/*
* pmemobj_root_construct -- returns root object
*/
PMEMoid pmemobj_root_construct(PMEMobjpool *pop, size_t size,
void (*constructor)(PMEMobjpool *pop, void *ptr, void *arg), void *arg)
{
LOG(3, "pop %p size %zu constructor %p args %p", pop, size, constructor,
arg);
if (size > PMEMOBJ_MAX_ALLOC_SIZE) {
ERR("requested size too large");
errno = ENOMEM;
return OID_NULL;
}
PMEMoid root;
pmemobj_mutex_lock(pop, &pop->rootlock);
if (pop->store->root.head.pe_first.off == 0)
/* root object list is empty */
obj_alloc_root(pop, pop->store, size, constructor, arg);
else {
size_t old_size = pmemobj_root_size(pop);
if (size > old_size)
if (obj_realloc_root(pop, pop->store, size, old_size,
constructor, arg)) {
pmemobj_mutex_unlock(pop, &pop->rootlock);
LOG(2, "obj_realloc_root failed");
return OID_NULL;
}
}
root = pop->store->root.head.pe_first;
pmemobj_mutex_unlock(pop, &pop->rootlock);
return root;
}
/*
* pmemobj_vg_register_object -- (internal) notify Valgrind about object
*/
static void
pmemobj_vg_register_object(struct pmemobjpool *pop, PMEMoid oid, int is_root)
{
LOG(4, "pop %p oid.off 0x%016jx is_root %d", pop, oid.off, is_root);
void *addr = pmemobj_direct(oid);
size_t sz;
if (is_root)
sz = pmemobj_root_size(pop);
else
sz = pmemobj_alloc_usable_size(oid);
size_t headers = sizeof (struct allocation_header) + OBJ_OOB_SIZE;
VALGRIND_DO_MEMPOOL_ALLOC(pop, addr, sz);
VALGRIND_DO_MAKE_MEM_DEFINED(pop, addr - headers, sz + headers);
struct oob_header *oob = OOB_HEADER_FROM_PTR(addr);
if (!is_root)
/* no one should touch it */
VALGRIND_DO_MAKE_MEM_NOACCESS(pop, &oob->size,
sizeof (oob->size));
/* no one should touch it */
VALGRIND_DO_MAKE_MEM_NOACCESS(pop, &oob->data.padding,
sizeof (oob->data.padding));
}
/*
* pocli_str_root_print -- print a string stored in the root object data
*/
static enum pocli_ret
pocli_str_root_print(struct pocli_ctx *ctx, struct pocli_args *args)
{
if (args->argc != 3)
return POCLI_ERR_ARGS;
size_t offset = 0;
enum pocli_ret ret = pocli_args_size(args, 1, &offset);
if (ret)
return ret;
size_t len = 0;
ret = pocli_args_number(args, 2, &len);
if (ret)
return ret;
size_t root_size = pmemobj_root_size(ctx->pop);
if (offset + len > root_size)
return POCLI_ERR_ARGS;
PMEMoid root = pmemobj_root(ctx->pop, root_size);
assert(!OID_IS_NULL(root));
char *root_data = pmemobj_direct(root);
char *buff = malloc(len + 1);
memcpy(buff, root_data + offset, len);
buff[len] = '\0';
printf("%s\n", buff);
return ret;
}
/*
* pocli_str_root_copy -- copy a string into a root object data
*/
static enum pocli_ret
pocli_str_root_copy(struct pocli_ctx *ctx, struct pocli_args *args)
{
if (args->argc != 3)
return POCLI_ERR_ARGS;
size_t offset = 0;
enum pocli_ret ret = pocli_args_size(args, 1, &offset);
if (ret)
return ret;
const char *str = args->argv[2];
if (str == NULL)
return POCLI_ERR_ARGS;
size_t len = strlen(str);
size_t root_size = pmemobj_root_size(ctx->pop);
if (offset + len > root_size)
return POCLI_ERR_ARGS;
PMEMoid root = pmemobj_root(ctx->pop, root_size);
