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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SRC_NODE_ISOLATE_H_
#define SRC_NODE_ISOLATE_H_
#include "v8.h"
#include "v8-debug.h"
#include "uv.h"
#include "node_vars.h"
#include "node_object_wrap.h"
#include "ngx-queue.h"
#ifdef NDEBUG
# define NODE_ISOLATE_CHECK(ptr) ((void) (ptr))
#else
# include <assert.h>
# define NODE_ISOLATE_CHECK(ptr) \
do { \
node::Isolate* data_ = node::Isolate::GetCurrent(); \
assert(data_ == (ptr)); \
} \
while (0)
#endif
namespace node {
template <class T>
class Channel;
class IsolateWrap;
class IsolateChannel;
class IsolateMessage;
class IsolateDebugger;
class IsolateDebuggerMessage;
class Isolate {
public:
char** argv_;
int argc_;
uv_thread_t tid_;
enum {
kNone,
kDebug,
kDebugBrk
} debug_state;
IsolateDebugger* debugger_instance;
// Call this before instantiating any Isolate
static void Initialize();
static int Count();
typedef void (*AtExitCallback)(void* arg);
static v8::Handle<v8::Value> Send(const v8::Arguments& args);
static v8::Handle<v8::Value> Unref(const v8::Arguments& args);
static Isolate* GetCurrent() {
return reinterpret_cast<Isolate*>(v8::Isolate::GetCurrent()->GetData());
}
uv_loop_t* GetLoop() {
NODE_ISOLATE_CHECK(this);
return loop_;
}
v8::Isolate* GetV8Isolate() {
NODE_ISOLATE_CHECK(this);
return v8_isolate_;
}
v8::Handle<v8::Context> GetV8Context() {
NODE_ISOLATE_CHECK(this);
return v8_context_;
}
/* Register a handler that should run when the current isolate exits.
* Handlers run in LIFO order.
*/
void AtExit(AtExitCallback callback, void *arg);
struct globals* Globals();
unsigned int id_;
// This constructor is used for every non-main thread
Isolate();
~Isolate();
void Enter();
void Exit();
/* Shutdown the isolate. Call this method at thread death. */
void Dispose();
private:
friend class IsolateWrap;
struct AtExitCallbackInfo {
AtExitCallback callback_;
ngx_queue_t queue_;
void* arg_;
};
static void OnMessage(IsolateMessage*, void*);
// Forbid implicit constructors and copy constructors
void operator=(const Isolate&) {}
Isolate(const Isolate&) {}
ngx_queue_t isolate_list_; // linked list of all isolates
ngx_queue_t at_exit_callbacks_;
v8::Persistent<v8::Context> v8_context_;
v8::Isolate* v8_isolate_;
IsolateChannel* send_channel_;
IsolateChannel* recv_channel_;
uv_loop_t* loop_;
// Global variables for this isolate.
struct globals globals_;
bool globals_init_;
};
class IsolateDebugger : ObjectWrap {
public:
static void Initialize();
void Init();
static void InitCallback(uv_async_t* c, int status);
static v8::Handle<v8::Value> New(const v8::Arguments& args);
static IsolateDebugger* New(v8::Handle<v8::Value> init);
static v8::Handle<v8::Value> Write(const v8::Arguments& args);
static void DebugMessageHandler(const v8::Debug::Message& message);
static void MessageCallback(IsolateDebuggerMessage* msg, void*);
IsolateDebugger(v8::Handle<v8::Value> init);
~IsolateDebugger();
protected:
Isolate* host_;
uv_loop_t* host_loop_;
uv_async_t init_callback_;
v8::Persistent<v8::Value> init_callback_fn_;
bool initialized_;
Isolate* debuggee_;
v8::Isolate* debuggee_v8_;
struct debug_msg_s {
uint16_t* value;
int len;
IsolateDebugger* d;
};
Channel<IsolateDebuggerMessage*>* msg_channel_;
};
} // namespace node
#endif // SRC_NODE_ISOLATE_H_
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