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authorStefan Boberg <[email protected]>2026-03-15 22:53:37 +0100
committerStefan Boberg <[email protected]>2026-03-15 22:53:37 +0100
commitda216166aab918bc93ee73040c1eb6336ea6d026 (patch)
tree87263e1e70d975c640981a50474290cdad1382cc /src/zencore/memtrack
parentChange --noclean to --clean in toolchain verify script (diff)
parentMerge branch 'main' into sb/linux-build-improvements (diff)
downloadzen-sb/linux-build-improvements.tar.xz
zen-sb/linux-build-improvements.zip
Merge branch 'sb/linux-build-improvements' of ssh://arn-wd-l1704.localdomain:2222/ue-foundation/zen into sb/linux-build-improvementssb/linux-build-improvements
Diffstat (limited to 'src/zencore/memtrack')
-rw-r--r--src/zencore/memtrack/callstacktrace.cpp146
1 files changed, 77 insertions, 69 deletions
diff --git a/src/zencore/memtrack/callstacktrace.cpp b/src/zencore/memtrack/callstacktrace.cpp
index 4a7068568..013c51535 100644
--- a/src/zencore/memtrack/callstacktrace.cpp
+++ b/src/zencore/memtrack/callstacktrace.cpp
@@ -912,92 +912,100 @@ FBacktracer::GetBacktraceId(void* AddressOfReturnAddress)
# else // UE_CALLSTACK_TRACE_USE_UNWIND_TABLES
-namespace zen {
+////////////////////////////////////////////////////////////////////////////////
+class FBacktracer
+{
+public:
+ FBacktracer(FMalloc* InMalloc);
+ ~FBacktracer();
+ static FBacktracer* Get();
+ inline uint32_t GetBacktraceId(void* AddressOfReturnAddress);
+ uint32_t GetBacktraceId(uint64_t ReturnAddress);
+ void AddModule(uintptr_t Base, const char16_t* Name) {}
+ void RemoveModule(uintptr_t Base) {}
- ////////////////////////////////////////////////////////////////////////////////
- class FBacktracer
- {
- public:
- FBacktracer(FMalloc* InMalloc);
- ~FBacktracer();
- static FBacktracer* Get();
- inline uint32_t GetBacktraceId(void* AddressOfReturnAddress);
- uint32_t GetBacktraceId(uint64_t ReturnAddress);
- void AddModule(uintptr_t Base, const char16_t* Name) {}
- void RemoveModule(uintptr_t Base) {}
-
- private:
- static FBacktracer* Instance;
- FMalloc* Malloc;
- FCallstackTracer CallstackTracer;
- };
+private:
+ static FBacktracer* Instance;
+ FMalloc* Malloc;
+ FCallstackTracer CallstackTracer;
+};
- ////////////////////////////////////////////////////////////////////////////////
- FBacktracer* FBacktracer::Instance = nullptr;
+////////////////////////////////////////////////////////////////////////////////
+FBacktracer* FBacktracer::Instance = nullptr;
- ////////////////////////////////////////////////////////////////////////////////
- FBacktracer::FBacktracer(FMalloc* InMalloc) : Malloc(InMalloc), CallstackTracer(InMalloc) { Instance = this; }
+////////////////////////////////////////////////////////////////////////////////
+FBacktracer::FBacktracer(FMalloc* InMalloc) : Malloc(InMalloc), CallstackTracer(InMalloc)
+{
+ Instance = this;
+}
- ////////////////////////////////////////////////////////////////////////////////
- FBacktracer::~FBacktracer() {}
+////////////////////////////////////////////////////////////////////////////////
+FBacktracer::~FBacktracer()
+{
+}
- ////////////////////////////////////////////////////////////////////////////////
- FBacktracer* FBacktracer::Get() { return Instance; }
+////////////////////////////////////////////////////////////////////////////////
+FBacktracer*
+FBacktracer::Get()
+{
+ return Instance;
+}
- ////////////////////////////////////////////////////////////////////////////////
