2fd55667a6
We ported hashmap.h into libsampler as a workaround before, so the main focus of this patch is to reduce code duplication. This patch moves the hashmap into src/base as well as creates DefaultAllocationPolicy using malloc and free. BUG=v8:5050 LOG=n Review-Url: https://codereview.chromium.org/2010243003 Cr-Commit-Position: refs/heads/master@{#36873}
483 lines
16 KiB
C++
483 lines
16 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_D8_H_
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#define V8_D8_H_
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#ifndef V8_SHARED
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#include "src/allocation.h"
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#include "src/base/hashmap.h"
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#include "src/base/platform/time.h"
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#include "src/list.h"
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#else
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#include "include/v8.h"
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#include "src/base/compiler-specific.h"
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#endif // !V8_SHARED
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#include "src/base/once.h"
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namespace v8 {
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#ifndef V8_SHARED
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// A single counter in a counter collection.
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class Counter {
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public:
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static const int kMaxNameSize = 64;
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int32_t* Bind(const char* name, bool histogram);
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int32_t* ptr() { return &count_; }
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int32_t count() { return count_; }
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int32_t sample_total() { return sample_total_; }
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bool is_histogram() { return is_histogram_; }
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void AddSample(int32_t sample);
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private:
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int32_t count_;
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int32_t sample_total_;
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bool is_histogram_;
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uint8_t name_[kMaxNameSize];
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};
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// A set of counters and associated information. An instance of this
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// class is stored directly in the memory-mapped counters file if
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// the --map-counters options is used
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class CounterCollection {
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public:
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CounterCollection();
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Counter* GetNextCounter();
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private:
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static const unsigned kMaxCounters = 512;
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uint32_t magic_number_;
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uint32_t max_counters_;
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uint32_t max_name_size_;
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uint32_t counters_in_use_;
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Counter counters_[kMaxCounters];
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};
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class CounterMap {
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public:
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CounterMap(): hash_map_(Match) { }
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Counter* Lookup(const char* name) {
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base::HashMap::Entry* answer =
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hash_map_.Lookup(const_cast<char*>(name), Hash(name));
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if (!answer) return NULL;
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return reinterpret_cast<Counter*>(answer->value);
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}
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void Set(const char* name, Counter* value) {
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base::HashMap::Entry* answer =
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hash_map_.LookupOrInsert(const_cast<char*>(name), Hash(name));
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DCHECK(answer != NULL);
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answer->value = value;
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}
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class Iterator {
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public:
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explicit Iterator(CounterMap* map)
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: map_(&map->hash_map_), entry_(map_->Start()) { }
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void Next() { entry_ = map_->Next(entry_); }
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bool More() { return entry_ != NULL; }
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const char* CurrentKey() { return static_cast<const char*>(entry_->key); }
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Counter* CurrentValue() { return static_cast<Counter*>(entry_->value); }
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private:
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base::HashMap* map_;
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base::HashMap::Entry* entry_;
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};
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private:
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static int Hash(const char* name);
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static bool Match(void* key1, void* key2);
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base::HashMap hash_map_;
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};
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#endif // !V8_SHARED
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class SourceGroup {
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public:
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SourceGroup() :
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#ifndef V8_SHARED
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next_semaphore_(0),
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done_semaphore_(0),
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thread_(NULL),
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#endif // !V8_SHARED
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argv_(NULL),
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begin_offset_(0),
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end_offset_(0) {}
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~SourceGroup();
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void Begin(char** argv, int offset) {
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argv_ = const_cast<const char**>(argv);
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begin_offset_ = offset;
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}
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void End(int offset) { end_offset_ = offset; }
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void Execute(Isolate* isolate);
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#ifndef V8_SHARED
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void StartExecuteInThread();
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void WaitForThread();
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void JoinThread();
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private:
