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145 lines
5.9 KiB
145 lines
5.9 KiB
//===- lib/Support/ErrorHandling.cpp - Callbacks for errors ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines an API used to indicate fatal error conditions. Non-fatal
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// errors (most of them) should be handled through LLVMContext.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Config/config.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/WindowsError.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cassert>
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#include <cstdlib>
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#if defined(HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#if defined(_MSC_VER)
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# include <io.h>
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# include <fcntl.h>
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#endif
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using namespace llvm_ks;
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void llvm_ks::report_fatal_error(const char *Reason, bool GenCrashDiag) {
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report_fatal_error(Twine(Reason), GenCrashDiag);
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}
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void llvm_ks::report_fatal_error(const std::string &Reason, bool GenCrashDiag) {
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report_fatal_error(Twine(Reason), GenCrashDiag);
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}
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void llvm_ks::report_fatal_error(StringRef Reason, bool GenCrashDiag) {
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report_fatal_error(Twine(Reason), GenCrashDiag);
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}
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void llvm_ks::report_fatal_error(const Twine &Reason, bool GenCrashDiag) {
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// Blast the result out to stderr. We don't try hard to make sure this
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// succeeds (e.g. handling EINTR) and we can't use errs() here because
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// raw ostreams can call report_fatal_error.
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SmallVector<char, 64> Buffer;
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raw_svector_ostream OS(Buffer);
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OS << "LLVM ERROR: " << Reason << "\n";
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StringRef MessageStr = OS.str();
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ssize_t written = ::write(2, MessageStr.data(), MessageStr.size());
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(void)written; // If something went wrong, we deliberately just give up.
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// If we reached here, we are failing ungracefully. Run the interrupt handlers
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// to make sure any special cleanups get done, in particular that we remove
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// files registered with RemoveFileOnSignal.
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//sys::RunInterruptHandlers();
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exit(1);
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}
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void llvm_ks::llvm_unreachable_internal(const char *msg, const char *file,
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unsigned line) {
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// This code intentionally doesn't call the ErrorHandler callback, because
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// llvm_unreachable is intended to be used to indicate "impossible"
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// situations, and not legitimate runtime errors.
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abort();
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#ifdef LLVM_BUILTIN_UNREACHABLE
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// Windows systems and possibly others don't declare abort() to be noreturn,
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// so use the unreachable builtin to avoid a Clang self-host warning.
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LLVM_BUILTIN_UNREACHABLE;
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#endif
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}
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#ifdef LLVM_ON_WIN32
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#include <winerror.h>
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// I'd rather not double the line count of the following.
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#define MAP_ERR_TO_COND(x, y) \
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case x: \
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return make_error_code(errc::y)
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std::error_code llvm_ks::mapWindowsError(unsigned EV) {
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switch (EV) {
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MAP_ERR_TO_COND(ERROR_ACCESS_DENIED, permission_denied);
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MAP_ERR_TO_COND(ERROR_ALREADY_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_BAD_UNIT, no_such_device);
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MAP_ERR_TO_COND(ERROR_BUFFER_OVERFLOW, filename_too_long);
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MAP_ERR_TO_COND(ERROR_BUSY, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_BUSY_DRIVE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_CANNOT_MAKE, permission_denied);
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MAP_ERR_TO_COND(ERROR_CANTOPEN, io_error);
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MAP_ERR_TO_COND(ERROR_CANTREAD, io_error);
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MAP_ERR_TO_COND(ERROR_CANTWRITE, io_error);
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MAP_ERR_TO_COND(ERROR_CURRENT_DIRECTORY, permission_denied);
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MAP_ERR_TO_COND(ERROR_DEV_NOT_EXIST, no_such_device);
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MAP_ERR_TO_COND(ERROR_DEVICE_IN_USE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_DIR_NOT_EMPTY, directory_not_empty);
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MAP_ERR_TO_COND(ERROR_DIRECTORY, invalid_argument);
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MAP_ERR_TO_COND(ERROR_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_FILE_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_FILE_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_HANDLE_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_INVALID_ACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_INVALID_DRIVE, no_such_device);
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MAP_ERR_TO_COND(ERROR_INVALID_FUNCTION, function_not_supported);
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MAP_ERR_TO_COND(ERROR_INVALID_HANDLE, invalid_argument);
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MAP_ERR_TO_COND(ERROR_INVALID_NAME, invalid_argument);
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MAP_ERR_TO_COND(ERROR_LOCK_VIOLATION, no_lock_available);
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MAP_ERR_TO_COND(ERROR_LOCKED, no_lock_available);
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MAP_ERR_TO_COND(ERROR_NEGATIVE_SEEK, invalid_argument);
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MAP_ERR_TO_COND(ERROR_NOACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_NOT_ENOUGH_MEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_NOT_READY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_OPEN_FAILED, io_error);
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MAP_ERR_TO_COND(ERROR_OPEN_FILES, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_OUTOFMEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_PATH_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_BAD_NETPATH, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_READ_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_RETRY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_SEEK, io_error);
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MAP_ERR_TO_COND(ERROR_SHARING_VIOLATION, permission_denied);
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MAP_ERR_TO_COND(ERROR_TOO_MANY_OPEN_FILES, too_many_files_open);
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MAP_ERR_TO_COND(ERROR_WRITE_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_WRITE_PROTECT, permission_denied);
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MAP_ERR_TO_COND(WSAEACCES, permission_denied);
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MAP_ERR_TO_COND(WSAEBADF, bad_file_descriptor);
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MAP_ERR_TO_COND(WSAEFAULT, bad_address);
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MAP_ERR_TO_COND(WSAEINTR, interrupted);
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MAP_ERR_TO_COND(WSAEINVAL, invalid_argument);
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MAP_ERR_TO_COND(WSAEMFILE, too_many_files_open);
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MAP_ERR_TO_COND(WSAENAMETOOLONG, filename_too_long);
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default:
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return std::error_code(EV, std::system_category());
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}
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}
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#endif
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