Merge topic 'modernize-memory-management'

dc2daa6860 cmFileMonitor: modernize memory management
23130c539f cmInstalledFile: modernize memory management
3c632b89ab cmOrderDirectories: Modernize memory management

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4149

6 files changed, 39 insertions, 49 deletions

diff --git a/Source/cmFileMonitor.cxx b/Source/cmFileMonitor.cxx
index ac8a37e..8cfdb2d 100644
--- a/Source/cmFileMonitor.cxx
+++ b/Source/cmFileMonitor.cxx
@@ -7,9 +7,9 @@
 #include <unordered_map>
 #include <utility>
 
-#include "cmsys/SystemTools.hxx"
+#include <cm/memory>
 
-#include "cmAlgorithms.h"
+#include "cmsys/SystemTools.hxx"
 
 namespace {
 void on_directory_change(uv_fs_event_t* handle, const char* filename,
@@ -37,12 +37,12 @@ public:
 class cmVirtualDirectoryWatcher : public cmIBaseWatcher
 {
 public:
-  ~cmVirtualDirectoryWatcher() override { cmDeleteAll(this->Children); }
+  ~cmVirtualDirectoryWatcher() override = default;
 
   cmIBaseWatcher* Find(const std::string& ps)
   {
     const auto i = this->Children.find(ps);
-    return (i == this->Children.end()) ? nullptr : i->second;
+    return (i == this->Children.end()) ? nullptr : i->second.get();
   }
 
   void Trigger(const std::string& pathSegment, int events,
@@ -96,11 +96,7 @@ public:
     return result;
   }
 
-  void Reset()
-  {
-    cmDeleteAll(this->Children);
-    this->Children.clear();
-  }
+  void Reset() { this->Children.clear(); }
 
   void AddChildWatcher(const std::string& ps, cmIBaseWatcher* watcher)
   {
@@ -108,11 +104,12 @@ public:
     assert(this->Children.find(ps) == this->Children.end());
     assert(watcher);
 
-    this->Children.emplace(std::make_pair(ps, watcher));
+    this->Children.emplace(ps, std::unique_ptr<cmIBaseWatcher>(watcher));
   }
 
 private:
-  std::unordered_map<std::string, cmIBaseWatcher*> Children; // owned!
+  std::unordered_map<std::string, std::unique_ptr<cmIBaseWatcher>>
+    Children; // owned!
 };
 
 // Root of all the different (on windows!) root directories:
@@ -295,14 +292,11 @@ void on_fs_close(uv_handle_t* handle)
 } // namespace
 
 cmFileMonitor::cmFileMonitor(uv_loop_t* l)
-  : Root(new cmRootWatcher(l))
+  : Root(cm::make_unique<cmRootWatcher>(l))
 {
 }
 
-cmFileMonitor::~cmFileMonitor()
-{
-  delete this->Root;
-}
+cmFileMonitor::~cmFileMonitor() = default;
 
 void cmFileMonitor::MonitorPaths(const std::vector<std::string>& paths,
                                  Callback const& cb)
@@ -316,7 +310,7 @@ void cmFileMonitor::MonitorPaths(const std::vector<std::string>& paths,
     if (segmentCount < 2) { // Expect at least rootdir and filename
       continue;
     }
-    cmVirtualDirectoryWatcher* currentWatcher = this->Root;
+    cmVirtualDirectoryWatcher* currentWatcher = this->Root.get();
     for (size_t i = 0; i < segmentCount; ++i) {
       assert(currentWatcher);
 
@@ -334,11 +328,12 @@ void cmFileMonitor::MonitorPaths(const std::vector<std::string>& paths,
       cmIBaseWatcher* nextWatcher = currentWatcher->Find(currentSegment);
       if (!nextWatcher) {
         if (rootSegment) { // Root part
-          assert(currentWatcher == this->Root);
-          nextWatcher = new cmRootDirectoryWatcher(this->Root, currentSegment);
+          assert(currentWatcher == this->Root.get());
+          nextWatcher =
+            new cmRootDirectoryWatcher(this->Root.get(), currentSegment);
           assert(currentWatcher->Find(currentSegment) == nextWatcher);
         } else if (fileSegment) { // File part
-          assert(currentWatcher != this->Root);
+          assert(currentWatcher != this->Root.get());
           nextWatcher = new cmFileWatcher(
             dynamic_cast<cmRealDirectoryWatcher*>(currentWatcher),
             currentSegment, cb);
diff --git a/Source/cmFileMonitor.h b/Source/cmFileMonitor.h
index 7ffc929..b510a2c 100644
--- a/Source/cmFileMonitor.h
+++ b/Source/cmFileMonitor.h
@@ -5,6 +5,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <functional>
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -30,5 +31,5 @@ public:
   std::vector<std::string> WatchedDirectories() const;
 
