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update 2024-10-07 20:38:53

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commit 073258de65
16 changed files with 1019 additions and 18 deletions
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18
rblibtorrent/Makefile
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@ -35,24 +35,6 @@ define Package/rblibtorrent/description
full featured client, although it comes with a working example client.
endef
TRY_SIGNAL_VERSION:=751a7e5a5be14892bcfdff1e63c653bcbf71cf39
TRY_SIGNAL_FILE:=$(PKG_NAME)-try_signal-$(TRY_SIGNAL_VERSION).tar.xz
define Download/try_signal
VERSION:=$(TRY_SIGNAL_VERSION)
SUBDIR:=deps/try_signal
FILE:=$(TRY_SIGNAL_FILE)
URL:=https://github.com/arvidn/try_signal.git
MIRROR_HASH:=32a432e35e81c79f21c49744f00696c112e0deab45d15d91c61ceb63fe25a5f8
PROTO:=git
endef
$(eval $(call Download,try_signal))
define Build/Prepare
$(Build/Prepare/Default)
xzcat $(DL_DIR)/$(TRY_SIGNAL_FILE) | tar -C $(PKG_BUILD_DIR) $(TAR_OPTIONS)
endef
TARGET_CFLAGS += $(FPIC) -ffunction-sections -fdata-sections
TARGET_LDFLAGS += -Wl,--gc-sections,--as-needed

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rblibtorrent/src/deps/try_signal/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 2.8.12)
project(try_signal)
add_library(try_signal signal_error_code try_signal)
target_include_directories(try_signal PUBLIC .)

18
rblibtorrent/src/deps/try_signal/Jamfile Normal file
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@ -0,0 +1,18 @@
lib try_signal
: # sources
signal_error_code.cpp try_signal.cpp
: # requirements
: # default build
<link>static
: # usage requirements
<include>.
;
exe test : test.cpp : <library>try_signal <link>static ;
explicit test ;
exe example : example.cpp : <library>try_signal <link>static ;
explicit example ;
install stage_test : test : <location>. ;

29
rblibtorrent/src/deps/try_signal/LICENSE Normal file
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@ -0,0 +1,29 @@
BSD 3-Clause License
Copyright (c) 2016, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

53
rblibtorrent/src/deps/try_signal/README.rst Normal file
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@ -0,0 +1,53 @@
try_signal
==========
.. image:: https://travis-ci.org/arvidn/try_signal.svg?branch=master
:target: https://travis-ci.org/arvidn/try_signal
.. image:: https://ci.appveyor.com/api/projects/status/le8jjroaai8081f1?svg=true
:target: https://ci.appveyor.com/project/arvidn/try-signal/branch/master
The ``try_signal`` library provide a way to turn signals into C++ exceptions.
This is especially useful when performing disk I/O via memory mapped files,
where I/O errors are reported as ``SIGBUS`` and ``SIGSEGV`` or as structured
exceptions on windows.
The function ``try_signal`` takes a function object that will be executed once.
If the function causes a signal (or structured exception) to be raised, it will
throw a C++ exception. Note that RAII may not be relied upon within this function.
It may not rely on destructors being called. Stick to simple operations like
memcopy.
Example::
#include <stdexcept>
#include <vector>
#include <numeric>
#include "try_signal.hpp"
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
int main() try
{
int fd = open("test_file", O_RDWR);
void* map = mmap(nullptr, 1024, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
std::vector<char> buf(1024);
std::iota(buf.begin(), buf.end(), 0);
// disk full or access after EOF are reported as exceptions
sig::try_signal([&]{
std::memcpy(map, buf.data(), buf.size());
});
munmap(map, 1024);
close(fd);
return 0;
}
catch (std::exception const& e)
{
fprintf(stderr, "exited with exception: %s\n", e.what());
return 1;
}

