blob: 7897af8c07ec63e10e620e2fe0509ab18918471c [file] [log] [blame] [edit]
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
#include "vm/allocation.h"
#include "platform/assert.h"
#include "vm/isolate.h"
#include "vm/thread.h"
#include "vm/zone.h"
namespace dart {
static void* Allocate(uword size, Zone* zone) {
ASSERT(zone != nullptr);
if (size > static_cast<uword>(kIntptrMax)) {
FATAL("ZoneAllocated object has unexpectedly large size %" Pu "", size);
}
return reinterpret_cast<void*>(zone->AllocUnsafe(size));
}
void* ZoneAllocated::operator new(uword size) {
return Allocate(size, Thread::Current()->zone());
}
void* ZoneAllocated::operator new(uword size, Zone* zone) {
return Allocate(size, zone);
}
StackResource::~StackResource() {
if (thread_ != nullptr) {
StackResource* top = thread_->top_resource();
ASSERT(top == this);
thread_->set_top_resource(previous_);
}
#if defined(DEBUG)
if (thread_ != nullptr) {
ASSERT(Thread::Current() == thread_);
}
#endif
}
void StackResource::Init(ThreadState* thread) {
// We can only have longjumps and exceptions when there is a current
// thread and isolate. If there is no current thread, we don't need to
// protect this case.
if (thread != nullptr) {
ASSERT(Thread::Current() == thread);
thread_ = thread;
previous_ = thread_->top_resource();
ASSERT((previous_ == nullptr) || (previous_->thread_ == thread));
thread_->set_top_resource(this);
}
}
void StackResource::UnwindAbove(ThreadState* thread, StackResource* new_top) {
StackResource* current_resource = thread->top_resource();
while (current_resource != new_top) {
current_resource->~StackResource();
current_resource = thread->top_resource();
}
}
} // namespace dart