mpid_mem_alloc.tex

来自「刚才是说明 现在是安装程序在 LINUX环境下进行编程的MPICH安装文件」· TEX 代码 · 共 39 行

\startmanpage
\mantitle{MPID{\tt \char`\_}Mem{\tt \char`\_}alloc}{tex}{10/7/2002}
\manname{MPID{\tt \char`\_}Mem{\tt \char`\_}alloc}
--- Allocate memory suitable for passive target RMA operations 
\subhead{Synopsis}
\startvb\begin{verbatim}
void *MPID_Mem_alloc( size_t size, MPID_Info *info )

\end{verbatim}
\endvb

\subhead{Input Parameter}
\startarg{size }{Number of types to allocate.
}
\startarg{info }{Info object
}
\par
\subhead{Return value}
Pointer to the allocated memory.  If the memory is not available,
returns null.
\par
\subhead{Notes}
This routine is used to implement {\tt MPI{\tt \char`\_}Alloc{\tt \char`\_}mem}.  It is for that reason
that there is no communicator argument.
\par
This memory may {\em only} be freed with {\tt MPID{\tt \char`\_}Mem{\tt \char`\_}free}.
\par
This is a {\em local}, not a collective operation.  It functions more like a
good form of {\tt malloc} than collective shared-memory allocators such as
the {\tt shmalloc} found on SGI systems.
\par
Implementations of this routine may wish to use {\tt MPID{\tt \char`\_}Memory{\tt \char`\_}register}.
However, this routine has slighly different requirements, so a separate
entry point is provided.
\par
\subhead{Module}
Win
\endmanpage