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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** POSIX wrapper for THREADX */
/** */
/** */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#include "tx_api.h" /* Threadx API */
#include "pthread.h" /* Posix API */
#include "px_int.h" /* Posix helper functions */
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* posix_memory_allocate PORTABLE C */
/* 6.1.7 */
/* AUTHOR */
/* */
/* William E. Lamie, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function attempts to obtain the specified amount of memory */
/* from the POSIX heap. */
/* */
/* INPUT */
/* */
/* size Number of bytes in the pool */
/* memory_ptr Pointer to memory ptr variable*/
/* */
/* OUTPUT */
/* */
/* ERROR If error occurs */
/* retval Return value */
/* */
/* CALLS */
/* */
/* tx_byte_allocate Allocate from the pool */
/* posix_internal_error Generic posix error */
/* */
/* CALLED BY */
/* */
/* POSIX internal code */
/* */
/**************************************************************************/
INT posix_memory_allocate(ULONG size, VOID **memory_ptr)
{
INT retval;
/* Init in case we fail. */
*memory_ptr = (VOID *)0;
/* Force all alignments to long word boundaries to be safe. */
if (size & 0x03)
{
/* Bump size up to next 4 byte boundary. */
size = ((size + 0x03) & ~0x03);
}
/* Attempt to allocate the desired memory from the POSIX heap.
Do not wait - if memory isn't available, flag an error. */
retval = tx_byte_allocate((TX_BYTE_POOL *)&posix_heap_byte_pool, memory_ptr,
size, TX_NO_WAIT);
/* Make sure the memory was obtained successfully. */
if (retval)
{
/* Error obtaining memory. */
posix_internal_error(555);
/* return error. */
return(ERROR);
}
/* Return to caller. */
return(retval);
}
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