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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
Utilities & Libraries
C Library Reference
M
munlockall()
Unlock a process's address space

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX Tool Suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running the QNX OS 8.0.
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        Return the greater of two numbers
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        Convert a multibyte character (UTF-8) into a wide character (UTF-16 or UTF-32)
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        Convert a multibyte character into a wide character (restartable)
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        Determine the status of the conversion object used for restartable mb*() functions
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        Convert a multibyte-character string into a wide-character string (restartable)
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        Convert a multibyte-character string into a wide-character string
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        Convert a multibyte character into a wide character
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        Lock a range of process address space in physical memory
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        Lock all of a process's address space
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        Gain access to a device's registers
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        Map a device's physical memory into a process's address space
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        Create a virtual mapping in the address space of another process
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        Break a number into integral and fractional parts
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        Mount a filesystem
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        Strip off common mount arguments
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        Change memory protection
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        Receive a message from a message queue with a timeout measured against a specific clock
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        Send a message to a message queue with a timeout measured against a specific clock
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        Close a message queue
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        Get a message queue's attributes
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        Ask to be notified when there's a message in the queue
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        Open a message queue
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        Receive a message from a queue
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        Send a message to a queue
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        Set a queue's attributes
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        Receive a message from a message queue
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        Send a message to a message queue
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        Remove a queue
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        Generate a pseudo-random signed long integer
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        Information about a message
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        Resume processing of a message
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        Deliver an event through a channel
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        Unblock a client and set its error code
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        Get additional information about a message
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        Pause the processing of a message
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        Close a message queue connection
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        Perform message queue operations
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        Associate a client with a kernel message queue
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        Receive a message on an open queue
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        Send a message on an open queue
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        Read data from a message
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        Read data from a message
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        Wait for a message or pulse on a channel
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        Receive a pulse on a channel
      - MsgReceivev(), MsgReceivev_r()
        Wait for a message or pulse on a channel
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        Register a secure event
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        Reply with a message
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        Reply with a message
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        Send a message to a channel
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        Send a message to a channel (non-cancellation point)
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        Send a pulse to a process
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        Send a pulse (containing a pointer) to a process
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        Send a message to a channel
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        Send a message to a channel (non-cancellation point)
      - MsgSendv(), MsgSendv_r()
        Send a message to a channel
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        Send a message to a channel (non-cancellation point)
      - MsgSendvs(), MsgSendvs_r()
        Send a message to a channel
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        Send a message to a channel (non-cancellation point)
      - MsgUnregisterEvent(), MsgUnregisterEvent_r()
        Unregister a secure event
      - MsgVerifyEvent(), MsgVerifyEvent_r()
        Check the validity of a receive ID and an event configuration
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        Write a reply
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        Write a reply
      - msync()
        Synchronize memory with physical storage
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        Destroy a mutex
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        Initialize a mutex
      - mtx_lock()
        Lock a mutex
      - mtx_timedlock()
        Lock a mutex, with a time limit
      - mtx_trylock()
        Attempt to lock a mutex
      - mtx_unlock()
        Unlock a mutex
      - munlock()
        Unlock the address space of a process
      - munlockall()
        Unlock a process's address space
      - munmap()
        Unmap previously mapped addresses
      - munmap_device_io()
        Free access to a device's registers
      - munmap_device_memory()
        Unmap previously mapped addresses
      - munmap_flags()
        Unmap previously mapped addresses, exercising more control than possible with munmap()
      - munmap_peer()
        Unmap a part of the virtual address space in another process
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  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
- Migrating to QNX OS 8.0
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This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

munlockall()

QNX SDP8.0C Library ReferenceAPIDeveloper

Unlock a process's address space

Synopsis:

#include <sys/mman.h>

int munlockall( void );

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

Note:

In this QNX OS release, all memory is locked for the entire duration of the process, so this function does nothing.

The munlockall() function unlocks all of the currently mapped pages of the calling process's address space. You can lock memory by calling mlock() or mlockall().

Returns:

In this release, this function always returns 0 (success).

Classification:

POSIX 1003.1 ML


Safety:
Cancellation point	No
Signal handler	No
Thread	Yes

Page updated: August 09, 2024