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