[lldb][AIX] 1. Avoid namespace collision on other platforms (llvm#104679)

This PR is in reference to porting LLDB on AIX.

Link to discussions on llvm discourse and github:
1.  https://discourse.llvm.org/t/port-lldb-to-ibm-aix/80640
2.  llvm#101657

The complete changes for porting are present in this draft PR:
llvm#102601

The changes on this PR are intended to avoid namespace collision for
certain typedefs between lldb and other platforms:
1. tid_t --> lldb::tid_t
2. offset_t --> lldb::offset_t

(cherry picked from commit b804516)

Author: DhruvSrivastavaX

lldb/source/API/SBBreakpoint.cpp

@@ -342,7 +342,7 @@ uint32_t SBBreakpoint::GetIgnoreCount() const {
   return count;
 }
 
-void SBBreakpoint::SetThreadID(tid_t tid) {
+void SBBreakpoint::SetThreadID(lldb::tid_t tid) {
   LLDB_INSTRUMENT_VA(this, tid);
 
   BreakpointSP bkpt_sp = GetSP();
@@ -353,10 +353,10 @@ void SBBreakpoint::SetThreadID(tid_t tid) {
   }
 }
 
-tid_t SBBreakpoint::GetThreadID() {
+lldb::tid_t SBBreakpoint::GetThreadID() {
   LLDB_INSTRUMENT_VA(this);
 
-  tid_t tid = LLDB_INVALID_THREAD_ID;
+  lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
   BreakpointSP bkpt_sp = GetSP();
   if (bkpt_sp) {
     std::lock_guard<std::recursive_mutex> guard(

lldb/source/API/SBBreakpointLocation.cpp

@@ -302,7 +302,7 @@ bool SBBreakpointLocation::GetCommandLineCommands(SBStringList &commands) {
   return has_commands;
 }
 
-void SBBreakpointLocation::SetThreadID(tid_t thread_id) {
+void SBBreakpointLocation::SetThreadID(lldb::tid_t thread_id) {
   LLDB_INSTRUMENT_VA(this, thread_id);
 
   BreakpointLocationSP loc_sp = GetSP();
@@ -313,10 +313,10 @@ void SBBreakpointLocation::SetThreadID(tid_t thread_id) {
   }
 }
 
-tid_t SBBreakpointLocation::GetThreadID() {
+lldb::tid_t SBBreakpointLocation::GetThreadID() {
   LLDB_INSTRUMENT_VA(this);
 
-  tid_t tid = LLDB_INVALID_THREAD_ID;
+  lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
   BreakpointLocationSP loc_sp = GetSP();
   if (loc_sp) {
     std::lock_guard<std::recursive_mutex> guard(

lldb/source/API/SBBreakpointName.cpp

@@ -347,7 +347,7 @@ bool SBBreakpointName::GetAutoContinue() {
   return bp_name->GetOptions().IsAutoContinue();
 }
 
-void SBBreakpointName::SetThreadID(tid_t tid) {
+void SBBreakpointName::SetThreadID(lldb::tid_t tid) {
   LLDB_INSTRUMENT_VA(this, tid);
 
   BreakpointName *bp_name = GetBreakpointName();
@@ -361,7 +361,7 @@ void SBBreakpointName::SetThreadID(tid_t tid) {
   UpdateName(*bp_name);
 }
 
-tid_t SBBreakpointName::GetThreadID() {
+lldb::tid_t SBBreakpointName::GetThreadID() {
   LLDB_INSTRUMENT_VA(this);
 
   BreakpointName *bp_name = GetBreakpointName();

lldb/source/Expression/DWARFExpression.cpp

@@ -134,9 +134,10 @@ static llvm::Error ReadRegisterValueAsScalar(RegisterContext *reg_ctx,
 
