58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
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// Rust cycle collector. Temporary, but will probably stick around for some
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// time until LLVM's GC infrastructure is more mature.
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#include <cstdio>
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#include <cstdlib>
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#include <map>
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#include <vector>
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#include "rust_gc.h"
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#include "rust_internal.h"
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#include "rust_shape.h"
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#include "rust_task.h"
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#undef DPRINT
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#define DPRINT(fmt,...) fprintf(stderr, fmt, ##__VA_ARGS__)
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namespace cc {
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void
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do_cc(rust_task *task) {
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std::map<void *,type_desc *>::iterator begin(task->local_allocs.begin());
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std::map<void *,type_desc *>::iterator end(task->local_allocs.end());
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while (begin != end) {
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void *p = begin->first;
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type_desc *tydesc = begin->second;
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DPRINT("marking allocation: %p, tydesc=%p\n", p, tydesc);
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// Prevents warnings for now
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(void)p;
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(void)tydesc;
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#if 0
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shape::arena arena;
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shape::type_param *params =
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shape::type_param::from_tydesc(tydesc, arena);
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mark mark(task, true, tydesc->shape, params, tydesc->shape_tables, p);
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mark.walk();
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#endif
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++begin;
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}
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}
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void
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maybe_cc(rust_task *task) {
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// FIXME: We ought to lock this.
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static int zeal = -1;
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if (zeal == -1) {
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char *ev = getenv("RUST_CC_ZEAL");
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zeal = ev && ev[0] != '\0' && ev[0] != '0';
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}
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if (zeal)
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do_cc(task);
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}
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} // end namespace cc
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