Finite State Machine for Security

A generic FSM has been added to DDS Security Core component to realize authentication handshake process.
The list of the states and the transitions are given in the creation and the FSM is started with a start call.
Passing arguments to transition funstions is possible.
Timeout transitions are possible.

Signed-off-by: Kurtulus Oksuztepe <kurtulus.oksuztepe@adlinktech.com>

src/ddsrt/include/dds/ddsrt/threads.h

@@ -140,11 +140,20 @@ ddsrt_nonnull((1,2,3,4));
 /**
  * @brief Retrieve integer representation of the given thread id.
  *
- * @returns The integer representation of the given thread.
+ * @returns The integer representation of the current thread.
  */
 DDS_EXPORT ddsrt_tid_t
 ddsrt_gettid(void);
 
+/**
+ * @brief Retrieve integer representation of the given thread id.
+ *
+ * @returns The integer representation of the given thread.
+ */
+DDS_EXPORT ddsrt_tid_t
+ddsrt_gettid_for_thread( ddsrt_thread_t thread);
+
+
 /**
  * @brief Return thread ID of the calling thread.
  *

src/ddsrt/src/threads/freertos/threads.c

@@ -83,6 +83,13 @@ ddsrt_gettid(void)
   return status.xTaskNumber;
 }
 
+DDS_EXPORT ddsrt_tid_t
+ddsrt_gettid_for_thread( ddsrt_thread_t thread)
+{
+  return (ddsrt_tid_t)thread.task;
+}
+
+
 ddsrt_thread_t
 ddsrt_thread_self(void)
 {

src/ddsrt/src/threads/posix/threads.c

@@ -346,6 +346,14 @@ ddsrt_gettid(void)
   return tid;
 }
 
+ddsrt_tid_t
+ddsrt_gettid_for_thread( ddsrt_thread_t thread)
+{
+  return (ddsrt_tid_t) thread.v;
+
+}
+
+
 ddsrt_thread_t
 ddsrt_thread_self(void)
 {

src/ddsrt/src/threads/windows/threads.c

@@ -173,6 +173,14 @@ ddsrt_gettid(void)
   return GetCurrentThreadId();
 }
 
+
+ddsrt_tid_t
+ddsrt_gettid_for_thread( ddsrt_thread_t thread)
+{
+  return (ddsrt_tid_t) thread.tid;
+
+}
+
 ddsrt_thread_t
 ddsrt_thread_self(
     void)