(8) Event missing_lock: Accessing "status.state" without holding lock "WIRELESS_DEV_CTL.status_mutex". Elsewhere, "MobilePPPStatus.state" is accessed with "WIRELESS_DEV_CTL.status_mutex" held 178 out of 209 times (126 of these accesses strongly imply that it is necessary). Also see events: [example_lock][example_access][example_lock][example_access][example_lock][example_access][example_lock][example_access][example_lock][example_access]怎么修改
时间: 2023-12-09 21:06:54 浏览: 28
在这个问题中,程序似乎在没有持有锁的情况下访问了“status.state”,这可能会导致数据竞争和意外的行为。因此,我们需要在访问“status.state”之前先获取“WIRELESS_DEV_CTL.status_mutex”锁。
具体来说,我们可以修改代码,确保在访问“status.state”之前获取“WIRELESS_DEV_CTL.status_mutex”锁。例如,我们可以使用以下代码:
```
// Acquire the lock before accessing status.state
pthread_mutex_lock(&WIRELESS_DEV_CTL.status_mutex);
status.state = new_state;
pthread_mutex_unlock(&WIRELESS_DEV_CTL.status_mutex);
```
这将确保在访问“status.state”之前先获取锁,并在完成后释放锁。请注意,这只是一个示例,具体实现可能因代码和上下文而异。
相关问题
./rabbitmq-plugins enable rabbitmq_management :enoent
As an AI language model, I don't have the context to provide a specific solution to this error. However, the error message indicates that the RabbitMQ plugin "rabbitmq_management" is not found. This could be due to a missing dependency or an incorrect installation.
Here are some general steps you can take to resolve this error:
1. Check if the plugin is installed: Run the command "rabbitmq-plugins list" to see if the "rabbitmq_management" plugin is installed.
2. Install the plugin: If the plugin is not installed, run the command "rabbitmq-plugins enable rabbitmq_management" to install and enable the plugin.
3. Check for errors: If there are any errors during the installation or enabling of the plugin, check the RabbitMQ logs for more information.
4. Verify the installation: Once the plugin is installed and enabled, try accessing the RabbitMQ management UI to verify that it is working correctly.
If the issue persists, you may need to seek help from the RabbitMQ community or support team.
org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.register_jsp
This error message indicates that the web application is unable to find the compiled JSP file for the "register.jsp" page. This could be caused by a few different issues:
1. The JSP file may not have been compiled yet. Make sure that the JSP file has been compiled by the server before accessing it.
2. The compiled JSP file may have been deleted or moved. Check to make sure that the compiled JSP file exists in the expected location.
3. The classpath may not be set up correctly. Check that the classpath includes the directory where the compiled JSP files are stored.
4. There may be a typo or error in the JSP file itself that is preventing it from being compiled correctly. Check the JSP file for any syntax errors or other issues.
To resolve this issue, try recompiling the JSP file and making sure that the compiled file is in the correct location. Check the classpath to make sure that it includes the directory where the compiled JSP files are stored. If you are still having issues, check the JSP file for any syntax errors or other issues that may be preventing it from being compiled correctly.