Sat, 06 Oct 2012 01:17:44 -0700
7127708: G1: change task num types from int to uint in concurrent mark
Summary: Change the type of various task num fields, parameters etc to unsigned and rename them to be more consistent with the other collectors. Code changes were also reviewed by Vitaly Davidovich.
Reviewed-by: johnc
Contributed-by: Kaushik Srenevasan <kaushik@twitter.com>
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP
28 #include "gc_implementation/g1/heapRegionSet.hpp"
30 //////////////////// HeapRegionSetBase ////////////////////
32 inline void HeapRegionSetBase::update_for_addition(HeapRegion* hr) {
33 // Assumes the caller has already verified the region.
35 _length += 1;
36 _region_num += hr->region_num();
37 _total_used_bytes += hr->used();
38 }
40 inline void HeapRegionSetBase::add_internal(HeapRegion* hr) {
41 hrs_assert_region_ok(this, hr, NULL);
42 assert(hr->next() == NULL, hrs_ext_msg(this, "should not already be linked"));
44 update_for_addition(hr);
45 hr->set_containing_set(this);
46 }
48 inline void HeapRegionSetBase::update_for_removal(HeapRegion* hr) {
49 // Assumes the caller has already verified the region.
50 assert(_length > 0, hrs_ext_msg(this, "pre-condition"));
51 _length -= 1;
53 uint region_num_diff = hr->region_num();
54 assert(region_num_diff <= _region_num,
55 hrs_err_msg("[%s] region's region num: %u "
56 "should be <= region num: %u",
57 name(), region_num_diff, _region_num));
58 _region_num -= region_num_diff;
60 size_t used_bytes = hr->used();
61 assert(used_bytes <= _total_used_bytes,
62 hrs_err_msg("[%s] region's used bytes: "SIZE_FORMAT" "
63 "should be <= used bytes: "SIZE_FORMAT,
64 name(), used_bytes, _total_used_bytes));
65 _total_used_bytes -= used_bytes;
66 }
68 inline void HeapRegionSetBase::remove_internal(HeapRegion* hr) {
69 hrs_assert_region_ok(this, hr, this);
70 assert(hr->next() == NULL, hrs_ext_msg(this, "should already be unlinked"));
72 hr->set_containing_set(NULL);
73 update_for_removal(hr);
74 }
76 //////////////////// HeapRegionSet ////////////////////
78 inline void HeapRegionSet::add(HeapRegion* hr) {
79 hrs_assert_mt_safety_ok(this);
80 // add_internal() will verify the region.
81 add_internal(hr);
82 }
84 inline void HeapRegionSet::remove(HeapRegion* hr) {
85 hrs_assert_mt_safety_ok(this);
86 // remove_internal() will verify the region.
87 remove_internal(hr);
88 }
90 inline void HeapRegionSet::remove_with_proxy(HeapRegion* hr,
91 HeapRegionSet* proxy_set) {
92 // No need to fo the MT safety check here given that this method
93 // does not update the contents of the set but instead accumulates
94 // the changes in proxy_set which is assumed to be thread-local.
95 hrs_assert_sets_match(this, proxy_set);
96 hrs_assert_region_ok(this, hr, this);
98 hr->set_containing_set(NULL);
99 proxy_set->update_for_addition(hr);
100 }
102 //////////////////// HeapRegionLinkedList ////////////////////
104 inline void HeapRegionLinkedList::add_as_head(HeapRegion* hr) {
105 hrs_assert_mt_safety_ok(this);
106 assert((length() == 0 && _head == NULL && _tail == NULL) ||
107 (length() > 0 && _head != NULL && _tail != NULL),
108 hrs_ext_msg(this, "invariant"));
109 // add_internal() will verify the region.
110 add_internal(hr);
112 // Now link the region.
113 if (_head != NULL) {
114 hr->set_next(_head);
115 } else {
116 _tail = hr;
117 }
118 _head = hr;
119 }
121 inline void HeapRegionLinkedList::add_as_tail(HeapRegion* hr) {
122 hrs_assert_mt_safety_ok(this);
123 assert((length() == 0 && _head == NULL && _tail == NULL) ||
124 (length() > 0 && _head != NULL && _tail != NULL),
125 hrs_ext_msg(this, "invariant"));
126 // add_internal() will verify the region.
127 add_internal(hr);
129 // Now link the region.
130 if (_tail != NULL) {
131 _tail->set_next(hr);
132 } else {
133 _head = hr;
134 }
135 _tail = hr;
136 }
138 inline HeapRegion* HeapRegionLinkedList::remove_head() {
139 hrs_assert_mt_safety_ok(this);
140 assert(!is_empty(), hrs_ext_msg(this, "the list should not be empty"));
141 assert(length() > 0 && _head != NULL && _tail != NULL,
142 hrs_ext_msg(this, "invariant"));
144 // We need to unlink it first.
145 HeapRegion* hr = _head;
146 _head = hr->next();
147 if (_head == NULL) {
148 _tail = NULL;
149 }
150 hr->set_next(NULL);
152 // remove_internal() will verify the region.
153 remove_internal(hr);
154 return hr;
155 }
157 inline HeapRegion* HeapRegionLinkedList::remove_head_or_null() {
158 hrs_assert_mt_safety_ok(this);
160 if (!is_empty()) {
161 return remove_head();
162 } else {
163 return NULL;
164 }
165 }
167 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSET_INLINE_HPP