mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 00:13:50 +00:00
![Ryan Macnak](/assets/img/avatar_default.png)
Don't allocate zones, timeline events or profile samples in the compressible region, since these allocations don't yeild compressed pointers and are competing for a limited resource. TEST=ci Bug: b/196510517 Change-Id: I4fc2f0d67060f927fa10d241b15b1cae3b73d919 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212400 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
// 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/virtual_memory.h"
|
|
#include "platform/assert.h"
|
|
#include "vm/heap/heap.h"
|
|
#include "vm/unit_test.h"
|
|
#include "vm/virtual_memory_compressed.h"
|
|
|
|
namespace dart {
|
|
|
|
bool IsZero(char* begin, char* end) {
|
|
for (char* current = begin; current < end; ++current) {
|
|
if (*current != 0) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
VM_UNIT_TEST_CASE(AllocateVirtualMemory) {
|
|
const intptr_t kVirtualMemoryBlockSize = 64 * KB;
|
|
VirtualMemory* vm =
|
|
VirtualMemory::Allocate(kVirtualMemoryBlockSize, false, false, "test");
|
|
EXPECT(vm != NULL);
|
|
EXPECT(vm->address() != NULL);
|
|
EXPECT_EQ(vm->start(), reinterpret_cast<uword>(vm->address()));
|
|
EXPECT_EQ(kVirtualMemoryBlockSize, vm->size());
|
|
EXPECT_EQ(vm->start() + kVirtualMemoryBlockSize, vm->end());
|
|
EXPECT(vm->Contains(vm->start()));
|
|
EXPECT(vm->Contains(vm->start() + 1));
|
|
EXPECT(vm->Contains(vm->start() + kVirtualMemoryBlockSize - 1));
|
|
EXPECT(vm->Contains(vm->start() + (kVirtualMemoryBlockSize / 2)));
|
|
EXPECT(!vm->Contains(vm->start() - 1));
|
|
EXPECT(!vm->Contains(vm->end()));
|
|
EXPECT(!vm->Contains(vm->end() + 1));
|
|
EXPECT(!vm->Contains(0));
|
|
EXPECT(!vm->Contains(static_cast<uword>(-1)));
|
|
|
|
char* buf = reinterpret_cast<char*>(vm->address());
|
|
EXPECT(IsZero(buf, buf + vm->size()));
|
|
buf[0] = 'a';
|
|
buf[1] = 'c';
|
|
buf[2] = '/';
|
|
buf[3] = 'd';
|
|
buf[4] = 'c';
|
|
buf[5] = 0;
|
|
EXPECT_STREQ("ac/dc", buf);
|
|
|
|
delete vm;
|
|
}
|
|
|
|
VM_UNIT_TEST_CASE(AllocateAlignedVirtualMemory) {
|
|
intptr_t kHeapPageSize = kOldPageSize;
|
|
intptr_t kVirtualPageSize = 4096;
|
|
|
|
intptr_t kIterations = kHeapPageSize / kVirtualPageSize;
|
|
for (intptr_t i = 0; i < kIterations; i++) {
|
|
VirtualMemory* vm = VirtualMemory::AllocateAligned(
|
|
kHeapPageSize, kHeapPageSize, false, false, "test");
|
|
EXPECT(Utils::IsAligned(vm->start(), kHeapPageSize));
|
|
EXPECT_EQ(kHeapPageSize, vm->size());
|
|
delete vm;
|
|
}
|
|
}
|
|
|
|
VM_UNIT_TEST_CASE(FreeVirtualMemory) {
|
|
// Reservations should always be handed back to OS upon destruction.
|
|
const intptr_t kVirtualMemoryBlockSize = 10 * MB;
|
|
const intptr_t kIterations = 900; // Enough to exhaust 32-bit address space.
|
|
for (intptr_t i = 0; i < kIterations; ++i) {
|
|
VirtualMemory* vm =
|
|
VirtualMemory::Allocate(kVirtualMemoryBlockSize, false, false, "test");
|
|
delete vm;
|
|
}
|
|
// Check that truncation does not introduce leaks.
|
|
for (intptr_t i = 0; i < kIterations; ++i) {
|
|
VirtualMemory* vm =
|
|
VirtualMemory::Allocate(kVirtualMemoryBlockSize, false, false, "test");
|
|
vm->Truncate(kVirtualMemoryBlockSize / 2);
|
|
delete vm;
|
|
}
|
|
for (intptr_t i = 0; i < kIterations; ++i) {
|
|
VirtualMemory* vm =
|
|
VirtualMemory::Allocate(kVirtualMemoryBlockSize, true, false, "test");
|
|
vm->Truncate(0);
|
|
delete vm;
|
|
}
|
|
}
|
|
|
|
} // namespace dart
|