116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/*
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* Copyright © 2020 Google, Inc.
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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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdio.h>
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#include <gtest/gtest.h>
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#include "util/macros.h"
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#include "util/u_debug_stack.h"
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static void ATTRIBUTE_NOINLINE
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func_a(void)
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{
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struct debug_stack_frame backtrace[16];
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fprintf(stderr, "--- backtrace from func_a:\n");
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debug_backtrace_capture(backtrace, 0, 16);
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debug_backtrace_dump(backtrace, 16);
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}
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static void ATTRIBUTE_NOINLINE
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func_b(void)
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{
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struct debug_stack_frame backtrace[16];
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func_a();
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fprintf(stderr, "--- backtrace from func_b:\n");
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debug_backtrace_capture(backtrace, 0, 16);
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debug_backtrace_dump(backtrace, 16);
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}
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static void ATTRIBUTE_NOINLINE
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func_c(struct debug_stack_frame *frames)
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{
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debug_backtrace_capture(frames, 0, 16);
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}
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TEST(u_debug_stack_test, basics)
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{
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struct debug_stack_frame backtrace[16];
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struct debug_stack_frame stored_backtrace[16];
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func_c(stored_backtrace);
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fprintf(stderr, "--- backtrace from main to stderr:\n");
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debug_backtrace_capture(backtrace, 0, 16);
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debug_backtrace_print(stderr, backtrace, 16);
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fprintf(stderr, "--- backtrace from main again to debug_printf:\n");
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debug_backtrace_capture(backtrace, 0, 16);
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debug_backtrace_dump(backtrace, 16);
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func_a();
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func_b();
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fprintf(stderr, "--- stored backtrace from start of main:\n");
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debug_backtrace_dump(stored_backtrace, 16);
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}
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#if _POSIX_C_SOURCE >= 200809L
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TEST(u_debug_stack_test, capture_not_overwritten)
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{
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struct debug_stack_frame backtrace1[16], backtrace2[16];
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FILE *fp;
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char *bt1, *bt2;
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size_t size;
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/* Old android implementation uses one global capture per thread. Test that
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* we can store multiple captures and that they decode to different
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* backtraces.
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*/
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func_c(backtrace1);
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debug_backtrace_capture(backtrace2, 0, 16);
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fp = open_memstream(&bt1, &size);
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debug_backtrace_print(fp, backtrace1, 16);
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fclose(fp);
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fp = open_memstream(&bt2, &size);
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debug_backtrace_print(fp, backtrace2, 16);
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fclose(fp);
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if (size > 0) {
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EXPECT_STRNE(bt1, bt2);
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}
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free(bt1);
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free(bt2);
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}
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#endif
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