Revert "xpmem: fix mapping of attachment and segment"
This reverts commit a5fcc91656.
Change-Id: If29415369d724391b291939ecce76482138e82f5
This commit is contained in:
Masamichi Takagi
@ -1,162 +0,0 @@
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#include <unistd.h>
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#include <stdlib.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 <libgen.h>
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#include <xpmem.h>
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#include "okng.h"
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#include "util.h"
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#define DEBUG
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#define MAP_HUGE_SHIFT 26
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#define MAGIC_HEAD 0x12345678UL
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#define MAGIC_MIDDLE 0x9abcdef0UL
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#define MAGIC_TAIL 0x87654321UL
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int main(int argc, char **argv)
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{
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int i;
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int ret;
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void *mem;
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void *seg_addr;
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size_t seg_size;
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xpmem_segid_t segid;
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pid_t pid;
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int status;
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int large_pgshift, small_pgshift;
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size_t large_pgsize, small_pgsize;
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if (argc < 3) {
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printf("Err: Too few arguments\n");
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printf("Usage: %s <small_pgshift> <large_pgshift>\n",
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basename(argv[0]));
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printf("\tpgshift : page-shift of head and tail part\n");
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printf("\tpgshift : page-shift of middle part\n");
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return 1;
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}
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small_pgshift = atoi(argv[1]);
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small_pgsize = (1UL << small_pgshift);
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large_pgshift = atoi(argv[2]);
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large_pgsize = (1UL << large_pgshift);
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INTERR(small_pgsize > large_pgsize,
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"small_pgsize (%lx) > large_pgsize (%lx)\n",
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small_pgsize, large_pgsize);
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printf("parent: small_pgsize: 0x%lx\n", small_pgsize);
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printf("parent: large_pgsize: 0x%lx\n", large_pgsize);
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mem = mmap(0, 3 * large_pgsize,
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PROT_READ | PROT_WRITE,
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MAP_ANONYMOUS | MAP_PRIVATE |
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MAP_HUGETLB | (large_pgshift << MAP_HUGE_SHIFT),
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-1, 0);
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INTERR(mem == MAP_FAILED, "anonymous mmap failed\n");
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printf("parent: anonymous: addr: %lx, size: %lx\n",
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(unsigned long)mem, 3 * large_pgsize);
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seg_addr = mem + large_pgsize - 3 * small_pgsize;
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seg_size = 3 * small_pgsize + large_pgsize + 3 * small_pgsize;
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segid = xpmem_make(seg_addr, seg_size,
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XPMEM_PERMIT_MODE, (void *)0666);
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INTERR(segid == -1, "xpmem_make: addr: %lx, size: %lx, error: %s\n",
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(unsigned long)seg_addr, seg_size, strerror(errno));
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fflush(stdout); /* to prevent buffer from getting duplicated */
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pid = fork();
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INTERR(pid == -1, "fork failed\n");
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if (pid == 0) {
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xpmem_apid_t apid;
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struct xpmem_addr xpmem_addr;
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void *head_addr, *middle_addr, *tail_addr;
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void *addr;
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apid = xpmem_get(segid, XPMEM_RDWR,
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XPMEM_PERMIT_MODE, NULL);
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OKNG(apid != -1, "apid: %lx\n", (unsigned long)apid);
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xpmem_addr.apid = apid;
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xpmem_addr.offset = 0;
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INFO("child: attaching...\n");
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head_addr = xpmem_attach(xpmem_addr, seg_size, NULL);
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INTERR(head_addr == (void *)-1,
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"xpmem_attach: size: %lx, error: %s\n",
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seg_size, strerror(errno));
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printf("child: head_addr: %lx\n", (unsigned long)head_addr);
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middle_addr = head_addr + 3 * small_pgsize;
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printf("child: middle_addr: %lx\n", (unsigned long)middle_addr);
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tail_addr = head_addr + 3 * small_pgsize + large_pgsize;
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printf("child: tail_addr: %lx\n", (unsigned long)tail_addr);
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fflush(stdout);
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for (i = 0; i < 3; i++) {
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addr = head_addr + i * small_pgsize;
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*((unsigned long *)addr) = MAGIC_HEAD + i;
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}
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*((unsigned long *)middle_addr) = MAGIC_MIDDLE;
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for (i = 0; i < 3; i++) {
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addr = tail_addr + i * small_pgsize;
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*((unsigned long *)addr) = MAGIC_TAIL + i;
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}
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ret = xpmem_detach(head_addr);
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INTERR(ret == -1, "xpmem_detach failed\n");
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exit(0);
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} else {
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void *head_addr = seg_addr;
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void *middle_addr = seg_addr + 3 * small_pgsize;
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void *tail_addr = seg_addr + 3 * small_pgsize + large_pgsize;
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void *addr;
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INFO("parent: waiting...\n");
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ret = waitpid(pid, &status, 0);
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INFO("parent: children reaped\n");
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INTERR(ret == -1, "waitpid failed\n");
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for (i = 0; i < 3; i++) {
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addr = head_addr + i * small_pgsize;
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OKNG(*((unsigned long *)addr) == MAGIC_HEAD + i,
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"%lx: %lx, expected: %lx\n",
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(unsigned long)addr, *((unsigned long *)addr),
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MAGIC_HEAD + i);
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}
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OKNG(*((unsigned long *)middle_addr) == MAGIC_MIDDLE,
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"%lx: %lx, expected: %lx\n",
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(unsigned long)middle_addr,
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*((unsigned long *)middle_addr),
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MAGIC_MIDDLE);
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for (i = 0; i < 3; i++) {
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addr = tail_addr + i * small_pgsize;
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OKNG(*((unsigned long *)addr) == MAGIC_TAIL + i,
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"%lx: %lx, expected: %lx\n",
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(unsigned long)addr, *((unsigned long *)addr),
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MAGIC_TAIL + i);
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}
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ret = xpmem_remove(segid);
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INTERR(ret == -1, "xpmem_remove failed\n");
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}
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ret = 0;
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out:
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return ret;
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}
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