50
rblibtorrent/src/deps/try_signal/appveyor.yml Normal file
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@ -0,0 +1,50 @@
version: "{build}"
branches:
only:
- master
os: Visual Studio 2015
clone_depth: 1
environment:
matrix:
- variant: debug
compiler: msvc-14.0
model: 64
- variant: debug
compiler: msvc-14.0
model: 32
- variant: release
compiler: msvc-14.0
model: 64
- variant: debug
compiler: gcc
model: 32
- variant: debug
compiler: gcc
model: 64
- variant: release
compiler: gcc
model: 32
install:
- set ROOT_DIRECTORY=%CD%
- set BOOST_ROOT=c:\Libraries\boost_1_67_0
- set BOOST_BUILD_PATH=%BOOST_ROOT%\tools\build
- echo %BOOST_ROOT%
- echo %BOOST_BUILD_PATH%
- set PATH=%PATH%;%BOOST_BUILD_PATH%\src\engine\bin.ntx86
- ps: '"using msvc : 14.0 ;`nusing gcc : : : <cxxflags>-std=c++11 ;" | Set-Content $env:HOMEDRIVE\$env:HOMEPATH\user-config.jam'
- type %HOMEDRIVE%%HOMEPATH%\user-config.jam
- set PATH=c:\msys64\mingw32\bin;%PATH%
- g++ --version
- python --version
- echo %ROOT_DIRECTORY%
- cd %BOOST_BUILD_PATH%\src\engine
- build.bat >nul
- cd %ROOT_DIRECTORY%
build_script:
# examples
- b2.exe warnings=all warnings-as-errors=on -j2 %compiler% address-model=%model% variant=%variant% stage_test
test_script:
- test

31
rblibtorrent/src/deps/try_signal/example.cpp Normal file
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#include <stdexcept>
#include <vector>
#include <numeric>
#include "try_signal.hpp"
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
int main() try
{
int fd = open("test_file", O_RDWR);
void* map = mmap(nullptr, 1024, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
std::vector<char> buf(1024);
std::iota(buf.begin(), buf.end(), 0);
// disk full or access after EOF are reported as exceptions
sig::try_signal([&]{
std::memcpy(map, buf.data(), buf.size());
});
munmap(map, 1024);
close(fd);
return 0;
}
catch (std::exception const& e)
{
fprintf(stderr, "exited with exception: %s\n", e.what());
return 1;
}

