c49460bae7
Summary: This enables primarily `stop.cpp` and `descriptor.cpp`. Requires a little bit of wrangling to get it to compile. Unlike the CUDA build, this build uses an in-tree libc++ configured for the GPU. This is configured without thread support, environment, or filesystem, and it is not POSIX at all. So, no mutexes, pthreads, or get/setenv. I tested stop, but i don't know if it's actually legal to exit from OpenMP offloading.
144 lines
3.7 KiB
C++
144 lines
3.7 KiB
C++
//===-- lib/runtime/terminator.cpp ------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "flang-rt/runtime/terminator.h"
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#include <cstdio>
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#include <cstdlib>
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namespace Fortran::runtime {
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#if !defined(RT_DEVICE_COMPILATION)
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[[maybe_unused]] static void (*crashHandler)(
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const char *, int, const char *, va_list &){nullptr};
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void Terminator::RegisterCrashHandler(
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void (*handler)(const char *, int, const char *, va_list &)) {
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crashHandler = handler;
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}
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void Terminator::InvokeCrashHandler(const char *message, ...) const {
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if (crashHandler) {
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va_list ap;
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va_start(ap, message);
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crashHandler(sourceFileName_, sourceLine_, message, ap);
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va_end(ap);
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}
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}
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[[noreturn]] void Terminator::CrashArgs(
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const char *message, va_list &ap) const {
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CrashHeader();
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std::vfprintf(stderr, message, ap);
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va_end(ap);
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CrashFooter();
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}
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#endif
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RT_OFFLOAD_API_GROUP_BEGIN
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RT_API_ATTRS void Terminator::CrashHeader() const {
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#if defined(RT_DEVICE_COMPILATION)
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std::printf("\nfatal Fortran runtime error");
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if (sourceFileName_) {
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std::printf("(%s", sourceFileName_);
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if (sourceLine_) {
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std::printf(":%d", sourceLine_);
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}
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std::printf(")");
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}
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std::printf(": ");
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#else
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std::fputs("\nfatal Fortran runtime error", stderr);
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if (sourceFileName_) {
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std::fprintf(stderr, "(%s", sourceFileName_);
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if (sourceLine_) {
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std::fprintf(stderr, ":%d", sourceLine_);
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}
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fputc(')', stderr);
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}
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std::fputs(": ", stderr);
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#endif
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}
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[[noreturn]] RT_API_ATTRS void Terminator::CrashFooter() const {
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#if defined(RT_DEVICE_COMPILATION)
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std::printf("\n");
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#else
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fputc('\n', stderr);
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// TODO: This should flush the buffers through the RPC interface.
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#if !RT_GPU_TARGET
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// FIXME: re-enable the flush along with the IO enabling.
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io::FlushOutputOnCrash(*this);
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#endif
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#endif
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NotifyOtherImagesOfErrorTermination(EXIT_FAILURE);
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#if defined(RT_DEVICE_COMPILATION)
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DeviceTrap();
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#else
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std::abort();
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#endif
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}
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[[noreturn]] RT_API_ATTRS void Terminator::CheckFailed(
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const char *predicate, const char *file, int line) const {
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Crash("Internal error: RUNTIME_CHECK(%s) failed at %s(%d)", predicate, file,
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line);
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}
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[[noreturn]] RT_API_ATTRS void Terminator::CheckFailed(
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const char *predicate) const {
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Crash("Internal error: RUNTIME_CHECK(%s) failed at %s(%d)", predicate,
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sourceFileName_, sourceLine_);
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}
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static RT_VAR_ATTRS void (*normalEndCallback)(int) = nullptr;
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static RT_VAR_ATTRS void (*failImageCallback)(void) = nullptr;
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static RT_VAR_ATTRS void (*errorCallback)(int) = nullptr;
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void SetNormalEndCallback(void (*callback)(int)) {
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normalEndCallback = callback;
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}
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void SetFailImageCallback(void (*callback)(void)) {
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failImageCallback = callback;
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}
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void SetErrorCallback(void (*callback)(int)) { errorCallback = callback; }
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[[noreturn]]
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void NormalExit(int exitCode) {
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SynchronizeImagesOfNormalEnd(exitCode); // might never return
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std::exit(exitCode);
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}
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[[noreturn]]
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void ErrorExit(int exitCode) {
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NotifyOtherImagesOfErrorTermination(exitCode); // might never return
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std::exit(exitCode);
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}
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RT_API_ATTRS void SynchronizeImagesOfNormalEnd(int code) {
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if (normalEndCallback)
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(*normalEndCallback)(code);
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}
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RT_API_ATTRS void NotifyOtherImagesOfFailImageStatement() {
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if (failImageCallback)
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(*failImageCallback)();
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}
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RT_API_ATTRS void NotifyOtherImagesOfErrorTermination(int code) {
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if (errorCallback)
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(*errorCallback)(code);
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}
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RT_OFFLOAD_API_GROUP_END
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} // namespace Fortran::runtime
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