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Difference between revisions of "JSDT/Debug/JavaScript Debug Interface"

< JSDT‎ | Debug
Line 20: Line 20:
 
The following events can be send by the VM:
 
The following events can be send by the VM:
  
VM Death
+
* VM Death
VM Disconnect
+
* VM Disconnect
Breakpoint
+
* Breakpoint
Debugger Statement
+
* Debugger Statement
Exception
+
* Exception
Script Load
+
* Script Load
Step
+
* Step
Suspend
+
* Suspend
Thread Enter
+
* Thread Enter
Thread Exit
+
* Thread Exit
 
+
  
 
== Requests ==
 
== Requests ==
Line 36: Line 35:
 
The debugger can create and send requests to the VM through the JSDI to get more information on the state of the VM or to modify it.  The following types of requests are supported:
 
The debugger can create and send requests to the VM through the JSDI to get more information on the state of the VM or to modify it.  The following types of requests are supported:
  
VM Death
+
* VM Death
VM Disconnect
+
* VM Disconnect
 
+
* Breakpoint
Breakpoint
+
* Debugger Statement
Debugger Statement
+
* Exception
Exception
+
* Script Load
Script Load
+
* Step
Step
+
* Suspend
Suspend
+
* Thread Enter
Thread Enter
+
* Thread Exst
Thread Exst
+
 
+
 
+
 
+
 
+
  
 
== Values ==
 
== Values ==

Revision as of 16:57, 7 June 2010

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Overview

The JSDI specifies a format in which a debugger can communicate with a running virtual machine (VM). This includes describing methods to connect the VM and debugger, what events the vm can send to describe changes in state, what requests the debugger can make to alter the state and what values can be used to describe the state.

Connectors

A connector is a method of connecting a debugger and a VM. Connectors must provide an ID and may have a name and description. To customize the behaviour of the connector a map of arguments may be provided, mapping string argument keys to their values.

JSDI specifies three forms of connectors

  1. Listening Connector - When launched, waits for a vm to connect
  2. Attaching Connector - Connects to an already running VM
  3. Launching Connector - Launches a VM and connects to it

Events

The VM will fire events to

The following events can be send by the VM:

  • VM Death
  • VM Disconnect
  • Breakpoint
  • Debugger Statement
  • Exception
  • Script Load
  • Step
  • Suspend
  • Thread Enter
  • Thread Exit

Requests

The debugger can create and send requests to the VM through the JSDI to get more information on the state of the VM or to modify it. The following types of requests are supported:

  • VM Death
  • VM Disconnect
  • Breakpoint
  • Debugger Statement
  • Exception
  • Script Load
  • Step
  • Suspend
  • Thread Enter
  • Thread Exst

Values

The following value types are specified by the JSDI.

  • Null
  • Undefined
  • Object Reference
    • Object reference
    • Array reference
    • Function reference
  • Boolean
  • Number
  • String

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