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Side by Side Diff: third_party/WebKit/Source/bindings/core/v8/V8RecursionScope.h

Issue 1527493002: Revert of Response construction with a ReadableStream (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years ago
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1 /* 1 /*
2 * Copyright (C) 2011 Google Inc. All rights reserved. 2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are 5 * modification, are permitted provided that the following conditions are
6 * met: 6 * met:
7 * 7 *
8 * * Redistributions of source code must retain the above copyright 8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above 10 * * Redistributions in binary form must reproduce the above
(...skipping 14 matching lines...) Expand all
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */ 29 */
30 30
31 #ifndef V8RecursionScope_h 31 #ifndef V8RecursionScope_h
32 #define V8RecursionScope_h 32 #define V8RecursionScope_h
33 33
34 #include "bindings/core/v8/V8PerIsolateData.h" 34 #include "bindings/core/v8/V8PerIsolateData.h"
35 #include "core/CoreExport.h"
36 #include "platform/ScriptForbiddenScope.h" 35 #include "platform/ScriptForbiddenScope.h"
37 #include "wtf/Noncopyable.h" 36 #include "wtf/Noncopyable.h"
38 #include <v8.h> 37 #include <v8.h>
39 38
40 namespace blink { 39 namespace blink {
41 40
42 // C++ calls into script contexts which are "owned" by WebKit (created in a 41 // C++ calls into script contexts which are "owned" by WebKit (created in a
43 // process where WebKit.cpp initializes v8) must declare their type: 42 // process where WebKit.cpp initializes v8) must declare their type:
44 // 43 //
45 // 1. Calls into page/author script from a frame 44 // 1. Calls into page/author script from a frame
46 // 2. Calls into page/author script from a worker 45 // 2. Calls into page/author script from a worker
47 // 3. Calls into internal script (typically setup/teardown work) 46 // 3. Calls into internal script (typically setup/teardown work)
48 // 47 //
49 // Debug-time checking of this is enforced via this class. 48 // Debug-time checking of this is enforced via this class.
50 // 49 //
51 // Calls of type (1) should generally go through ScriptController, as inspector 50 // Calls of type (1) should generally go through ScriptController, as inspector
52 // instrumentation is needed. ScriptController allocates V8RecursionScope for yo u. 51 // instrumentation is needed. ScriptController allocates V8RecursionScope for yo u.
53 // Calls of type (2) should always stack-allocate a V8RecursionScope in the same 52 // Calls of type (2) should always stack-allocate a V8RecursionScope in the same
54 // block as the call into script. Calls of type (3) should stack allocate a 53 // block as the call into script. Calls of type (3) should stack allocate a
55 // V8RecursionScope::MicrotaskSuppression -- this skips work that is spec'd to 54 // V8RecursionScope::MicrotaskSuppression -- this skips work that is spec'd to
56 // happen at the end of the outer-most script stack frame of calls into page scr ipt: 55 // happen at the end of the outer-most script stack frame of calls into page scr ipt:
57 // 56 //
58 // http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkp oint 57 // http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkp oint
59 class CORE_EXPORT V8RecursionScope { 58 class V8RecursionScope {
60 STACK_ALLOCATED(); 59 STACK_ALLOCATED();
61 public: 60 public:
62 explicit V8RecursionScope(v8::Isolate* isolate) 61 explicit V8RecursionScope(v8::Isolate* isolate)
63 : m_isolate(isolate) 62 : m_isolate(isolate)
64 { 63 {
65 RELEASE_ASSERT(!ScriptForbiddenScope::isScriptForbidden()); 64 RELEASE_ASSERT(!ScriptForbiddenScope::isScriptForbidden());
66 V8PerIsolateData::from(m_isolate)->incrementRecursionLevel(); 65 V8PerIsolateData::from(m_isolate)->incrementRecursionLevel();
67 // If you want V8 to autorun microtasks, this class needs to have a 66 // If you want V8 to autorun microtasks, this class needs to have a
68 // v8::Isolate::SuppressMicrotaskExecutionScope member. 67 // v8::Isolate::SuppressMicrotaskExecutionScope member.
69 ASSERT(!isolate->WillAutorunMicrotasks()); 68 ASSERT(!isolate->WillAutorunMicrotasks());
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117 116
118 private: 117 private:
119 void didLeaveScriptContext(); 118 void didLeaveScriptContext();
120 119
121 v8::Isolate* m_isolate; 120 v8::Isolate* m_isolate;
122 }; 121 };
123 122
124 } // namespace blink 123 } // namespace blink
125 124
126 #endif // V8RecursionScope_h 125 #endif // V8RecursionScope_h
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