 /// Return the length in bytes of the set of operands for \p op. No guarantees
 /// are made on the state of \p data after this call.
-static offset_t GetOpcodeDataSize(const DataExtractor &data,
-                                  const lldb::offset_t data_offset,
-                                  const uint8_t op, const DWARFUnit *dwarf_cu) {
+static lldb::offset_t GetOpcodeDataSize(const DataExtractor &data,
+                                        const lldb::offset_t data_offset,
+                                        const uint8_t op,
+                                        const DWARFUnit *dwarf_cu) {
   lldb::offset_t offset = data_offset;
   switch (op) {
   case DW_OP_addr:
@@ -362,7 +363,7 @@ lldb::addr_t DWARFExpression::GetLocation_DW_OP_addr(const DWARFUnit *dwarf_cu,
       error = true;
       break;
     }
-    const offset_t op_arg_size =
+    const lldb::offset_t op_arg_size =
         GetOpcodeDataSize(m_data, offset, op, dwarf_cu);
     if (op_arg_size == LLDB_INVALID_OFFSET) {
       error = true;
@@ -422,7 +423,7 @@ bool DWARFExpression::Update_DW_OP_addr(const DWARFUnit *dwarf_cu,
       m_data.SetData(encoder.GetDataBuffer());
       return true;
     }
-    const offset_t op_arg_size =
+    const lldb::offset_t op_arg_size =
         GetOpcodeDataSize(m_data, offset, op, dwarf_cu);
     if (op_arg_size == LLDB_INVALID_OFFSET)
       break;
@@ -439,7 +440,7 @@ bool DWARFExpression::ContainsThreadLocalStorage(
 
     if (op == DW_OP_form_tls_address || op == DW_OP_GNU_push_tls_address)
       return true;
-    const offset_t op_arg_size =
+    const lldb::offset_t op_arg_size =
         GetOpcodeDataSize(m_data, offset, op, dwarf_cu);
     if (op_arg_size == LLDB_INVALID_OFFSET)
       return false;
@@ -519,7 +520,7 @@ bool DWARFExpression::LinkThreadLocalStorage(
     }
 
     if (!decoded_data) {
-      const offset_t op_arg_size =
+      const lldb::offset_t op_arg_size =
           GetOpcodeDataSize(m_data, offset, op, dwarf_cu);
       if (op_arg_size == LLDB_INVALID_OFFSET)
         return false;

lldb/source/Plugins/ABI/PowerPC/ABISysV_ppc64.cpp

@@ -641,7 +641,7 @@ class ReturnValueExtractor {
 
     DataExtractor de(&raw_data, sizeof(raw_data), m_byte_order, m_addr_size);
 
-    offset_t offset = 0;
+    lldb::offset_t offset = 0;
     std::optional<uint64_t> byte_size = type.GetByteSize(m_process_sp.get());
     if (!byte_size)
       return {};

lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp

@@ -256,7 +256,7 @@ DynamicLoaderDarwinKernel::SearchForKernelWithDebugHints(Process *process) {
       if (process->ReadMemoryFromInferior (kernel_addresses_64[i], uval, 8, read_err) == 8)
       {
           DataExtractor data (&uval, 8, process->GetByteOrder(), process->GetAddressByteSize());
-          offset_t offset = 0;
+          lldb::offset_t offset = 0;
           uint64_t addr = data.GetU64 (&offset);
           if (CheckForKernelImageAtAddress(addr, process).IsValid()) {
               return addr;
@@ -270,7 +270,7 @@ DynamicLoaderDarwinKernel::SearchForKernelWithDebugHints(Process *process) {
       if (process->ReadMemoryFromInferior (kernel_addresses_32[i], uval, 4, read_err) == 4)
       {
           DataExtractor data (&uval, 4, process->GetByteOrder(), process->GetAddressByteSize());
-          offset_t offset = 0;
+          lldb::offset_t offset = 0;
           uint32_t addr = data.GetU32 (&offset);
           if (CheckForKernelImageAtAddress(addr, process).IsValid()) {
               return addr;

lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp

@@ -1153,7 +1153,7 @@ DynamicLoaderDarwin::GetThreadLocalData(const lldb::ModuleSP module_sp,
     // TLS data for the pthread_key on a specific thread yet. If we have we
     // can re-use it since its location will not change unless the process
     // execs.
-    const tid_t tid = thread_sp->GetID();
+    const lldb::tid_t tid = thread_sp->GetID();
     auto tid_pos = m_tid_to_tls_map.find(tid);
     if (tid_pos != m_tid_to_tls_map.end()) {
       auto tls_pos = tid_pos->second.find(key);

lldb/source/Plugins/InstrumentationRuntime/MainThreadChecker/InstrumentationRuntimeMainThreadChecker.cpp

