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53bcba3368
IGUIObject: Cache the JSObject*, to prevent some frequent allocation while running GUI scripts. JSInterface_IGUIObject: Fixed garbage collection issues. JSInterface_IGUIObject, ScriptGlue: Changed to the JS_THREADSAFE form of JS_GetClass. Util: Avoid startup warnings on Linux caused by using unimplemented cpu_* functions that aren't needed for anything important yet. sysdep/unix: Changed to native line endings. This was SVN commit r5154.
403 lines
12 KiB
C++
403 lines
12 KiB
C++
#include "precompiled.h"
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/*
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* wxJavaScript - process.cpp
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*
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* Copyright (c) 2002-2007 Franky Braem and the wxJavaScript project
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*
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* Project Info: http://www.wxjavascript.net or http://wxjs.sourceforge.net
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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* $Id: process.cpp 598 2007-03-07 20:13:28Z fbraem $
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*/
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#include <wx/wxprec.h>
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#ifndef WX_PRECOMP
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#include <wx/wx.h>
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#endif
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#include "../common/main.h"
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#include "process.h"
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#include "stream.h"
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#include "istream.h"
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#include "ostream.h"
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using namespace wxjs;
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using namespace wxjs::io;
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Process::Process( JSContext *cx
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, JSObject *obj
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, int flags) : wxProcess(flags)
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{
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}
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Process::~Process()
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{
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}
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/***
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* <file>process</file>
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* <module>io</module>
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* <class name="wxProcess" version="0.9.5">
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* The objects of this class are used in conjunction with the @wxExecute function.
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* When a wxProcess object is passed to @wxExecute(), its @wxProcess#onTerminate event
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* is called when the process terminates. This allows the program to be (asynchronously)
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* notified about the process termination and also retrieve its exit status which is
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* unavailable from @wxExecute in the case of asynchronous execution.
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* <br /><br />
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* wxProcess also supports IO redirection of the child process. For this, you have to call
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* its @wxProcess#redirect method before passing it to @wxExecute. If the child process was launched successfully,
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* @wxProcess#inputStream, @wxProcess#outputStream and @wxProcess#errorStream can then be used to retrieve the
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* streams corresponding to the child process standard output, input and error output respectively.
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* </class>
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*/
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WXJS_INIT_CLASS(Process, "wxProcess", 1)
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/***
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* <constants>
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* <type>
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* <constant name="DEFAULT" />
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* <constant name="REDIRECT">Turn on redirection</constant>
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* </type>
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* <type name="wxSignal">
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* <constant name="SIGNONE" />
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* <constant name="SIGHUP" />
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* <constant name="SIGINT" />
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* <constant name="SIGQUIT" />
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* <constant name="SIGILL" />
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* <constant name="SIGTRAP" />
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* <constant name="SIGABRT" />
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* <constant name="SIGEMT" />
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* <constant name="SIGFPE" />
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* <constant name="SIGKILL" />
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* <constant name="SIGBUS" />
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* <constant name="SIGSEGV" />
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* <constant name="SIGSYS" />
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* <constant name="SIGPIPE" />
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* <constant name="SIGALRM" />
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* <constant name="SIGTERM" />
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* </type>
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* <type name="wxKillError">
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* <constant name="OK">no error</constant>
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* <constant name="BAD_SIGNAL">no such signal</constant>
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* <constant name="ACCESS_DENIED">permission denied</constant>
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* <constant name="NO_PROCESS">no such process</constant>
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* <constant name="ERROR">another, unspecified error</constant>
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* </type>
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* </constants>
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*/
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WXJS_BEGIN_CONSTANT_MAP(Process)
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WXJS_CONSTANT(wxPROCESS_, DEFAULT)
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WXJS_CONSTANT(wxPROCESS_, REDIRECT)
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WXJS_END_CONSTANT_MAP()
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void Process::InitClass(JSContext *cx, JSObject *obj, JSObject *proto)
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{
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JSConstDoubleSpec wxSignalType[] =
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{
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WXJS_CONSTANT(wx, SIGNONE)
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WXJS_CONSTANT(wx, SIGHUP)
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WXJS_CONSTANT(wx, SIGINT)
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WXJS_CONSTANT(wx, SIGQUIT)
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WXJS_CONSTANT(wx, SIGILL)
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WXJS_CONSTANT(wx, SIGTRAP)
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WXJS_CONSTANT(wx, SIGABRT)
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WXJS_CONSTANT(wx, SIGEMT)
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WXJS_CONSTANT(wx, SIGFPE)
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WXJS_CONSTANT(wx, SIGKILL)
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WXJS_CONSTANT(wx, SIGBUS)
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WXJS_CONSTANT(wx, SIGSEGV)
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WXJS_CONSTANT(wx, SIGSYS)
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WXJS_CONSTANT(wx, SIGPIPE)
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WXJS_CONSTANT(wx, SIGALRM)
