mirror of
https://github.com/azure-rtos/threadx
synced 2025-02-06 08:08:27 +08:00
101 lines
5.5 KiB
C
101 lines
5.5 KiB
C
/**************************************************************************/
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/* */
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/* Copyright (c) Microsoft Corporation. All rights reserved. */
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/* */
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/* This software is licensed under the Microsoft Software License */
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/* Terms for Microsoft Azure RTOS. Full text of the license can be */
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/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
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/* and in the root directory of this software. */
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/* */
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/**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** POSIX wrapper for THREADX */
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/** */
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/** */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/* Include necessary system files. */
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#include "tx_api.h" /* Threadx API */
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#include "pthread.h" /* Posix API */
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#include "px_int.h" /* Posix helper functions */
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* posix_memory_allocate PORTABLE C */
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/* 6.1.7 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This function attempts to obtain the specified amount of memory */
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/* from the POSIX heap. */
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/* */
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/* INPUT */
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/* */
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/* size Number of bytes in the pool */
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/* memory_ptr Pointer to memory ptr variable*/
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/* */
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/* OUTPUT */
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/* */
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/* ERROR If error occurs */
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/* retval Return value */
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/* */
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/* CALLS */
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/* */
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/* tx_byte_allocate Allocate from the pool */
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/* posix_internal_error Generic posix error */
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/* */
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/* CALLED BY */
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/* */
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/* POSIX internal code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
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/* */
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/**************************************************************************/
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INT posix_memory_allocate(ULONG size, VOID **memory_ptr)
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{
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INT retval;
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/* Init in case we fail. */
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*memory_ptr = (VOID *)0;
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/* Force all alignments to long word boundaries to be safe. */
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if (size & 0x03)
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{
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/* Bump size up to next 4 byte boundary. */
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size = ((size + 0x03) & ~0x03);
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}
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/* Attempt to allocate the desired memory from the POSIX heap.
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Do not wait - if memory isn't available, flag an error. */
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retval = tx_byte_allocate((TX_BYTE_POOL *)&posix_heap_byte_pool, memory_ptr,
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size, TX_NO_WAIT);
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/* Make sure the memory was obtained successfully. */
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if (retval)
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{
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/* Error obtaining memory. */
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posix_internal_error(555);
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/* return error. */
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return(ERROR);
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}
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/* Return to caller. */
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return(retval);
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}
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