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AIX Version 4.3 General Programming Concepts: Writing and Debugging Programs

List of Memory Manipulation Services

The memory functions operate on arrays of characters in memory called memory areas. These subroutines enable you to:

You do not need to specify any special flag to the compiler in order to use the memory functions. However, you must include the header file for these functions in your program. To include the header file, use the following statement:

#include <memory.h>

The following memory services are provided:

compare_and_swap Compares and swaps data
fetch_and_add Updates a single word variable atomically
fetch_and_and or fetch_and_or Set or clear bits in a single word variable atomically
malloc, free, realloc, calloc, mallopt, mallinfo, or alloca Allocate memory
memccpy, memchr, memcmp, memcpy, memset or memmove Perform memory operations.
moncontrol Starts and stops execution profiling after initialization by the monitor subroutine
monitor Starts and stops execution profiling using data areas defined in the function parameters
monstartup Starts and stops execution profiling using default-sized data areas
msem_init Initializes a semaphore in a mapped file or shared memory region
msem_lock Locks a semaphore
msem_remove Removes a semaphore
msem_unlock Unlocks a semaphore
msleep Puts a process to sleep when a semaphore is busy
mwakeup Wakes up a process that is waiting on a semaphore
disclaim Disclaims the content of a memory address range
ftok Generates a standard interprocess communication key
getpagesize Gets the system page size
psdanger Defines the amount of free paging space available
shmat Attaches a shared memory segment or a mapped file to the current process
shmctl Controls shared memory operations
shmdt Detaches a shared memory segment
shmget Gets a shared memory segment
swapon Activates paging or swapping to a designated block device
swapqry Returns device status

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