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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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619fb35df7
This patch implements the flag --delta-stacktrace=yes/no. Yes indicates to calculate the full history stack traces by changing just the last frame if no call/return instruction was executed. This can speed up helgrind by up to 25%. This flags is currently set to yes only on linux x86 and amd64, as some platform dependent validation of the used heuristics is needed before setting the default to yes on a platform. See function check_cached_rcec_ok in libhb_core.c for more details about how to validate/check the behaviour on a new platform.
101 lines
4.1 KiB
C
101 lines
4.1 KiB
C
/*--------------------------------------------------------------------*/
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/*--- Stack traces: getting, traversing, printing. ---*/
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/*--- tool_stacktrace.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2017 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file COPYING.
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*/
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#ifndef __PUB_TOOL_STACKTRACE_H
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#define __PUB_TOOL_STACKTRACE_H
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#include "pub_tool_basics.h" // Addr
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// The basic stack trace type: just an array of code addresses.
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typedef Addr* StackTrace;
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// Walks the stack to get instruction pointers from the top stack frames
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// for thread 'tid'. Maximum of 'n_ips' addresses put into 'ips';
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// 0 is the top of the stack, 1 is its caller, etc. Everything from
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// ips[return_value] onwards is undefined and should not be read.
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// The initial IP value to use is adjusted by first_ip_delta before
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// the stack is unwound. A safe value to pass is zero.
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//
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// The specific meaning of the returned addresses is:
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//
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// [0] is the IP of thread 'tid'
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// [1] points to the last byte of the call instruction that called [0].
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// [2] points to the last byte of the call instruction that called [1].
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// etc etc
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//
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// Hence ips[0 .. return_value-1] should all point to currently
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// 'active' (in the sense of a stack of unfinished function calls)
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// instructions. [0] points to the start of an arbitrary instruction.#
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// [1 ..] point to the last byte of a chain of call instructions.
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//
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// If sps and fps are non-NULL, the corresponding frame-pointer and
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// stack-pointer values for each frame are stored there.
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extern UInt VG_(get_StackTrace) ( ThreadId tid,
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/*OUT*/StackTrace ips, UInt n_ips,
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/*OUT*/StackTrace sps,
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/*OUT*/StackTrace fps,
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Word first_ip_delta );
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// Same as VG_(get_StackTrace), but applies a delta to the first SP used for
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// unwinding the first frame.
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extern UInt VG_(get_StackTrace_with_deltas)(
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ThreadId tid,
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/*OUT*/StackTrace ips, UInt n_ips,
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/*OUT*/StackTrace sps,
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/*OUT*/StackTrace fps,
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Word first_ip_delta,
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Word first_sp_delta
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);
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// Apply a function to every element in the StackTrace. The parameter
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// 'n' gives the index of the passed ip. 'opaque' is an arbitrary
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// pointer provided to each invocation of 'action' (a poor man's
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// closure). Doesn't go below main() unless --show-below-main=yes is
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// set.
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extern void VG_(apply_StackTrace)(
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void(*action)(UInt n, Addr ip, void* opaque),
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void* opaque,
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StackTrace ips, UInt n_ips
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);
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// Print a StackTrace.
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extern void VG_(pp_StackTrace) ( StackTrace ips, UInt n_ips );
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// Gets and immediately prints a StackTrace. Just a bit simpler than
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// calling VG_(get_StackTrace)() then VG_(pp_StackTrace)().
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extern void VG_(get_and_pp_StackTrace) ( ThreadId tid, UInt n_ips );
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#endif // __PUB_TOOL_STACKTRACE_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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