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//===-- ProcessMessage.h ----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_ProcessMessage_H_
#define liblldb_ProcessMessage_H_
#include "CrashReason.h"
#include <cassert>
#include <string>
#include "lldb/lldb-defines.h"
#include "lldb/lldb-types.h"
class ProcessMessage {
public:
/// The type of signal this message can correspond to.
enum Kind {
eInvalidMessage,
eAttachMessage,
eExitMessage,
eLimboMessage,
eSignalMessage,
eSignalDeliveredMessage,
eTraceMessage,
eBreakpointMessage,
eWatchpointMessage,
eCrashMessage,
eNewThreadMessage,
eExecMessage
};
ProcessMessage()
: m_tid(LLDB_INVALID_PROCESS_ID), m_kind(eInvalidMessage),
m_crash_reason(CrashReason::eInvalidCrashReason), m_status(0),
m_addr(0) {}
Kind GetKind() const { return m_kind; }
lldb::tid_t GetTID() const { return m_tid; }
/// Indicates that the process @p pid has successfully attached.
static ProcessMessage Attach(lldb::pid_t pid) {
return ProcessMessage(pid, eAttachMessage);
}
/// Indicates that the thread @p tid is about to exit with status @p status.
static ProcessMessage Limbo(lldb::tid_t tid, int status) {
return ProcessMessage(tid, eLimboMessage, status);
}
/// Indicates that the thread @p tid had the signal @p signum delivered.
static ProcessMessage Signal(lldb::tid_t tid, int signum) {
return ProcessMessage(tid, eSignalMessage, signum);
}
/// Indicates that a signal @p signum generated by the debugging process was
/// delivered to the thread @p tid.
static ProcessMessage SignalDelivered(lldb::tid_t tid, int signum) {
return ProcessMessage(tid, eSignalDeliveredMessage, signum);
}
/// Indicates that the thread @p tid encountered a trace point.
static ProcessMessage Trace(lldb::tid_t tid) {
return ProcessMessage(tid, eTraceMessage);
}
/// Indicates that the thread @p tid encountered a break point.
static ProcessMessage Break(lldb::tid_t tid) {
return ProcessMessage(tid, eBreakpointMessage);
}
static ProcessMessage Watch(lldb::tid_t tid, lldb::addr_t wp_addr) {
return ProcessMessage(tid, eWatchpointMessage, 0, wp_addr);
}
/// Indicates that the thread @p tid crashed.
static ProcessMessage Crash(lldb::pid_t pid, CrashReason reason, int signo,
lldb::addr_t fault_addr) {
ProcessMessage message(pid, eCrashMessage, signo, fault_addr);
message.m_crash_reason = reason;
return message;
}
/// Indicates that the thread @p child_tid was spawned.
static ProcessMessage NewThread(lldb::tid_t parent_tid,
lldb::tid_t child_tid) {
return ProcessMessage(parent_tid, eNewThreadMessage, child_tid);
}
/// Indicates that the thread @p tid is about to exit with status @p status.
static ProcessMessage Exit(lldb::tid_t tid, int status) {
return ProcessMessage(tid, eExitMessage, status);
}
/// Indicates that the thread @p pid has exec'd.
static ProcessMessage Exec(lldb::tid_t tid) {
return ProcessMessage(tid, eExecMessage);
}
int GetExitStatus() const {
assert(GetKind() == eExitMessage || GetKind() == eLimboMessage);
return m_status;
}
int GetSignal() const {
assert(GetKind() == eSignalMessage || GetKind() == eCrashMessage ||
GetKind() == eSignalDeliveredMessage);
return m_status;
}
int GetStopStatus() const {
assert(GetKind() == eSignalMessage);
return m_status;
}
CrashReason GetCrashReason() const {
assert(GetKind() == eCrashMessage);
return m_crash_reason;
}
lldb::addr_t GetFaultAddress() const {
assert(GetKind() == eCrashMessage);
return m_addr;
}
lldb::addr_t GetHWAddress() const {
assert(GetKind() == eWatchpointMessage || GetKind() == eTraceMessage);
return m_addr;
}
lldb::tid_t GetChildTID() const {
assert(GetKind() == eNewThreadMessage);
return m_child_tid;
}
const char *PrintCrashReason() const;
const char *PrintKind() const;
static const char *PrintKind(Kind);
private:
ProcessMessage(lldb::tid_t tid, Kind kind, int status = 0,
lldb::addr_t addr = 0)
: m_tid(tid), m_kind(kind),
m_crash_reason(CrashReason::eInvalidCrashReason), m_status(status),
m_addr(addr), m_child_tid(0) {}
ProcessMessage(lldb::tid_t tid, Kind kind, lldb::tid_t child_tid)
: m_tid(tid), m_kind(kind),
m_crash_reason(CrashReason::eInvalidCrashReason), m_status(0),
m_addr(0), m_child_tid(child_tid) {}
lldb::tid_t m_tid;
Kind m_kind : 8;
CrashReason m_crash_reason;
int m_status;
lldb::addr_t m_addr;
lldb::tid_t m_child_tid;
};
#endif // #ifndef liblldb_ProcessMessage_H_
|
