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Added stack traces and better error reporting in C++

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When an error is reported or an assertion fails in C++, a line is now
printed with information about where the error occured, and a stack trace
is printed.

The stacktrace isn't implemented in the HAL because it's not
hardware-dependent, so StackTrace.hpp and StackTrace.cpp are gone.

The Eclipse project template is modified to include "-export-dynamic" in
the linker options, which is necessary for stack traces.

Change-Id: Ie86c14185b13ed603d0fe6467e87ba4f731b1913
This commit is contained in:
Thomas Clark
2014-07-28 16:25:37 -04:00
parent 338120c3a5
commit 89fe909ae6
9 changed files with 162 additions and 156 deletions
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45
wpilibc/wpilibC++/lib/Error.cpp
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@@ -6,14 +6,15 @@
#include "Error.h"
#include "HAL/cpp/StackTrace.hpp"
#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstring>
#include <cstdlib>
//#include "NetworkCommunication/FRCComm.h"
#include "Timer.h"
#include "Utility.h"
bool Error::m_stackTraceEnabled = false;
bool Error::m_suspendOnErrorEnabled = false;
Error::Error()
@@ -75,39 +76,18 @@ void Error::Set(Code code, const char* contextMessage, const char* filename, con
void Error::Report()
{
// Error string buffers
char *error = new char[256];
char *error_with_code = new char[256];
std::stringstream errorStream;
// Build error strings
if (m_code != -1)
{
snprintf(error, 256, "%s: status = %d (0x%08X) %s ...in %s() in %s at line %d\n",
m_code < 0 ? "ERROR" : "WARNING", (int32_t)m_code, (uint32_t)m_code, m_message.c_str(),
m_function.c_str(), m_filename.c_str(), m_lineNumber);
sprintf(error_with_code,"<Code>%d %s", (int32_t)m_code, error);
} else {
snprintf(error, 256, "ERROR: %s ...in %s() in %s at line %d\n", m_message.c_str(),
m_function.c_str(), m_filename.c_str(), m_lineNumber);
strcpy(error_with_code, error);
}
// TODO: Add logging to disk
errorStream << "Error on line " << m_lineNumber << " ";
errorStream << "of "<< basename(m_filename.c_str()) << ": ";
errorStream << m_message << std::endl;
errorStream << GetStackTrace(4);
// Send to the DriverStation
HALSetErrorData(error_with_code, strlen(error_with_code), 100);
std::string error = errorStream.str();
delete [] error_with_code;
// Print to console
printf("\n\n>>>>%s", error);
delete [] error;
if (m_stackTraceEnabled)
{
printf("-----------<Stack Trace>----------------\n");
printCurrentStackTrace();
}
// Print the error and send it to the DriverStation
std::cout << error << std::endl;
HALSetErrorData(error.c_str(), error.size(), 100);
}
void Error::Clear()
@@ -120,4 +100,3 @@ void Error::Clear()
m_originatingObject = NULL;
m_timestamp = 0.0;
}