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#include <cstdarg>
#include <cstdio>
#include "POSIXPrivate.h"
#include "WAVM/Inline/BasicTypes.h"
#include "WAVM/Platform/Diagnostics.h"
#include "WAVM/Platform/Error.h"
#include "WAVM/Platform/Mutex.h"
#include "WAVM/Runtime/Runtime.h"
using namespace WAVM;
using namespace WAVM::Platform;
static Mutex& getErrorReportingMutex()
{
static Platform::Mutex mutex;
return mutex;
}
void Platform::dumpErrorCallStack(Uptr numOmittedFramesFromTop)
{
std::fprintf(stderr, "Call stack:\n");
CallStack callStack = captureCallStack(numOmittedFramesFromTop);
for(Uptr frameIndex = 0; frameIndex < callStack.frames.size(); ++frameIndex)
{
std::string frameDescription;
Platform::InstructionSource source;
if(!Platform::getInstructionSourceByAddress(callStack.frames[frameIndex].ip, source))
{ frameDescription = "<unknown function>"; }
else
{
frameDescription = asString(source);
}
std::fprintf(stderr, " %s\n", frameDescription.c_str());
}
std::fflush(stderr);
}
void Platform::handleFatalError(const char* messageFormat, bool printCallStack, va_list varArgs)
{
auto toString = [] (const char* format, va_list varArgs) -> std::string {
int length = 0;
{
va_list varArgsCopy;
va_copy(varArgsCopy, varArgs);
length = vsnprintf(nullptr, 0, format, varArgsCopy);
va_end(varArgsCopy);
if (length < 0) {
return "";
}
}
auto result = std::string();
result.resize(length + 1);
vsnprintf(result.data(), result.size(), format, varArgs);
return result;
};
auto result = toString(messageFormat, varArgs);
if (printCallStack) {
result.back() = '\n';
auto callStack = WAVM::Platform::captureCallStack(1);
auto description = WAVM::Runtime::describeCallStack(callStack);
int i = 0;
for (auto& item : description) {
result += std::to_string(i++) + ". ";
result += item;
result += '\n';
}
}
throw std::runtime_error(result.c_str());
}
void Platform::handleAssertionFailure(const AssertMetadata& metadata)
{
Platform::Mutex::Lock lock(getErrorReportingMutex());
std::fprintf(stderr,
"Assertion failed at %s(%u): %s\n",
metadata.file,
metadata.line,
metadata.condition);
dumpErrorCallStack(2);
std::fflush(stderr);
}
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