Merge pull request #23 from gtarcoder/master

Added dump&&load interface for trivially_copyable types

examples/dump_load.cc

@@ -0,0 +1,58 @@
+#include <iostream>
+#include <string>
+#include <parallel_hashmap/phmap_dump.h>
+
+using phmap::flat_hash_map;
+using phmap::parallel_flat_hash_map;
+
+void dump_load_uint64_uint32() {
+    flat_hash_map<uint64_t, uint32_t> mp1;
+    phmap::BinaryOutputArchive ar_out("./dump.data");
+    // Add a new entry
+    mp1[100] = 99;
+    mp1[300] = 299;
+
+    // Iterate and print keys and values 
+    for (const auto& n : mp1)
+        std::cout << n.first << "'s value is: " << n.second << "\n";
+ 
+    mp1.dump(ar_out);
+    flat_hash_map<uint64_t, uint32_t> mp2;
+    phmap::BinaryInputArchive ar_in("./dump.data");
+    mp2.load(ar_in);
+    // Iterate and print keys and values g|++
+    for (const auto& n : mp2)
+        std::cout << n.first << "'s value is: " << n.second << "\n";
+}
+
+void dump_load_parallel_flat_hash_map() {
+    parallel_flat_hash_map<uint64_t, uint32_t> mp1;
+    phmap::BinaryOutputArchive ar_out("./dump.data");
+
+    // Add a new entry
+    mp1[100] = 99;
+    mp1[300] = 299;
+    mp1[101] = 992;
+    mp1[1300] = 2991;
+    mp1[1130] = 299;
+    mp1[2130] = 1299;
+    // Iterate and print
+    for (const auto& n : mp1)
+        std::cout << "key: " << n.first << ", value: " << n.second << "\n";
+ 
+    mp1.dump(ar_out);
+    parallel_flat_hash_map<uint64_t, uint32_t> mp2;
+    phmap::BinaryInputArchive ar_in("./dump.data");
+
+    mp2.load(ar_in);
+    for (const auto& n : mp2)
+        std::cout << "key: " << n.first << ", value: " << n.second << "\n";
+}
+
+int main()
+{
+    dump_load_uint64_uint32();
+    dump_load_parallel_flat_hash_map();
+    return 0;
+}
+

examples/serialize.cc

@@ -22,9 +22,9 @@ void showtime(const char *name, std::function<void ()> doit)
     doit();
     auto t2 = std::chrono::high_resolution_clock::now();
     auto elapsed = milliseconds<double>(t2 - t1).count();
-    printf("%s: %.3fms\n", name, (int)elapsed / 1000.0f);
+    printf("%s: %.3fs\n", name, (int)elapsed / 1000.0f);
 }
-    
+
 int main()
 {
     using MapType = phmap::flat_hash_map<bitset<42>, int>;