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//===-- MessageObjects.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "MessageObjects.h"
#include "lldb/Utility/StructuredData.h"
#include "llvm/ADT/StringExtras.h"
#include "gtest/gtest.h"
using namespace lldb_private;
using namespace llvm;
using namespace llvm::support;
namespace llgs_tests {
Expected<ProcessInfo> ProcessInfo::Create(StringRef response) {
ProcessInfo process_info;
auto elements_or_error = SplitUniquePairList("ProcessInfo", response);
if (!elements_or_error)
return elements_or_error.takeError();
auto &elements = *elements_or_error;
if (elements["pid"].getAsInteger(16, process_info.m_pid))
return make_parsing_error("ProcessInfo: pid");
if (elements["parent-pid"].getAsInteger(16, process_info.m_parent_pid))
return make_parsing_error("ProcessInfo: parent-pid");
if (elements["real-uid"].getAsInteger(16, process_info.m_real_uid))
return make_parsing_error("ProcessInfo: real-uid");
if (elements["real-gid"].getAsInteger(16, process_info.m_real_gid))
return make_parsing_error("ProcessInfo: real-uid");
if (elements["effective-uid"].getAsInteger(16, process_info.m_effective_uid))
return make_parsing_error("ProcessInfo: effective-uid");
if (elements["effective-gid"].getAsInteger(16, process_info.m_effective_gid))
return make_parsing_error("ProcessInfo: effective-gid");
if (elements["ptrsize"].getAsInteger(10, process_info.m_ptrsize))
return make_parsing_error("ProcessInfo: ptrsize");
process_info.m_triple = fromHex(elements["triple"]);
StringRef endian_str = elements["endian"];
if (endian_str == "little")
process_info.m_endian = support::little;
else if (endian_str == "big")
process_info.m_endian = support::big;
else
return make_parsing_error("ProcessInfo: endian");
return process_info;
}
lldb::pid_t ProcessInfo::GetPid() const { return m_pid; }
endianness ProcessInfo::GetEndian() const { return m_endian; }
//====== ThreadInfo ============================================================
ThreadInfo::ThreadInfo(StringRef name, StringRef reason,
const RegisterMap ®isters, unsigned int signal)
: m_name(name.str()), m_reason(reason.str()), m_registers(registers),
m_signal(signal) {}
StringRef ThreadInfo::ReadRegister(unsigned int register_id) const {
return m_registers.lookup(register_id);
}
bool ThreadInfo::ReadRegisterAsUint64(unsigned int register_id,
uint64_t &value) const {
std::string value_str(m_registers.lookup(register_id));
if (!llvm::to_integer(value_str, value, 16)) {
GTEST_LOG_(ERROR)
<< formatv("ThreadInfo: Unable to parse register value at {0}.",
register_id)
.str();
return false;
}
sys::swapByteOrder(value);
return true;
}
//====== JThreadsInfo ==========================================================
Expected<JThreadsInfo> JThreadsInfo::Create(StringRef response,
endianness endian) {
JThreadsInfo jthreads_info;
StructuredData::ObjectSP json = StructuredData::ParseJSON(response);
StructuredData::Array *array = json->GetAsArray();
if (!array)
return make_parsing_error("JThreadsInfo: JSON array");
for (size_t i = 0; i < array->GetSize(); i++) {
StructuredData::Dictionary *thread_info;
array->GetItemAtIndexAsDictionary(i, thread_info);
if (!thread_info)
return make_parsing_error("JThreadsInfo: JSON obj at {0}", i);
StringRef name, reason;
thread_info->GetValueForKeyAsString("name", name);
thread_info->GetValueForKeyAsString("reason", reason);
uint64_t signal;
thread_info->GetValueForKeyAsInteger("signal", signal);
uint64_t tid;
thread_info->GetValueForKeyAsInteger("tid", tid);
StructuredData::Dictionary *register_dict;
thread_info->GetValueForKeyAsDictionary("registers", register_dict);
if (!register_dict)
return make_parsing_error("JThreadsInfo: registers JSON obj");
RegisterMap registers;
