52 lines
1.5 KiB
PHP
52 lines
1.5 KiB
PHP
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// Copyright 2000 - 2007 Google Inc.
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// All rights reserved.
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//
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// Author: Sanjay Ghemawat
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//
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// Portable implementation - just use glibc
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//
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// Note: The glibc implementation may cause a call to malloc.
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// This can cause a deadlock in HeapProfiler.
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#ifndef ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
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#define ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
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#include <execinfo.h>
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#include <cstring>
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#include "absl/debugging/stacktrace.h"
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template <bool IS_STACK_FRAMES, bool IS_WITH_CONTEXT>
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static int UnwindImpl(void** result, int* sizes, int max_depth, int skip_count,
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const void *ucp, int *min_dropped_frames) {
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static const int kStackLength = 64;
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void * stack[kStackLength];
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int size;
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size = backtrace(stack, kStackLength);
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skip_count++; // we want to skip the current frame as well
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int result_count = size - skip_count;
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if (result_count < 0)
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result_count = 0;
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if (result_count > max_depth)
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result_count = max_depth;
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for (int i = 0; i < result_count; i++)
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result[i] = stack[i + skip_count];
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if (IS_STACK_FRAMES) {
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// No implementation for finding out the stack frame sizes yet.
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memset(sizes, 0, sizeof(*sizes) * result_count);
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}
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if (min_dropped_frames != nullptr) {
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if (size - skip_count - max_depth > 0) {
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*min_dropped_frames = size - skip_count - max_depth;
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} else {
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*min_dropped_frames = 0;
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}
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}
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return result_count;
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}
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#endif // ABSL_DEBUGGING_INTERNAL_STACKTRACE_GENERIC_INL_H_
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