/**
* test_two_shares - same as test_base, but with two sources and two consumers
* Description:
* Two consumers of two different apids.
* Return Values:
* Success: 0
* Failure: -2
*/
int test_two_shares(test_args *xpmem_args)
{
xpmem_segid_t segid[2];
xpmem_apid_t apid[2];
int i, ret=0, *data[2];
char *tmp;
tmp = xpmem_args->share;
segid[0] = strtol(tmp, NULL, 16);
tmp += strlen(tmp) + 1;
segid[1] = strtol(tmp, NULL, 16);
data[0] = attach_segid(segid[0], &apid[0]);
data[1] = attach_segid(segid[1], &apid[1]);
if (data[0] == (void *)-1 || data[1] == (void *)-1) {
perror("xpmem_attach");
return -2;
}
printf("xpmem_proc2: mypid = %d\n", getpid());
printf("xpmem_proc2: segid[0] = %llx\n", segid[0]);
printf("xpmem_proc2: segid[1] = %llx\n", segid[1]);
printf("xpmem_proc2: data[0] attached at %p\n", data[0]);
printf("xpmem_proc2: data[1] attached at %p\n", data[1]);
printf("xpmem_proc2: adding 1 to all elems using %p\n", data[0]);
printf("xpmem_proc2: adding 1 to all elems using %p\n\n", data[1]);
for (i = 0; i < SHARE_INT_SIZE; i++) {
if (*(data[0] + i) != i) {
printf("xpmem_proc2: ***mismatch at %d: expected %d "
"got %d\n", i, i, *(data[0] + i));
ret = -2;
}
if (*(data[1] + i) != i) {
printf("xpmem_proc2: ***mismatch at %d: expected %d "
"got %d\n", i, i, *(data[1] + i));
ret = -2;
}
*(data[0] + i) += 1;
*(data[1] + i) += 1;
}
xpmem_detach(data[0]);
xpmem_detach(data[1]);
xpmem_release(apid[0]);
xpmem_release(apid[1]);
return ret;
}
/**
* test_base - a simple test to share and attach
* Description:
* Creates a share (initialized to a random value), calls a second process
* to attach to the shared address and increment its value.
* Return Values:
* Success: 0
* Failure: -2
*/
int test_base(test_args *xpmem_args)
{
xpmem_segid_t segid;
xpmem_apid_t apid;
int i, ret=0, *data;
segid = strtol(xpmem_args->share, NULL, 16);
data = attach_segid(segid, &apid);
if (data == (void *)-1) {
perror("xpmem_attach");
return -2;
}
printf("xpmem_proc2: mypid = %d\n", getpid());
printf("xpmem_proc2: segid = %llx\n", segid);
printf("xpmem_proc2: attached at %p\n", data);
printf("xpmem_proc2: adding 1 to all elems\n\n");
for (i = 0; i < SHARE_INT_SIZE; i++) {
if (*(data + i) != i) {
printf("xpmem_proc2: ***mismatch at %d: expected %d "
"got %d\n", i, i, *(data + i));
ret = -2;
}
*(data + i) += 1;
}
xpmem_detach(data);
xpmem_release(apid);
return ret;
}
static ucs_status_t uct_xpmem_detach(uct_mm_remote_seg_t *mm_desc)
{
xpmem_apid_t apid = mm_desc->cookie;
void *address;
int ret;
address = ucs_align_down_pow2_ptr(mm_desc->address, ucs_get_page_size());
ucs_trace("xpmem detaching address %p", address);
ret = xpmem_detach(address);
if (ret < 0) {
ucs_error("Failed to xpmem_detach: %m");
return UCS_ERR_IO_ERROR;
}
VALGRIND_MAKE_MEM_UNDEFINED(mm_desc->address, mm_desc->length);
ucs_trace("xpmem releasing segment apid 0x%llx", apid);
ret = xpmem_release(apid);
if (ret < 0) {
ucs_error("Failed to release xpmem segment apid 0x%llx", apid);
return UCS_ERR_IO_ERROR;
}
return UCS_OK;
}
void mca_btl_vader_xpmem_cleanup_endpoint (struct mca_btl_base_endpoint_t *ep)
{
/* clean out the registration cache */
(void) mca_rcache_base_vma_iterate (mca_btl_vader_component.vma_module,
NULL, (size_t) -1,
mca_btl_vader_endpoint_xpmem_rcache_cleanup,
(void *) ep);
if (ep->segment_base) {
xpmem_release (ep->segment_data.xpmem.apid);
ep->segment_data.xpmem.apid = 0;
}
}
int
shmem_transport_xpmem_fini(void)
{
int i, peer_num;
if (NULL != shmem_transport_xpmem_peers) {
for (i = 0 ; i < shmem_internal_num_pes; ++i) {
peer_num = SHMEM_GET_RANK_SAME_NODE(i);
