From b8aa37d529e4bb66d555d03e537f7c26255a2fdd Mon Sep 17 00:00:00 2001
From: wopeizl <wopeizl@163.com>
Date: Tue, 27 Aug 2019 18:51:02 +0800
Subject: [PATCH] =?UTF-8?q?save=20the=20callstack=20information=20to=20fil?=
 =?UTF-8?q?e=20when=20exception=20throws=20test=3Ddev=E2=80=A6=20(#19324)?=
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* save the callstack information to file when exception throws test=develop
---
 paddle/fluid/platform/enforce.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/paddle/fluid/platform/enforce.h b/paddle/fluid/platform/enforce.h
index 03802f38538..862ea8979ab 100644
--- a/paddle/fluid/platform/enforce.h
+++ b/paddle/fluid/platform/enforce.h
@@ -26,6 +26,7 @@ limitations under the License. */
 #include <thrust/system_error.h>
 #endif  // PADDLE_WITH_CUDA
 
+#include <fstream>
 #include <iomanip>
 #include <iostream>
 #include <memory>
@@ -82,6 +83,22 @@ struct EnforceNotMet : public std::exception {
   const char* what() const noexcept override { return err_str_.c_str(); }
 
  private:
+  const std::string output_file_name{"paddle_err_info"};
+  void saveErrorInformation(const std::string& err) {
+    std::stringstream ss;
+    ss << output_file_name;
+    std::time_t t = std::time(nullptr);
+    std::tm* tm = std::localtime(&t);
+    char mbstr[100];
+    std::strftime(mbstr, sizeof(mbstr), "%F-%H-%M-%S", tm);
+    ss << "_" << mbstr << ".log";
+    std::ofstream err_file(ss.str(), std::ofstream::out);
+    if (err_file.is_open()) {
+      err_file << err;
+      err_file.close();
+    }
+  }
+
   template <typename StrType>
   inline void Init(StrType what, const char* f, int l) {
     static constexpr int TRACE_STACK_LIMIT = 100;
@@ -112,6 +129,8 @@ struct EnforceNotMet : public std::exception {
     sout << "Windows not support stack backtrace yet.";
 #endif
     err_str_ = sout.str();
+
+    saveErrorInformation(err_str_);
   }
 };
 
-- 
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