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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 | 2 |
3 #include <stdlib.h> | 3 #include <stdlib.h> |
4 | 4 |
5 #include "v8.h" | 5 #include "v8.h" |
6 | 6 |
7 #include "execution.h" | 7 #include "execution.h" |
8 #include "factory.h" | 8 #include "factory.h" |
9 #include "macro-assembler.h" | 9 #include "macro-assembler.h" |
10 #include "global-handles.h" | 10 #include "global-handles.h" |
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2176 CHECK(ic_before->ic_state() == MEGAMORPHIC); | 2176 CHECK(ic_before->ic_state() == MEGAMORPHIC); |
2177 | 2177 |
2178 // Fire context dispose notification. | 2178 // Fire context dispose notification. |
2179 v8::V8::ContextDisposedNotification(); | 2179 v8::V8::ContextDisposedNotification(); |
2180 SimulateIncrementalMarking(); | 2180 SimulateIncrementalMarking(); |
2181 HEAP->CollectAllGarbage(Heap::kNoGCFlags); | 2181 HEAP->CollectAllGarbage(Heap::kNoGCFlags); |
2182 | 2182 |
2183 Code* ic_after = FindFirstIC(f->shared()->code(), Code::LOAD_IC); | 2183 Code* ic_after = FindFirstIC(f->shared()->code(), Code::LOAD_IC); |
2184 CHECK(ic_after->ic_state() == UNINITIALIZED); | 2184 CHECK(ic_after->ic_state() == UNINITIALIZED); |
2185 } | 2185 } |
2186 | |
2187 | |
2188 class SourceResource: public v8::String::ExternalAsciiStringResource { | |
2189 public: | |
2190 explicit SourceResource(const char* data, int* counter) | |
2191 : data_(data), length_(strlen(data)), counter_(counter) { } | |
2192 | |
2193 virtual void Dispose() { | |
2194 i::DeleteArray(data_); | |
2195 if (counter_ != NULL) ++*counter_; | |
2196 } | |
2197 | |
2198 const char* data() const { return data_; } | |
2199 | |
2200 size_t length() const { return length_; } | |
2201 | |
2202 private: | |
2203 const char* data_; | |
2204 size_t length_; | |
2205 int* counter_; | |
2206 }; | |
2207 | |
2208 | |
2209 | |
2210 TEST(ReleaseStackTraceData) { | |
2211 // Test that the data retained by the Error.stack accessor is released | |
2212 // after the first time the accessor is fired. We use external string | |
2213 // to check whether the data is being released since the external string | |
2214 // resource's callback is fired when the external string is GC'ed. | |
2215 InitializeVM(); | |
2216 v8::HandleScope scope; | |
2217 static const char* source = "var error = 1; " | |
2218 "try { " | |
2219 " throw new Error(); " | |
2220 "} catch (e) { " | |
2221 " error = e; " | |
2222 "} "; | |
2223 int counter = 0; | |
2224 SourceResource* resource = new SourceResource(i::StrDup(source), &counter); | |
2225 { | |
2226 v8::HandleScope scope; | |
2227 v8::Handle<v8::String> source_string = v8::String::NewExternal(resource); | |
2228 v8::Script::Compile(source_string)->Run(); | |
2229 CHECK(counter == 0); | |
2230 } | |
2231 HEAP->CollectAllAvailableGarbage(); | |
2232 CHECK(counter == 0); // External source is being retained by the stack trace. | |
2233 | |
2234 CompileRun("error.stack;"); | |
2235 HEAP->CollectAllAvailableGarbage(); | |
2236 CHECK(counter == 1); // External source has been released. | |
2237 | |
2238 delete resource; | |
Vyacheslav Egorov (Google)
2012/08/28 16:43:43
thanks for writing a test!
| |
2239 } | |
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