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v8/test/mkgrokdump/mkgrokdump.cc
Dan Elphick 30f409c751 [heap] Move BaseSpace into base-space.h 
Bug: v8:10473
Change-Id: Ic53130ca5103ba219329f7b204b218bc021f07f3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2252178
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68427}
2020-06-19 09:38:24 +00:00

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// Copyright 2012 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdio.h>
#include "include/libplatform/libplatform.h"
#include "include/v8.h"
#include "src/execution/frames.h"
#include "src/execution/isolate.h"
#include "src/heap/heap-inl.h"
#include "src/heap/paged-spaces-inl.h"
#include "src/heap/read-only-heap.h"
#include "src/heap/spaces.h"
#include "src/objects/objects-inl.h"
namespace v8 {
static const char* kHeader =
"# Copyright 2019 the V8 project authors. All rights reserved.\n"
"# Use of this source code is governed by a BSD-style license that can\n"
"# be found in the LICENSE file.\n"
"\n"
"# This file is automatically generated by mkgrokdump and should not\n"
"# be modified manually.\n"
"\n"
"# List of known V8 instance types.\n";
// Debug builds emit debug code, affecting code object sizes.
#ifndef DEBUG
static const char* kBuild = "shipping";
#else
static const char* kBuild = "non-shipping";
#endif
class MockArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
public:
void* Allocate(size_t length) override { return nullptr; }
void* AllocateUninitialized(size_t length) override { return nullptr; }
void Free(void* p, size_t) override {}
};
static void DumpKnownMap(FILE* out, i::Heap* heap, const char* space_name,
i::HeapObject object) {
#define RO_ROOT_LIST_CASE(type, name, CamelName) \
if (root_name == nullptr && object == roots.name()) root_name = #CamelName;
#define MUTABLE_ROOT_LIST_CASE(type, name, CamelName) \
if (root_name == nullptr && object == heap->name()) root_name = #CamelName;
i::ReadOnlyRoots roots(heap);
const char* root_name = nullptr;
i::Map map = i::Map::cast(object);
intptr_t root_ptr =
static_cast<intptr_t>(map.ptr()) & (i::Page::kPageSize - 1);
READ_ONLY_ROOT_LIST(RO_ROOT_LIST_CASE)
MUTABLE_ROOT_LIST(MUTABLE_ROOT_LIST_CASE)
if (root_name == nullptr) return;
i::PrintF(out, " (\"%s\", 0x%05" V8PRIxPTR "): (%d, \"%s\"),\n", space_name,
root_ptr, map.instance_type(), root_name);
#undef MUTABLE_ROOT_LIST_CASE
#undef RO_ROOT_LIST_CASE
}
static void DumpKnownObject(FILE* out, i::Heap* heap, const char* space_name,
i::HeapObject object) {
#define RO_ROOT_LIST_CASE(type, name, CamelName) \
if (root_name == nullptr && object == roots.name()) { \
root_name = #CamelName; \
root_index = i::RootIndex::k##CamelName; \
}
#define ROOT_LIST_CASE(type, name, CamelName) \
if (root_name == nullptr && object == heap->name()) { \
root_name = #CamelName; \
root_index = i::RootIndex::k##CamelName; \
}
i::ReadOnlyRoots roots(heap);
const char* root_name = nullptr;
i::RootIndex root_index = i::RootIndex::kFirstSmiRoot;
intptr_t root_ptr = object.ptr() & (i::Page::kPageSize - 1);
STRONG_READ_ONLY_ROOT_LIST(RO_ROOT_LIST_CASE)
MUTABLE_ROOT_LIST(ROOT_LIST_CASE)
if (root_name == nullptr) return;
if (!i::RootsTable::IsImmortalImmovable(root_index)) return;
i::PrintF(out, " (\"%s\", 0x%05" V8PRIxPTR "): \"%s\",\n", space_name,
root_ptr, root_name);
#undef ROOT_LIST_CASE
#undef RO_ROOT_LIST_CASE
}
static void DumpSpaceFirstPageAddress(FILE* out, i::BaseSpace* space,
i::Address first_page) {
const char* name = space->name();
i::Tagged_t compressed = i::CompressTagged(first_page);
uintptr_t unsigned_compressed = static_cast<uint32_t>(compressed);
i::PrintF(out, " 0x%08" V8PRIxPTR ": \"%s\",\n", unsigned_compressed, name);
}
template <typename SpaceT>
static void DumpSpaceFirstPageAddress(FILE* out, SpaceT* space) {
i::Address first_page = space->FirstPageAddress();
DumpSpaceFirstPageAddress(out, space, first_page);
}
static int DumpHeapConstants(FILE* out, const char* argv0) {
// Start up V8.
