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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <sal/config.h>
#include <cassert>
#include <cstdlib>
#include <limits>
#include <memory>
#include <o3tl/runtimetooustring.hxx>
#include <rtl/ustrbuf.hxx>
#include <rtl/ustring.hxx>
#include <sal/types.h>
#include <sal/backtrace.hxx>
#include "backtrace.h"
#include "backtraceasstring.hxx"
namespace {
struct FreeGuard {
FreeGuard(char ** theBuffer): buffer(theBuffer) {}
~FreeGuard() { std::free(buffer); }
char ** buffer;
};
}
OUString osl::detail::backtraceAsString(sal_uInt32 maxDepth) {
assert(maxDepth != 0);
auto const maxInt = static_cast<unsigned int>(
std::numeric_limits<int>::max());
if (maxDepth > maxInt) {
maxDepth = static_cast<sal_uInt32>(maxInt);
}
auto b1 = std::unique_ptr<void *[]>(new void *[maxDepth]);
int n = backtrace(b1.get(), static_cast<int>(maxDepth));
FreeGuard b2(backtrace_symbols(b1.get(), n));
b1.reset();
if (b2.buffer == nullptr) {
return OUString();
}
OUStringBuffer b3;
for (int i = 0; i != n; ++i) {
if (i != 0) {
b3.append("\n");
}
b3.append(o3tl::runtimeToOUString(b2.buffer[i]));
}
return b3.makeStringAndClear();
}
std::unique_ptr<BacktraceState> sal_backtrace_get(sal_uInt32 maxDepth)
{
assert(maxDepth != 0);
auto const maxInt = static_cast<unsigned int>(
std::numeric_limits<int>::max());
if (maxDepth > maxInt) {
maxDepth = static_cast<sal_uInt32>(maxInt);
}
auto b1 = new void *[maxDepth];
int n = backtrace(b1, static_cast<int>(maxDepth));
return std::unique_ptr<BacktraceState>(new BacktraceState{ b1, n });
}
OUString sal_backtrace_to_string(BacktraceState* backtraceState)
{
FreeGuard b2(backtrace_symbols(backtraceState->buffer, backtraceState->nDepth));
if (b2.buffer == nullptr) {
return OUString();
}
OUStringBuffer b3;
for (int i = 0; i != backtraceState->nDepth; ++i) {
if (i != 0) {
b3.append("\n");
}
b3.append(o3tl::runtimeToOUString(b2.buffer[i]));
}
return b3.makeStringAndClear();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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