rt: Remove old precise GC code

mk/rt.mk

@@ -71,7 +71,6 @@ RUNTIME_CXXS_$(1)_$(2) := \
               rt/rust_upcall.cpp \
               rt/rust_uv.cpp \
               rt/rust_crate_map.cpp \
-              rt/rust_gc_metadata.cpp \
               rt/rust_util.cpp \
               rt/rust_log.cpp \
               rt/isaac/randport.cpp \

src/libstd/rt/mod.rs

@@ -224,10 +224,7 @@ pub fn init(argc: int, argv: **u8, crate_map: *u8) {
         args::init(argc, argv);
         env::init();
         logging::init(crate_map);
-        rust_update_gc_metadata(crate_map);
     }
-
-    externfn!(fn rust_update_gc_metadata(crate_map: *u8));
 }
 
 /// One-time runtime cleanup.

src/rt/rust_gc_metadata.cpp

-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#include "rust_gc_metadata.h"
-#include "rust_crate_map.h"
-#include "rust_globals.h"
-
-#include <algorithm>
-#include <vector>
-
-struct safe_point {
-    uintptr_t safe_point_loc;
-    uintptr_t safe_point_meta;
-    uintptr_t function_meta;
-};
-
-struct update_gc_entry_args {
-    std::vector<safe_point> *safe_points;
-};
-
-static void
-update_gc_entry(const mod_entry *entry, void *cookie) {
-    update_gc_entry_args *args = (update_gc_entry_args *)cookie;
-    if (!strcmp(entry->name, "_gc_module_metadata")) {
-        uintptr_t *next = (uintptr_t *)entry->state;
-        uint32_t num_safe_points = *(uint32_t *)next;
-        next++;
-
-        for (uint32_t i = 0; i < num_safe_points; i++) {
-            safe_point sp = { next[0], next[1], next[2] };
-            next += 3;
-
-            args->safe_points->push_back(sp);
-        }
-    }
-}
-
-static bool
-cmp_safe_point(safe_point a, safe_point b) {
-    return a.safe_point_loc < b.safe_point_loc;
-}
-
-uintptr_t *global_safe_points = 0;
-
-void
-update_gc_metadata(const void* map) {
-    std::vector<safe_point> safe_points;
-    update_gc_entry_args args = { &safe_points };
-
-    // Extract list of safe points from each module.
-    iter_crate_map((const cratemap *)map, update_gc_entry, (void *)&args);
-    std::sort(safe_points.begin(), safe_points.end(), cmp_safe_point);
-
-    // Serialize safe point list into format expected by runtime.
-    global_safe_points =
-        (uintptr_t *)malloc((safe_points.size()*3 + 1)*sizeof(uintptr_t));
-    if (!global_safe_points) return;
-
-    uintptr_t *next = global_safe_points;
-    *next = safe_points.size();
-    next++;
-    for (uint32_t i = 0; i < safe_points.size(); i++) {
-        next[0] = safe_points[i].safe_point_loc;
-        next[1] = safe_points[i].safe_point_meta;
-        next[2] = safe_points[i].function_meta;
-        next += 3;
-    }
-}
-
-extern "C" CDECL void *
-rust_gc_metadata() {
-    return (void *)global_safe_points;
-}
-
-extern "C" CDECL void
-rust_update_gc_metadata(const void* map) {
-    update_gc_metadata(map);
-}
-
-//
-// Local Variables:
-// mode: C++
-// fill-column: 78;
-// indent-tabs-mode: nil
-// c-basic-offset: 4
-// buffer-file-coding-system: utf-8-unix
-// End:
-//

src/rt/rust_gc_metadata.h

-// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#ifndef RUST_GC_METADATA_H
-#define RUST_GC_METADATA_H
-
-void update_gc_metadata(const void* map);
-
-//
-// Local Variables:
-// mode: C++
-// fill-column: 78;
-// indent-tabs-mode: nil
-// c-basic-offset: 4
-// buffer-file-coding-system: utf-8-unix
-// End:
-//
-
-#endif /* RUST_GC_METADATA_H */

src/rt/rustrt.def.in

@@ -130,8 +130,6 @@ rust_lock_little_lock
 rust_unlock_little_lock
 tdefl_compress_mem_to_heap
 tinfl_decompress_mem_to_heap
-rust_gc_metadata
-rust_update_gc_metadata
 rust_uv_ip4_port
 rust_uv_ip6_port
 rust_uv_tcp_getpeername