@@ -365,7 +365,8 @@ InstrumentationRuntimeMainThreadChecker::GetBacktracesFromExtendedStopInfo(
 
   StructuredData::ObjectSP thread_id_obj =
       info->GetObjectForDotSeparatedPath("tid");
-  tid_t tid = thread_id_obj ? thread_id_obj->GetUnsignedIntegerValue() : 0;
+  lldb::tid_t tid =
+      thread_id_obj ? thread_id_obj->GetUnsignedIntegerValue() : 0;
 
   // We gather symbolication addresses above, so no need for HistoryThread to
   // try to infer the call addresses.

lldb/source/Plugins/InstrumentationRuntime/TSan/InstrumentationRuntimeTSan.cpp

@@ -794,15 +794,15 @@ std::string InstrumentationRuntimeTSan::GetLocationDescription(
             Sprintf("Location is a %ld-byte heap object at 0x%llx", size, addr);
       }
     } else if (type == "stack") {
-      tid_t tid = loc->GetAsDictionary()
-                      ->GetValueForKey("thread_id")
-                      ->GetUnsignedIntegerValue();
+      lldb::tid_t tid = loc->GetAsDictionary()
+                            ->GetValueForKey("thread_id")
+                            ->GetUnsignedIntegerValue();
 
       result = Sprintf("Location is stack of thread %d", tid);
     } else if (type == "tls") {
-      tid_t tid = loc->GetAsDictionary()
-                      ->GetValueForKey("thread_id")
-                      ->GetUnsignedIntegerValue();
+      lldb::tid_t tid = loc->GetAsDictionary()
+                            ->GetValueForKey("thread_id")
+                            ->GetUnsignedIntegerValue();
 
       result = Sprintf("Location is TLS of thread %d", tid);
     } else if (type == "fd") {
@@ -976,7 +976,7 @@ static std::string GenerateThreadName(const std::string &path,
   if (path == "mops") {
     size_t size =
         o->GetObjectForDotSeparatedPath("size")->GetUnsignedIntegerValue();
-    tid_t thread_id =
+    lldb::tid_t thread_id =
         o->GetObjectForDotSeparatedPath("thread_id")->GetUnsignedIntegerValue();
     bool is_write =
         o->GetObjectForDotSeparatedPath("is_write")->GetBooleanValue();
@@ -1007,15 +1007,15 @@ static std::string GenerateThreadName(const std::string &path,
   }
 
   if (path == "threads") {
-    tid_t thread_id =
+    lldb::tid_t thread_id =
         o->GetObjectForDotSeparatedPath("thread_id")->GetUnsignedIntegerValue();
     result = Sprintf("Thread %zu created", thread_id);
   }
 
   if (path == "locs") {
     std::string type = std::string(
         o->GetAsDictionary()->GetValueForKey("type")->GetStringValue());
-    tid_t thread_id =
+    lldb::tid_t thread_id =
         o->GetObjectForDotSeparatedPath("thread_id")->GetUnsignedIntegerValue();
     int fd = o->GetObjectForDotSeparatedPath("file_descriptor")
                  ->GetSignedIntegerValue();
@@ -1035,7 +1035,7 @@ static std::string GenerateThreadName(const std::string &path,
   }
 
   if (path == "stacks") {
-    tid_t thread_id =
+    lldb::tid_t thread_id =
         o->GetObjectForDotSeparatedPath("thread_id")->GetUnsignedIntegerValue();
     result = Sprintf("Thread %" PRIu64, thread_id);
   }
@@ -1062,7 +1062,7 @@ static void AddThreadsForPath(const std::string &path,
 
