Diff: rtos/Thread.h

Revision:

8:88a1a9c26ae3

Parent:

6:350b53afb889

Child:

31:015df9e602b6

--- a/rtos/Thread.h	Fri Nov 23 10:16:38 2012 +0000
+++ b/rtos/Thread.h	Tue Nov 27 16:55:38 2012 +0000
@@ -1,70 +1,108 @@
-/* Copyright (c) 2012 mbed.org */
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
 #ifndef THREAD_H
-#define THREAD_H 
+#define THREAD_H
 
 #include <stdint.h>
 #include "cmsis_os.h"
 
 namespace rtos {
 
-/*! The Thread class allow defining, creating, and controlling thread functions in the system. */
+/** The Thread class allow defining, creating, and controlling thread functions in the system. */
 class Thread {
 public:
-    /*! Create a new thread, and start it executing the specified function.
-      \param   task           function to be executed by this thread.
-      \param   argument       pointer that is passed to the thread function as start argument. (default: NULL).
-      \param   priority       initial priority of the thread function. (default: osPriorityNormal).
-      \param   stack_size      stack size (in bytes) requirements for the thread function. (default: DEFAULT_STACK_SIZE).
-      \param   stack_pointer  pointer to the stack area to be used by this thread (default: NULL).
+    /** Create a new thread, and start it executing the specified function.
+      @param   task           function to be executed by this thread.
+      @param   argument       pointer that is passed to the thread function as start argument. (default: NULL).
+      @param   priority       initial priority of the thread function. (default: osPriorityNormal).
+      @param   stack_size      stack size (in bytes) requirements for the thread function. (default: DEFAULT_STACK_SIZE).
+      @param   stack_pointer  pointer to the stack area to be used by this thread (default: NULL).
     */
     Thread(void (*task)(void const *argument), void *argument=NULL,
            osPriority priority=osPriorityNormal,
            uint32_t stack_size=DEFAULT_STACK_SIZE,
            unsigned char *stack_pointer=NULL);
     
-    /*! Terminate execution of a thread and remove it from Active Threads
-      \return  status code that indicates the execution status of the function.
+    /** Terminate execution of a thread and remove it from Active Threads
+      @return  status code that indicates the execution status of the function.
     */
     osStatus terminate();
     
-    /*! Set priority of an active thread
-      \param   priority  new priority value for the thread function.
-      \return  status code that indicates the execution status of the function.
+    /** Set priority of an active thread
+      @param   priority  new priority value for the thread function.
+      @return  status code that indicates the execution status of the function.
     */
     osStatus set_priority(osPriority priority);
     
-    /*! Get priority of an active thread
-      \ return  current priority value of the thread function.
+    /** Get priority of an active thread
+      @return  current priority value of the thread function.
     */
     osPriority get_priority();
     
-    /*! Set the specified Signal Flags of an active thread.
-      \param   signals  specifies the signal flags of the thread that should be set.
-      \return  previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.
+    /** Set the specified Signal Flags of an active thread.
+      @param   signals  specifies the signal flags of the thread that should be set.
+      @return  previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.
     */
     int32_t signal_set(int32_t signals);
     
-    /*! Wait for one or more Signal Flags to become signaled for the current RUNNING thread. 
-      \param   signals   wait until all specified signal flags set or 0 for any single signal flag.
-      \param   millisec  timeout value or 0 in case of no time-out. (default: osWaitForever).
-      \return  event flag information or error code.
+    /** State of the Thread */
+    enum State {
+        Inactive,           /**< Not created or terminated */
+        Ready,              /**< Ready to run */
+        Running,            /**< Running */
+        WaitingDelay,       /**< Waiting for a delay to occur */
+        WaitingInterval,    /**< Waiting for an interval to occur */
+        WaitingOr,          /**< Waiting for one event in a set to occur */
+        WaitingAnd,         /**< Waiting for multiple events in a set to occur */
+        WaitingSemaphore,   /**< Waiting for a semaphore event to occur */
+        WaitingMailbox,     /**< Waiting for a mailbox event to occur */
+        WaitingMutex,       /**< Waiting for a mutex event to occur */
+    };
+    
+    /** State of this Thread
+      @return  the State of this Thread
+    */
+    State get_state();
+    
+    /** Wait for one or more Signal Flags to become signaled for the current RUNNING thread. 
+      @param   signals   wait until all specified signal flags set or 0 for any single signal flag.
+      @param   millisec  timeout value or 0 in case of no time-out. (default: osWaitForever).
+      @return  event flag information or error code.
     */
     static osEvent signal_wait(int32_t signals, uint32_t millisec=osWaitForever);
     
-    
-    /*! Wait for a specified time period in millisec:
-      \param   millisec  time delay value
-      \return  status code that indicates the execution status of the function. 
+    /** Wait for a specified time period in millisec:
+      @param   millisec  time delay value
+      @return  status code that indicates the execution status of the function. 
     */
     static osStatus wait(uint32_t millisec);
     
-    /*! Pass control to next thread that is in state READY.
-      \return  status code that indicates the execution status of the function.
+    /** Pass control to next thread that is in state READY.
+      @return  status code that indicates the execution status of the function.
     */
     static osStatus yield();
     
-    /*! Get the thread id of the current running thread.
-      \return  thread ID for reference by other functions or NULL in case of error.
+    /** Get the thread id of the current running thread.
+      @return  thread ID for reference by other functions or NULL in case of error.
     */
     static osThreadId gettid();