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WXJS_CONSTANT(wx, SIGTERM)
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{ 0 }
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};
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JSObject *constObj = JS_DefineObject(cx, obj, "wxSignal",
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NULL, NULL,
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JSPROP_READONLY | JSPROP_PERMANENT);
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JS_DefineConstDoubles(cx, constObj, wxSignalType);
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JSConstDoubleSpec wxKillErrorType[] =
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{
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WXJS_CONSTANT(wxKILL_, OK)
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WXJS_CONSTANT(wxKILL_, BAD_SIGNAL)
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WXJS_CONSTANT(wxKILL_, ACCESS_DENIED)
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WXJS_CONSTANT(wxKILL_, NO_PROCESS)
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WXJS_CONSTANT(wxKILL_, ERROR)
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{ 0 }
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};
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constObj = JS_DefineObject(cx, obj, "wxKillError",
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NULL, NULL,
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JSPROP_READONLY | JSPROP_PERMANENT);
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JS_DefineConstDoubles(cx, constObj, wxKillErrorType);
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}
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/***
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* <properties>
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* <property name="errorStream" type="@wxInputStream" readonly="Y">
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* Returns an input stream which corresponds to the standard error output (stderr) of the child process.
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* </property>
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* <property name="inputStream" type="@wxInputStream" readonly="Y">
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* It returns an input stream corresponding to the standard output stream of the subprocess.
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* If it is null, you have not turned on the redirection
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* </property>
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* <property name="outputStream" type="@wxOutputStream" readonly="Y">
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* It returns an output stream corresponding to the input stream of the subprocess.
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* If it is null, you have not turned on the redirection.
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* </property>
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* <property name="errorAvailable" type="Boolean" readonly="Y">
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* Returns true if there is data to be read on the child process standard error stream.
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* </property>
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* <property name="inputAvailable" type="Boolean" readonly="Y">
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* Returns true if there is data to be read on the child process standard output stream.
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* </property>
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* <property name="inputOpened" type="Boolean" readonly="Y">
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* Returns true if the child process standard output stream is opened.
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* </property>
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* <property name="pid" type="Integer" readonly="Y">
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* Returns the process ID of the process launched by @wxProcess#open.
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* </property>
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* </properties>
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*/
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WXJS_BEGIN_PROPERTY_MAP(Process)
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WXJS_READONLY_PROPERTY(P_ERROR_STREAM, "errorStream")
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WXJS_READONLY_PROPERTY(P_INPUT_STREAM, "inputStream")
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WXJS_READONLY_PROPERTY(P_OUTPUT_STREAM, "outputStream")
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WXJS_READONLY_PROPERTY(P_ERROR_AVAILABLE, "errorAvailable")
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WXJS_READONLY_PROPERTY(P_INPUT_AVAILABLE, "inputAvailable")
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WXJS_READONLY_PROPERTY(P_INPUT_OPENED, "inputOpened")
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WXJS_READONLY_PROPERTY(P_PID, "pid")
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WXJS_END_PROPERTY_MAP()
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bool Process::GetProperty(Process *p, JSContext *cx, JSObject *obj, int id, jsval *vp)
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{
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switch(id)
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{
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case P_ERROR_STREAM:
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{
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wxInputStream *in = p->GetErrorStream();
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if ( in != NULL )
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{
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*vp = InputStream::CreateObject(cx, new Stream(in));
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}
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}
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break;
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case P_INPUT_STREAM:
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{
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wxInputStream *in = p->GetInputStream();
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if ( in != NULL )
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{
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*vp = InputStream::CreateObject(cx, new Stream(in));
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}
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}
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break;
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case P_OUTPUT_STREAM:
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{
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wxOutputStream *out = p->GetOutputStream();
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if ( out != NULL )
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{
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*vp = OutputStream::CreateObject(cx, new Stream(out));
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}
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}
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break;
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case P_ERROR_AVAILABLE:
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*vp = ToJS(cx, p->IsErrorAvailable());
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break;
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case P_INPUT_AVAILABLE:
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*vp = ToJS(cx, p->IsInputAvailable());
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break;
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case P_INPUT_OPENED:
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*vp = ToJS(cx, p->IsInputOpened());
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break;
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case P_PID:
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*vp = ToJS(cx, p->GetPid());
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break;
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}
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return true;
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}
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/***
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* <ctor>
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* <function>
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* <arg name="Flag" type="Integer" default="wxProcess.DEFAULT" />
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* </function>
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* <desc>
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* Constructs a new wxProcess object.
