1 files changed, 60 insertions, 0 deletions
diff --git a/Source/cmFileLock.cxx b/Source/cmFileLock.cxx
new file mode 100644
index 0000000..786d6c6
--- /dev/null
+++ b/Source/cmFileLock.cxx
@@ -0,0 +1,60 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmFileLock.h"
+
+#include "cmFileLockResult.h"
+#include <assert.h>
+
+// Common implementation
+
+cmFileLock::~cmFileLock()
+{
+  if (!this->Filename.empty()) {
+    const cmFileLockResult result = this->Release();
+    static_cast<void>(result);
+    assert(result.IsOk());
+  }
+}
+
+cmFileLockResult cmFileLock::Lock(const std::string& filename,
+                                  unsigned long timeout)
+{
+  if (filename.empty()) {
+    // Error is internal since all the directories and file must be created
+    // before actual lock called.
+    return cmFileLockResult::MakeInternal();
+  }
+
+  if (!this->Filename.empty()) {
+    // Error is internal since double-lock must be checked in class
+    // cmFileLockPool by the cmFileLock::IsLocked method.
+    return cmFileLockResult::MakeInternal();
+  }
+
+  this->Filename = filename;
+  cmFileLockResult result = this->OpenFile();
+  if (result.IsOk()) {
+    if (timeout == static_cast<unsigned long>(-1)) {
+      result = this->LockWithoutTimeout();
+    } else {
+      result = this->LockWithTimeout(timeout);
+    }
+  }
+
+  if (!result.IsOk()) {
+    this->Filename = "";
+  }
+
+  return result;
+}
+
+bool cmFileLock::IsLocked(const std::string& filename) const
+{
+  return filename == this->Filename;
+}
+
+#if defined(_WIN32)
+#include "cmFileLockWin32.cxx"
+#else
+#include "cmFileLockUnix.cxx"
+#endif