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class IsolateThread : public base::Thread {
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public:
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explicit IsolateThread(SourceGroup* group)
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: base::Thread(GetThreadOptions()), group_(group) {}
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virtual void Run() {
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group_->ExecuteInThread();
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}
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private:
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SourceGroup* group_;
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};
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static base::Thread::Options GetThreadOptions();
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void ExecuteInThread();
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base::Semaphore next_semaphore_;
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base::Semaphore done_semaphore_;
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base::Thread* thread_;
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#endif // !V8_SHARED
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void ExitShell(int exit_code);
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Local<String> ReadFile(Isolate* isolate, const char* name);
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const char** argv_;
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int begin_offset_;
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int end_offset_;
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};
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#ifndef V8_SHARED
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enum SerializationTag {
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kSerializationTagUndefined,
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kSerializationTagNull,
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kSerializationTagTrue,
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kSerializationTagFalse,
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kSerializationTagNumber,
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kSerializationTagString,
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kSerializationTagArray,
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kSerializationTagObject,
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kSerializationTagArrayBuffer,
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kSerializationTagTransferredArrayBuffer,
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kSerializationTagTransferredSharedArrayBuffer,
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};
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class SerializationData {
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public:
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SerializationData() {}
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~SerializationData();
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void WriteTag(SerializationTag tag);
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void WriteMemory(const void* p, int length);
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void WriteArrayBufferContents(const ArrayBuffer::Contents& contents);
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void WriteSharedArrayBufferContents(
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const SharedArrayBuffer::Contents& contents);
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template <typename T>
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void Write(const T& data) {
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WriteMemory(&data, sizeof(data));
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}
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SerializationTag ReadTag(int* offset) const;
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void ReadMemory(void* p, int length, int* offset) const;
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void ReadArrayBufferContents(ArrayBuffer::Contents* contents,
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int* offset) const;
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void ReadSharedArrayBufferContents(SharedArrayBuffer::Contents* contents,
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int* offset) const;
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template <typename T>
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T Read(int* offset) const {
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T value;
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ReadMemory(&value, sizeof(value), offset);
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return value;
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}
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private:
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i::List<uint8_t> data_;
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i::List<ArrayBuffer::Contents> array_buffer_contents_;
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i::List<SharedArrayBuffer::Contents> shared_array_buffer_contents_;
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};
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class SerializationDataQueue {
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public:
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void Enqueue(SerializationData* data);
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bool Dequeue(SerializationData** data);
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bool IsEmpty();
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void Clear();
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private:
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base::Mutex mutex_;
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i::List<SerializationData*> data_;
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};
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class Worker {
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public:
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Worker();
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~Worker();
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// Run the given script on this Worker. This function should only be called
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// once, and should only be called by the thread that created the Worker.
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void StartExecuteInThread(const char* script);
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// Post a message to the worker's incoming message queue. The worker will
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// take ownership of the SerializationData.
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// This function should only be called by the thread that created the Worker.
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void PostMessage(SerializationData* data);
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// Synchronously retrieve messages from the worker's outgoing message queue.
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// If there is no message in the queue, block until a message is available.
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// If there are no messages in the queue and the worker is no longer running,
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// return nullptr.
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// This function should only be called by the thread that created the Worker.
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SerializationData* GetMessage();
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// Terminate the worker's event loop. Messages from the worker that have been
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// queued can still be read via GetMessage().
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// This function can be called by any thread.
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void Terminate();
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// Terminate and join the thread.
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// This function can be called by any thread.
