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packages/leann-backend-hnsw/third_party/faiss/tests/test_util.h

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#ifndef FAISS_TEST_UTIL_H
+#define FAISS_TEST_UTIL_H
+
+#include <faiss/IndexIVFPQ.h>
+#include <unistd.h>
+
+struct Tempfilename {
+    pthread_mutex_t* mutex;
+    std::string filename;
+
+    Tempfilename(pthread_mutex_t* mutex, std::string filename_template) {
+        this->mutex = mutex;
+        this->filename = filename_template;
+        pthread_mutex_lock(mutex);
+        int fd = mkstemp(&this->filename[0]);
+        close(fd);
+        pthread_mutex_unlock(mutex);
+    }
+
+    ~Tempfilename() {
+        if (access(filename.c_str(), F_OK)) {
+            unlink(filename.c_str());
+        }
+    }
+
+    const char* c_str() {
+        return filename.c_str();
+    }
+};
+
+#endif // FAISS_TEST_UTIL_H