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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "ppapi/shared_impl/var_tracker.h" | 5 #include "ppapi/shared_impl/var_tracker.h" |
6 | 6 |
7 #include <string.h> | 7 #include <string.h> |
8 | 8 |
9 #include <limits> | 9 #include <limits> |
10 | 10 |
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31 | 31 |
32 VarTracker::~VarTracker() {} | 32 VarTracker::~VarTracker() {} |
33 | 33 |
34 void VarTracker::CheckThreadingPreconditions() const { | 34 void VarTracker::CheckThreadingPreconditions() const { |
35 DCHECK(!thread_checker_ || thread_checker_->CalledOnValidThread()); | 35 DCHECK(!thread_checker_ || thread_checker_->CalledOnValidThread()); |
36 #ifndef NDEBUG | 36 #ifndef NDEBUG |
37 ProxyLock::AssertAcquired(); | 37 ProxyLock::AssertAcquired(); |
38 #endif | 38 #endif |
39 } | 39 } |
40 | 40 |
41 int32 VarTracker::AddVar(Var* var) { | 41 int32_t VarTracker::AddVar(Var* var) { |
42 CheckThreadingPreconditions(); | 42 CheckThreadingPreconditions(); |
43 | 43 |
44 return AddVarInternal(var, ADD_VAR_TAKE_ONE_REFERENCE); | 44 return AddVarInternal(var, ADD_VAR_TAKE_ONE_REFERENCE); |
45 } | 45 } |
46 | 46 |
47 Var* VarTracker::GetVar(int32 var_id) const { | 47 Var* VarTracker::GetVar(int32_t var_id) const { |
48 CheckThreadingPreconditions(); | 48 CheckThreadingPreconditions(); |
49 | 49 |
50 VarMap::const_iterator result = live_vars_.find(var_id); | 50 VarMap::const_iterator result = live_vars_.find(var_id); |
51 if (result == live_vars_.end()) | 51 if (result == live_vars_.end()) |
52 return NULL; | 52 return NULL; |
53 return result->second.var.get(); | 53 return result->second.var.get(); |
54 } | 54 } |
55 | 55 |
56 Var* VarTracker::GetVar(const PP_Var& var) const { | 56 Var* VarTracker::GetVar(const PP_Var& var) const { |
57 CheckThreadingPreconditions(); | 57 CheckThreadingPreconditions(); |
58 | 58 |
59 if (!IsVarTypeRefcounted(var.type)) | 59 if (!IsVarTypeRefcounted(var.type)) |
60 return NULL; | 60 return NULL; |
61 return GetVar(static_cast<int32>(var.value.as_id)); | 61 return GetVar(static_cast<int32_t>(var.value.as_id)); |
62 } | 62 } |
63 | 63 |
64 bool VarTracker::AddRefVar(int32 var_id) { | 64 bool VarTracker::AddRefVar(int32_t var_id) { |
65 CheckThreadingPreconditions(); | 65 CheckThreadingPreconditions(); |
66 | 66 |
67 DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR)) | 67 DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR)) |
68 << var_id << " is not a PP_Var ID."; | 68 << var_id << " is not a PP_Var ID."; |
69 VarMap::iterator found = live_vars_.find(var_id); | 69 VarMap::iterator found = live_vars_.find(var_id); |
70 if (found == live_vars_.end()) { | 70 if (found == live_vars_.end()) { |
71 NOTREACHED(); // Invalid var. | 71 NOTREACHED(); // Invalid var. |
72 return false; | 72 return false; |
73 } | 73 } |
74 | 74 |
75 VarInfo& info = found->second; | 75 VarInfo& info = found->second; |
76 if (info.ref_count == 0) { | 76 if (info.ref_count == 0) { |
77 // All live vars with no refcount should be tracked objects. | 77 // All live vars with no refcount should be tracked objects. |