0
rblibtorrent/src/deps/try_signal/project-root.jam Normal file
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209
rblibtorrent/src/deps/try_signal/signal_error_code.cpp Normal file
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@ -0,0 +1,209 @@
/*
Copyright (c) 2016, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <system_error>
#include <string>
#include "signal_error_code.hpp"
namespace {
struct signal_error_category : std::error_category
{
const char* name() const noexcept override
{ return "signal"; }
std::string message(int ev) const noexcept override
{
#define SIGNAL_CASE(x) case sig::errors::error_code_enum:: x: return #x;
switch (ev)
{
SIGNAL_CASE(abort)
SIGNAL_CASE(alarm)
SIGNAL_CASE(arithmetic_exception)
SIGNAL_CASE(hangup)
SIGNAL_CASE(illegal)
SIGNAL_CASE(interrupt)
SIGNAL_CASE(kill)
SIGNAL_CASE(pipe)
SIGNAL_CASE(quit)
case sig::errors::error_code_enum::segmentation: return "segmentation fault";
SIGNAL_CASE(terminate)
SIGNAL_CASE(user1)
SIGNAL_CASE(user2)
SIGNAL_CASE(child)
SIGNAL_CASE(cont)
SIGNAL_CASE(stop)
SIGNAL_CASE(terminal_stop)
SIGNAL_CASE(terminal_in)
SIGNAL_CASE(terminal_out)
SIGNAL_CASE(bus)
#ifdef SIGPOLL
SIGNAL_CASE(poll)
#endif
SIGNAL_CASE(profiler)
SIGNAL_CASE(system_call)
SIGNAL_CASE(trap)
SIGNAL_CASE(urgent_data)
SIGNAL_CASE(virtual_timer)
SIGNAL_CASE(cpu_limit)
SIGNAL_CASE(file_size_limit)
default: return "unknown";
}
#undef SIGNAL_CASE
}
std::error_condition default_error_condition(int ev) const noexcept override
{ return {ev, *this}; }
};
} // anonymous namespace
namespace sig {
namespace errors {
std::error_code make_error_code(error_code_enum e)
{
return {e, sig_category()};
}
std::error_condition make_error_condition(error_code_enum e)
{
return {e, sig_category()};
}
} // namespace errors
std::error_category& sig_category()
{
static signal_error_category signal_category;
return signal_category;
}
#ifdef _WIN32
namespace {
sig::errors::error_code_enum map_exception_code(int const ev)
{
switch (ev)
{
case seh_errors::error_code_enum::access_violation:
case seh_errors::error_code_enum::array_bounds_exceeded:
case seh_errors::error_code_enum::guard_page:
case seh_errors::error_code_enum::stack_overflow:
case seh_errors::error_code_enum::flt_stack_check:
case seh_errors::error_code_enum::in_page_error:
return sig::errors::segmentation;
case seh_errors::error_code_enum::breakpoint:
case seh_errors::error_code_enum::single_step:
return sig::errors::trap;
case seh_errors::error_code_enum::datatype_misalignment:
return sig::errors::bus;
case seh_errors::error_code_enum::flt_denormal_operand:
case seh_errors::error_code_enum::flt_divide_by_zero:
case seh_errors::error_code_enum::flt_inexact_result:
case seh_errors::error_code_enum::flt_invalid_operation:
case seh_errors::error_code_enum::flt_overflow:
case seh_errors::error_code_enum::flt_underflow:
case seh_errors::error_code_enum::int_divide_by_zero:
case seh_errors::error_code_enum::int_overflow:
return sig::errors::arithmetic_exception;
case seh_errors::error_code_enum::illegal_instruction:
case seh_errors::error_code_enum::invalid_disposition:
case seh_errors::error_code_enum::priv_instruction:
case seh_errors::error_code_enum::noncontinuable_exception:
case seh_errors::error_code_enum::status_unwind_consolidate:
return sig::errors::illegal;
case seh_errors::error_code_enum::invalid_handle:
return sig::errors::pipe;
default:
return sig::errors::illegal;
}
}
struct seh_error_category : std::error_category
{
const char* name() const noexcept override
{ return "SEH"; }
std::string message(int ev) const noexcept override
{
#define SIGNAL_CASE(x) case sig::seh_errors::error_code_enum:: x: return #x;
switch (ev)
{
SIGNAL_CASE(access_violation)
SIGNAL_CASE(array_bounds_exceeded)
SIGNAL_CASE(guard_page)
SIGNAL_CASE(stack_overflow)
SIGNAL_CASE(flt_stack_check)
SIGNAL_CASE(in_page_error)
SIGNAL_CASE(breakpoint)
SIGNAL_CASE(single_step)
SIGNAL_CASE(datatype_misalignment)
SIGNAL_CASE(flt_denormal_operand)
SIGNAL_CASE(flt_divide_by_zero)
SIGNAL_CASE(flt_inexact_result)
SIGNAL_CASE(flt_invalid_operation)
SIGNAL_CASE(flt_overflow)
SIGNAL_CASE(flt_underflow)
SIGNAL_CASE(int_divide_by_zero)
SIGNAL_CASE(int_overflow)
SIGNAL_CASE(illegal_instruction)
SIGNAL_CASE(invalid_disposition)
SIGNAL_CASE(priv_instruction)
SIGNAL_CASE(noncontinuable_exception)
SIGNAL_CASE(status_unwind_consolidate)
SIGNAL_CASE(invalid_handle)
default: return "unknown";
}
#undef SIGNAL_CASE
}
std::error_condition default_error_condition(int ev) const noexcept override
{ return std::error_condition(map_exception_code(ev), sig_category()); }
};
} // anonymous namespace
namespace seh_errors {
std::error_code make_error_code(error_code_enum e)
{
return {static_cast<int>(e), seh_category()};
}
} // namespace errors
std::error_category& seh_category()
{
static seh_error_category seh_category;
return seh_category;
}
#endif
} // namespace sig

