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# Civetweb API Reference
### `mg_lock_context( ctx );`
### Parameters
| Parameter | Type | Description |
| :--- | :--- | :--- |
|**`ctx`**|`struct mg_context *`|The context to put the lock on|
### Return Value
*none*
### Description
The function `mg_lock_context()` can be used to acquire a lock for exclusive access to resources which are shared between connection of threads. The lock is context wide. The lock must be released with a call to [`mg_unlock_context()`](mg_unlock_context.md).
### See Also
* [`mg_lock_connection();`](mg_lock_connection.md)
* [`mg_unlock_connection();`](mg_unlock_connection.md)
* [`mg_unlock_context();`](mg_unlock_context.md)
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