86 lines
3.4 KiB
C++
86 lines
3.4 KiB
C++
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "allocation-site-scopes.h"
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namespace v8 {
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namespace internal {
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Handle<AllocationSite> AllocationSiteCreationContext::EnterNewScope() {
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Handle<AllocationSite> scope_site;
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if (top().is_null()) {
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// We are creating the top level AllocationSite as opposed to a nested
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// AllocationSite.
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InitializeTraversal(isolate()->factory()->NewAllocationSite());
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scope_site = Handle<AllocationSite>(*top(), isolate());
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if (FLAG_trace_creation_allocation_sites) {
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PrintF("*** Creating top level AllocationSite %p\n",
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static_cast<void*>(*scope_site));
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}
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} else {
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ASSERT(!current().is_null());
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scope_site = isolate()->factory()->NewAllocationSite();
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if (FLAG_trace_creation_allocation_sites) {
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PrintF("Creating nested site (top, current, new) (%p, %p, %p)\n",
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static_cast<void*>(*top()),
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static_cast<void*>(*current()),
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static_cast<void*>(*scope_site));
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}
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current()->set_nested_site(*scope_site);
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update_current_site(*scope_site);
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}
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ASSERT(!scope_site.is_null());
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return scope_site;
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}
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void AllocationSiteCreationContext::ExitScope(
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Handle<AllocationSite> scope_site,
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Handle<JSObject> object) {
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if (!object.is_null() && !object->IsFailure()) {
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bool top_level = !scope_site.is_null() &&
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top().is_identical_to(scope_site);
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scope_site->set_transition_info(*object);
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if (FLAG_trace_creation_allocation_sites) {
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if (top_level) {
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PrintF("*** Setting AllocationSite %p transition_info %p\n",
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static_cast<void*>(*scope_site),
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static_cast<void*>(*object));
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} else {
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PrintF("Setting AllocationSite (%p, %p) transition_info %p\n",
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static_cast<void*>(*top()),
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static_cast<void*>(*scope_site),
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static_cast<void*>(*object));
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}
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}
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}
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}
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} } // namespace v8::internal
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