if (-1 == peer_num) continue;
if (shmem_internal_my_pe == i) continue;
if (NULL != shmem_transport_xpmem_peers[peer_num].data_ptr) {
xpmem_detach(shmem_transport_xpmem_peers[peer_num].data_attach_ptr);
}
if (0 != shmem_transport_xpmem_peers[peer_num].data_apid) {
xpmem_release(shmem_transport_xpmem_peers[peer_num].data_apid);
}
if (NULL != shmem_transport_xpmem_peers[peer_num].heap_ptr) {
xpmem_detach(shmem_transport_xpmem_peers[peer_num].heap_attach_ptr);
}
if (0 != shmem_transport_xpmem_peers[peer_num].heap_apid) {
xpmem_release(shmem_transport_xpmem_peers[peer_num].heap_apid);
}
}
free(shmem_transport_xpmem_peers);
}
if (0 != my_info.data_seg) {
xpmem_remove(my_info.data_seg);
}
if (0 != my_info.heap_seg) {
xpmem_remove(my_info.heap_seg);
}
return 0;
}
static void mca_btl_vader_endpoint_destructor (mca_btl_vader_endpoint_t *ep)
{
OBJ_DESTRUCT(&ep->pending_frags);
#if OPAL_BTL_VADER_HAVE_XPMEM
if (MCA_BTL_VADER_XPMEM == mca_btl_vader_component.single_copy_mechanism) {
if (ep->segment_data.xpmem.rcache) {
/* clean out the registration cache */
const int nregs = 100;
mca_mpool_base_registration_t *regs[nregs];
int reg_cnt;
do {
reg_cnt = ep->segment_data.xpmem.rcache->rcache_find_all(ep->segment_data.xpmem.rcache, 0, (size_t)-1,
regs, nregs);
for (int i = 0 ; i < reg_cnt ; ++i) {
/* otherwise dereg will fail on assert */
regs[i]->ref_count = 0;
OBJ_RELEASE(regs[i]);
}
} while (reg_cnt == nregs);
ep->segment_data.xpmem.rcache = NULL;
}
if (ep->segment_base) {
xpmem_release (ep->segment_data.xpmem.apid);
ep->segment_data.xpmem.apid = 0;
}
} else
#endif
if (ep->segment_data.other.seg_ds) {
opal_shmem_ds_t seg_ds;
/* opal_shmem_segment_detach expects a opal_shmem_ds_t and will
* stomp past the end of the seg_ds if it is too small (which
* ep->seg_ds probably is) */
memcpy (&seg_ds, ep->segment_data.other.seg_ds, opal_shmem_sizeof_shmem_ds (ep->segment_data.other.seg_ds));
free (ep->segment_data.other.seg_ds);
ep->segment_data.other.seg_ds = NULL;
/* disconnect from the peer's segment */
opal_shmem_segment_detach (&seg_ds);
}
ep->fbox_in.buffer = ep->fbox_out.buffer = NULL;
ep->segment_base = NULL;
ep->fifo = NULL;
}
/**
* test_fork - test if forks are handled properly
* Description:
* Called by xpmem_master, but do nothing. xpmem_proc1 does the fork.
* Return Values:
* Success: 0
* Failure: -2
*/
int test_fork(test_args *xpmem_args)
{
xpmem_segid_t segid;
xpmem_apid_t apid;
struct xpmem_addr addr;
int i, ret=0, *data;
segid = strtol(xpmem_args->share, NULL, 16);
apid = xpmem_get(segid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
addr.apid = apid;
addr.offset = PAGE_SIZE;
data = (int *)xpmem_attach(addr, PAGE_SIZE, NULL);
if (data == (void *)-1) {
perror("xpmem_attach");
return -2;
}
printf("xpmem_proc2: mypid = %d\n", getpid());
printf("xpmem_proc2: segid = %llx\n", segid);
printf("xpmem_proc2: attached at %p\n", data);
printf("xpmem_proc2: reading to pin pages\n");
for (i = 0; i < PAGE_INT_SIZE; i++) {
if (*(data + i) != PAGE_INT_SIZE + i) {
printf("xpmem_proc2: ***mismatch at %d: expected %lu "
"got %d\n", i, PAGE_INT_SIZE + i, *(data + i));
ret = -2;
}
}
/* Now wait for xpmem_proc1 to invoke COW */
printf("xpmem_proc2: waiting for COW...\n\n");
while (xpmem_args->share[COW_LOCK_INDEX] == 0) {
xpmem_args->share[COW_LOCK_INDEX] = 1;
}
sleep(1);
printf("xpmem_proc2: adding 1 to all elems\n\n");
for (i = 0; i < PAGE_INT_SIZE; i++)
*(data + i) += 1;
xpmem_detach(data);
xpmem_release(apid);
return ret;
}
static ucs_status_t uct_xpmem_attach(uct_mm_id_t mmid, size_t length,
void *remote_address, void **local_address,
