X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d5b29830df70e823202e384a7655e4371193ecd7..a63a8597fc53411fbb6a812c52f21d4ceede74ee:/src/xbt/exception.cpp diff --git a/src/xbt/exception.cpp b/src/xbt/exception.cpp index 5483ae5370..6d9272f0bc 100644 --- a/src/xbt/exception.cpp +++ b/src/xbt/exception.cpp @@ -1,68 +1,102 @@ -/* Copyright (c) 2005-2016. The SimGrid Team. - * All rights reserved. */ +/* Copyright (c) 2005-2019. The SimGrid Team. All rights reserved. */ /* This program is free software; you can redistribute it and/or modify it * under the terms of the license (GNU LGPL) which comes with this package. */ -#include +#include "simgrid/Exception.hpp" +#include "src/kernel/context/Context.hpp" +#include +#include -#include -#include -#include -#include -#include -#include #include +#include -#include -#include -#include -#include - -extern "C" { XBT_LOG_EXTERNAL_CATEGORY(xbt); XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_exception, xbt, "Exceptions"); + +// DO NOT define ~xbt_ex() in exception.hpp. +// Defining it here ensures that xbt_ex is defined only in libsimgrid, but not in libsimgrid-java. +// Doing otherwise naturally breaks things (at least on freebsd with clang). + +xbt_ex::~xbt_ex() = default; + +void _xbt_throw(char* message, xbt_errcat_t errcat, int value, const char* file, int line, const char* func) +{ + xbt_ex e(simgrid::xbt::ThrowPoint(file, line, func, simgrid::xbt::Backtrace(), xbt_procname(), xbt_getpid()), + message); + xbt_free(message); + e.category = errcat; + e.value = value; + throw e; +} + +/** @brief returns a short name for the given exception category */ +const char* xbt_ex_catname(xbt_errcat_t cat) +{ + switch (cat) { + case unknown_error: + return "unknown error"; + case arg_error: + return "invalid argument"; + case bound_error: + return "out of bounds"; + case mismatch_error: + return "mismatch"; + case not_found_error: + return "not found"; + case system_error: + return "system error"; + case network_error: + return "network error"; + case timeout_error: + return "timeout"; + case cancel_error: + return "action canceled"; + case thread_error: + return "thread error"; + case host_error: + return "host failed"; + case tracing_error: + return "tracing error"; + case io_error: + return "io error"; + case vm_error: + return "vm error"; + default: + return "INVALID ERROR"; + } } namespace simgrid { namespace xbt { -WithContextException::~WithContextException() = default; - -void logException( - e_xbt_log_priority_t prio, - const char* context, std::exception const& exception) +void log_exception(e_xbt_log_priority_t prio, const char* context, std::exception const& exception) { try { auto name = simgrid::xbt::demangle(typeid(exception).name()); - auto with_context = - dynamic_cast(&exception); + auto* with_context = dynamic_cast(&exception); if (with_context != nullptr) - XBT_LOG(prio, "%s %s by %s/%d: %s", - context, name.get(), - with_context->processName().c_str(), with_context->pid(), - exception.what()); + XBT_LOG(prio, "%s %s by %s/%d: %s", context, name.get(), with_context->throw_point().procname_.c_str(), + with_context->throw_point().pid_, exception.what()); else XBT_LOG(prio, "%s %s: %s", context, name.get(), exception.what()); // Do we have a backtrace? - if (with_context != nullptr) { - auto backtrace = simgrid::xbt::resolveBacktrace( - with_context->backtrace().data(), with_context->backtrace().size()); - for (std::string const& s : backtrace) - XBT_LOG(prio, " -> %s", s.c_str()); + if (with_context != nullptr && not simgrid::config::get_value("exception/cutpath")) { + auto backtrace = with_context->resolve_backtrace(); + XBT_LOG(prio, " -> %s", backtrace.c_str()); } // Do we have a nested exception? - auto with_nested = dynamic_cast(&exception); + auto* with_nested = dynamic_cast(&exception); if (with_nested == nullptr || with_nested->nested_ptr() == nullptr) return; try { with_nested->rethrow_nested(); } catch (std::exception& nested_exception) { - logException(prio, "Caused by", nested_exception); + log_exception(prio, "Caused by", nested_exception); } // We could catch nested_exception or WithContextException but we don't bother: catch (...) { @@ -71,15 +105,19 @@ void logException( } catch (...) { // Don't log exceptions we got when trying to log exception + XBT_LOG(prio, "Ignoring exception caught while while trying to log an exception!"); } } -static void showBacktrace(std::vector& bt) +static void show_backtrace(const simgrid::xbt::Backtrace& bt) { - std::vector res = resolveBacktrace(&bt[0], bt.size()); + if (simgrid::config::get_value("exception/cutpath")) { + XBT_LOG(xbt_log_priority_critical, "Display of current backtrace disabled by --cfg=exception/cutpath."); + return; + } + std::string res = bt.resolve(); XBT_LOG(xbt_log_priority_critical, "Current backtrace:"); - for (std::string const& s : res) - XBT_LOG(xbt_log_priority_critical, " -> %s", s.c_str()); + XBT_LOG(xbt_log_priority_critical, " -> %s", res.c_str()); } static std::terminate_handler previous_terminate_handler = nullptr; @@ -96,18 +134,25 @@ static void handler() // Get the current backtrace and exception auto e = std::current_exception(); - auto bt = backtrace(); + simgrid::xbt::Backtrace bt = simgrid::xbt::Backtrace(); try { std::rethrow_exception(e); } // We manage C++ exception ourselves catch (std::exception& e) { - logException(xbt_log_priority_critical, "Uncaught exception", e); - showBacktrace(bt); + log_exception(xbt_log_priority_critical, "Uncaught exception", e); + show_backtrace(bt); std::abort(); } + catch (const simgrid::ForcefulKillException&) { + XBT_ERROR("Received a ForcefulKillException at the top-level exception handler. Maybe a Java->C++ call that is not " + "protected " + "in a try/catch?"); + show_backtrace(bt); + } + // We don't know how to manage other exceptions catch (...) { // If there was another handler let's delegate to it @@ -115,14 +160,13 @@ static void handler() previous_terminate_handler(); else { XBT_ERROR("Unknown uncaught exception"); - showBacktrace(bt); + show_backtrace(bt); std::abort(); } } - } -void installExceptionHandler() +void install_exception_handler() { static std::once_flag handler_flag; std::call_once(handler_flag, [] { @@ -130,5 +174,18 @@ void installExceptionHandler() }); } +} // namespace xbt +} // namespace simgrid + +void xbt_throw_impossible(const char* file, int line, const char* func) +{ + std::stringstream ss; + ss << file << ":" << line << ":" << func << ": The Impossible Did Happen (yet again). Please report this bug."; + throw std::runtime_error(ss.str()); } +void xbt_throw_unimplemented(const char* file, int line, const char* func) +{ + std::stringstream ss; + ss << file << ":" << line << ":" << func << ": Feature unimplemented yet. Please report this bug."; + throw std::runtime_error(ss.str()); }