I2C branch. Goals: DMA-based driver, stm32f4x port.

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/i2c_dev@3541 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 23 insertions, 3 deletions

diff --git a/os/kernel/src/chthreads.c b/os/kernel/src/chthreads.c
index 46039561b..7b48f2b00 100644
--- a/os/kernel/src/chthreads.c
+++ b/os/kernel/src/chthreads.c
@@ -32,8 +32,6 @@
  *          area. In this scenario static variables are shared among all

  *          threads while automatic variables are local to the thread.<br>

  *          Operations defined for threads:

- *          - <b>Init</b>, a thread is prepared and put in the suspended

- *            state.

  *          - <b>Create</b>, a thread is started on the specified thread

  *            function. This operation is available in multiple variants,

  *            both static and dynamic.

@@ -335,9 +333,29 @@ void chThdYield(void) {
  * @api

  */

 void chThdExit(msg_t msg) {

-  Thread *tp = currp;

 

   chSysLock();

+  chThdExitS(msg);

+  /* The thread never returns here.*/

+}

+

+/**

+ * @brief   Terminates the current thread.

+ * @details The thread goes in the @p THD_STATE_FINAL state holding the

+ *          specified exit status code, other threads can retrieve the

+ *          exit status code by invoking the function @p chThdWait().

+ * @post    Eventual code after this function will never be executed,

+ *          this function never returns. The compiler has no way to

+ *          know this so do not assume that the compiler would remove

+ *          the dead code.

+ *

+ * @param[in] msg       thread exit code

+ *

+ * @sclass

+ */

+void chThdExitS(msg_t msg) {

+  Thread *tp = currp;

+

   tp->p_u.exitcode = msg;

 #if defined(THREAD_EXT_EXIT_HOOK)

   THREAD_EXT_EXIT_HOOK(tp);

@@ -353,6 +371,8 @@ void chThdExit(msg_t msg) {
     REG_REMOVE(tp);

 #endif

   chSchGoSleepS(THD_STATE_FINAL);

+  /* The thread never returns here.*/

+  chDbgAssert(FALSE, "chThdExitS(), #1", "zombies apocalypse");

 }

 

 #if CH_USE_WAITEXIT || defined(__DOXYGEN__)