Changeset 3ce7f082 in mainline

Timestamp:

2007-04-06T12:53:07Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

dd655970

Parents:

c9d20755

Message:

add syscall for getting current thread ID

Location:

kernel/generic

Files:

• include/proc/thread.h (modified) (1 diff)
• include/syscall/syscall.h (modified) (1 diff)
• src/proc/thread.c (modified) (1 diff)
• src/syscall/syscall.c (modified) (1 diff)

kernel/generic/include/proc/thread.h

@@ -251 +251 @@
 unative_t sys_thread_create(uspace_arg_t *uspace_uarg, char *uspace_name);
 unative_t sys_thread_exit(int uspace_status);
+unative_t sys_thread_get_id(void);
 
 #endif

kernel/generic/include/syscall/syscall.h

@@ -41 +41 @@
         SYS_THREAD_CREATE,
         SYS_THREAD_EXIT,
+        SYS_THREAD_GET_ID,
         SYS_TASK_GET_ID,
         SYS_FUTEX_SLEEP,

kernel/generic/src/proc/thread.c

@@ -679 +679 @@
 }
 
+/** Syscall for getting TID.
+ *
+ * @return Thread ID.
+ */
+unative_t sys_thread_get_id(void)
+{
+        /*
+         * No need to acquire lock on THREAD because tid
+         * remains constant for the lifespan of the thread.
+         */
+        return THREAD->tid;
+}
+
 /** @}
  */
-

kernel/generic/src/syscall/syscall.c

@@ -119 +119 @@
         (syshandler_t) sys_thread_create,
         (syshandler_t) sys_thread_exit,
+        (syshandler_t) sys_thread_get_id,
         (syshandler_t) sys_task_get_id,