Remove Host::Backtrace in favor of llvm::sys::PrintStackTrace()

This removes Host::Backtrace from the codebase, and changes all
call sites to use llvm::sys::PrintStackTrace().  This makes the
functionality available for all platforms, and even for platforms
which currently had a supported implementation of Host::Backtrace,
this patch should enable richer information in stack traces, such
as file and line number information, as well as giving it the
ability to unwind through inlined functions.

llvm-svn: 231511

2 files changed, 18 insertions, 3 deletions

diff --git a/lldb/source/Core/Log.cpp b/lldb/source/Core/Log.cpp
index fe4cfb366c8..2ac538470a6 100644
--- a/lldb/source/Core/Log.cpp
+++ b/lldb/source/Core/Log.cpp
@@ -29,6 +29,8 @@
 #include "lldb/Interpreter/Args.h"
 
 #include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/Signals.h"
 using namespace lldb;
 using namespace lldb_private;
 
@@ -122,8 +124,13 @@ Log::PrintfWithFlagsVarArg (uint32_t flags, const char *format, va_list args)
         header.PrintfVarArg (format, args);
         stream_sp->Printf("%s\n", header.GetData());
         
-        if (m_options.Test (LLDB_LOG_OPTION_BACKTRACE))
-            Host::Backtrace (*stream_sp, 1024);
+        if (m_options.Test(LLDB_LOG_OPTION_BACKTRACE)) 
+        {
+            std::string back_trace;
+            llvm::raw_string_ostream stream(back_trace);
+            llvm::sys::PrintStackTrace(stream);
+            stream_sp->PutCString(back_trace.c_str());
+        }
         stream_sp->Flush();
     }
 }
diff --git a/lldb/source/Core/Module.cpp b/lldb/source/Core/Module.cpp
index 2a1663be5cc..d394118cba7 100644
--- a/lldb/source/Core/Module.cpp
+++ b/lldb/source/Core/Module.cpp
@@ -40,6 +40,9 @@
 
 #include "Plugins/ObjectFile/JIT/ObjectFileJIT.h"
 
+#include "llvm/Support/raw_os_ostream.h"
+#include "llvm/Support/Signals.h"
+
 using namespace lldb;
 using namespace lldb_private;
 
@@ -1234,7 +1237,12 @@ Module::LogMessageVerboseBacktrace (Log *log, const char *format, ...)
         log_message.PrintfVarArg (format, args);
         va_end (args);
         if (log->GetVerbose())
-            Host::Backtrace (log_message, 1024);
+        {
+            std::string back_trace;
+            llvm::raw_string_ostream stream(back_trace);
+            llvm::sys::PrintStackTrace(stream);
+            log_message.PutCString(back_trace.c_str());
+        }
         log->PutCString(log_message.GetString().c_str());
     }
 }