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

1 files changed, 0 insertions, 29 deletions

diff --git a/lldb/source/Host/freebsd/Host.cpp b/lldb/source/Host/freebsd/Host.cpp
index e2bc1dc6232..62cf29365b0 100644
--- a/lldb/source/Host/freebsd/Host.cpp
+++ b/lldb/source/Host/freebsd/Host.cpp
@@ -50,35 +50,6 @@ extern "C" {
 using namespace lldb;
 using namespace lldb_private;
 
-void
-Host::Backtrace (Stream &strm, uint32_t max_frames)
-{
-    char backtrace_path[] = "/tmp/lldb-backtrace-tmp-XXXXXX";
-    int backtrace_fd = ::mkstemp (backtrace_path);
-    if (backtrace_fd != -1)
-    {
-        std::vector<void *> frame_buffer (max_frames, NULL);
-        int count = ::backtrace (&frame_buffer[0], frame_buffer.size());
-        ::backtrace_symbols_fd (&frame_buffer[0], count, backtrace_fd);
-
-        const off_t buffer_size = ::lseek(backtrace_fd, 0, SEEK_CUR);
-
-        if (::lseek(backtrace_fd, 0, SEEK_SET) == 0)
-        {
-            char *buffer = (char *)::malloc (buffer_size);
-            if (buffer)
-            {
-                ssize_t bytes_read = ::read (backtrace_fd, buffer, buffer_size);
-                if (bytes_read > 0)
-                    strm.Write(buffer, bytes_read);
-                ::free (buffer);
-            }
-        }
-        ::close (backtrace_fd);
-        ::unlink (backtrace_path);
-    }
-}
-
 size_t
 Host::GetEnvironment (StringList &env)
 {