP(new ThreadProperties (true));
});
return g_settings_sp;
return *g_settings_sp_ptr;
}
static PropertyDefinition