Initial work

external/android-emugl/shared/OpenglCodecCommon/ChecksumCalculatorThreadInfo.cpp

@@ -0,0 +1,103 @@
+/*
+* Copyright (C) 2016 The Android Open Source Project
+*
+* 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 "ChecksumCalculatorThreadInfo.h"
+
+#include "emugl/common/crash_reporter.h"
+#include "emugl/common/lazy_instance.h"
+#include "emugl/common/thread_store.h"
+
+#include <stdio.h>
+#include <atomic>
+#include <string>
+
+namespace {
+
+class ChecksumCalculatorThreadStore : public ::emugl::ThreadStore {
+public:
+    ChecksumCalculatorThreadStore() : ::emugl::ThreadStore(NULL) {}
+};
+
+#ifdef TRACE_CHECKSUMHELPER
+std::atomic<size_t> sNumInstances(0);
+#endif  // TRACE_CHECKSUMHELPER
+
+}
+
+static ::emugl::LazyInstance<ChecksumCalculatorThreadStore> s_tls =
+        LAZY_INSTANCE_INIT;
+
+static ChecksumCalculatorThreadInfo* getChecksumCalculatorThreadInfo() {
+    return static_cast<ChecksumCalculatorThreadInfo*>(s_tls->get());
+}
+
+ChecksumCalculatorThreadInfo::ChecksumCalculatorThreadInfo() {
+    LOG_CHECKSUMHELPER(
+        "%s: Checksum thread created (%u instances)\n", __FUNCTION__,
+        (size_t)sNumInstances);
+    s_tls->set(this);
+}
+
+ChecksumCalculatorThreadInfo::~ChecksumCalculatorThreadInfo() {
+    LOG_CHECKSUMHELPER(
+        "%s: GLprotocol destroyed (%u instances)\n", __FUNCTION__,
+        (size_t)sNumInstances);
+    s_tls->set(NULL);
+}
+
+uint32_t ChecksumCalculatorThreadInfo::getVersion() {
+    return getChecksumCalculatorThreadInfo()->m_protocol.getVersion();
+}
+
+bool ChecksumCalculatorThreadInfo::setVersion(uint32_t version) {
+    return getChecksumCalculatorThreadInfo()->m_protocol.setVersion(version);
+}
+
+size_t ChecksumCalculatorThreadInfo::checksumByteSize() {
+    return getChecksumCalculatorThreadInfo()->m_protocol.checksumByteSize();
+}
+
+bool ChecksumCalculatorThreadInfo::writeChecksum(void* buf,
+                                                 size_t bufLen,
+                                                 void* outputChecksum,
+                                                 size_t outputChecksumLen) {
+    ChecksumCalculator& protocol =
+            getChecksumCalculatorThreadInfo()->m_protocol;
+    protocol.addBuffer(buf, bufLen);
+    return protocol.writeChecksum(outputChecksum, outputChecksumLen);
+}
+
+bool ChecksumCalculatorThreadInfo::validate(void* buf,
+                                            size_t bufLen,
+                                            void* checksum,
+                                            size_t checksumLen) {
+    ChecksumCalculator& protocol =
+            getChecksumCalculatorThreadInfo()->m_protocol;
+    protocol.addBuffer(buf, bufLen);
+    return protocol.validate(checksum, checksumLen);
+}
+
+void ChecksumCalculatorThreadInfo::validOrDie(void* buf,
+                                              size_t bufLen,
+                                              void* checksum,
+                                              size_t checksumLen,
+                                              const char* message) {
+    // We should actually call crashhandler_die(message), but I don't think we
+    // can link to that library from here
+    if (!validate(buf, bufLen, checksum, checksumLen)) {
+        emugl_crash_reporter(message);
+    }
+}