SL-15962 Add hooks for tracy memory profiling

1 files changed, 42 insertions, 0 deletions

diff --git a/indra/llcommon/llcommon.cpp b/indra/llcommon/llcommon.cpp
index 96be913d17..da61e7539a 100644
--- a/indra/llcommon/llcommon.cpp
+++ b/indra/llcommon/llcommon.cpp
@@ -33,6 +33,48 @@
 #include "lltracethreadrecorder.h"
 #include "llcleanup.h"
 
+#if (TRACY_ENABLE)
+// Override new/delet for tracy memory profiling
+void *operator new(size_t size)
+{
+    auto ptr = (malloc) (size);
+    if (!ptr)
+    {
+        throw std::bad_alloc();
+        return nullptr;
+    }
+    TracyAlloc(ptr, size);
+    return ptr;
+}
+
+void operator delete(void *ptr) noexcept
+{
+    TracyFree(ptr);
+    (free)(ptr);
+}
+
+// C-style malloc/free can't be so easily overridden, so we define tracy versions and use
+// a pre-processor #define in linden_common.h to redirect to them. The parens around the native
+// functions below prevents recursive substitution by the preprocessor.
+//
+// Unaligned mallocs are rare in LL code but hooking them causes problems in 3p lib code (looking at
+// you, Havok), so we'll only capture the aligned version.
+
+void *tracy_aligned_malloc(size_t size, size_t alignment)
+{
+    auto ptr = (_aligned_malloc) (size, alignment);
+    if (ptr) TracyAlloc(ptr, size);
+    return ptr;
+}
+
+void tracy_aligned_free(void *memblock)
+{
+    TracyFree(memblock);
+    (_aligned_free)(memblock);
+}
+
+#endif
+
 //static
 BOOL LLCommon::sAprInitialized = FALSE;