         StructuredData::ObjectSP thread_id_obj =
             o->GetObjectForDotSeparatedPath("thread_os_id");
-        tid_t tid =
+        lldb::tid_t tid =
             thread_id_obj ? thread_id_obj->GetUnsignedIntegerValue() : 0;
 
         ThreadSP new_thread_sp =

lldb/source/Plugins/InstrumentationRuntime/UBSan/InstrumentationRuntimeUBSan.cpp

@@ -321,7 +321,8 @@ InstrumentationRuntimeUBSan::GetBacktracesFromExtendedStopInfo(
 
   StructuredData::ObjectSP thread_id_obj =
       info->GetObjectForDotSeparatedPath("tid");
-  tid_t tid = thread_id_obj ? thread_id_obj->GetUnsignedIntegerValue() : 0;
+  lldb::tid_t tid =
+      thread_id_obj ? thread_id_obj->GetUnsignedIntegerValue() : 0;
 
   // We gather symbolication addresses above, so no need for HistoryThread to
   // try to infer the call addresses.

lldb/source/Plugins/MemoryHistory/asan/MemoryHistoryASan.cpp

@@ -107,7 +107,7 @@ static void CreateHistoryThreadFromValueObject(ProcessSP process_sp,
     return;
 
   int count = count_sp->GetValueAsUnsigned(0);
-  tid_t tid = tid_sp->GetValueAsUnsigned(0) + 1;
+  lldb::tid_t tid = tid_sp->GetValueAsUnsigned(0) + 1;
 
   if (count <= 0)
     return;

lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp

@@ -5701,7 +5701,8 @@ bool ObjectFileMachO::GetCorefileMainBinaryInfo(addr_t &value,
   return false;
 }
 
-bool ObjectFileMachO::GetCorefileThreadExtraInfos(std::vector<tid_t> &tids) {
+bool ObjectFileMachO::GetCorefileThreadExtraInfos(
+    std::vector<lldb::tid_t> &tids) {
   tids.clear();
   ModuleSP module_sp(GetModule());
   if (module_sp) {
@@ -5752,8 +5753,8 @@ bool ObjectFileMachO::GetCorefileThreadExtraInfos(std::vector<tid_t> &tids) {
           return false;
         }
         StructuredData::Dictionary *thread = *maybe_thread;
-        tid_t tid = LLDB_INVALID_THREAD_ID;
-        if (thread->GetValueForKeyAsInteger<tid_t>("thread_id", tid))
+        lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
+        if (thread->GetValueForKeyAsInteger<lldb::tid_t>("thread_id", tid))
           if (tid == 0)
             tid = LLDB_INVALID_THREAD_ID;
         tids.push_back(tid);

lldb/source/Plugins/OperatingSystem/Python/OperatingSystemPython.cpp

@@ -227,7 +227,7 @@ ThreadSP OperatingSystemPython::CreateThreadFromThreadInfo(
     ThreadList &old_thread_list, std::vector<bool> &core_used_map,
     bool *did_create_ptr) {
   ThreadSP thread_sp;
-  tid_t tid = LLDB_INVALID_THREAD_ID;
+  lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
   if (!thread_dict.GetValueForKeyAsInteger("tid", tid))
     return ThreadSP();
 

lldb/source/Plugins/Process/Utility/ThreadMemory.cpp

@@ -20,7 +20,7 @@
 using namespace lldb;
 using namespace lldb_private;
 
-ThreadMemory::ThreadMemory(Process &process, tid_t tid,
+ThreadMemory::ThreadMemory(Process &process, lldb::tid_t tid,
                            const ValueObjectSP &thread_info_valobj_sp)
     : Thread(process, tid), m_backing_thread_sp(),
       m_thread_info_valobj_sp(thread_info_valobj_sp), m_name(), m_queue(),

lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp

@@ -1513,7 +1513,7 @@ bool ProcessGDBRemote::DoUpdateThreadList(ThreadList &old_thread_list,
   ThreadList old_thread_list_copy(old_thread_list);
   if (num_thread_ids > 0) {
     for (size_t i = 0; i < num_thread_ids; ++i) {
-      tid_t tid = m_thread_ids[i];
+      lldb::tid_t tid = m_thread_ids[i];
       ThreadSP thread_sp(
           old_thread_list_copy.RemoveThreadByProtocolID(tid, false));
       if (!thread_sp) {

lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp

@@ -598,19 +598,19 @@ bool ProcessMachCore::DoUpdateThreadList(ThreadList &old_thread_list,
     ObjectFile *core_objfile = m_core_module_sp->GetObjectFile();
 
     if (core_objfile) {
-      std::set<tid_t> used_tids;
+      std::set<lldb::tid_t> used_tids;
       const uint32_t num_threads = core_objfile->GetNumThreadContexts();
-      std::vector<tid_t> tids;
+      std::vector<lldb::tid_t> tids;
       if (core_objfile->GetCorefileThreadExtraInfos(tids)) {
         assert(tids.size() == num_threads);
 
         // Find highest tid value.
-        tid_t highest_tid = 0;
+        lldb::tid_t highest_tid = 0;
         for (uint32_t i = 0; i < num_threads; i++) {
           if (tids[i] != LLDB_INVALID_THREAD_ID && tids[i] > highest_tid)
             highest_tid = tids[i];
         }
-        tid_t current_unused_tid = highest_tid + 1;
+        lldb::tid_t current_unused_tid = highest_tid + 1;
         for (uint32_t i = 0; i < num_threads; i++) {
           if (tids[i] == LLDB_INVALID_THREAD_ID) {
             tids[i] = current_unused_tid++;

lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp

@@ -1023,7 +1023,7 @@ uint32_t DWARFUnit::GetHeaderByteSize() const {
 
 std::optional<uint64_t>
 DWARFUnit::GetStringOffsetSectionItem(uint32_t index) const {
-  offset_t offset = GetStrOffsetsBase() + index * 4;
+  lldb::offset_t offset = GetStrOffsetsBase() + index * 4;
   return m_dwarf.GetDWARFContext().getOrLoadStrOffsetsData().GetU32(&offset);
 }
 

lldb/source/Plugins/SystemRuntime/MacOSX/AppleGetThreadItemInfoHandler.cpp

@@ -216,7 +216,7 @@ lldb::addr_t AppleGetThreadItemInfoHandler::SetupGetThreadItemInfoFunction(
 
 AppleGetThreadItemInfoHandler::GetThreadItemInfoReturnInfo
 AppleGetThreadItemInfoHandler::GetThreadItemInfo(Thread &thread,
-                                                 tid_t thread_id,
+                                                 lldb::tid_t thread_id,
                                                  addr_t page_to_free,
                                                  uint64_t page_to_free_size,
                                                  Status &error) {

lldb/source/Symbol/DWARFCallFrameInfo.cpp

@@ -33,7 +33,7 @@ using namespace lldb_private::dwarf;
 // Used for calls when the value type is specified by a DWARF EH Frame pointer
 // encoding.
 static uint64_t
-GetGNUEHPointer(const DataExtractor &DE, offset_t *offset_ptr,
+GetGNUEHPointer(const DataExtractor &DE, lldb::offset_t *offset_ptr,
                 uint32_t eh_ptr_enc, addr_t pc_rel_addr, addr_t text_addr,
                 addr_t data_addr) //, BSDRelocs *data_relocs) const
 {
@@ -588,7 +588,7 @@ bool DWARFCallFrameInfo::FDEToUnwindPlan(dw_offset_t dwarf_offset,
   if (cie->augmentation[0] == 'z') {
     uint32_t aug_data_len = (uint32_t)m_cfi_data.GetULEB128(&offset);
     if (aug_data_len != 0 && cie->lsda_addr_encoding != DW_EH_PE_omit) {
-      offset_t saved_offset = offset;
+      lldb::offset_t saved_offset = offset;
       lsda_data_file_address =
           GetGNUEHPointer(m_cfi_data, &offset, cie->lsda_addr_encoding,
                           pc_rel_addr, text_addr, data_addr);