uint64_t *cookie, const char *path)
{
struct xpmem_addr addr;
ucs_status_t status;
ptrdiff_t offset;
void *address;
addr.offset = 0;
addr.apid = xpmem_get(mmid, XPMEM_RDWR, XPMEM_PERMIT_MODE, NULL);
VALGRIND_MAKE_MEM_DEFINED(&addr.apid, sizeof(addr.apid));
if (addr.apid < 0) {
ucs_error("Failed to acquire xpmem segment 0x%"PRIx64": %m", mmid);
status = UCS_ERR_IO_ERROR;
goto err_xget;
}
ucs_trace("xpmem acquired segment 0x%"PRIx64" apid 0x%llx remote_address %p",
mmid, addr.apid, remote_address);
offset = ((uintptr_t)remote_address) % ucs_get_page_size();
address = xpmem_attach(addr, length + offset, NULL);
VALGRIND_MAKE_MEM_DEFINED(&address, sizeof(address));
if (address == MAP_FAILED) {
ucs_error("Failed to attach xpmem segment 0x%"PRIx64" apid 0x%llx "
"with length %zu: %m", mmid, addr.apid, length);
status = UCS_ERR_IO_ERROR;
goto err_xattach;
}
VALGRIND_MAKE_MEM_DEFINED(address + offset, length);
*local_address = address + offset;
*cookie = addr.apid;
ucs_trace("xpmem attached segment 0x%"PRIx64" apid 0x%llx %p..%p at %p (+%zd)",
mmid, addr.apid, remote_address, remote_address + length, address, offset);
return UCS_OK;
err_xattach:
xpmem_release(addr.apid);
err_xget:
return status;
}
/*
* User ioctl to the XPMEM driver. Only 64-bit user applications are
* supported.
*/
static long
xpmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
switch (cmd) {
case XPMEM_CMD_VERSION: {
return XPMEM_CURRENT_VERSION;
}
case XPMEM_CMD_MAKE: {
struct xpmem_cmd_make make_info;
xpmem_segid_t segid;
if (copy_from_user(&make_info, (void __user *)arg,
sizeof(struct xpmem_cmd_make)))
return -EFAULT;
ret = xpmem_make(make_info.vaddr, make_info.size,
make_info.permit_type,
(void *)make_info.permit_value, &segid);
if (ret != 0)
return ret;
if (put_user(segid,
&((struct xpmem_cmd_make __user *)arg)->segid)) {
(void)xpmem_remove(segid);
return -EFAULT;
}
return 0;
}
case XPMEM_CMD_REMOVE: {
struct xpmem_cmd_remove remove_info;
if (copy_from_user(&remove_info, (void __user *)arg,
sizeof(struct xpmem_cmd_remove)))
return -EFAULT;
return xpmem_remove(remove_info.segid);
}
case XPMEM_CMD_GET: {
struct xpmem_cmd_get get_info;
xpmem_apid_t apid;
if (copy_from_user(&get_info, (void __user *)arg,
sizeof(struct xpmem_cmd_get)))
return -EFAULT;
ret = xpmem_get(get_info.segid, get_info.flags,
get_info.permit_type,
(void *)get_info.permit_value, &apid);
if (ret != 0)
return ret;
if (put_user(apid,
&((struct xpmem_cmd_get __user *)arg)->apid)) {
(void)xpmem_release(apid);
return -EFAULT;
}
return 0;
}
case XPMEM_CMD_RELEASE: {
struct xpmem_cmd_release release_info;
if (copy_from_user(&release_info, (void __user *)arg,
sizeof(struct xpmem_cmd_release)))
return -EFAULT;
return xpmem_release(release_info.apid);
}
case XPMEM_CMD_ATTACH: {
struct xpmem_cmd_attach attach_info;
u64 at_vaddr;
if (copy_from_user(&attach_info, (void __user *)arg,
sizeof(struct xpmem_cmd_attach)))
return -EFAULT;
ret = xpmem_attach(file, attach_info.apid, attach_info.offset,
attach_info.size, attach_info.vaddr,
attach_info.fd, attach_info.flags,
&at_vaddr);
if (ret != 0)
return ret;
if (put_user(at_vaddr,
&((struct xpmem_cmd_attach __user *)arg)->vaddr)) {
(void)xpmem_detach(at_vaddr);
return -EFAULT;
}
return 0;
}
case XPMEM_CMD_DETACH: {
struct xpmem_cmd_detach detach_info;
if (copy_from_user(&detach_info, (void __user *)arg,
sizeof(struct xpmem_cmd_detach)))
return -EFAULT;
return xpmem_detach(detach_info.vaddr);
}
case XPMEM_CMD_FORK_BEGIN: {
return xpmem_fork_begin();
}
case XPMEM_CMD_FORK_END: {
return xpmem_fork_end();
}
default:
break;
}
return -ENOIOCTLCMD;
}
