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Side by Side Diff: native_client_sdk/src/tests/nacl_io_test/fake_var_manager.cc

Issue 137853023: [NaCl SDK] nacl_io: Add new fakes (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 6 years, 11 months ago
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1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "fake_var_manager.h"
6
7 #include "gtest/gtest.h"
8
9 FakeVarManager::FakeVarManager() : debug(false), next_id_(1) {}
10
11 FakeVarManager::~FakeVarManager() {
12 // The ref counts for all vars should be zero.
13 for (VarMap::const_iterator iter = var_map_.begin(); iter != var_map_.end();
14 ++iter) {
15 const FakeVarData& var_data = iter->second;
16 EXPECT_EQ(0, var_data.ref_count) << "Non-zero refcount on "
17 << Describe(var_data);
18 }
19 }
20
21 FakeVarData* FakeVarManager::CreateVarData() {
22 Id id = next_id_++;
23 FakeVarData data;
24 data.id = id;
25 data.ref_count = 1;
26 var_map_[id] = data;
27 return &var_map_[id];
28 }
29
30 void FakeVarManager::AddRef(PP_Var var) {
31 // From ppb_var.h:
32 // AddRef() adds a reference to the given var. If this is not a refcounted
33 // object, this function will do nothing so you can always call it no matter
34 // what the type.
35
36 FakeVarData* var_data = GetVarData(var);
37 if (!var_data)
38 return;
39
40 EXPECT_GT(var_data->ref_count, 0)
41 << "AddRefing freed " << Describe(*var_data);
42 var_data->ref_count++;
43 if (debug)
44 printf("AddRef of %s [new refcount=%d]\n",
45 Describe(*var_data).c_str(),
46 var_data->ref_count);
47 }
48
49 std::string FakeVarManager::Describe(const FakeVarData& var_data) {
50 std::stringstream rtn;
51 switch (var_data.type) {
52 case PP_VARTYPE_STRING:
53 rtn << "String with id " << var_data.id <<
54 " with value \"" << var_data.string_value << "\"";
55 break;
56 case PP_VARTYPE_ARRAY:
57 rtn << "Array of size " << var_data.array_value.size()
58 << " with id " << var_data.id;
59 break;
60 case PP_VARTYPE_ARRAY_BUFFER:
61 rtn << "ArrayBuffer of size " << var_data.buffer_value.length
62 << " with id " << var_data.id;
63 break;
64 default:
65 rtn << "resource of type " << var_data.type
66 << " with id " << var_data.id;
67 break;
68 }
69 return rtn.str();
70 }
71
72 void FakeVarManager::DestroyVarData(FakeVarData* var_data) {
73 // Release each PP_Var in the array
74
75 switch (var_data->type) {
76 case PP_VARTYPE_ARRAY: {
77 std::vector<PP_Var>& vector = var_data->array_value;
78 for (std::vector<PP_Var>::iterator it = vector.begin();
79 it != vector.end(); ++it) {
80 Release(*it);
81 }
82 vector.clear();
83 break;
84 }
85 case PP_VARTYPE_ARRAY_BUFFER:
86 free(var_data->buffer_value.ptr);
87 var_data->buffer_value.ptr = NULL;
88 var_data->buffer_value.length = 0;
89 default:
90 break;
91 }
92 }
93
94 FakeVarData* FakeVarManager::GetVarData(PP_Var var) {
95 VarMap::iterator iter = var_map_.find(var.value.as_id);
96 if (iter == var_map_.end())
97 return NULL;
98 return &iter->second;
99 }
100
101 void FakeVarManager::Release(PP_Var var) {
102 // From ppb_var.h:
103 // Release() removes a reference to given var, deleting it if the internal
104 // reference count becomes 0. If the given var is not a refcounted object,
105 // this function will do nothing so you can always call it no matter what
106 // the type.
107 FakeVarData* var_data = GetVarData(var);
108 if (!var_data) {
109 if (debug)
110 printf("Releasing simple var\n");
111 return;
112 }
113
114 EXPECT_GT(var_data->ref_count, 0)
115 << "Releasing freed " << Describe(*var_data);
116
117 var_data->ref_count--;
118 if (debug)
119 printf("Released %s [new refcount=%d]\n",
120 Describe(*var_data).c_str(),
121 var_data->ref_count);
122
123 if (var_data->ref_count == 0)
124 DestroyVarData(var_data);
125 }
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