 private:
-  cmRootWatcher* Root;
+  std::unique_ptr<cmRootWatcher> Root;
 };
diff --git a/Source/cmInstalledFile.cxx b/Source/cmInstalledFile.cxx
index eabe590..a65ae03 100644
--- a/Source/cmInstalledFile.cxx
+++ b/Source/cmInstalledFile.cxx
@@ -4,7 +4,6 @@
 
 #include <utility>
 
-#include "cmAlgorithms.h"
 #include "cmGeneratorExpression.h"
 #include "cmListFileCache.h"
 #include "cmMakefile.h"
@@ -12,17 +11,11 @@
 
 cmInstalledFile::cmInstalledFile() = default;
 
-cmInstalledFile::~cmInstalledFile()
-{
-  delete NameExpression;
-}
+cmInstalledFile::~cmInstalledFile() = default;
 
 cmInstalledFile::Property::Property() = default;
 
-cmInstalledFile::Property::~Property()
-{
-  cmDeleteAll(this->ValueExpressions);
-}
+cmInstalledFile::Property::~Property() = default;
 
 void cmInstalledFile::SetName(cmMakefile* mf, const std::string& name)
 {
@@ -30,7 +23,7 @@ void cmInstalledFile::SetName(cmMakefile* mf, const std::string& name)
   cmGeneratorExpression ge(backtrace);
 
   this->Name = name;
-  this->NameExpression = ge.Parse(name).release();
+  this->NameExpression = ge.Parse(name);
 }
 
 std::string const& cmInstalledFile::GetName() const
@@ -63,7 +56,7 @@ void cmInstalledFile::AppendProperty(cmMakefile const* mf,
   cmGeneratorExpression ge(backtrace);
 
   Property& property = this->Properties[prop];
-  property.ValueExpressions.push_back(ge.Parse(value).release());
+  property.ValueExpressions.push_back(ge.Parse(value));
 }
 
 bool cmInstalledFile::HasProperty(const std::string& prop) const
@@ -84,7 +77,7 @@ bool cmInstalledFile::GetProperty(const std::string& prop,
   std::string output;
   std::string separator;
 
-  for (auto ve : property.ValueExpressions) {
+  for (const auto& ve : property.ValueExpressions) {
     output += separator;
     output += ve->GetInput();
     separator = ";";
diff --git a/Source/cmInstalledFile.h b/Source/cmInstalledFile.h
index ee809ee..698151e 100644
--- a/Source/cmInstalledFile.h
+++ b/Source/cmInstalledFile.h
@@ -24,7 +24,7 @@ public:
   using CompiledGeneratorExpressionPtrType =
     std::unique_ptr<cmCompiledGeneratorExpression>;
 
-  using ExpressionVectorType = std::vector<cmCompiledGeneratorExpression*>;
+  using ExpressionVectorType = std::vector<CompiledGeneratorExpressionPtrType>;
 
   struct Property
   {
@@ -73,7 +73,7 @@ public:
 
 private:
   std::string Name;
-  cmCompiledGeneratorExpression* NameExpression = nullptr;
+  CompiledGeneratorExpressionPtrType NameExpression;
   PropertyMapType Properties;
 };
 
diff --git a/Source/cmOrderDirectories.cxx b/Source/cmOrderDirectories.cxx
index 9ee7127..0369af0 100644
--- a/Source/cmOrderDirectories.cxx
+++ b/Source/cmOrderDirectories.cxx
@@ -8,9 +8,9 @@
 #include <sstream>
 #include <vector>
 
