[rtems commit] libc: Reimplement posix_memlign()
Sebastian Huber
sebh at rtems.org
Thu May 6 13:14:56 UTC 2021
Module: rtems
Branch: master
Commit: 5580b93f367e057ef0184231e7619beea4ae3734
Changeset: http://git.rtems.org/rtems/commit/?id=5580b93f367e057ef0184231e7619beea4ae3734
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Wed May 5 08:46:24 2021 +0200
libc: Reimplement posix_memlign()
Move all error checks into posix_memalign() so that the returned memory
pointer is set to NULL under all error conditions except
memptr == NULL.
Use parameter names of POSIX documentation.
---
cpukit/libcsupport/src/posix_memalign.c | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/cpukit/libcsupport/src/posix_memalign.c b/cpukit/libcsupport/src/posix_memalign.c
index b2bef3e..316ed73 100644
--- a/cpukit/libcsupport/src/posix_memalign.c
+++ b/cpukit/libcsupport/src/posix_memalign.c
@@ -24,18 +24,33 @@
#include <errno.h>
int posix_memalign(
- void **pointer,
+ void **memptr,
size_t alignment,
size_t size
)
{
- if (((alignment - 1) & alignment) != 0 || (alignment < sizeof(void *)))
+ RTEMS_OBFUSCATE_VARIABLE( memptr );
+
+ if ( memptr == NULL ) {
+ return EINVAL;
+ }
+
+ *memptr = NULL;
+
+ if ( alignment < sizeof( void * ) ) {
return EINVAL;
+ }
+
+ if ( ( ( alignment - 1 ) & alignment ) != 0 ) {
+ return EINVAL;
+ }
+
+ *memptr = rtems_heap_allocate_aligned_with_boundary( size, alignment, 0 );
+
+ if ( *memptr == NULL ) {
+ return ENOMEM;
+ }
- /*
- * rtems_memalign does all of the error checking work EXCEPT
- * for adding restrictionso on the alignment.
- */
- return rtems_memalign( pointer, alignment, size );
+ return 0;
}
#endif
More information about the vc
mailing list