1// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "vm/allocation.h"
6
7#include "platform/assert.h"
8#include "vm/isolate.h"
9#include "vm/thread.h"
10#include "vm/zone.h"
11
12namespace dart {
13
14static void* Allocate(uword size, Zone* zone) {
15 ASSERT(zone != NULL);
16 if (size > static_cast<uword>(kIntptrMax)) {
17 FATAL1("ZoneAllocated object has unexpectedly large size %" Pu "", size);
18 }
19 return reinterpret_cast<void*>(zone->AllocUnsafe(size));
20}
21
22void* ZoneAllocated::operator new(uword size) {
23 return Allocate(size, Thread::Current()->zone());
24}
25
26void* ZoneAllocated::operator new(uword size, Zone* zone) {
27 ASSERT(Thread::Current()->ZoneIsOwnedByThread(zone));
28 return Allocate(size, zone);
29}
30
31StackResource::~StackResource() {
32 if (thread_ != NULL) {
33 StackResource* top = thread_->top_resource();
34 ASSERT(top == this);
35 thread_->set_top_resource(previous_);
36 }
37#if defined(DEBUG)
38 if (thread_ != NULL) {
39 ASSERT(Thread::Current() == thread_);
40 }
41#endif
42}
43
44void StackResource::Init(ThreadState* thread) {
45 // We can only have longjumps and exceptions when there is a current
46 // thread and isolate. If there is no current thread, we don't need to
47 // protect this case.
48 // TODO(23807): Eliminate this special case.
49 if (thread != NULL) {
50 ASSERT(Thread::Current() == thread);
51 thread_ = thread;
52 previous_ = thread_->top_resource();
53 ASSERT((previous_ == NULL) || (previous_->thread_ == thread));
54 thread_->set_top_resource(this);
55 }
56}
57
58void StackResource::UnwindAbove(ThreadState* thread, StackResource* new_top) {
59 StackResource* current_resource = thread->top_resource();
60 while (current_resource != new_top) {
61 current_resource->~StackResource();
62 current_resource = thread->top_resource();
63 }
64}
65
66} // namespace dart
67