[Lldb-commits] [lldb] [lldb][AIX] HostInfoAIX Support (PR #117906)

[Dhruv Srivastava via lldb-commits]

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@@ -0,0 +1,213 @@
+//===-- HostInfoAIX.cpp -------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Host/aix/HostInfoAIX.h"
+#include "lldb/Host/Config.h"
+#include "lldb/Host/FileSystem.h"
+#include "lldb/Utility/LLDBLog.h"
+#include "lldb/Utility/Log.h"
+
+#include "llvm/Support/Threading.h"
+
+#include <climits>
+#include <cstdio>
+#include <cstring>
+#include <sys/utsname.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <mutex>
+#include <optional>
+
+using namespace lldb_private;
+
+namespace {
+struct HostInfoAIXFields {
+  llvm::once_flag m_distribution_once_flag;
+  std::string m_distribution_id;
+  llvm::once_flag m_os_version_once_flag;
+  llvm::VersionTuple m_os_version;
+};
+} // namespace
+
+static HostInfoAIXFields *g_fields = nullptr;
+
+void HostInfoAIX::Initialize(SharedLibraryDirectoryHelper *helper) {
+  HostInfoPosix::Initialize(helper);
+
+  g_fields = new HostInfoAIXFields();
+}
+
+void HostInfoAIX::Terminate() {
+  assert(g_fields && "Missing call to Initialize?");
+  delete g_fields;
+  g_fields = nullptr;
+  HostInfoBase::Terminate();
+}
+
+llvm::VersionTuple HostInfoAIX::GetOSVersion() {
+  assert(g_fields && "Missing call to Initialize?");
+  llvm::call_once(g_fields->m_os_version_once_flag, []() {
+    struct utsname un;
+    if (uname(&un) != 0)
+      return;
+
+    llvm::StringRef release = un.release;
+    // The kernel release string can include a lot of stuff (e.g.
+    // 4.9.0-6-amd64). We're only interested in the numbered prefix.
+    release = release.substr(0, release.find_first_not_of("0123456789."));
+    g_fields->m_os_version.tryParse(release);
+  });
+
+  return g_fields->m_os_version;
+}
+
+std::optional<std::string> HostInfoAIX::GetOSBuildString() {
+  struct utsname un;
+  ::memset(&un, 0, sizeof(utsname));
+
+  if (uname(&un) < 0)
+    return std::nullopt;
+
+  return std::string(un.release);
+}
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DhruvSrivastavaX wrote:

Yes, I can work on that. I'll update a template for review soon.

https://github.com/llvm/llvm-project/pull/117906