78 DCHECK(info.track_with_no_reference_count > 0); | 78 DCHECK(info.track_with_no_reference_count > 0); |
79 DCHECK(info.var->GetType() == PP_VARTYPE_OBJECT); | 79 DCHECK(info.var->GetType() == PP_VARTYPE_OBJECT); |
80 | 80 |
81 TrackedObjectGettingOneRef(found); | 81 TrackedObjectGettingOneRef(found); |
82 } | 82 } |
83 | 83 |
84 // Basic refcount increment. | 84 // Basic refcount increment. |
85 info.ref_count++; | 85 info.ref_count++; |
86 return true; | 86 return true; |
87 } | 87 } |
88 | 88 |
89 bool VarTracker::AddRefVar(const PP_Var& var) { | 89 bool VarTracker::AddRefVar(const PP_Var& var) { |
90 CheckThreadingPreconditions(); | 90 CheckThreadingPreconditions(); |
91 | 91 |
92 if (!IsVarTypeRefcounted(var.type)) | 92 if (!IsVarTypeRefcounted(var.type)) |
93 return true; | 93 return true; |
94 return AddRefVar(static_cast<int32>(var.value.as_id)); | 94 return AddRefVar(static_cast<int32_t>(var.value.as_id)); |
95 } | 95 } |
96 | 96 |
97 bool VarTracker::ReleaseVar(int32 var_id) { | 97 bool VarTracker::ReleaseVar(int32_t var_id) { |
98 CheckThreadingPreconditions(); | 98 CheckThreadingPreconditions(); |
99 | 99 |
100 DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR)) | 100 DLOG_IF(ERROR, !CheckIdType(var_id, PP_ID_TYPE_VAR)) |
101 << var_id << " is not a PP_Var ID."; | 101 << var_id << " is not a PP_Var ID."; |
102 VarMap::iterator found = live_vars_.find(var_id); | 102 VarMap::iterator found = live_vars_.find(var_id); |
103 if (found == live_vars_.end()) | 103 if (found == live_vars_.end()) |
104 return false; | 104 return false; |
105 | 105 |
106 VarInfo& info = found->second; | 106 VarInfo& info = found->second; |
107 if (info.ref_count == 0) { | 107 if (info.ref_count == 0) { |
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127 } | 127 } |
128 } | 128 } |
129 return true; | 129 return true; |
130 } | 130 } |
131 | 131 |
132 bool VarTracker::ReleaseVar(const PP_Var& var) { | 132 bool VarTracker::ReleaseVar(const PP_Var& var) { |
133 CheckThreadingPreconditions(); | 133 CheckThreadingPreconditions(); |
134 | 134 |
135 if (!IsVarTypeRefcounted(var.type)) | 135 if (!IsVarTypeRefcounted(var.type)) |
136 return false; | 136 return false; |
137 return ReleaseVar(static_cast<int32>(var.value.as_id)); | 137 return ReleaseVar(static_cast<int32_t>(var.value.as_id)); |
138 } | 138 } |
139 | 139 |
140 int32 VarTracker::AddVarInternal(Var* var, AddVarRefMode mode) { | 140 int32_t VarTracker::AddVarInternal(Var* var, AddVarRefMode mode) { |
141 // If the plugin manages to create millions of strings. | 141 // If the plugin manages to create millions of strings. |
142 if (last_var_id_ == std::numeric_limits<int32>::max() >> kPPIdTypeBits) | 142 if (last_var_id_ == std::numeric_limits<int32_t>::max() >> kPPIdTypeBits) |
143 return 0; | 143 return 0; |
144 | 144 |
145 int32 new_id = MakeTypedId(++last_var_id_, PP_ID_TYPE_VAR); | 145 int32_t new_id = MakeTypedId(++last_var_id_, PP_ID_TYPE_VAR); |
146 std::pair<VarMap::iterator, bool> was_inserted = | 146 std::pair<VarMap::iterator, bool> was_inserted = |
147 live_vars_.insert(std::make_pair( | 147 live_vars_.insert(std::make_pair( |
