d2db639853
1. try to use as large page as possible on attach 2. pre-map resident remote pages on attach Change-Id: I5580682a4199e94085a9bad9ce3958a0f14cdcea
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
#include <unistd.h>
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#include <stdio.h>
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#include <sys/mman.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <xpmem.h>
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#include <libgen.h>
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#include "util2.h"
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#define BUFF_SIZE 1024
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int main(int argc, char **argv)
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{
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void *mem, *attach;
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int rc = 0;
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int status;
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pid_t pid;
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xpmem_segid_t segid;
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xpmem_apid_t apid;
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struct xpmem_addr addr;
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key_t key = ftok(argv[0], 0);
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int shmid;
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printf("*** %s start ***\n", basename(argv[0]));
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shmid = shmget(key, SZ_MEM, IPC_CREAT | 0660);
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CHKANDJUMP(shmid == -1, "shmget");
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mem = mmap(0, SZ_MEM, PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE |
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MAP_HUGETLB | (LARGE_PAGE_SHIFT << MAP_HUGE_SHIFT), -1, 0);
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CHKANDJUMP(mem == NULL, "mmap");
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memset(mem, 0, SZ_MEM);
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fflush(0);
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pid = fork();
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CHKANDJUMP(pid == -1, "fork failed\n");
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if (pid == 0) {
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/* Child process */
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void *shm = shmat(shmid, NULL, 0);
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CHKANDJUMP(shm == (void *)-1, "shmat in child");
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while ((segid = *(xpmem_segid_t *)shm) == 0) {
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};
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rc = shmdt(shm);
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CHKANDJUMP(rc == -1, "shmdt");
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rc = xpmem_init();
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CHKANDJUMP(rc != 0, "xpmem_init in child");
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apid = xpmem_get(segid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
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OKNG(apid == -1, "xpmem_get in child");
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addr.apid = apid;
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addr.offset = 0;
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attach = xpmem_attach(addr, SZ_MEM, NULL);
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OKNG(attach == (void *)-1, "xpmem_attach in child");
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*((unsigned long *)attach) = TEST_VAL;
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rc = xpmem_detach(attach);
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OKNG(rc == -1, "xpmem_detach in child");
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fflush(0);
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_exit(0);
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} else {
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/* Parent process */
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void *shm = shmat(shmid, NULL, 0);
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struct shmid_ds buf;
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CHKANDJUMP(shm == (void *)-1, "shmat in parent");
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rc = xpmem_init();
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CHKANDJUMP(rc != 0, "xpmem_init");
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segid = xpmem_make(mem, SZ_MEM, XPMEM_PERMIT_MODE,
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(void *)0666);
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OKNG(segid == -1, "xpmem_make");
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*(xpmem_segid_t *)shm = segid;
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rc = waitpid(pid, &status, 0);
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CHKANDJUMP(rc == -1, "waitpid failed\n");
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OKNG(*((unsigned long *)mem) != TEST_VAL, "validate TEST_VAL");
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rc = shmctl(shmid, IPC_RMID, &buf);
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CHKANDJUMP(rc == -1, "shmctl");
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rc = shmdt(shm);
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CHKANDJUMP(rc == -1, "shmdt");
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rc = xpmem_remove(segid);
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OKNG(rc == -1, "xpmem_remove");
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}
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printf("*** %s PASSED\n\n", basename(argv[0]));
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return 0;
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fn_fail:
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printf("*** %s FAILED\n\n", basename(argv[0]));
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return -1;
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}
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