49b9165251
. test74 for mmap functionality . vm: add a mem_file memory type that specifies an mmap()ped memory range, backed by a file . add fdref, an object that keeps track of FD references within VM per process and so knows how to de-duplicate the use of FD's by various mmap()ped ranges; there can be many more than there can be FD's . turned off for now, enable with 'filemap=1' as boot option Change-Id: I640b1126cdaa522a0560301cf6732b7661555672
114 lines
2.0 KiB
C
114 lines
2.0 KiB
C
/* Test 74 - mmap functionality test.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/ioc_memory.h>
|
|
#include <stdio.h>
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "common.h"
|
|
#include "testcache.h"
|
|
|
|
int
|
|
dowriteblock(int b, int blocksize, u32_t seed, char *data)
|
|
{
|
|
u64_t offset;
|
|
int fd;
|
|
|
|
get_fd_offset(b, blocksize, &offset, &fd);
|
|
|
|
if(pwrite(fd, data, blocksize, offset) < blocksize) {
|
|
perror("pwrite");
|
|
return -1;
|
|
}
|
|
|
|
return blocksize;
|
|
}
|
|
|
|
int
|
|
readblock(int b, int blocksize, u32_t seed, char *data)
|
|
{
|
|
u64_t offset;
|
|
int fd;
|
|
char *mmapdata;
|
|
int pread_first = random() % 2;
|
|
|
|
get_fd_offset(b, blocksize, &offset, &fd);
|
|
|
|
if(pread_first) {
|
|
if(pread(fd, data, blocksize, offset) < blocksize) {
|
|
perror("pread");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if((mmapdata = minix_mmap(NULL, blocksize, PROT_READ, MAP_PRIVATE | MAP_FILE,
|
|
fd, offset)) == MAP_FAILED) {
|
|
perror("mmap");
|
|
return -1;
|
|
}
|
|
|
|
if(!pread_first) {
|
|
if(pread(fd, data, blocksize, offset) < blocksize) {
|
|
perror("pread");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if(memcmp(mmapdata, data, blocksize)) {
|
|
fprintf(stderr, "readblock: mmap, pread mismatch\n");
|
|
return -1;
|
|
}
|
|
|
|
if(minix_munmap(mmapdata, blocksize) < 0) {
|
|
perror("munmap");
|
|
return -1;
|
|
}
|
|
|
|
return blocksize;
|
|
}
|
|
|
|
void testend(void) { }
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int iter = 2;
|
|
|
|
start(74);
|
|
|
|
makefiles(MAXFILES);
|
|
|
|
cachequiet(!bigflag);
|
|
if(bigflag) iter = 3;
|
|
|
|
/* Try various combinations working set sizes
|
|
* and block sizes in order to specifically
|
|
* target the primary cache, then primary+secondary
|
|
* cache, then primary+secondary cache+secondary
|
|
* cache eviction.
|
|
*/
|
|
|
|
if(dotest(PAGE_SIZE, 100, iter)) e(5);
|
|
if(dotest(PAGE_SIZE*2, 100, iter)) e(2);
|
|
if(dotest(PAGE_SIZE*3, 100, iter)) e(3);
|
|
if(dotest(PAGE_SIZE, 20000, iter)) e(5);
|
|
|
|
if(bigflag) {
|
|
u32_t totalmem, freemem, cachedmem;
|
|
if(dotest(PAGE_SIZE, 150000, iter)) e(5);
|
|
getmem(&totalmem, &freemem, &cachedmem);
|
|
if(dotest(PAGE_SIZE, totalmem*1.5, iter)) e(6);
|
|
}
|
|
|
|
quit();
|
|
|
|
return 0;
|
|
}
|
|
|