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rblibtorrent/src/deps/try_signal/signal_error_code.hpp Normal file
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/*
Copyright (c) 2016, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SIGNAL_ERROR_CODE_HPP_INCLUDED
#define SIGNAL_ERROR_CODE_HPP_INCLUDED
#include <signal.h>
#include <system_error>
#ifdef _WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#ifdef __GNUC__
#include <excpt.h>
#else
#include <eh.h>
#endif
#endif
namespace sig {
namespace errors {
#ifdef _WIN32
#define SIG_ENUM(name, sig) name,
#else
#define SIG_ENUM(name, sig) name = sig,
#endif
enum error_code_enum: int
{
SIG_ENUM(abort, SIGABRT)
SIG_ENUM(alarm, SIGALRM)
SIG_ENUM(arithmetic_exception, SIGFPE)
SIG_ENUM(hangup, SIGHUP)
SIG_ENUM(illegal, SIGILL)
SIG_ENUM(interrupt, SIGINT)
SIG_ENUM(kill, SIGKILL)
SIG_ENUM(pipe, SIGPIPE)
SIG_ENUM(quit, SIGQUIT)
SIG_ENUM(segmentation, SIGSEGV)
SIG_ENUM(terminate, SIGTERM)
SIG_ENUM(user1, SIGUSR1)
SIG_ENUM(user2, SIGUSR2)
SIG_ENUM(child, SIGCHLD)
SIG_ENUM(cont, SIGCONT)
SIG_ENUM(stop, SIGSTOP)
SIG_ENUM(terminal_stop, SIGTSTP)
SIG_ENUM(terminal_in, SIGTTIN)
SIG_ENUM(terminal_out, SIGTTOU)
SIG_ENUM(bus, SIGBUS)
#ifdef SIGPOLL
SIG_ENUM(poll, SIGPOLL)
#endif
SIG_ENUM(profiler, SIGPROF)
SIG_ENUM(system_call, SIGSYS)
SIG_ENUM(trap, SIGTRAP)
SIG_ENUM(urgent_data, SIGURG)
SIG_ENUM(virtual_timer, SIGVTALRM)
SIG_ENUM(cpu_limit, SIGXCPU)
SIG_ENUM(file_size_limit, SIGXFSZ)
};
#undef SIG_ENUM
std::error_code make_error_code(error_code_enum e);
std::error_condition make_error_condition(error_code_enum e);
} // namespace errors
std::error_category& sig_category();
#ifdef _WIN32
namespace seh_errors {
// standard error codes are "int", the win32 exceptions are DWORD (i.e.
// unsigned int). We coerce them into int here for compatibility, and we're
// not concerned about their arithmetic
enum error_code_enum: int
{
access_violation = int(EXCEPTION_ACCESS_VIOLATION),
array_bounds_exceeded = int(EXCEPTION_ARRAY_BOUNDS_EXCEEDED),
guard_page = int(EXCEPTION_GUARD_PAGE),
stack_overflow = int(EXCEPTION_STACK_OVERFLOW),
flt_stack_check = int(EXCEPTION_FLT_STACK_CHECK),
in_page_error = int(EXCEPTION_IN_PAGE_ERROR),
breakpoint = int(EXCEPTION_BREAKPOINT),
single_step = int(EXCEPTION_SINGLE_STEP),
datatype_misalignment = int(EXCEPTION_DATATYPE_MISALIGNMENT),
flt_denormal_operand = int(EXCEPTION_FLT_DENORMAL_OPERAND),
flt_divide_by_zero = int(EXCEPTION_FLT_DIVIDE_BY_ZERO),
flt_inexact_result = int(EXCEPTION_FLT_INEXACT_RESULT),
flt_invalid_operation = int(EXCEPTION_FLT_INVALID_OPERATION),
flt_overflow = int(EXCEPTION_FLT_OVERFLOW),
flt_underflow = int(EXCEPTION_FLT_UNDERFLOW),
int_divide_by_zero = int(EXCEPTION_INT_DIVIDE_BY_ZERO),
int_overflow = int(EXCEPTION_INT_OVERFLOW),
illegal_instruction = int(EXCEPTION_ILLEGAL_INSTRUCTION),
invalid_disposition = int(EXCEPTION_INVALID_DISPOSITION),
priv_instruction = int(EXCEPTION_PRIV_INSTRUCTION),
noncontinuable_exception = int(EXCEPTION_NONCONTINUABLE_EXCEPTION),
status_unwind_consolidate = int(STATUS_UNWIND_CONSOLIDATE),
invalid_handle = int(EXCEPTION_INVALID_HANDLE),
};
std::error_code make_error_code(error_code_enum e);
}
std::error_category& seh_category();
#endif // _WIN32
} // namespace sig
namespace std
{
template<>
struct is_error_code_enum<sig::errors::error_code_enum> : std::true_type {};
template<>
struct is_error_condition_enum<sig::errors::error_code_enum> : std::true_type {};
#ifdef _WIN32
template<>
struct is_error_code_enum<sig::seh_errors::error_code_enum> : std::true_type {};
#endif
} // namespace std
#endif

