Switch std::call_once to llvm::call_once

Summary:
The std::call_once implementation in libstdc++ has problems on few systems: NetBSD, OpenBSD and Linux PPC. LLVM ships with a homegrown implementation llvm::call_once to help on these platforms.

This change is required in the NetBSD LLDB port. std::call_once with libstdc++ results with crashing the debugger.

Sponsored by <The NetBSD Foundation>

Reviewers: labath, joerg, emaste, mehdi_amini, clayborg

Reviewed By: labath, clayborg

Subscribers: #lldb

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D29288

llvm-svn: 294202

4 files changed, 19 insertions, 14 deletions

diff --git a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
index 7aea29d361a..e862313ae9e 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
@@ -21,6 +21,7 @@
 
 // Other libraries and framework includes
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Threading.h"
 
 // Project includes
 #include "lldb/Core/FastDemangle.h"
@@ -1036,10 +1037,10 @@ std::unique_ptr<Language::TypeScavenger> CPlusPlusLanguage::GetTypeScavenger() {
 }
 
 lldb::TypeCategoryImplSP CPlusPlusLanguage::GetFormatters() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static TypeCategoryImplSP g_category;
 
-  std::call_once(g_initialize, [this]() -> void {
+  llvm::call_once(g_initialize, [this]() -> void {
     DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
     if (g_category) {
       LoadLibCxxFormatters(g_category);
@@ -1052,11 +1053,11 @@ lldb::TypeCategoryImplSP CPlusPlusLanguage::GetFormatters() {
 
 HardcodedFormatters::HardcodedSummaryFinder
 CPlusPlusLanguage::GetHardcodedSummaries() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static ConstString g_vectortypes("VectorTypes");
   static HardcodedFormatters::HardcodedSummaryFinder g_formatters;
 
-  std::call_once(g_initialize, []() -> void {
+  llvm::call_once(g_initialize, []() -> void {
     g_formatters.push_back(
         [](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
            FormatManager &) -> TypeSummaryImpl::SharedPointer {
@@ -1116,11 +1117,11 @@ CPlusPlusLanguage::GetHardcodedSummaries() {
 
 HardcodedFormatters::HardcodedSyntheticFinder
 CPlusPlusLanguage::GetHardcodedSynthetics() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static ConstString g_vectortypes("VectorTypes");
   static HardcodedFormatters::HardcodedSyntheticFinder g_formatters;
 
-  std::call_once(g_initialize, []() -> void {
+  llvm::call_once(g_initialize, []() -> void {
     g_formatters.push_back([](lldb_private::ValueObject &valobj,
                               lldb::DynamicValueType,
                               FormatManager &
diff --git a/lldb/source/Plugins/Language/Go/GoLanguage.cpp b/lldb/source/Plugins/Language/Go/GoLanguage.cpp
index a1f97c21c94..66b4530abc7 100644
--- a/lldb/source/Plugins/Language/Go/GoLanguage.cpp
+++ b/lldb/source/Plugins/Language/Go/GoLanguage.cpp
@@ -15,6 +15,7 @@
 
 // Other libraries and framework includes
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Threading.h"
 
 // Project includes
 #include "GoLanguage.h"
@@ -62,10 +63,10 @@ Language *GoLanguage::CreateInstance(lldb::LanguageType language) {
 
 HardcodedFormatters::HardcodedSummaryFinder
 GoLanguage::GetHardcodedSummaries() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static HardcodedFormatters::HardcodedSummaryFinder g_formatters;
 
-  std::call_once(g_initialize, []() -> void {
+  llvm::call_once(g_initialize, []() -> void {
     g_formatters.push_back(
         [](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
            FormatManager &) -> TypeSummaryImpl::SharedPointer {
@@ -104,10 +105,10 @@ GoLanguage::GetHardcodedSummaries() {
 
 HardcodedFormatters::HardcodedSyntheticFinder
 GoLanguage::GetHardcodedSynthetics() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static HardcodedFormatters::HardcodedSyntheticFinder g_formatters;
 
-  std::call_once(g_initialize, []() -> void {
+  llvm::call_once(g_initialize, []() -> void {
     g_formatters.push_back(
         [](lldb_private::ValueObject &valobj, lldb::DynamicValueType,
            FormatManager &fmt_mgr) -> SyntheticChildren::SharedPointer {
diff --git a/lldb/source/Plugins/Language/Java/JavaLanguage.cpp b/lldb/source/Plugins/Language/Java/JavaLanguage.cpp
index 4a825c41efa..b17862f0b6a 100644
--- a/lldb/source/Plugins/Language/Java/JavaLanguage.cpp
+++ b/lldb/source/Plugins/Language/Java/JavaLanguage.cpp
@@ -15,6 +15,7 @@
 
 // Other libraries and framework includes
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Threading.h"
 
 // Project includes
 #include "JavaFormatterFunctions.h"
@@ -64,10 +65,10 @@ bool JavaLanguage::IsNilReference(ValueObject &valobj) {
 }
 
 lldb::TypeCategoryImplSP JavaLanguage::GetFormatters() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static TypeCategoryImplSP g_category;
 
-  std::call_once(g_initialize, [this]() -> void {
+  llvm::call_once(g_initialize, [this]() -> void {
     DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
     if (g_category) {
       llvm::StringRef array_regexp("^.*\\[\\]&?$");
diff --git a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
index b02d90a0f38..193c5864d01 100644
--- a/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
+++ b/lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp
@@ -26,6 +26,8 @@
 #include "lldb/Utility/ConstString.h"
 #include "lldb/Utility/StreamString.h"
 
+#include "llvm/Support/Threading.h"
+
 #include "CF.h"
 #include "Cocoa.h"
 #include "CoreMedia.h"
@@ -857,10 +859,10 @@ static void LoadCoreMediaFormatters(TypeCategoryImplSP objc_category_sp) {
 }
 
 lldb::TypeCategoryImplSP ObjCLanguage::GetFormatters() {
-  static std::once_flag g_initialize;
+  static llvm::once_flag g_initialize;
   static TypeCategoryImplSP g_category;
 
-  std::call_once(g_initialize, [this]() -> void {
+  llvm::call_once(g_initialize, [this]() -> void {
     DataVisualization::Categories::GetCategory(GetPluginName(), g_category);
     if (g_category) {
       LoadCoreMediaFormatters(g_category);