assert(!OID_IS_NULL(root));
char *root_data = pmemobj_direct(root);
pmemobj_memcpy_persist(ctx->pop, root_data + offset, str, len);
return ret;
}
/*
* pocli_pmemobj_root_size -- pmemobj_root_size() command
*/
static enum pocli_ret
pocli_pmemobj_root_size(struct pocli_ctx *ctx, struct pocli_args *args)
{
if (args->argc != 1)
return POCLI_ERR_ARGS;
size_t size = pmemobj_root_size(ctx->pop);
pocli_printf(ctx, "%s: size = %lu\n",
args->argv[0], size);
return POCLI_RET_OK;
}
/*
* pocli_args_obj_root -- parse object's descriptor from root object
*/
static enum pocli_ret
pocli_args_obj_root(struct pocli_ctx *ctx, char *in, PMEMoid **oidp)
{
char *input = strdup(in);
if (!input)
return POCLI_ERR_MALLOC;
if (!oidp)
return POCLI_ERR_PARS;
struct pocli_args *args = pocli_args_alloc(NULL, input, ".");
if (!args)
return POCLI_ERR_PARS;
enum pocli_ret ret = POCLI_RET_OK;
if (strcmp(args->argv[0], "r") != 0) {
ret = POCLI_ERR_PARS;
goto out;
}
PMEMoid *oid = &ctx->root;
size_t size = pmemobj_root_size(ctx->pop);
for (int i = 1; i < args->argc; i++) {
unsigned ind;
char c;
int n = sscanf(args->argv[i], "%u%c", &ind, &c);
if (n != 1) {
ret = POCLI_ERR_PARS;
goto out;
}
size_t max_ind = size / sizeof (PMEMoid);
if (!max_ind || ind >= max_ind) {
ret = POCLI_ERR_PARS;
goto out;
}
PMEMoid *oids = pmemobj_direct(*oid);
oid = &oids[ind];
size = pmemobj_alloc_usable_size(*oid);
}
*oidp = oid;
out:
free(input);
free(args);
return ret;
}
/*
* pocli_alloc -- allocate main context
*/
static struct pocli *
pocli_alloc(FILE *input, const char *fname, const struct pocli_cmd *cmds,
size_t ncmds, size_t inbuf_len)
{
assert(inbuf_len < INT_MAX);
struct pocli_opts opts;
if (pocli_read_opts(&opts))
return NULL;
struct pocli *pcli = calloc(1, sizeof (*pcli));
if (!pcli)
return NULL;
memcpy(&pcli->opts, &opts, sizeof (pcli->opts));
pcli->in = input;
pcli->istty = isatty(fileno(pcli->in));
pcli->cmds = cmds;
pcli->ncmds = ncmds;
pcli->ctx.pocli = pcli;
pcli->ctx.err = stderr;
pcli->ctx.out = stdout;
pcli->ctx.pop = pmemobj_open(fname, NULL);
if (!pcli->ctx.pop) {
fprintf(stderr, "%s: %s\n", fname, pmemobj_errormsg());
goto err_free_pcli;
}
size_t root_size = pmemobj_root_size(pcli->ctx.pop);
if (root_size)
pcli->ctx.root = pmemobj_root(pcli->ctx.pop, root_size);
pcli->inbuf_len = inbuf_len;
pcli->inbuf = malloc(inbuf_len);
if (!pcli->inbuf)
goto err_close_pool;
return pcli;
err_close_pool:
pmemobj_close(pcli->ctx.pop);
err_free_pcli:
free(pcli);
return NULL;
}
/*
* pmemobj_vg_boot -- (internal) notify Valgrind about pool objects
*/
static void
pmemobj_vg_boot(struct pmemobjpool *pop)
{
if (!On_valgrind)
return;
LOG(4, "pop %p", pop);
PMEMoid oid;
int rs = pmemobj_root_size(pop);
if (rs) {
oid = pmemobj_root(pop, rs);
pmemobj_vg_register_object(pop, oid, 1);
}
for (int i = 0; i < PMEMOBJ_NUM_OID_TYPES; ++i) {
for (oid = pmemobj_first(pop, i); !OID_IS_NULL(oid);
oid = pmemobj_next(oid))
pmemobj_vg_register_object(pop, oid, 0);
}
if (getenv("PMEMOBJ_VG_CHECK_UNDEF"))
pmemobj_vg_check_no_undef(pop);
}