148 new_id, VarInfo(var, mode == ADD_VAR_TAKE_ONE_REFERENCE ? 1 : 0))); | 148 new_id, VarInfo(var, mode == ADD_VAR_TAKE_ONE_REFERENCE ? 1 : 0))); |
149 // We should never insert an ID that already exists. | 149 // We should never insert an ID that already exists. |
150 DCHECK(was_inserted.second); | 150 DCHECK(was_inserted.second); |
151 | 151 |
152 return new_id; | 152 return new_id; |
153 } | 153 } |
154 | 154 |
155 VarTracker::VarMap::iterator VarTracker::GetLiveVar(int32 id) { | 155 VarTracker::VarMap::iterator VarTracker::GetLiveVar(int32_t id) { |
156 return live_vars_.find(id); | 156 return live_vars_.find(id); |
157 } | 157 } |
158 | 158 |
159 int VarTracker::GetRefCountForObject(const PP_Var& plugin_object) { | 159 int VarTracker::GetRefCountForObject(const PP_Var& plugin_object) { |
160 CheckThreadingPreconditions(); | 160 CheckThreadingPreconditions(); |
161 | 161 |
162 VarMap::iterator found = GetLiveVar(plugin_object); | 162 VarMap::iterator found = GetLiveVar(plugin_object); |
163 if (found == live_vars_.end()) | 163 if (found == live_vars_.end()) |
164 return -1; | 164 return -1; |
165 return found->second.ref_count; | 165 return found->second.ref_count; |
166 } | 166 } |
167 | 167 |
168 int VarTracker::GetTrackedWithNoReferenceCountForObject( | 168 int VarTracker::GetTrackedWithNoReferenceCountForObject( |
169 const PP_Var& plugin_object) { | 169 const PP_Var& plugin_object) { |
170 CheckThreadingPreconditions(); | 170 CheckThreadingPreconditions(); |
171 | 171 |
172 VarMap::iterator found = GetLiveVar(plugin_object); | 172 VarMap::iterator found = GetLiveVar(plugin_object); |
173 if (found == live_vars_.end()) | 173 if (found == live_vars_.end()) |
174 return -1; | 174 return -1; |
175 return found->second.track_with_no_reference_count; | 175 return found->second.track_with_no_reference_count; |
176 } | 176 } |
177 | 177 |
178 // static | 178 // static |
179 bool VarTracker::IsVarTypeRefcounted(PP_VarType type) { | 179 bool VarTracker::IsVarTypeRefcounted(PP_VarType type) { |
180 return type >= PP_VARTYPE_STRING; | 180 return type >= PP_VARTYPE_STRING; |
181 } | 181 } |
182 | 182 |
183 VarTracker::VarMap::iterator VarTracker::GetLiveVar(const PP_Var& var) { | 183 VarTracker::VarMap::iterator VarTracker::GetLiveVar(const PP_Var& var) { |
184 return live_vars_.find(static_cast<int32>(var.value.as_id)); | 184 return live_vars_.find(static_cast<int32_t>(var.value.as_id)); |
185 } | 185 } |
186 | 186 |
187 VarTracker::VarMap::const_iterator VarTracker::GetLiveVar(const PP_Var& var) | 187 VarTracker::VarMap::const_iterator VarTracker::GetLiveVar(const PP_Var& var) |
188 const { | 188 const { |
189 return live_vars_.find(static_cast<int32>(var.value.as_id)); | 189 return live_vars_.find(static_cast<int32_t>(var.value.as_id)); |
190 } | 190 } |
191 | 191 |
192 PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes) { | 192 PP_Var VarTracker::MakeArrayBufferPPVar(uint32_t size_in_bytes) { |
193 CheckThreadingPreconditions(); | 193 CheckThreadingPreconditions(); |
194 | 194 |
195 scoped_refptr<ArrayBufferVar> array_buffer(CreateArrayBuffer(size_in_bytes)); | 195 scoped_refptr<ArrayBufferVar> array_buffer(CreateArrayBuffer(size_in_bytes)); |