47
rblibtorrent/src/deps/try_signal/test.cpp Normal file
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#include <stdexcept>
#include <array>
#include <cstring> // for memcpy
#include "try_signal.hpp"
int main()
{
char const buf[] = "test...test";
char dest[sizeof(buf)];
{
sig::try_signal([&]{
std::memcpy(dest, buf, sizeof(buf));
});
if (!std::equal(buf, buf + sizeof(buf), dest)) {
fprintf(stderr, "ERROR: buffer not copied correctly\n");
return 1;
}
}
try {
void* invalid_pointer = nullptr;
sig::try_signal([&]{
std::memcpy(dest, buf, sizeof(buf));
std::memcpy(dest, invalid_pointer, sizeof(buf));
});
}
catch (std::system_error const& e)
{
if (e.code() != std::error_condition(sig::errors::segmentation)) {
fprintf(stderr, "ERROR: expected segmentaiton violation error\n");
}
else {
fprintf(stderr, "OK\n");
}
fprintf(stderr, "exited with expected system_error exception: %s\n", e.what());
// we expect this to happen, so return 0
return e.code() == std::error_condition(sig::errors::segmentation) ? 0 : 1;
}
// return non-zero here because we don't expect this
fprintf(stderr, "ERROR: expected exit through exception\n");
return 1;
}

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rblibtorrent/src/deps/try_signal/try_signal.cpp Normal file
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/*
Copyright (c) 2016, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <cassert>
#include <system_error>
#include <atomic>
#include <csetjmp>
#include <csignal>
#include "try_signal.hpp"
#if !defined _WIN32
// linux
namespace sig {
namespace detail {
namespace {
thread_local sigjmp_buf* jmpbuf = nullptr;
}
std::atomic_flag once = ATOMIC_FLAG_INIT;
scoped_jmpbuf::scoped_jmpbuf(sigjmp_buf* ptr)
{
_previous_ptr = jmpbuf;
jmpbuf = ptr;
std::atomic_signal_fence(std::memory_order_release);
}
scoped_jmpbuf::~scoped_jmpbuf() { jmpbuf = _previous_ptr; }
void handler(int const signo, siginfo_t*, void*)
{
std::atomic_signal_fence(std::memory_order_acquire);
if (jmpbuf)
siglongjmp(*jmpbuf, signo);
// this signal was not caused within the scope of a try_signal object,
// invoke the default handler
signal(signo, SIG_DFL);
raise(signo);
}
void setup_handler()
{
struct sigaction sa;
sa.sa_sigaction = &sig::detail::handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_SIGINFO;
sigaction(SIGSEGV, &sa, nullptr);
sigaction(SIGBUS, &sa, nullptr);
}
} // detail namespace
} // sig namespace
#elif __GNUC__
// mingw
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
namespace sig {
namespace detail {
thread_local jmp_buf* jmpbuf = nullptr;
long CALLBACK handler(EXCEPTION_POINTERS* pointers)
{
std::atomic_signal_fence(std::memory_order_acquire);
if (jmpbuf)
longjmp(*jmpbuf, pointers->ExceptionRecord->ExceptionCode);
return EXCEPTION_CONTINUE_SEARCH;
}
scoped_handler::scoped_handler(jmp_buf* ptr)
{
_previous_ptr = jmpbuf;
jmpbuf = ptr;
std::atomic_signal_fence(std::memory_order_release);
_handle = AddVectoredExceptionHandler(1, sig::detail::handler);
}
scoped_handler::~scoped_handler()
{
RemoveVectoredExceptionHandler(_handle);
jmpbuf = _previous_ptr;
}
} // detail namespace
} // sig namespace
#else
// windows
#include <winnt.h> // for EXCEPTION_*
namespace sig {
namespace detail {
// these are the kinds of SEH exceptions we'll translate into C++ exceptions
bool catch_error(int const code)
{
return code == EXCEPTION_IN_PAGE_ERROR
|| code == EXCEPTION_ACCESS_VIOLATION
|| code == EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
}
} // detail namespace
} // namespace sig
#endif // _WIN32

