Changeset 7e7b791 in mainline

Timestamp:

2011-05-13T14:34:31Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

5fd3f2d

Parents:

23f40280

Message:

Implement SYS_THREAD_UDELAY syscall for short delays

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

@@ -259 +259 @@
 extern sysarg_t sys_thread_get_id(thread_id_t *);
 extern sysarg_t sys_thread_usleep(uint32_t);
+extern sysarg_t sys_thread_udelay(uint32_t);
 
 #endif

kernel/generic/include/syscall/syscall.h

@@ -44 +44 @@
         SYS_THREAD_GET_ID,
         SYS_THREAD_USLEEP,
+        SYS_THREAD_UDELAY,
         
         SYS_TASK_GET_ID,

kernel/generic/src/proc/thread.c

@@ -918 +918 @@
 }
 
+sysarg_t sys_thread_udelay(uint32_t usec)
+{
+        asm_delay_loop(usec * CPU->delay_loop_const);
+        return 0;
+}
+
 /** @}
  */

kernel/generic/src/syscall/syscall.c

@@ -127 +127 @@
         (syshandler_t) sys_thread_get_id,
         (syshandler_t) sys_thread_usleep,
+        (syshandler_t) sys_thread_udelay,
         
         (syshandler_t) sys_task_get_id,