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5ae7098eba
The previous implementation kept a hashtable of a Backtrace object per thread. debug_backtrace_capture is supposed to store a backtrace in the passed in debug_stack_frame array, but instead overwrote the per-thread Backtrace object. This new version works more like the libunwind based capture. We hash the file and symbol names and store pointers in the debug_stack_frame struct. This way debug_backtrace_capture doesn't overwrite previous captures or allocate memory that needs to be freed. Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6112>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef U_DEBUG_STACK_H_
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#define U_DEBUG_STACK_H_
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#include <stdio.h>
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#ifdef HAVE_LIBUNWIND
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#define UNW_LOCAL_ONLY
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#include <libunwind.h>
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#endif
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/**
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* @file
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* Stack backtracing.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Represent a frame from a stack backtrace.
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*
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#if defined(PIPE_OS_WINDOWS) && !defined(HAVE_LIBUNWIND)
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* XXX: Do not change this. (passed to Windows' CaptureStackBackTrace())
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#endif
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*
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* TODO: This should be refactored as a void * typedef.
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*/
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struct debug_stack_frame
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{
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#if defined(HAVE_ANDROID_PLATFORM) || defined(HAVE_LIBUNWIND)
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const char *procname;
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uint64_t start_ip;
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unsigned off;
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const char *map;
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unsigned int map_off;
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#else
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const void *function;
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#endif
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};
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void
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debug_backtrace_capture(struct debug_stack_frame *backtrace,
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unsigned start_frame,
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unsigned nr_frames);
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void
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debug_backtrace_dump(const struct debug_stack_frame *backtrace,
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unsigned nr_frames);
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void
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debug_backtrace_print(FILE *f,
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const struct debug_stack_frame *backtrace,
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unsigned nr_frames);
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#ifdef __cplusplus
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}
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#endif
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#endif /* U_DEBUG_STACK_H_ */
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