Expose process instance info via SB API

Summary:
Implement SBProcessInfo to wrap lldb_private::ProcessInstanceInfo,
and add SBProcess::GetProcessInfo() to retrieve info like parent ID,
group ID, user ID etc. from a live process.

Differential Revision: https://reviews.llvm.org/D35881

llvm-svn: 309664

lldb/source/API/SBProcessInfo.cpp

@@ -0,0 +1,145 @@
+//===-- SBProcessInfo.cpp ---------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/API/SBProcessInfo.h"
+
+#include "lldb/API/SBFileSpec.h"
+#include "lldb/Target/Process.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+SBProcessInfo::SBProcessInfo() : m_opaque_ap() {}
+
+SBProcessInfo::SBProcessInfo(const SBProcessInfo &rhs) : m_opaque_ap() {
+  if (rhs.IsValid()) {
+    ref() = *rhs.m_opaque_ap;
+  }
+}
+
+SBProcessInfo::~SBProcessInfo() {}
+
+SBProcessInfo &SBProcessInfo::operator=(const SBProcessInfo &rhs) {
+  if (this != &rhs) {
+    if (rhs.IsValid())
+      ref() = *rhs.m_opaque_ap;
+    else
+      m_opaque_ap.reset();
+  }
+  return *this;
+}
+
+ProcessInstanceInfo &SBProcessInfo::ref() {
+  if (m_opaque_ap.get() == nullptr) {
+    m_opaque_ap.reset(new ProcessInstanceInfo());
+  }
+  return *m_opaque_ap;
+}
+
+void SBProcessInfo::SetProcessInfo(const ProcessInstanceInfo &proc_info_ref) {
+  ref() = proc_info_ref;
+}
+
+bool SBProcessInfo::IsValid() const { return m_opaque_ap.get() != nullptr; }
+
+const char *SBProcessInfo::GetName() {
+  const char *name = nullptr;
+  if (m_opaque_ap) {
+    name = m_opaque_ap->GetName();
+  }
+  return name;
+}
+
+SBFileSpec SBProcessInfo::GetExecutableFile() {
+  SBFileSpec file_spec;
+  if (m_opaque_ap) {
+    file_spec.SetFileSpec(m_opaque_ap->GetExecutableFile());
+  }
+  return file_spec;
+}
+
+lldb::pid_t SBProcessInfo::GetProcessID() {
+  lldb::pid_t proc_id = LLDB_INVALID_PROCESS_ID;
+  if (m_opaque_ap) {
+    proc_id = m_opaque_ap->GetProcessID();
+  }
+  return proc_id;
+}
+
+uint32_t SBProcessInfo::GetUserID() {
+  uint32_t user_id = UINT32_MAX;
+  if (m_opaque_ap) {
+    user_id = m_opaque_ap->GetUserID();
+  }
+  return user_id;
+}
+
+uint32_t SBProcessInfo::GetGroupID() {
+  uint32_t group_id = UINT32_MAX;
+  if (m_opaque_ap) {
+    group_id = m_opaque_ap->GetGroupID();
+  }
+  return group_id;
+}
+
+bool SBProcessInfo::UserIDIsValid() {
+  bool is_valid = false;
+  if (m_opaque_ap) {
+    is_valid = m_opaque_ap->UserIDIsValid();
+  }
+  return is_valid;
+}
+
+bool SBProcessInfo::GroupIDIsValid() {
+  bool is_valid = false;
+  if (m_opaque_ap) {
+    is_valid = m_opaque_ap->GroupIDIsValid();
+  }
+  return is_valid;
+}
+
+uint32_t SBProcessInfo::GetEffectiveUserID() {
+  uint32_t user_id = UINT32_MAX;
+  if (m_opaque_ap) {
+    user_id = m_opaque_ap->GetEffectiveUserID();
+  }
+  return user_id;
+}
+
+uint32_t SBProcessInfo::GetEffectiveGroupID() {
+  uint32_t group_id = UINT32_MAX;
+  if (m_opaque_ap) {
+    group_id = m_opaque_ap->GetEffectiveGroupID();
+  }
+  return group_id;
+}
+
+bool SBProcessInfo::EffectiveUserIDIsValid() {
+  bool is_valid = false;
+  if (m_opaque_ap) {
+    is_valid = m_opaque_ap->EffectiveUserIDIsValid();
+  }
+  return is_valid;
+}
+
+bool SBProcessInfo::EffectiveGroupIDIsValid() {
+  bool is_valid = false;
+  if (m_opaque_ap) {
+    is_valid = m_opaque_ap->EffectiveGroupIDIsValid();
+  }
+  return is_valid;
+}
+
+lldb::pid_t SBProcessInfo::GetParentProcessID() {
+  lldb::pid_t proc_id = LLDB_INVALID_PROCESS_ID;
+  if (m_opaque_ap) {
+    proc_id = m_opaque_ap->GetParentProcessID();
+  }
+  return proc_id;
+}