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void WaitForThread();
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private:
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class WorkerThread : public base::Thread {
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public:
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explicit WorkerThread(Worker* worker)
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: base::Thread(base::Thread::Options("WorkerThread")),
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worker_(worker) {}
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virtual void Run() { worker_->ExecuteInThread(); }
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private:
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Worker* worker_;
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};
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void ExecuteInThread();
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static void PostMessageOut(const v8::FunctionCallbackInfo<v8::Value>& args);
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base::Semaphore in_semaphore_;
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base::Semaphore out_semaphore_;
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SerializationDataQueue in_queue_;
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SerializationDataQueue out_queue_;
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base::Thread* thread_;
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char* script_;
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base::Atomic32 running_;
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};
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#endif // !V8_SHARED
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class ShellOptions {
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public:
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ShellOptions()
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: script_executed(false),
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send_idle_notification(false),
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invoke_weak_callbacks(false),
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omit_quit(false),
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stress_opt(false),
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stress_deopt(false),
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stress_runs(1),
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interactive_shell(false),
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test_shell(false),
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dump_heap_constants(false),
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expected_to_throw(false),
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mock_arraybuffer_allocator(false),
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num_isolates(1),
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compile_options(v8::ScriptCompiler::kNoCompileOptions),
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isolate_sources(NULL),
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icu_data_file(NULL),
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natives_blob(NULL),
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snapshot_blob(NULL) {}
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~ShellOptions() {
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delete[] isolate_sources;
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}
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bool use_interactive_shell() {
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return (interactive_shell || !script_executed) && !test_shell;
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}
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bool script_executed;
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bool send_idle_notification;
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bool invoke_weak_callbacks;
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bool omit_quit;
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bool stress_opt;
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bool stress_deopt;
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int stress_runs;
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bool interactive_shell;
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bool test_shell;
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bool dump_heap_constants;
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bool expected_to_throw;
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bool mock_arraybuffer_allocator;
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int num_isolates;
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v8::ScriptCompiler::CompileOptions compile_options;
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SourceGroup* isolate_sources;
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const char* icu_data_file;
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const char* natives_blob;
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const char* snapshot_blob;
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};
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#ifdef V8_SHARED
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class Shell {
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#else
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class Shell : public i::AllStatic {
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#endif // V8_SHARED
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public:
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enum SourceType { SCRIPT, MODULE };
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static MaybeLocal<Script> CompileString(
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Isolate* isolate, Local<String> source, Local<Value> name,
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v8::ScriptCompiler::CompileOptions compile_options,
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SourceType source_type);
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static bool ExecuteString(Isolate* isolate, Local<String> source,
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Local<Value> name, bool print_result,
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bool report_exceptions,
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SourceType source_type = SCRIPT);
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static const char* ToCString(const v8::String::Utf8Value& value);
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static void ReportException(Isolate* isolate, TryCatch* try_catch);
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static Local<String> ReadFile(Isolate* isolate, const char* name);
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static Local<Context> CreateEvaluationContext(Isolate* isolate);
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static int RunMain(Isolate* isolate, int argc, char* argv[], bool last_run);
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static int Main(int argc, char* argv[]);
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static void Exit(int exit_code);
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static void OnExit(Isolate* isolate);
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static void CollectGarbage(Isolate* isolate);
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static void EmptyMessageQueues(Isolate* isolate);
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#ifndef V8_SHARED
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// TODO(binji): stupid implementation for now. Is there an easy way to hash an
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// object for use in base::HashMap? By pointer?
