add custom exeception

src/common/exception.h

+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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. */
+
+#pragma once
+
+#ifdef PADDLE_MOBILE_DEBUG
+#include <stdio.h>
+#include <exception>
+#include <sstream>
+#include <stdexcept>
+#include <string>
+
+#endif
+
+namespace paddle_mobile {
+
+#ifdef PADDLE_MOBILE_DEBUG
+struct PaddleMobileException : public std::exception {
+  const std::string exception_prefix = "paddle mobile C++ Exception: \n";
+  std::string message;
+
+  PaddleMobileException(const char *header, const char *detail,
+                        const char *file, const int line) {
+    std::stringstream ss;
+    ss << exception_prefix << "| " << header << "\n";
+    ss << "| [in file] : " << file << " \n";
+    ss << "| [on line] : " << line << " \n";
+    ss << "| [detail]  : " << detail;
+    message = ss.str();
+  }
+  const char *what() const noexcept { return message.c_str(); }
+};
+
+#define PADDLE_MOBILE_THROW_EXCEPTION(...)                                 \
+  {                                                                        \
+    char buffer[1000];                                                     \
+    snprintf(buffer, sizeof(buffer), __VA_ARGS__);                         \
+    std::string detail(buffer);                                            \
+    throw paddle_mobile::PaddleMobileException("Custom Exception", buffer, \
+                                               __FILE__, __LINE__);        \
+  }
+
+#define PADDLE_MOBILE_ASSERT(stat, ...)                                       \
+  {                                                                           \
+    if (stat) {                                                               \
+    } else {                                                                  \
+      char buffer[1000];                                                      \
+      snprintf(buffer, sizeof(buffer), __VA_ARGS__);                          \
+      std::string detail(buffer);                                             \
+      throw paddle_mobile::PaddleMobileException("paddle-mobile assert",      \
+                                                 buffer, __FILE__, __LINE__); \
+    }                                                                         \
+  }
+#else
+#define PADDLE_MOBILE_THROW_EXCEPTION(...)
+#define PADDLE_MOBILE_ASSERT(stat, ...)
+#endif
+
+}  // namespace paddle_mobile
\ No newline at end of file

test/CMakeLists.txt

@@ -55,4 +55,8 @@ target_link_libraries(test-softmax paddle-mobile)
 
 # gen test
 ADD_EXECUTABLE(test-gemm common/test_gemm.cpp)
-target_link_libraries(test-gemm paddle-mobile)
\ No newline at end of file
+target_link_libraries(test-gemm paddle-mobile)
+
+# gen test
+ADD_EXECUTABLE(test-exception common/test_exception.cpp)
+target_link_libraries(test-exception paddle-mobile)
\ No newline at end of file

test/common/test_exception.cpp

+/* Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
+
+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 "common/exception.h"
+
+int main() {
+  PADDLE_MOBILE_ASSERT(false, "assert");
+  PADDLE_MOBILE_THROW_EXCEPTION("throw a exception");
+  return 0;
+}