phashmap: initial integration (#5542)

* phashmap: initial integration.

* phaspmap: retab.

* fix presubmit.

* Fixup phmap.

projects/phmap/Dockerfile

@@ -0,0 +1,22 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+FROM gcr.io/oss-fuzz-base/base-builder
+RUN git clone https://github.com/greg7mdp/parallel-hashmap
+
+WORKDIR $SRC/parallel-hashmap
+COPY build.sh $SRC/
+COPY phashmap_fuzz.cc $SRC/

projects/phmap/build.sh

@@ -0,0 +1,19 @@
+#!/bin/bash -eu
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+
+
+$CXX $CXXFLAGS $LIB_FUZZING_ENGINE $SRC/phashmap_fuzz.cc -I./ -o $OUT/phashmap_fuzz

projects/phmap/phashmap_fuzz.cc

@@ -0,0 +1,66 @@
+/* Copyright 2021 Google LLC
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+      http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+#include <iostream>
+#include <bitset>
+#include <cinttypes>
+#include <unistd.h>
+#include "parallel_hashmap/phmap_dump.h"
+#include <fuzzer/FuzzedDataProvider.h>
+
+using phmap::flat_hash_map;
+using namespace std;
+
+void serialise_test(const uint8_t *data, size_t size) {
+    phmap::flat_hash_map<unsigned int, int> table;
+    FuzzedDataProvider fuzzed_data(data, size);
+    const int num_items = fuzzed_data.ConsumeIntegral<int16_t>();
+
+    for (int i=0; i < num_items; ++i)  {
+        table.insert(typename phmap::flat_hash_map<unsigned int, int>::value_type(
+                    fuzzed_data.ConsumeIntegral<uint32_t>(), 
+                    fuzzed_data.ConsumeIntegral<int32_t>()));
+    }
+
+    phmap::BinaryOutputArchive ar_out("/dump.data");
+    table.dump(ar_out);
+
+    //MapType table_in;
+    phmap::flat_hash_map<unsigned int, int> table_in;
+    phmap::BinaryInputArchive ar_in("/dump.data");
+    table_in.load(ar_in);
+
+    if(table == table_in) {
+        unlink("/dump.data");
+        return;
+    }
+    unlink("/dump.data");
+}
+
+void
+test_assignments(const uint8_t *data, size_t size) {
+    phmap::flat_hash_map<std::string, std::string> email;
+    FuzzedDataProvider fuzzed_data(data, size);
+    const int num_items = fuzzed_data.ConsumeIntegral<int16_t>();
+    for (int i=0; i < num_items; ++i) {
+            phmap::flat_hash_map<std::string, std::string>::value_type(
+                    fuzzed_data.ConsumeRandomLengthString(), 
+                    fuzzed_data.ConsumeRandomLengthString());
+    }
+    // Iterate through all of the items.
+    for (const auto& n: email) {}
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+    serialise_test(data, size);
+    test_assignments(data, size);
+    return 0;
+}

projects/phmap/project.yaml

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+homepage: "https://github.com/greg7mdp/parallel-hashmap"
+main_repo: 'https://github.com/greg7mdp/parallel-hashmap'
+primary_contact: "greg7mdp@gmail.com"
+language: c++
+auto_ccs :
+  - "david@adalogics.com"