From 0b57cec536236d46e3dba9bd041533462f33dbb7 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Fri, 20 Dec 2019 19:53:05 +0000
Subject: Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo".  That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.
---
 .../llvm-project/llvm/lib/Support/PluginLoader.cpp | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp

(limited to 'contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp')

diff --git a/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp b/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp
new file mode 100644
index 000000000000..6fe195ffda7a
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Support/PluginLoader.cpp
@@ -0,0 +1,46 @@
+//===-- PluginLoader.cpp - Implement -load command line option ------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the -load <plugin> command line option handler.
+//
+//===----------------------------------------------------------------------===//
+
+#define DONT_GET_PLUGIN_LOADER_OPTION
+#include "llvm/Support/PluginLoader.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/Mutex.h"
+#include "llvm/Support/raw_ostream.h"
+#include <vector>
+using namespace llvm;
+
+static ManagedStatic<std::vector<std::string> > Plugins;
+static ManagedStatic<sys::SmartMutex<true> > PluginsLock;
+
+void PluginLoader::operator=(const std::string &Filename) {
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
+  std::string Error;
+  if (sys::DynamicLibrary::LoadLibraryPermanently(Filename.c_str(), &Error)) {
+    errs() << "Error opening '" << Filename << "': " << Error
+           << "\n  -load request ignored.\n";
+  } else {
+    Plugins->push_back(Filename);
+  }
+}
+
+unsigned PluginLoader::getNumPlugins() {
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
+  return Plugins.isConstructed() ? Plugins->size() : 0;
+}
+
+std::string &PluginLoader::getPlugin(unsigned num) {
+  sys::SmartScopedLock<true> Lock(*PluginsLock);
+  assert(Plugins.isConstructed() && num < Plugins->size() &&
+         "Asking for an out of bounds plugin");
+  return (*Plugins)[num];
+}
-- 
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