#279, #287, #296: Wall clock profiler improvements:

- stable interval
 - thread states (runnable vs. sleeping)
 - Java API to update set of monitored threads

src/stackFrame_arm.cpp

@@ -16,6 +16,7 @@
 
 #if defined(__arm__) || defined(__thumb__)
 
+#include <errno.h>
 #include "stackFrame.h"
 
 
@@ -59,8 +60,8 @@ bool StackFrame::pop(bool trust_frame_pointer) {
     return false;
 }
 
-void StackFrame::restartSyscall() {
-    // Not implemented on this arch
+bool StackFrame::checkInterruptedSyscall() {
+    return retval() == (uintptr_t)-EINTR;
 }
 
 int StackFrame::callerLookupSlots() {
@@ -71,4 +72,9 @@ bool StackFrame::isReturnAddress(instruction_t* pc) {
     return false;
 }
 
+bool StackFrame::isSyscall(instruction_t* pc) {
+    // swi #0
+    return *pc == 0xef000000;
+}
+
 #endif // defined(__arm__) || defined(__thumb__)