Refs #10260 OpenBSD support #25327

runtime/vm/thread_interrupter_openbsd.cc

Index: runtime/vm/thread_interrupter_openbsd.cc
diff --git a/runtime/vm/thread_interrupter_linux.cc b/runtime/vm/thread_interrupter_openbsd.cc
similarity index 82%
copy from runtime/vm/thread_interrupter_linux.cc
copy to runtime/vm/thread_interrupter_openbsd.cc
index 28ec681fa555813ee343a7c5bbb95be5cd05925a..f5042362d24f5b05c72224638c1c6a007fae44a6 100644
--- a/runtime/vm/thread_interrupter_linux.cc
+++ b/runtime/vm/thread_interrupter_openbsd.cc
@@ -3,9 +3,9 @@
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
-#if defined(TARGET_OS_LINUX)
+#if defined(TARGET_OS_OPENBSD)
 
-#include <errno.h>  // NOLINT
+#include <errno.h>
 
 #include "vm/flags.h"
 #include "vm/os.h"
@@ -18,7 +18,7 @@ namespace dart {
 DECLARE_FLAG(bool, thread_interrupter);
 DECLARE_FLAG(bool, trace_thread_interrupter);
 
-class ThreadInterrupterLinux : public AllStatic {
+class ThreadInterrupterOpenBSD : public AllStatic {
  public:
   static void ThreadInterruptSignalHandler(int signal, siginfo_t* info,
                                            void* context_) {
@@ -30,8 +30,7 @@ class ThreadInterrupterLinux : public AllStatic {
       return;
     }
     // Extract thread state.
-    ucontext_t* context = reinterpret_cast<ucontext_t*>(context_);
-    mcontext_t mcontext = context->uc_mcontext;
+    mcontext_t mcontext = reinterpret_cast<mcontext_t &>(context_);
     InterruptedThreadState its;
     its.pc = SignalHandler::GetProgramCounter(mcontext);
     its.fp = SignalHandler::GetFramePointer(mcontext);
@@ -42,7 +41,6 @@ class ThreadInterrupterLinux : public AllStatic {
   }
 };
 
-
 void ThreadInterrupter::InterruptThread(OSThread* thread) {
   if (FLAG_trace_thread_interrupter) {
     OS::Print("ThreadInterrupter interrupting %p\n",
@@ -54,7 +52,8 @@ void ThreadInterrupter::InterruptThread(OSThread* thread) {
 
 
 void ThreadInterrupter::InstallSignalHandler() {
-  SignalHandler::Install(ThreadInterrupterLinux::ThreadInterruptSignalHandler);
+  SignalHandler::Install(ThreadInterrupterOpenBSD::
+                         ThreadInterruptSignalHandler);
 }
 
 
@@ -65,4 +64,4 @@ void ThreadInterrupter::RemoveSignalHandler() {
 
 }  // namespace dart
 
-#endif  // defined(TARGET_OS_LINUX)
+#endif  // defined(TARGET_OS_OPENBSD)