Changeset d314571 in mainline for kernel/generic/src

Timestamp:

2018-11-11T15:46:26Z (7 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

9e889f6

Parents:

5c03bd30

git-author:

Jakub Jermar <jakub@…> (2018-11-10 14:36:06)

git-committer:

Jakub Jermar <jakub@…> (2018-11-11 15:46:26)

Message:

Turn wait queue into a kobject usable by uspace

In order to provide an elegant synchronization mechanism for userspace,
this commit adds syscalls to create, sleep on and wakeup from a wait
queue.

Location:

kernel/generic/src

Files:

• main/main.c (modified) (2 diffs)
• proc/thread.c (modified) (2 diffs)
• synch/syswaitq.c (added)
• syscall/syscall.c (modified) (2 diffs)

kernel/generic/src/main/main.c

@@ -78 +78 @@
 #include <synch/waitq.h>
 #include <synch/futex.h>
+#include <synch/syswaitq.h>
 #include <arch/arch.h>
 #include <arch.h>
@@ -279 +280 @@
         thread_init();
         futex_init();
+        sys_waitq_init();
 
         sysinfo_set_item_data("boot_args", NULL, bargs, str_size(bargs) + 1);

kernel/generic/src/proc/thread.c

@@ -48 +48 @@
 #include <synch/spinlock.h>
 #include <synch/waitq.h>
+#include <synch/syswaitq.h>
 #include <cpu.h>
 #include <str.h>
@@ -520 +521 @@
                         ipc_cleanup();
                         futex_task_cleanup();
+                        sys_waitq_task_cleanup();
                         LOG("Cleanup of task %" PRIu64 " completed.", TASK->taskid);
                 }

kernel/generic/src/syscall/syscall.c

@@ -48 +48 @@
 #include <synch/futex.h>
 #include <synch/smc.h>
+#include <synch/syswaitq.h>
 #include <ddi/ddi.h>
 #include <ipc/event.h>
@@ -136 +137 @@
 
         /* Synchronization related syscalls. */
+        [SYS_WAITQ_CREATE] = (syshandler_t) sys_waitq_create,
+        [SYS_WAITQ_SLEEP] = (syshandler_t) sys_waitq_sleep,
+        [SYS_WAITQ_WAKEUP] = (syshandler_t) sys_waitq_wakeup,
         [SYS_FUTEX_SLEEP] = (syshandler_t) sys_futex_sleep,
         [SYS_FUTEX_WAKEUP] = (syshandler_t) sys_futex_wakeup,