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-rw-r--r--src/AllocationPool.h26
-rw-r--r--src/Globals.h18
2 files changed, 44 insertions, 0 deletions
diff --git a/src/AllocationPool.h b/src/AllocationPool.h
index b8fae4a95..d1769dc03 100644
--- a/src/AllocationPool.h
+++ b/src/AllocationPool.h
@@ -81,7 +81,19 @@ public:
void * space = malloc(sizeof(T));
if (space != nullptr)
{
+ #if defined(_MSC_VER) && defined(_DEBUG)
+ // The debugging-new that is set up using macros in Globals.h doesn't support the placement-new syntax used here.
+ // Temporarily disable the macro
+ #pragma push_macro("new")
+ #undef new
+ #endif
+
return new(space) T;
+
+ #if defined(_MSC_VER) && defined(_DEBUG)
+ // Re-enable the debugging-new macro
+ #pragma pop_macro("new")
+ #endif
}
else if (m_FreeList.size() == NumElementsInReserve)
{
@@ -95,7 +107,21 @@ public:
}
}
// placement new, used to initalize the object
+
+ #if defined(_MSC_VER) && defined(_DEBUG)
+ // The debugging-new that is set up using macros in Globals.h doesn't support the placement-new syntax used here.
+ // Temporarily disable the macro
+ #pragma push_macro("new")
+ #undef new
+ #endif
+
T * ret = new (m_FreeList.front()) T;
+
+ #if defined(_MSC_VER) && defined(_DEBUG)
+ // Re-enable the debugging-new macro
+ #pragma pop_macro("new")
+ #endif
+
m_FreeList.pop_front();
return ret;
}
diff --git a/src/Globals.h b/src/Globals.h
index 4e15473e1..f7116f8e0 100644
--- a/src/Globals.h
+++ b/src/Globals.h
@@ -60,6 +60,24 @@
// Use non-standard defines in <cmath>
#define _USE_MATH_DEFINES
+ #ifdef _DEBUG
+ // Override the "new" operator to include file and line specification for debugging memory leaks
+ // Ref.: https://social.msdn.microsoft.com/Forums/en-US/ebc7dd7a-f3c6-49f1-8a60-e381052f21b6/debugging-memory-leaks?forum=vcgeneral#53f0cc89-62fe-45e8-bbf0-56b89f2a1901
+ // This causes MSVC Debug runs to produce a report upon program exit, that contains memory-leaks
+ // together with the file:line information about where the memory was allocated.
+ // Note that this doesn't work with placement-new, which needs to temporarily #undef the macro
+ // (See AllocationPool.h for an example).
+ #ifdef _DEBUG
+ #define _CRTDBG_MAP_ALLOC
+ #include <stdlib.h>
+ #include <crtdbg.h>
+ #define DEBUG_CLIENTBLOCK new(_CLIENT_BLOCK, __FILE__, __LINE__)
+ #define new DEBUG_CLIENTBLOCK
+ // For some reason this works magically - each "new X" gets replaced as "new(_CLIENT_BLOCK, "file", line) X"
+ // The CRT has a definition for this operator new that stores the debugging info for leak-finding later.
+ #endif
+ #endif
+
#elif defined(__GNUC__)
// TODO: Can GCC explicitly mark classes as abstract (no instances can be created)?