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#include "rust_internal.h"
#include <algorithm>
type_desc *
rust_crate_cache::get_type_desc(size_t size,
size_t align,
size_t n_descs,
type_desc const **descs,
uintptr_t n_obj_params)
{
I(sched, n_descs > 1);
type_desc *td = NULL;
size_t keysz = n_descs * sizeof(type_desc*);
HASH_FIND(hh, this->type_descs, descs, keysz, td);
if (td) {
DLOG(sched, cache, "rust_crate_cache::get_type_desc hit");
// FIXME: This is a gross hack.
td->n_obj_params = std::max(td->n_obj_params, n_obj_params);
return td;
}
DLOG(sched, cache, "rust_crate_cache::get_type_desc miss");
td = (type_desc*) sched->kernel->malloc(sizeof(type_desc) + keysz,
"crate cache typedesc");
if (!td)
return NULL;
// By convention, desc 0 is the root descriptor.
// but we ignore the size and alignment of it and use the
// passed-in, computed values.
memcpy(td, descs[0], sizeof(type_desc));
td->first_param = &td->descs[1];
td->size = size;
td->align = align;
for (size_t i = 0; i < n_descs; ++i) {
DLOG(sched, cache,
"rust_crate_cache::descs[%" PRIdPTR "] = 0x%" PRIxPTR,
i, descs[i]);
td->descs[i] = descs[i];
}
td->n_obj_params = n_obj_params;
td->n_params = n_descs - 1;
HASH_ADD(hh, this->type_descs, descs, keysz, td);
return td;
}
void**
rust_crate_cache::get_dict(size_t n_fields, void** dict) {
rust_hashable_dict *found = NULL;
size_t dictsz = sizeof(void*) * n_fields;
HASH_FIND(hh, this->dicts, dict, dictsz, found);
if (found) return &(found->fields[0]);
found = (rust_hashable_dict*)
sched->kernel->malloc(sizeof(UT_hash_handle) + dictsz,
"crate cache dict");
if (!found) return NULL;
void** retptr = &(found->fields[0]);
memcpy(retptr, dict, dictsz);
HASH_ADD_KEYPTR(hh, this->dicts, retptr, dictsz, found);
return retptr;
}
rust_crate_cache::rust_crate_cache(rust_scheduler *sched)
: type_descs(NULL),
dicts(NULL),
sched(sched),
idx(0)
{
}
void
rust_crate_cache::flush() {
DLOG(sched, cache, "rust_crate_cache::flush()");
while (type_descs) {
type_desc *d = type_descs;
HASH_DEL(type_descs, d);
DLOG(sched, mem, "rust_crate_cache::flush() tydesc %" PRIxPTR, d);
sched->kernel->free(d);
}
while (dicts) {
rust_hashable_dict *d = dicts;
HASH_DEL(dicts, d);
sched->kernel->free(d);
}
}
rust_crate_cache::~rust_crate_cache()
{
flush();
}
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
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