foundationdb/flow/Error.cpp

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/*
* Error.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
*
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* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
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* http://www.apache.org/licenses/LICENSE-2.0
*
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "flow/Error.h"
#include "flow/Trace.h"
#include "flow/Knobs.h"
#include "flow/UnitTest.h"
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#include <iostream>
using std::cout;
using std::endl;
using std::make_pair;
bool g_crashOnError = false;
#include <iostream>
Error Error::fromUnvalidatedCode(int code) {
if (code < 0 || code > 30000) {
Error e = Error::fromCode(error_code_unknown_error);
TraceEvent(SevWarn, "ConvertedUnvalidatedErrorCode").error(e).detail("OriginalCode", code);
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return e;
}
else
return Error::fromCode(code);
}
Error internal_error_impl( const char* file, int line ) {
fprintf(stderr, "Internal Error @ %s %d:\n %s\n", file, line, platform::get_backtrace().c_str());
TraceEvent(SevError, "InternalError")
.error(Error::fromCode(error_code_internal_error))
.detail("File", file)
.detail("Line", line)
.backtrace();
flushTraceFileVoid();
return Error(error_code_internal_error);
}
Error internal_error_impl(const char* msg, const char* file, int line) {
fprintf(stderr, "Assertion %s failed @ %s %d:\n %s\n", msg, file, line, platform::get_backtrace().c_str());
TraceEvent(SevError, "InternalError")
.error(Error::fromCode(error_code_internal_error))
.detail("FailedAssertion", msg)
.detail("File", file)
.detail("Line", line)
.backtrace();
flushTraceFileVoid();
return Error(error_code_internal_error);
}
Error internal_error_impl(const char* a_nm, long long a, const char * op_nm, const char * b_nm, long long b, const char * file, int line) {
fprintf(stderr, "Assertion failed @ %s %d:\n", file, line);
fprintf(stderr, " expression:\n");
fprintf(stderr, " %s %s %s\n", a_nm, op_nm, b_nm);
fprintf(stderr, " expands to:\n");
fprintf(stderr, " %lld %s %lld\n\n", a, op_nm, b);
fprintf(stderr, " %s\n", platform::get_backtrace().c_str());
TraceEvent(SevError, "InternalError")
.error(Error::fromCode(error_code_internal_error))
.detailf("FailedAssertion", "%s %s %s", a_nm, op_nm, b_nm)
.detail("LeftValue", a)
.detail("RightValue", b)
.detail("File", file)
.detail("Line", line)
.backtrace();
flushTraceFileVoid();
return Error(error_code_internal_error);
}
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Error::Error(int error_code)
: error_code(error_code), flags(0)
{
if (TRACE_SAMPLE()) TraceEvent(SevSample, "ErrorCreated").detail("ErrorCode", error_code);
//std::cout << "Error: " << error_code << std::endl;
if (error_code >= 3000 && error_code < 6000) {
TraceEvent(SevError, "SystemError").error(*this).backtrace();
if (g_crashOnError) {
flushOutputStreams();
flushTraceFileVoid();
crashAndDie();
}
}
}
ErrorCodeTable& Error::errorCodeTable() {
static ErrorCodeTable table;
return table;
}
const char* Error::name() const {
const auto& table = errorCodeTable();
auto it = table.find(error_code);
if (it == table.end()) return "UNKNOWN_ERROR";
return it->second.first;
}
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const char* Error::what() const {
const auto& table = errorCodeTable();
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auto it = table.find(error_code);
if (it == table.end()) return "UNKNOWN_ERROR";
return it->second.second;
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}
void Error::init() {
errorCodeTable();
}
Error Error::asInjectedFault() const {
Error e = *this;
e.flags |= FLAG_INJECTED_FAULT;
return e;
}
ErrorCodeTable::ErrorCodeTable() {
#define ERROR(name, number, description) addCode(number, #name, description); enum { Duplicate_Error_Code_##number = 0 };
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#include "error_definitions.h"
}
void ErrorCodeTable::addCode(int code, const char *name, const char *description) {
(*this)[code] = std::make_pair(name, description);
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}
bool isAssertDisabled(int line) {
return FLOW_KNOBS && (FLOW_KNOBS->DISABLE_ASSERTS == -1 || FLOW_KNOBS->DISABLE_ASSERTS == line);
}
void breakpoint_me() {
return;
}
TEST_CASE("/flow/AssertTest") {
// this is mostly checking bug for bug compatibility with the C integer / sign promotion rules.
ASSERT_LT(-1, 0);
ASSERT_EQ(0, 0u);
ASSERT_GT(1, -1);
ASSERT_EQ((int32_t)0xFFFFFFFF, (int32_t)-1);
// ASSERT_LT(-1, 0u); // fails: -1 is promoted to unsigned value in comparison.
// ASSERT(-1 < 0u); // also fails
int sz = 42;
size_t ln = 43;
ASSERT(sz < ln);
ASSERT_EQ(0xFFFFFFFF, (int32_t)-1);
return Void();
}