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/*
Copyright (c) 2017, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TRY_SIGNAL_HPP_INCLUDED
#define TRY_SIGNAL_HPP_INCLUDED
#if !defined _WIN32
// linux
#include "try_signal_posix.hpp"
#elif __GNUC__
// mingw
#include "try_signal_mingw.hpp"
#else
// windows
#include "try_signal_msvc.hpp"
#endif
#endif // TRY_SIGNAL_HPP_INCLUDED

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/*
Copyright (c) 2017, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TRY_SIGNAL_MINGW_HPP_INCLUDED
#define TRY_SIGNAL_MINGW_HPP_INCLUDED
#include "signal_error_code.hpp"
#include <setjmp.h> // for jmp_buf
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
namespace sig {
namespace detail {
struct scoped_handler
{
scoped_handler(jmp_buf* ptr);
~scoped_handler();
scoped_handler(scoped_handler const&) = delete;
scoped_handler& operator=(scoped_handler const&) = delete;
private:
void* _handle;
jmp_buf* _previous_ptr;
};
} // detail namespace
template <typename Fun>
void try_signal(Fun&& f)
{
jmp_buf buf;
int const code = setjmp(buf);
// set the thread local jmpbuf pointer, and make sure it's cleared when we
// leave the scope
sig::detail::scoped_handler scope(&buf);
if (code != 0)
throw std::system_error(std::error_code(code, seh_category()));
f();
}
} // sig namespace
#endif

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/*
Copyright (c) 2017, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TRY_SIGNAL_MSVC_HPP_INCLUDED
#define TRY_SIGNAL_MSVC_HPP_INCLUDED
#include "signal_error_code.hpp"
namespace sig {
namespace detail {
bool catch_error(int const code);
} // detail namespace
template <typename Fun>
void try_signal(Fun&& f)
{
__try
{
f();
}
__except (detail::catch_error(GetExceptionCode()))
{
throw std::system_error(std::error_code(GetExceptionCode(), seh_category()));
}
}
} // sig namespace
#endif

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/*
Copyright (c) 2017, Arvid Norberg
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TRY_SIGNAL_POSIX_HPP_INCLUDED
#define TRY_SIGNAL_POSIX_HPP_INCLUDED
#include "signal_error_code.hpp"
#include <setjmp.h> // for sigjmp_buf
#include <atomic>
namespace sig {
namespace detail {
extern std::atomic_flag once;
struct scoped_jmpbuf
{
explicit scoped_jmpbuf(sigjmp_buf* ptr);
~scoped_jmpbuf();
scoped_jmpbuf(scoped_jmpbuf const&) = delete;
scoped_jmpbuf& operator=(scoped_jmpbuf const&) = delete;
private:
sigjmp_buf* _previous_ptr;
};
void handler(int const signo, siginfo_t* si, void*);
void setup_handler();
} // detail namespace
template <typename Fun>
void try_signal(Fun&& f)
{
if (sig::detail::once.test_and_set() == false) {
sig::detail::setup_handler();
}
sigjmp_buf buf;
int const sig = sigsetjmp(buf, 1);
// set the thread local jmpbuf pointer, and make sure it's cleared when we
// leave the scope
sig::detail::scoped_jmpbuf scope(&buf);
if (sig != 0)
throw std::system_error(static_cast<sig::errors::error_code_enum>(sig));
f();
}
}
#endif