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Unified Diff: Source/platform/heap/StackFrameDepth.h

Issue 851563003: Revert of Oilpan: Query stack frame register instead of manual bookkeeping (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 5 years, 11 months ago
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Index: Source/platform/heap/StackFrameDepth.h
diff --git a/Source/platform/heap/StackFrameDepth.h b/Source/platform/heap/StackFrameDepth.h
deleted file mode 100644
index ed43873ed34980243d0dd379160111fb885c86f1..0000000000000000000000000000000000000000
--- a/Source/platform/heap/StackFrameDepth.h
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef StackFrameDepth_h
-#define StackFrameDepth_h
-
-#include "platform/PlatformExport.h"
-#include "wtf/Assertions.h"
-#include <stdint.h>
-
-namespace blink {
-
-// StackFrameDepth keeps track of current call stack frame depth.
-// Use isSafeToRecurse() to query if there is a room in current
-// call stack for more recursive call.
-class PLATFORM_EXPORT StackFrameDepth final {
-public:
- inline bool isSafeToRecurse()
- {
- ASSERT(m_stackFrameLimit);
-
- // Below comparison assumes callstack to glow downward,
- // which is true for all ABI Blink currently supports.
- return currentStackFrame() > m_stackFrameLimit;
- }
-
- static uintptr_t currentStackFrame(const char* dummy = nullptr)
- {
-#if COMPILER(GCC)
- return reinterpret_cast<uintptr_t>(__builtin_frame_address(0));
-#elif COMPILER(MSVC)
- return reinterpret_cast<uintptr_t>(&dummy) - sizeof(void*);
-#else
-#error "Stack frame pointer estimation not supported on this platform."
- return 0;
-#endif
- }
-
- void configureLimit();
-
-private:
- // The maximum depth of eager, unrolled trace() calls that is
- // considered safe and allowed.
- static const int kSafeStackFrameSize = 32 * 1024;
-
- uintptr_t m_stackFrameLimit;
-};
-
-} // namespace blink
-
-#endif // StackFrameDepth_h
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