auto keys_obj = register_dict->GetKeys();
auto keys = keys_obj->GetAsArray();
for (size_t i = 0; i < keys->GetSize(); i++) {
StringRef key_str, value_str;
keys->GetItemAtIndexAsString(i, key_str);
register_dict->GetValueForKeyAsString(key_str, value_str);
unsigned int register_id;
if (key_str.getAsInteger(10, register_id))
return make_parsing_error("JThreadsInfo: register key[{0}]", i);
registers[register_id] = value_str.str();
}
jthreads_info.m_thread_infos[tid] =
ThreadInfo(name, reason, registers, signal);
}
return jthreads_info;
}
const ThreadInfoMap &JThreadsInfo::GetThreadInfos() const {
return m_thread_infos;
}
//====== StopReply =============================================================
const U64Map &StopReply::GetThreadPcs() const { return m_thread_pcs; }
Expected<StopReply> StopReply::Create(StringRef response,
llvm::support::endianness endian) {
if (response.size() < 3 || !response.consume_front("T"))
return make_parsing_error("StopReply: Invalid packet");
StopReply stop_reply;
StringRef signal = response.take_front(2);
response = response.drop_front(2);
if (!llvm::to_integer(signal, stop_reply.m_signal, 16))
return make_parsing_error("StopReply: stop signal");
auto elements = SplitPairList(response);
for (StringRef field :
{"name", "reason", "thread", "threads", "thread-pcs"}) {
// This will insert an empty field if there is none. In the future, we
// should probably differentiate between these fields not being present and
// them being empty, but right now no tests depends on this.
if (elements.insert({field, {""}}).first->second.size() != 1)
return make_parsing_error(
"StopReply: got multiple responses for the {0} field", field);
}
stop_reply.m_name = elements["name"][0];
stop_reply.m_reason = elements["reason"][0];
if (!llvm::to_integer(elements["thread"][0], stop_reply.m_thread, 16))
return make_parsing_error("StopReply: thread");
SmallVector<StringRef, 20> threads;
SmallVector<StringRef, 20> pcs;
elements["threads"][0].split(threads, ',');
elements["thread-pcs"][0].split(pcs, ',');
if (threads.size() != pcs.size())
return make_parsing_error("StopReply: thread/PC count mismatch");
for (size_t i = 0; i < threads.size(); i++) {
lldb::tid_t thread_id;
uint64_t pc;
if (threads[i].getAsInteger(16, thread_id))
return make_parsing_error("StopReply: thread ID at [{0}].", i);
if (pcs[i].getAsInteger(16, pc))
return make_parsing_error("StopReply: thread PC at [{0}].", i);
stop_reply.m_thread_pcs[thread_id] = pc;
}
for (auto i = elements.begin(); i != elements.end(); i++) {
StringRef key = i->getKey();
const auto &val = i->getValue();
if (key.size() == 2) {
unsigned int reg;
if (key.getAsInteger(16, reg))
continue;
if (val.size() != 1)
return make_parsing_error(
"StopReply: multiple entries for register field [{0:x}]", reg);
stop_reply.m_registers[reg] = val[0].str();
}
}
return stop_reply;
}
//====== Globals ===============================================================
Expected<StringMap<StringRef>> SplitUniquePairList(StringRef caller,
StringRef str) {
SmallVector<StringRef, 20> elements;
str.split(elements, ';');
StringMap<StringRef> pairs;
for (StringRef s : elements) {
std::pair<StringRef, StringRef> pair = s.split(':');
if (pairs.count(pair.first))
return make_parsing_error("{0}: Duplicate Key: {1}", caller, pair.first);
pairs.insert(pair);
}
return pairs;
}
StringMap<SmallVector<StringRef, 2>> SplitPairList(StringRef str) {
SmallVector<StringRef, 20> elements;
str.split(elements, ';');
StringMap<SmallVector<StringRef, 2>> pairs;
for (StringRef s : elements) {
std::pair<StringRef, StringRef> pair = s.split(':');
pairs[pair.first].push_back(pair.second);
}
return pairs;
}
} // namespace llgs_tests
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