/*
* libvmmalloc_clone - (internal) clone the entire pool
*/
static void *
libvmmalloc_clone(void)
{
LOG(3, NULL);
Fd_clone = util_tmpfile(Dir, Vmp->size);
if (Fd_clone == -1)
return NULL;
void *addr = mmap(NULL, Vmp->size, PROT_READ|PROT_WRITE,
MAP_SHARED, Fd_clone, 0);
if (addr == MAP_FAILED) {
LOG(1, "!mmap");
(void) close(Fd_clone);
return NULL;
}
LOG(3, "copy the entire pool file: dst %p src %p size %zu",
addr, Vmp->addr, Vmp->size);
util_range_rw(Vmp->addr, sizeof (struct pool_hdr));
/*
* Part of vmem pool was probably freed at some point, so Valgrind
* marked it as undefined/inaccessible. We need to duplicate the whole
* pool, so as a workaround temporarily disable error reporting.
*/
VALGRIND_DO_DISABLE_ERROR_REPORTING;
memcpy(addr, Vmp->addr, Vmp->size);
VALGRIND_DO_ENABLE_ERROR_REPORTING;
util_range_none(Vmp->addr, sizeof (struct pool_hdr));
return addr;
}
/*
* vmem_delete -- delete a memory pool
*/
void
vmem_delete(VMEM *vmp)
{
LOG(3, "vmp %p", vmp);
int ret = je_vmem_pool_delete((pool_t *)((uintptr_t)vmp + Header_size));
if (ret != 0) {
ERR("invalid pool handle: %p", vmp);
errno = EINVAL;
return;
}
util_range_rw(vmp->addr, sizeof (struct pool_hdr));
if (vmp->caller_mapped == 0)
util_unmap(vmp->addr, vmp->size);
}