196 if (!array_buffer.get()) | 196 if (!array_buffer.get()) |
197 return PP_MakeNull(); | 197 return PP_MakeNull(); |
198 return array_buffer->GetPPVar(); | 198 return array_buffer->GetPPVar(); |
199 } | 199 } |
200 | 200 |
201 PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes, | 201 PP_Var VarTracker::MakeArrayBufferPPVar(uint32_t size_in_bytes, |
202 const void* data) { | 202 const void* data) { |
203 CheckThreadingPreconditions(); | 203 CheckThreadingPreconditions(); |
204 | 204 |
205 ArrayBufferVar* array_buffer = MakeArrayBufferVar(size_in_bytes, data); | 205 ArrayBufferVar* array_buffer = MakeArrayBufferVar(size_in_bytes, data); |
206 return array_buffer ? array_buffer->GetPPVar() : PP_MakeNull(); | 206 return array_buffer ? array_buffer->GetPPVar() : PP_MakeNull(); |
207 } | 207 } |
208 | 208 |
209 ArrayBufferVar* VarTracker::MakeArrayBufferVar(uint32 size_in_bytes, | 209 ArrayBufferVar* VarTracker::MakeArrayBufferVar(uint32_t size_in_bytes, |
210 const void* data) { | 210 const void* data) { |
211 CheckThreadingPreconditions(); | 211 CheckThreadingPreconditions(); |
212 | 212 |
213 ArrayBufferVar* array_buffer(CreateArrayBuffer(size_in_bytes)); | 213 ArrayBufferVar* array_buffer(CreateArrayBuffer(size_in_bytes)); |
214 if (!array_buffer) | 214 if (!array_buffer) |
215 return NULL; | 215 return NULL; |
216 memcpy(array_buffer->Map(), data, size_in_bytes); | 216 memcpy(array_buffer->Map(), data, size_in_bytes); |
217 return array_buffer; | 217 return array_buffer; |
218 } | 218 } |
219 | 219 |
220 PP_Var VarTracker::MakeArrayBufferPPVar(uint32 size_in_bytes, | 220 PP_Var VarTracker::MakeArrayBufferPPVar(uint32_t size_in_bytes, |
221 base::SharedMemoryHandle handle) { | 221 base::SharedMemoryHandle handle) { |
222 CheckThreadingPreconditions(); | 222 CheckThreadingPreconditions(); |
223 | 223 |
224 scoped_refptr<ArrayBufferVar> array_buffer( | 224 scoped_refptr<ArrayBufferVar> array_buffer( |
225 CreateShmArrayBuffer(size_in_bytes, handle)); | 225 CreateShmArrayBuffer(size_in_bytes, handle)); |
226 if (!array_buffer.get()) | 226 if (!array_buffer.get()) |
227 return PP_MakeNull(); | 227 return PP_MakeNull(); |
228 return array_buffer->GetPPVar(); | 228 return array_buffer->GetPPVar(); |
229 } | 229 } |
230 | 230 |
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260 bool VarTracker::DeleteObjectInfoIfNecessary(VarMap::iterator iter) { | 260 bool VarTracker::DeleteObjectInfoIfNecessary(VarMap::iterator iter) { |
261 if (iter->second.ref_count != 0 || | 261 if (iter->second.ref_count != 0 || |
262 iter->second.track_with_no_reference_count != 0) | 262 iter->second.track_with_no_reference_count != 0) |
263 return false; // Object still alive. | 263 return false; // Object still alive. |
264 iter->second.var->ResetVarID(); | 264 iter->second.var->ResetVarID(); |
265 live_vars_.erase(iter); | 265 live_vars_.erase(iter); |
266 return true; | 266 return true; |
267 } | 267 } |
268 | 268 |
269 } // namespace ppapi | 269 } // namespace ppapi |
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