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https://gitlab.freedesktop.org/mesa/mesa.git
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b1bd6aa21a
For the same reason why we used to have USE_LIBBACKTRACE with the old Android makefiles, allow to build Mesa without linking to it. In recent VNDK versions, libbacktrace isn't available. When building without linking libbacktrace, for some reason some symbols related to C++ exception handling are exposed. Allow them in the symbols check script. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Sergi Blanch Torné <sergi.blanch.torne@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20019>
149 lines
No EOL
4.3 KiB
C++
149 lines
No EOL
4.3 KiB
C++
/*
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* Copyright (C) 2018 Stefan Schake <stschake@gmail.com>
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "u_debug_stack.h"
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#if WITH_LIBBACKTRACE
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#include <backtrace/Backtrace.h>
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#include "util/simple_mtx.h"
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#include "util/u_debug.h"
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#include "util/hash_table.h"
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#include "util/u_thread.h"
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static hash_table *symbol_table;
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static simple_mtx_t table_mutex = SIMPLE_MTX_INITIALIZER;
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static const char *
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intern_symbol(const char *symbol)
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{
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if (!symbol_table)
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symbol_table = _mesa_hash_table_create(NULL, NULL, _mesa_key_string_equal);
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uint32_t hash = _mesa_hash_string(symbol);
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hash_entry *entry =
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_mesa_hash_table_search_pre_hashed(symbol_table, hash, symbol);
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if (!entry)
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entry = _mesa_hash_table_insert_pre_hashed(symbol_table, hash, symbol, strdup(symbol));
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return (const char *) entry->data;
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}
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void
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debug_backtrace_capture(debug_stack_frame *backtrace,
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unsigned start_frame,
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unsigned nr_frames)
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{
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Backtrace *bt;
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if (!nr_frames)
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return;
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bt = Backtrace::Create(BACKTRACE_CURRENT_PROCESS,
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BACKTRACE_CURRENT_THREAD);
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if (bt == NULL) {
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for (unsigned i = 0; i < nr_frames; i++)
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backtrace[i].procname = NULL;
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return;
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}
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/* Add one to exclude this call. Unwind already ignores itself. */
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bt->Unwind(start_frame + 1);
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simple_mtx_lock(&table_mutex);
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for (unsigned i = 0; i < nr_frames; i++) {
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const backtrace_frame_data_t* frame = bt->GetFrame(i);
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if (frame) {
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backtrace[i].procname = intern_symbol(frame->func_name.c_str());
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backtrace[i].start_ip = frame->pc;
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backtrace[i].off = frame->func_offset;
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backtrace[i].map = intern_symbol(frame->map.Name().c_str());
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backtrace[i].map_off = frame->rel_pc;
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} else {
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backtrace[i].procname = NULL;
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}
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}
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simple_mtx_unlock(&table_mutex);
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delete bt;
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}
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void
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debug_backtrace_dump(const debug_stack_frame *backtrace,
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unsigned nr_frames)
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{
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for (unsigned i = 0; i < nr_frames; i++) {
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if (backtrace[i].procname)
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debug_printf(
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"%s(+0x%x)\t%012" PRIx64 ": %s+0x%x\n",
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backtrace[i].map,
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backtrace[i].map_off,
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backtrace[i].start_ip,
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backtrace[i].procname,
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backtrace[i].off);
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}
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}
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void
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debug_backtrace_print(FILE *f,
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const debug_stack_frame *backtrace,
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unsigned nr_frames)
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{
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for (unsigned i = 0; i < nr_frames; i++) {
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if (backtrace[i].procname)
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fprintf(f,
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"%s(+0x%x)\t%012" PRIx64 ": %s+0x%x\n",
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backtrace[i].map,
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backtrace[i].map_off,
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backtrace[i].start_ip,
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backtrace[i].procname,
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backtrace[i].off);
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}
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}
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#else
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void
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debug_backtrace_capture(debug_stack_frame *backtrace,
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unsigned start_frame,
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unsigned nr_frames)
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{
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}
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void
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debug_backtrace_dump(const debug_stack_frame *backtrace,
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unsigned nr_frames)
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{
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}
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void
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debug_backtrace_print(FILE *f,
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const debug_stack_frame *backtrace,
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unsigned nr_frames)
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{
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}
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#endif // WITH_LIBBACKTRACE
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