+#include <cm/memory>
 #include <cmext/algorithm>
 
-#include "cmAlgorithms.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalGenerator.h"
 #include "cmMessageType.h"
@@ -250,11 +250,7 @@ cmOrderDirectories::cmOrderDirectories(cmGlobalGenerator* gg,
   this->Computed = false;
 }
 
-cmOrderDirectories::~cmOrderDirectories()
-{
-  cmDeleteAll(this->ConstraintEntries);
-  cmDeleteAll(this->ImplicitDirEntries);
-}
+cmOrderDirectories::~cmOrderDirectories() = default;
 
 std::vector<std::string> const& cmOrderDirectories::GetOrderedDirectories()
 {
@@ -288,14 +284,16 @@ void cmOrderDirectories::AddRuntimeLibrary(std::string const& fullPath,
 
       if (this->IsImplicitDirectory(dir)) {
         this->ImplicitDirEntries.push_back(
-          new cmOrderDirectoriesConstraintSOName(this, fullPath, soname));
+          cm::make_unique<cmOrderDirectoriesConstraintSOName>(this, fullPath,
+                                                              soname));
         return;
       }
     }
 
     // Construct the runtime information entry for this library.
     this->ConstraintEntries.push_back(
-      new cmOrderDirectoriesConstraintSOName(this, fullPath, soname));
+      cm::make_unique<cmOrderDirectoriesConstraintSOName>(this, fullPath,
+                                                          soname));
   } else {
     // This can happen if the same library is linked multiple times.
     // In that case the runtime information check need be done only
@@ -316,14 +314,15 @@ void cmOrderDirectories::AddLinkLibrary(std::string const& fullPath)
       std::string dir = cmSystemTools::GetFilenamePath(fullPath);
       if (this->IsImplicitDirectory(dir)) {
         this->ImplicitDirEntries.push_back(
-          new cmOrderDirectoriesConstraintLibrary(this, fullPath));
+          cm::make_unique<cmOrderDirectoriesConstraintLibrary>(this,
+                                                               fullPath));
         return;
       }
     }
 
     // Construct the link library entry.
     this->ConstraintEntries.push_back(
-      new cmOrderDirectoriesConstraintLibrary(this, fullPath));
+      cm::make_unique<cmOrderDirectoriesConstraintLibrary>(this, fullPath));
   }
 }
 
@@ -371,7 +370,7 @@ void cmOrderDirectories::CollectOriginalDirectories()
   this->AddOriginalDirectories(this->UserDirectories);
 
   // Add directories containing constraints.
-  for (cmOrderDirectoriesConstraint* entry : this->ConstraintEntries) {
+  for (const auto& entry : this->ConstraintEntries) {
     entry->AddDirectory();
   }
 
@@ -456,7 +455,7 @@ void cmOrderDirectories::FindImplicitConflicts()
   // Check for items in implicit link directories that have conflicts
   // in the explicit directories.
   std::ostringstream conflicts;
-  for (cmOrderDirectoriesConstraint* entry : this->ImplicitDirEntries) {
+  for (const auto& entry : this->ImplicitDirEntries) {
     entry->FindImplicitConflicts(conflicts);
   }
 
diff --git a/Source/cmOrderDirectories.h b/Source/cmOrderDirectories.h
index 23c5145..8ce53e0 100644
--- a/Source/cmOrderDirectories.h
+++ b/Source/cmOrderDirectories.h
@@ -6,6 +6,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
+#include <memory>
 #include <set>
 #include <string>
 #include <utility>
@@ -46,8 +47,9 @@ private:
 
   std::vector<std::string> OrderedDirectories;
 
-  std::vector<cmOrderDirectoriesConstraint*> ConstraintEntries;
-  std::vector<cmOrderDirectoriesConstraint*> ImplicitDirEntries;
+  std::vector<std::unique_ptr<cmOrderDirectoriesConstraint>> ConstraintEntries;
+  std::vector<std::unique_ptr<cmOrderDirectoriesConstraint>>
+    ImplicitDirEntries;
   std::vector<std::string> UserDirectories;
   std::vector<std::string> LanguageDirectories;
   cmsys::RegularExpression RemoveLibraryExtension;