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* </desc>
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* </ctor>
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*/
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Process *Process::Construct(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, bool constructing)
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{
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int flags = wxPROCESS_DEFAULT;
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if ( argc == 1 )
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{
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if ( ! FromJS(cx, argv[0], flags) )
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return NULL;
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}
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return new Process(cx, obj, flags);
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}
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void Process::Destruct(JSContext *cx, Process *p)
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{
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}
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WXJS_BEGIN_METHOD_MAP(Process)
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WXJS_METHOD("closeOutput", closeOutput, 0)
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WXJS_METHOD("detach", detach, 0)
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WXJS_METHOD("redirect", redirect, 0)
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WXJS_END_METHOD_MAP()
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/***
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* <method name="closeOutput">
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* <function />
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* <desc>
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* Closes the output stream (the one connected to the stdin of the child process).
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* This function can be used to indicate to the child process that there is no more
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* data to be read - usually, a filter program will only terminate when the input stream is closed.
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* </desc>
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* </method>
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*/
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JSBool Process::closeOutput(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Process *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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p->CloseOutput();
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return JS_TRUE;
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}
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/***
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* <method name="detach">
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* <function />
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* <desc>
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* Normally, a wxProcess object is destroyed when it receives the notification about the process termination.
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* However, it might happen that the parent application ends before the external process is terminated
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* (e.g. a window from which this external process was launched is closed by the user) and in this case
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* it should detach.
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* </desc>
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* </method>
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*/
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JSBool Process::detach(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Process *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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p->Detach();
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return JS_TRUE;
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}
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/***
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* <method name="redirect">
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* <function />
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* <desc>
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* Turns on redirection. @wxExecute will try to open a couple of pipes to catch the subprocess stdio.
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* The caught input stream is returned by @wxProcess#outputStream as a non-seekable stream. The caught
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* output stream is returned by @wxProcess#inputStream as a non-seekable stream.
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* </desc>
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* </method>
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*/
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JSBool Process::redirect(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Process *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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p->Redirect();
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return JS_TRUE;
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}
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WXJS_BEGIN_STATIC_METHOD_MAP(Process)
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WXJS_METHOD("kill", kill, 1)
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WXJS_METHOD("exists", exists, 1)
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WXJS_END_METHOD_MAP()
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/***
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* <class_method name="kill">
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* <function returns="@wxKillError">
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* <arg name="pid" type="Integer">The process ID</arg>
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* <arg name="signal" type="Integer" default="wxSignal.SIGNONE">The signal to send to the process</arg>
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* <arg name="killChildren" type="Boolean" default="false">Kill child processes?</arg>
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* </function>
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* <desc>
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* Send the specified signal to the given process.
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* </desc>
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* </class_method>
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*/
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JSBool Process::kill(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Process *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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if ( argc > 3 )
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argc = 3;
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int signal = wxSIGNONE;
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bool killChildren = false;
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switch(argc)
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{
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case 3:
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if ( ! FromJS(cx, argv[2], killChildren) )
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break;
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// Fall through
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case 2:
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if ( ! FromJS(cx, argv[1], signal ) )
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break;
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// Fall through
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default:
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{
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long pid;
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if ( FromJS(cx, argv[0], pid) )
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{
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*rval = ToJS(cx, (int) wxProcess::Kill(pid, (wxSignal) signal, killChildren ? wxKILL_CHILDREN : wxKILL_NOCHILDREN));
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return JS_TRUE;
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}
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}
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}
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return JS_FALSE;
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}
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/***
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* <class_method name="exists">
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* <function returns="Boolean">
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* <arg name="Pid" type="Integer">Process ID</arg>
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* </function>
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* <desc>
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* Returns true if the given process exists in the system
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* </desc>
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* </class_method>
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*/
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JSBool Process::exists(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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Process *p = GetPrivate(cx, obj);
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if ( p == NULL )
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return JS_FALSE;
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int pid;
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if ( FromJS(cx, argv[0], pid) )
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{
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*rval = ToJS(cx, wxProcess::Exists(pid));
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return JS_TRUE;
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}
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return JS_FALSE;
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}
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