1 files changed, 168 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Process/POSIX/ProcessMessage.h b/lldb/source/Plugins/Process/POSIX/ProcessMessage.h
new file mode 100644
index 0000000000000..d9c10caaa95e9
--- /dev/null
+++ b/lldb/source/Plugins/Process/POSIX/ProcessMessage.h
@@ -0,0 +1,168 @@
+//===-- 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_