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typedef i::List<Local<Object>> ObjectList;
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static bool SerializeValue(Isolate* isolate, Local<Value> value,
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const ObjectList& to_transfer,
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ObjectList* seen_objects,
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SerializationData* out_data);
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static MaybeLocal<Value> DeserializeValue(Isolate* isolate,
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const SerializationData& data,
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int* offset);
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static void CleanupWorkers();
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static int* LookupCounter(const char* name);
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static void* CreateHistogram(const char* name,
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int min,
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int max,
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size_t buckets);
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static void AddHistogramSample(void* histogram, int sample);
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static void MapCounters(v8::Isolate* isolate, const char* name);
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static void PerformanceNow(const v8::FunctionCallbackInfo<v8::Value>& args);
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#endif // !V8_SHARED
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static void RealmCurrent(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmOwner(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmGlobal(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmCreate(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmCreateAllowCrossRealmAccess(
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const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmDispose(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmSwitch(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmEval(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RealmSharedGet(Local<String> property,
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const PropertyCallbackInfo<Value>& info);
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static void RealmSharedSet(Local<String> property,
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Local<Value> value,
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const PropertyCallbackInfo<void>& info);
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static void Print(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void Write(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void QuitOnce(v8::FunctionCallbackInfo<v8::Value>* args);
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static void Quit(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void Version(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void Read(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void ReadBuffer(const v8::FunctionCallbackInfo<v8::Value>& args);
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static Local<String> ReadFromStdin(Isolate* isolate);
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static void ReadLine(const v8::FunctionCallbackInfo<v8::Value>& args) {
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args.GetReturnValue().Set(ReadFromStdin(args.GetIsolate()));
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}
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static void Load(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void WorkerNew(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void WorkerPostMessage(
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const v8::FunctionCallbackInfo<v8::Value>& args);
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static void WorkerGetMessage(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void WorkerTerminate(const v8::FunctionCallbackInfo<v8::Value>& args);
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// The OS object on the global object contains methods for performing
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// operating system calls:
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//
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// os.system("program_name", ["arg1", "arg2", ...], timeout1, timeout2) will
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// run the command, passing the arguments to the program. The standard output
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// of the program will be picked up and returned as a multiline string. If
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// timeout1 is present then it should be a number. -1 indicates no timeout
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// and a positive number is used as a timeout in milliseconds that limits the
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// time spent waiting between receiving output characters from the program.
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// timeout2, if present, should be a number indicating the limit in
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// milliseconds on the total running time of the program. Exceptions are
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// thrown on timeouts or other errors or if the exit status of the program
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// indicates an error.
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//
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// os.chdir(dir) changes directory to the given directory. Throws an
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// exception/ on error.
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//
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// os.setenv(variable, value) sets an environment variable. Repeated calls to
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// this method leak memory due to the API of setenv in the standard C library.
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//
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// os.umask(alue) calls the umask system call and returns the old umask.
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//
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// os.mkdirp(name, mask) creates a directory. The mask (if present) is anded
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// with the current umask. Intermediate directories are created if necessary.
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// An exception is not thrown if the directory already exists. Analogous to
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// the "mkdir -p" command.
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static void System(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void ChangeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void SetEnvironment(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void UnsetEnvironment(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void SetUMask(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void MakeDirectory(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void RemoveDirectory(const v8::FunctionCallbackInfo<v8::Value>& args);
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static void AddOSMethods(v8::Isolate* isolate,
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Local<ObjectTemplate> os_template);
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static const char* kPrompt;
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static ShellOptions options;
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static ArrayBuffer::Allocator* array_buffer_allocator;
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private:
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static Global<Context> evaluation_context_;
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static base::OnceType quit_once_;
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#ifndef V8_SHARED
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static Global<Function> stringify_function_;
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static CounterMap* counter_map_;
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// We statically allocate a set of local counters to be used if we
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// don't want to store the stats in a memory-mapped file
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static CounterCollection local_counters_;
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static CounterCollection* counters_;
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static base::OS::MemoryMappedFile* counters_file_;
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static base::LazyMutex context_mutex_;
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static const base::TimeTicks kInitialTicks;
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static base::LazyMutex workers_mutex_;
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static bool allow_new_workers_;
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static i::List<Worker*> workers_;
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static i::List<SharedArrayBuffer::Contents> externalized_shared_contents_;
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static void WriteIgnitionDispatchCountersFile(v8::Isolate* isolate);
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static Counter* GetCounter(const char* name, bool is_histogram);
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static Local<String> Stringify(Isolate* isolate, Local<Value> value);
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#endif // !V8_SHARED
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static void Initialize(Isolate* isolate);
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static void RunShell(Isolate* isolate);
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static bool SetOptions(int argc, char* argv[]);
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static Local<ObjectTemplate> CreateGlobalTemplate(Isolate* isolate);
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static MaybeLocal<Context> CreateRealm(
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const v8::FunctionCallbackInfo<v8::Value>& args);
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};
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} // namespace v8
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#endif // V8_D8_H_
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