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src/share/vm/utilities/nativeCallStack.cpp

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*** 1,7 **** /* ! * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. --- 1,7 ---- /* ! * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.
*** 31,40 **** --- 31,53 ---- NativeCallStack::NativeCallStack(int toSkip, bool fillStack) : _hash_value(0) { if (fillStack) { + // We need to skip the NativeCallStack::NativeCallStack frame if a tail call is NOT used + // to call os::get_native_stack. A tail call is used if _NMT_NOINLINE_ is not defined + // (which means this is not a slowdebug build), and we are on 64-bit (except Windows). + // This is not necessarily a rule, but what has been obvserved to date. + #define TAIL_CALL (!defined(_NMT_NOINLINE_) && !defined(WINDOWS) && defined(_LP64)) + #if !TAIL_CALL + toSkip++; + #if (defined(_NMT_NOINLINE_) && defined(BSD) && defined(_LP64)) + // Mac OS X slowdebug builds have this odd behavior where NativeCallStack::NativeCallStack + // appears as two frames, so we need to skip an extra frame. + toSkip++; + #endif + #endif os::get_native_stack(_stack, NMT_TrackingStackDepth, toSkip); } else { for (int index = 0; index < NMT_TrackingStackDepth; index ++) { _stack[index] = NULL; }
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