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# MMutexLock Class Reference
OpenMaya - API module for common classes

This reference page is linked to from the following overview topics: スレッド化と Maya, API クラスとプラグイン.

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## Detailed Description

Methods for managing locks on threads created with MThreadPool and MThreadAsync.

Mutex lock class to be used with threads created by MThreadPool and MThreadAsync.

Examples:

  cvColorShader.cpp, and threadTestWithLocksCmd.cpp.

`#include <MMutexLock.h>`

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## Public Member Functions
| MMutexLock ()
| Create new mutex object.
| ~MMutexLock ()
| Calling the destructor on a locked mutex does not unlock the mutex.
void | lock ()
| Create a lock.
void | unlock ()
| Release the current lock on a mutex.
bool | tryLock ()
| Attempt to lock the mutex. Search for all occurrences

## Constructor & Destructor Documentation

MMutexLock | ( |  | ) |

Create new mutex object.

The object is created unlocked.

~MMutexLock | ( |  | ) |

Calling the destructor on a locked mutex does not unlock the mutex.

That must be done by calling unlock() before calling the destructor.

## Member Function Documentation

void lock | ( |  | ) |

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Create a lock.

If the mutex is available it is locked immediately. If it is already locked by another thread, this function waits until the other thread has unlocked it, then creates the lock.

bool tryLock | ( |  | ) |

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Attempt to lock the mutex.

If the mutex is already locked by another thread, the function returns right away.

Returns:
  - true lock was obtained
  - false lock was not obtained

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