DragonOS-Community/DragonOS
1
1
Fork 0
mirror of https://github.com/DragonOS-Community/DragonOS.git synced 2025-06-10 03:56:49 +00:00
Code Issues Releases Wiki Activity

修复显示刷新线程的空指针问题 (#228)

Browse Source
This commit is contained in:
login 2023-04-05 00:53:35 +08:00 committed by GitHub
parent 083e89172f
commit 5d00b18528
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/src/driver/video/video.c
View File

@ -65,10 +65,12 @@ int video_refresh_daemon(void *unused)
if (likely(video_refresh_target != NULL)) if (likely(video_refresh_target != NULL))
{ {
spin_lock(&daemon_refresh_lock); spin_lock(&daemon_refresh_lock);
if (video_frame_buffer_info.vaddr != NULL)
memcpy((void *)video_frame_buffer_info.vaddr, (void *)video_refresh_target->vaddr, memcpy((void *)video_frame_buffer_info.vaddr, (void *)video_refresh_target->vaddr,
video_refresh_target->size); video_refresh_target->size);
spin_unlock(&daemon_refresh_lock); spin_unlock(&daemon_refresh_lock);
video_daemon_pcb->virtual_runtime = 0xfffff0000000; // 临时解决由于显示刷新进程的虚拟运行时间过大/过小，导致其不运行，或者一直运行的问题。将来应使用实时调度解决它 video_daemon_pcb->virtual_runtime =
0xfffff0000000; // 临时解决由于显示刷新进程的虚拟运行时间过大/过小，导致其不运行，或者一直运行的问题。将来应使用实时调度解决它
} }
video_refresh_expire_jiffies = rs_timer_next_n_ms_jiffies(REFRESH_INTERVAL << 1); video_refresh_expire_jiffies = rs_timer_next_n_ms_jiffies(REFRESH_INTERVAL << 1);
} }