- uint32_t FBacktracer::GetBacktraceId(void* AddressOfReturnAddress)
- {
- const uint64_t ReturnAddress = *(uint64_t*)AddressOfReturnAddress;
- return GetBacktraceId(ReturnAddress);
- }
+////////////////////////////////////////////////////////////////////////////////
+uint32_t
+FBacktracer::GetBacktraceId(void* AddressOfReturnAddress)
+{
+ const uint64_t ReturnAddress = *(uint64_t*)AddressOfReturnAddress;
+ return GetBacktraceId(ReturnAddress);
+}
- ////////////////////////////////////////////////////////////////////////////////
- uint32_t FBacktracer::GetBacktraceId(uint64_t ReturnAddress)
- {
+////////////////////////////////////////////////////////////////////////////////
+uint32_t
+FBacktracer::GetBacktraceId(uint64_t ReturnAddress)
+{
# if !UE_BUILD_SHIPPING
- uint64_t StackFrames[256];
- int32_t NumStackFrames = FPlatformStackWalk::CaptureStackBackTrace(StackFrames, UE_ARRAY_COUNT(StackFrames));
- if (NumStackFrames > 0)
+ uint64_t StackFrames[256];
+ int32_t NumStackFrames = FPlatformStackWalk::CaptureStackBackTrace(StackFrames, UE_ARRAY_COUNT(StackFrames));
+ if (NumStackFrames > 0)
+ {
+ FCallstackTracer::FBacktraceEntry BacktraceEntry;
+ uint64_t BacktraceId = 0;
+ uint32_t FrameIdx = 0;
+ bool bUseAddress = false;
+ for (int32_t Index = 0; Index < NumStackFrames; Index++)
{
- FCallstackTracer::FBacktraceEntry BacktraceEntry;
- uint64_t BacktraceId = 0;
- uint32_t FrameIdx = 0;
- bool bUseAddress = false;
- for (int32_t Index = 0; Index < NumStackFrames; Index++)
+ if (!bUseAddress)
{
- if (!bUseAddress)
+ // start using backtrace only after ReturnAddress
+ if (StackFrames[Index] == (uint64_t)ReturnAddress)
{
- // start using backtrace only after ReturnAddress
- if (StackFrames[Index] == (uint64_t)ReturnAddress)
- {
- bUseAddress = true;
- }
- }
- if (bUseAddress || NumStackFrames == 1)
- {
- uint64_t RetAddr = StackFrames[Index];
- StackFrames[FrameIdx++] = RetAddr;
-
- // This is a simple order-dependent LCG. Should be sufficient enough
- BacktraceId += RetAddr;
- BacktraceId *= 0x30be8efa499c249dull;
+ bUseAddress = true;
}
}
+ if (bUseAddress || NumStackFrames == 1)
+ {
+ uint64_t RetAddr = StackFrames[Index];
+ StackFrames[FrameIdx++] = RetAddr;
- // Save the collected id
- BacktraceEntry.Hash = BacktraceId;
- BacktraceEntry.FrameCount = FrameIdx;
- BacktraceEntry.Frames = StackFrames;
-
- // Add to queue to be processed. This might block until there is room in the
- // queue (i.e. the processing thread has caught up processing).
- return CallstackTracer.AddCallstack(BacktraceEntry);
+ // This is a simple order-dependent LCG. Should be sufficient enough
+ BacktraceId += RetAddr;
+ BacktraceId *= 0x30be8efa499c249dull;
+ }
}
-# endif
- return 0;
+ // Save the collected id
+ BacktraceEntry.Hash = BacktraceId;
+ BacktraceEntry.FrameCount = FrameIdx;
+ BacktraceEntry.Frames = StackFrames;
+
+ // Add to queue to be processed. This might block until there is room in the
+ // queue (i.e. the processing thread has caught up processing).
+ return CallstackTracer.AddCallstack(BacktraceEntry);
}
+# endif
+ return 0;
+}
}
# endif // UE_CALLSTACK_TRACE_USE_UNWIND_TABLES
@@ -1047,7 +1055,7 @@ CallstackTrace_GetCurrentId()
# if PLATFORM_USE_CALLSTACK_ADDRESS_POINTER
return Instance->GetBacktraceId(StackAddress);
# else
- return Instance->GetBacktraceId((uint64_t)StackAddress);
+ return Instance->GetBacktraceId((uint64_t)StackAddress);
# endif
}