std::unique_ptr<v8::Platform> platform = v8::platform::NewDefaultPlatform();
v8::V8::InitializePlatform(platform.get());
v8::V8::Initialize();
v8::V8::InitializeExternalStartupData(argv0);
Isolate::CreateParams create_params;
MockArrayBufferAllocator mock_arraybuffer_allocator;
create_params.array_buffer_allocator = &mock_arraybuffer_allocator;
Isolate* isolate = Isolate::New(create_params);
{
Isolate::Scope scope(isolate);
i::Heap* heap = reinterpret_cast<i::Isolate*>(isolate)->heap();
i::ReadOnlyHeap* read_only_heap =
reinterpret_cast<i::Isolate*>(isolate)->read_only_heap();
i::PrintF(out, "%s", kHeader);
#define DUMP_TYPE(T) i::PrintF(out, " %d: \"%s\",\n", i::T, #T);
i::PrintF(out, "INSTANCE_TYPES = {\n");
INSTANCE_TYPE_LIST(DUMP_TYPE)
i::PrintF(out, "}\n");
#undef DUMP_TYPE
{
// Dump the KNOWN_MAP table to the console.
i::PrintF(out, "\n# List of known V8 maps.\n");
i::PrintF(out, "KNOWN_MAPS = {\n");
i::ReadOnlyHeapObjectIterator ro_iterator(read_only_heap);
for (i::HeapObject object = ro_iterator.Next(); !object.is_null();
object = ro_iterator.Next()) {
if (!object.IsMap()) continue;
DumpKnownMap(out, heap, i::BaseSpace::GetSpaceName(i::RO_SPACE),
object);
}
i::PagedSpaceObjectIterator iterator(heap, heap->map_space());
for (i::HeapObject object = iterator.Next(); !object.is_null();
object = iterator.Next()) {
if (!object.IsMap()) continue;
DumpKnownMap(out, heap, i::BaseSpace::GetSpaceName(i::MAP_SPACE),
object);
}
i::PrintF(out, "}\n");
}
{
// Dump the KNOWN_OBJECTS table to the console.
i::PrintF(out, "\n# List of known V8 objects.\n");
i::PrintF(out, "KNOWN_OBJECTS = {\n");
i::ReadOnlyHeapObjectIterator ro_iterator(read_only_heap);
for (i::HeapObject object = ro_iterator.Next(); !object.is_null();
object = ro_iterator.Next()) {
// Skip read-only heap maps, they will be reported elsewhere.
if (object.IsMap()) continue;
DumpKnownObject(out, heap, i::BaseSpace::GetSpaceName(i::RO_SPACE),
object);
}
i::PagedSpaceIterator spit(heap);
for (i::PagedSpace* s = spit.Next(); s != nullptr; s = spit.Next()) {
i::PagedSpaceObjectIterator it(heap, s);
// Code objects are generally platform-dependent.
if (s->identity() == i::CODE_SPACE || s->identity() == i::MAP_SPACE)
continue;
const char* sname = s->name();
for (i::HeapObject o = it.Next(); !o.is_null(); o = it.Next()) {
DumpKnownObject(out, heap, sname, o);
}
}
i::PrintF(out, "}\n");
}
if (COMPRESS_POINTERS_BOOL) {
// Dump a list of addresses for the first page of each space that contains
// objects in the other tables above. This is only useful if two
// assumptions hold:
// 1. Those pages are positioned deterministically within the heap
// reservation block during snapshot deserialization.
// 2. Those pages cannot ever be moved (such as by compaction).
i::PrintF(out,
"\n# Lower 32 bits of first page addresses for various heap "
"spaces.\n");
i::PrintF(out, "HEAP_FIRST_PAGES = {\n");
i::PagedSpaceIterator it(heap);
for (i::PagedSpace* s = it.Next(); s != nullptr; s = it.Next()) {
// Code page is different on Windows vs Linux (bug v8:9844), so skip it.
if (s->identity() == i::CODE_SPACE) {
continue;
}
DumpSpaceFirstPageAddress(out, s);
}
DumpSpaceFirstPageAddress(out, read_only_heap->read_only_space());
i::PrintF(out, "}\n");
}
// Dump frame markers
i::PrintF(out, "\n# List of known V8 Frame Markers.\n");
#define DUMP_MARKER(T, class) i::PrintF(out, " \"%s\",\n", #T);
i::PrintF(out, "FRAME_MARKERS = (\n");
STACK_FRAME_TYPE_LIST(DUMP_MARKER)
i::PrintF(out, ")\n");
#undef DUMP_MARKER
}
i::PrintF(out, "\n# This set of constants is generated from a %s build.\n",
kBuild);
// Teardown.
isolate->Dispose();
v8::V8::ShutdownPlatform();
return 0;
}
} // namespace v8
int main(int argc, char* argv[]) {
FILE* out = stdout;
if (argc > 2 && strcmp(argv[1], "--outfile") == 0) {
out = fopen(argv[2], "wb");
}
return v8::DumpHeapConstants(out, argv[0]);
}
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