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