From 3774242aa15db96bd4fe5506be5233ddcbc6c0cb Mon Sep 17 00:00:00 2001
From: Matt Kuruc <mkuruc@nvidia.com>
Date: Thu, 28 Dec 2023 10:51:06 -0800
Subject: [PATCH] Replace `boost::intrusive_ptr` with `TfIntrusiveTrackingPtr`
 in `Usd_Shared`

---
 pxr/usd/usd/shared.h | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/pxr/usd/usd/shared.h b/pxr/usd/usd/shared.h
index d8ccd9b495..295d1c038b 100644
--- a/pxr/usd/usd/shared.h
+++ b/pxr/usd/usd/shared.h
@@ -27,8 +27,8 @@
 #include "pxr/pxr.h"
 #include "pxr/usd/usd/api.h"
 #include "pxr/base/tf/hash.h"
+#include "pxr/base/tf/trackingPtr.h"
 
-#include <boost/smart_ptr/intrusive_ptr.hpp>
 #include <atomic>
 
 PXR_NAMESPACE_OPEN_SCOPE
@@ -66,11 +66,13 @@ template <class T>
 struct Usd_Shared
 {
     // Construct a Usd_Shared with a value-initialized T instance.
-    Usd_Shared() : _held(new Usd_Counted<T>()) {}
+    Usd_Shared() : _held(TfIntrusiveMakeTrackingPtr<Usd_Counted<T>>()) {}
     // Create a copy of \p obj.
-    explicit Usd_Shared(T const &obj) : _held(new Usd_Counted<T>(obj)) {}
+    explicit Usd_Shared(T const &obj) :
+        _held(TfIntrusiveMakeTrackingPtr<Usd_Counted<T>>(obj)) {}
     // Move from \p obj.
-    explicit Usd_Shared(T &&obj) : _held(new Usd_Counted<T>(std::move(obj))) {}
+    explicit Usd_Shared(T &&obj) :
+        _held(TfIntrusiveMakeTrackingPtr<Usd_Counted<T>>(std::move(obj))) {}
 
     // Create an empty shared, which may not be accessed via Get(),
     // GetMutable(), IsUnique(), Clone(), or MakeUnique().  This is useful when
@@ -86,7 +88,7 @@ struct Usd_Shared
     // Return true if no other Usd_Shared instance shares this instance's data.
     bool IsUnique() const { return _held->count == 1; }
     // Make a new copy of the held data and refer to it.
-    void Clone() { _held.reset(new Usd_Counted<T>(Get())); }
+    void Clone() { _held = TfIntrusiveMakeTrackingPtr<Usd_Counted<T>>(Get()); }
     // Ensure this Usd_Shared instance has unique data.  Equivalent to:
     // \code
     // if (not shared.IsUnique()) { shared.Clone(); }
@@ -108,7 +110,7 @@ struct Usd_Shared
         return TfHash()(sh._held->data);
     }
 private:
-    boost::intrusive_ptr<Usd_Counted<T>> _held;
+    TfIntrusiveTrackingPtr<Usd_Counted<T>> _held;
 };