Notes on High Performance Computing

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MemorySegment sharedObjectName = arena.allocateFrom("my_shared_object");

int shmFD = shm_open(sharedObjectName,

            FcntlH.O_RDWR() | FcntlH.O_CREAT(),

            StatH.S_IRUSR() | StatH.S_IWUSR());

if (shmFD == -1) {

    throw new RuntimeException("shm_open() failed!");

}

Sharing memory between processes with java.lang.foreign and jextract

In this post we explore how jextract and java.lang.foreign allow us to take advantage of OS-specific optimizations like shared memory and short-circuit reads/writes.
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