X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/acc4596bfe40a4bf7f59d5b94bc5643f86806dda..2ad536e710c5936ff8e525e4bbb5e7046f292aac:/src/xbt/backtrace.cpp

diff --git a/src/xbt/backtrace.cpp b/src/xbt/backtrace.cpp
index f897e12adb..4914d2b0b1 100644
--- a/src/xbt/backtrace.cpp
+++ b/src/xbt/backtrace.cpp
@@ -1,29 +1,100 @@
-/* Copyright (c) 2005-2016. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2005-2023. The SimGrid Team. All rights reserved.          */
 
-#include <cstddef>
-
-#include <xbt/log.h>
-#include <xbt/backtrace.h>
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "src/internal_config.h"
 
-extern "C" {
+#include <simgrid/actor.h>
+#include <simgrid/s4u/Actor.hpp>
+#include <xbt/backtrace.hpp>
+#include <xbt/string.hpp>
+#include <xbt/sysdep.h>
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_backtrace, xbt, "Backtrace");
+#include <cstdio>
+#include <cstdlib>
+#include <sstream>
 
-}
+#if HAVE_BOOST_STACKTRACE_BACKTRACE
+#define BOOST_STACKTRACE_USE_BACKTRACE
+#include <boost/stacktrace.hpp>
+#include <boost/stacktrace/detail/frame_decl.hpp>
+#elif HAVE_BOOST_STACKTRACE_ADDR2LINE
+#define BOOST_STACKTRACE_USE_ADDR2LINE
+#include <boost/stacktrace.hpp>
+#include <boost/stacktrace/detail/frame_decl.hpp>
+#endif
 
-/** @brief show the backtrace of the current point (lovely while debuging) */
-void xbt_backtrace_display_current(void)
+/** @brief show the backtrace of the current point (lovely while debugging) */
+void xbt_backtrace_display_current()
 {
-  const std::size_t size = 10;
-  xbt_backtrace_location_t bt[size];
-  size_t used = xbt_backtrace_current(bt, size);
-  xbt_backtrace_display(bt, used);
+  simgrid::xbt::Backtrace().display();
 }
 
-#if HAVE_BACKTRACE && HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
-# include "src/xbt/backtrace_linux.cpp"
+namespace simgrid::xbt {
+
+class BacktraceImpl {
+#if HAVE_BOOST_STACKTRACE_BACKTRACE || HAVE_BOOST_STACKTRACE_ADDR2LINE
+  const boost::stacktrace::stacktrace st;
+
+public:
+  std::string resolve() const
+  {
+    std::stringstream ss;
+
+    int frame_count = 0;
+    bool print      = false;
+
+    for (boost::stacktrace::frame const& frame : st) {
+      const std::string frame_name = frame.name();
+      if (print) {
+        if (frame_name.rfind("simgrid::xbt::MainFunction", 0) == 0 ||
+            frame_name.rfind("simgrid::kernel::context::Context::operator()()", 0) == 0)
+          break;
+        ss << "  ->  #" << frame_count++ << " ";
+        if (xbt_log_no_loc) // Don't display file source and line if so
+          ss << (frame_name.empty() ? "(debug info not found and log:no_loc activated)" : frame_name) << "\n";
+        else
+          ss << frame << "\n";
+        // If we are displaying the user side of a simcall, remove the crude details of context switching
+        if (frame_name.find("simgrid::kernel::actor::simcall_answered") != std::string::npos ||
+            frame_name.find("simgrid::kernel::actor::simcall_blocking") != std::string::npos ||
+            frame_name.find("simcall_run_answered") != std::string::npos ||
+            frame_name.find("simcall_run_blocking") != std::string::npos) {
+          frame_count = 0;
+          ss.str(""); // This is how you clear a stringstream in C++. clear() is something else :'(
+        }
+        if (frame_name == "main")
+          break;
+      } else {
+        if (frame_name == "simgrid::xbt::Backtrace::Backtrace()")
+          print = true;
+      }
+    }
+
+    return ss.str();
+  }
 #else
-# include "src/xbt/backtrace_dummy.cpp"
+
+public:
+  std::string resolve() const { return ""; } // fallback value
 #endif
+};
+
+Backtrace::Backtrace() : impl_(std::make_shared<BacktraceImpl>()) {}
+
+std::string Backtrace::resolve() const
+{
+  return impl_->resolve();
+}
+
+void Backtrace::display() const
+{
+  std::string backtrace = resolve();
+  std::fprintf(stderr, "Backtrace (displayed in actor %s%s):\n%s\n",
+               simgrid::s4u::Actor::is_maestro() ? "maestro" : sg_actor_self_get_name(),
+               (xbt_log_no_loc ? " -- short trace because of --log=no_loc" : ""),
+               backtrace.empty() ? "(backtrace not set -- did you install Boost.Stacktrace?)" : backtrace.c_str());
+}
+
+} // namespace simgrid::xbt