185 lines
3.4 KiB
C
185 lines
3.4 KiB
C
/* testvm - service-started code that goes with test73.o
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*/
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#include <minix/drivers.h>
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#include <minix/chardriver.h>
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#include <minix/ds.h>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include "testvm.h"
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#include "common.h"
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#include "testcache.h"
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#define MYMAJOR 40 /* doesn't really matter, shouldn't be NO_DEV though */
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#define MYDEV makedev(MYMAJOR, 1)
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static char *pipefilename = NULL, *progname;
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int pipefd = -1;
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int memfd;
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static char *bdata = NULL;
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int dowriteblock(int b, int blocksize, u32_t seed, char *block)
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{
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int r;
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char *bdata;
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int mustset = 0;
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u64_t dev_off = (u64_t) b * blocksize;
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if((bdata = vm_map_cacheblock(MYDEV, dev_off,
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VMC_NO_INODE, 0, NULL, blocksize)) == MAP_FAILED) {
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if((bdata = mmap(0, blocksize,
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PROT_READ|PROT_WRITE, MAP_ANON, -1, 0)) == MAP_FAILED) {
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printf("mmap failed\n");
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exit(1);
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}
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mustset = 1;
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}
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memcpy(bdata, block, blocksize);
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if(mustset && (r=vm_set_cacheblock(bdata, MYDEV, dev_off,
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VMC_NO_INODE, 0, NULL, blocksize)) != OK) {
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printf("dowriteblock: vm_set_cacheblock failed %d\n", r);
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exit(1);
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}
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if(munmap(bdata, blocksize) < 0) {
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printf("dowriteblock: munmap failed %d\n", r);
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exit(1);
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}
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return blocksize;
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}
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int readblock(int b, int blocksize, u32_t seed, char *block)
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{
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char *bdata;
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u64_t dev_off = (u64_t) b * blocksize;
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if((bdata = vm_map_cacheblock(MYDEV, dev_off,
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VMC_NO_INODE, 0, NULL, blocksize)) == MAP_FAILED) {
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return OK_BLOCK_GONE;
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}
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memcpy(block, bdata, blocksize);
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if(munmap(bdata, blocksize) < 0) {
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printf("dowriteblock: munmap failed\n");
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exit(1);
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}
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return blocksize;
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}
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void testend(void) { }
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static void
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writepipe(struct info *i)
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{
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if(write(pipefd, i, sizeof(*i)) != sizeof(*i)) {
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printf("%s: pipe write failed\n", progname);
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exit(1);
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}
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}
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static int
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testinit(void)
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{
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struct stat st;
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int attempts = 0;
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for(attempts = 0; attempts < 5 && pipefd < 0; attempts++) {
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if(attempts > 0) sleep(1);
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pipefd = open(pipefilename, O_WRONLY | O_NONBLOCK);
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}
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if(pipefd < 0) {
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printf("%s: could not open pipe %s, errno %d\n",
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progname, pipefilename, errno);
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exit(1);
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}
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if(fstat(pipefd, &st) < 0) {
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printf("%s: could not fstat pipe %s\n", progname, pipefilename);
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exit(1);
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}
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if(!(st.st_mode & I_NAMED_PIPE)) {
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printf("%s: file %s is not a pipe\n", progname, pipefilename);
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exit(1);
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}
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return OK;
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}
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static int
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sef_cb_init(int type, sef_init_info_t *UNUSED(info))
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{
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return OK;
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}
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static void
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init(void)
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{
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/* SEF init */
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sef_setcb_init_fresh(sef_cb_init);
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sef_setcb_init_lu(sef_cb_init);
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sef_setcb_init_restart(sef_cb_init);
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sef_startup();
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}
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int
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main(int argc, char *argv[])
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{
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struct info info;
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int big;
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u32_t totalmem, freemem, cachedmem;
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progname = argv[0];
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if(argc < 2) { printf("no args\n"); return 1; }
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pipefilename=argv[1];
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big = !!strstr(pipefilename, "big");
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init();
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info.result = time(NULL);
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if(testinit() != OK) { printf("%s: testinit failed\n", progname); return 1; }
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cachequiet(!big);
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if(!(bdata = alloc_contig(PAGE_SIZE, 0, NULL))) {
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printf("could not allocate block\n");
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exit(1);
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}
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if(dotest(PAGE_SIZE, 10, 3)) { e(11); exit(1); }
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if(dotest(PAGE_SIZE, 1000, 3)) { e(11); exit(1); }
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if(dotest(PAGE_SIZE, 50000, 3)) { e(11); exit(1); }
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if(big) {
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getmem(&totalmem, &freemem, &cachedmem);
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if(dotest(PAGE_SIZE, totalmem*1.5, 3)) { e(11); exit(1); }
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}
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info.result = 0;
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writepipe(&info);
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vm_clear_cache(MYDEV);
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return 0;
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}
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