Import LLDB as of upstream SVN r225923 (git 2b588ecd)

This corresponds with the branchpoint for the 3.6 release.
A number of files not required for the FreeBSD build have been removed.

Sponsored by:	DARPA, AFRL

1 files changed, 77 insertions, 0 deletions

diff --git a/source/Host/freebsd/HostThreadFreeBSD.cpp b/source/Host/freebsd/HostThreadFreeBSD.cpp
new file mode 100644
index 0000000..7d611bb
--- /dev/null
+++ b/source/Host/freebsd/HostThreadFreeBSD.cpp
@@ -0,0 +1,77 @@
+//===-- HostThreadFreeBSD.cpp -----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// lldb Includes
+#include "lldb/Host/freebsd/HostThreadFreeBSD.h"
+#include "lldb/Host/Host.h"
+
+// C includes
+#include <errno.h>
+#include <pthread.h>
+#include <pthread_np.h>
+#include <stdlib.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+
+// C++ includes
+#include <string>
+
+using namespace lldb_private;
+
+HostThreadFreeBSD::HostThreadFreeBSD()
+{
+}
+
+HostThreadFreeBSD::HostThreadFreeBSD(lldb::thread_t thread)
+    : HostThreadPosix(thread)
+{
+}
+
+void
+HostThreadFreeBSD::GetName(lldb::tid_t tid, llvm::SmallVectorImpl<char> &name)
+{
+    name.clear();
+    int pid = Host::GetCurrentProcessID();
+
+    struct kinfo_proc *kp = nullptr, *nkp;
+    size_t len = 0;
+    int error;
+    int ctl[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID | KERN_PROC_INC_THREAD, (int)pid};
+
+    while (1)
+    {
+        error = sysctl(ctl, 4, kp, &len, nullptr, 0);
+        if (kp == nullptr || (error != 0 && errno == ENOMEM))
+        {
+            // Add extra space in case threads are added before next call.
+            len += sizeof(*kp) + len / 10;
+            nkp = (struct kinfo_proc *)realloc(kp, len);
+            if (nkp == nullptr)
+            {
+                free(kp);
+                return;
+            }
+            kp = nkp;
+            continue;
+        }
+        if (error != 0)
+            len = 0;
+        break;
+    }
+
+    for (size_t i = 0; i < len / sizeof(*kp); i++)
+    {
+        if (kp[i].ki_tid == (lwpid_t)tid)
+        {
+            name.append(kp[i].ki_tdname, kp[i].ki_tdname + strlen(kp[i].ki_tdname));
+            break;
+        }
+    }
+    free(kp);
+}