New interface for creating and managing processes. New feature for bug 62167. a=dougt sr=brendan

xpcom/threads/nsIProcess.idl

@@ -0,0 +1,25 @@
+#include "nsIFile.idl"
+#include "nsISupports.idl"
+
+[scriptable, uuid(3ed86dbe-d084-11d4-ba7a-00c04fa0d26b)]
+
+interface nsIProcess : nsISupports
+{
+	void init(in nsIFile executable);
+	void initWithPid(in unsigned long pid);
+	
+	void kill();
+	void run(in boolean blocking, [array, size_is(count)] in string args, in unsigned long count, out unsigned long pid);
+
+	readonly attribute nsIFile location;
+	readonly attribute unsigned long pid;
+	readonly attribute string processName;
+	readonly attribute unsigned long processSignature;
+	readonly attribute long exitValue;
+};
+
+%{C++
+
+#define NS_PROCESS_CONTRACTID "@mozilla.org/process/util;1"
+#define NS_PROCESS_CLASSNAME "Process Specification"
+%}

xpcom/threads/nsProcess.h

@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Mozilla Communicator client code, 
+ * released March 31, 1998. 
+ *
+ * The Initial Developer of the Original Code is Netscape Communications 
+ * Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998-1999 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ *     Don Bragg <dbragg@netscape.com>
+ */
+
+#ifndef _nsPROCESSWIN_H_
+#define _nsPROCESSWIN_H_
+
+#include "nsIProcess.h"
+#include "nsXPIDLString.h"
+#include "prproces.h"
+
+#define NS_PROCESS_CID \
+{0x7b4eeb20, 0xd781, 0x11d4, \
+   {0x8A, 0x83, 0x00, 0x10, 0xa4, 0xe0, 0xc9, 0xca}}
+
+class nsProcess : public nsIProcess
+{
+public:
+
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIPROCESS
+
+  nsProcess();
+  virtual ~nsProcess();
+
+private:
+  nsCOMPtr<nsIFile> mExecutable;
+  PRInt32 mExitValue;
+  nsXPIDLCString mTargetPath;
+  PRProcess *mProcess;
+
+};
+
+#endif

xpcom/threads/nsProcessCommon.cpp

@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is Mozilla Communicator client code, 
+ * released March 31, 1998. 
+ *
+ * The Initial Developer of the Original Code is Netscape Communications 
+ * Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998-1999 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Contributor(s): 
+ *     Don Bragg <dbragg@netscape.com>
+ */
+
+/*****************************************************************************
+ * 
+ * nsProcess is used to execute new processes and specify if you want to
+ * wait (blocking) or continue (non-blocking).
+ *
+ *****************************************************************************
+ */
+
+#include "nsCOMPtr.h"
+#include "nsMemory.h"
+#include "nsProcess.h"
+#include "prtypes.h"
+#include "prio.h"
+
+#include <stdlib.h>
+
+//-------------------------------------------------------------------//
+// nsIProcess implementation
+//-------------------------------------------------------------------//
+NS_IMPL_ISUPPORTS1(nsProcess, nsIProcess)
+
+//Constructor
+nsProcess::nsProcess():mExitValue(-1),
+                       mProcess(nsnull)
+{
+    NS_INIT_ISUPPORTS();
+}
+
+nsProcess::~nsProcess()
+{
+}
+
+NS_IMETHODIMP
+nsProcess::Init(nsIFile* executable)
+{
+    PRBool isFile;
+
+    //First make sure the file exists
+    nsresult rv = executable->IsFile(&isFile);
+    if (NS_FAILED(rv)) return rv;
+    if (!isFile)
+        return NS_ERROR_FAILURE;
+
+    //Store the nsIFile in mExecutable
+    mExecutable = executable;
+    //Get the path because it is needed by the NSPR process creation
+#ifdef XP_WIN 
+    rv = mExecutable->GetTarget(getter_Copies(mTargetPath));
+    if (NS_FAILED(rv) || !mTargetPath )
+#endif
+        rv = mExecutable->GetPath(getter_Copies(mTargetPath));
+
+    return rv;
+}
+
+
+NS_IMETHODIMP  
+nsProcess::Run(PRBool blocking, const char **args, PRUint32 count, PRUint32 *pid)
+{
+    nsresult rv = NS_OK;
+
+    // make sure that when we allocate we have 1 greater than the
+    // count since we need to null terminate the list for the argv to
+    // pass into PR_CreateProcess
+    char **my_argv = NULL;
+    my_argv = (char **)malloc(sizeof(char *) * (count + 2) );
+    if (!my_argv) {
+        return NS_ERROR_OUT_OF_MEMORY;
+    }
+
+    // copy the args
+    PRUint32 i;
+    for (i=0; i < count; i++) {
+        my_argv[i+1] = NS_CONST_CAST(char*, args[i]);
+    }
+    // we need to set argv[0] to the program name.
+    my_argv[0] = NS_CONST_CAST(char*, mTargetPath.get());
+    // null terminate the array
+    my_argv[count+1] = NULL;
+
+    if (blocking)
+    {
+        mProcess = PR_CreateProcess(mTargetPath, my_argv, NULL, NULL);
+        if (mProcess)
+            rv = PR_WaitProcess(mProcess, &mExitValue);
+    }
+    else
+        rv = PR_CreateProcessDetached(mTargetPath, my_argv, NULL, NULL);
+
+    // free up our argv
+    nsMemory::Free(my_argv);
+
+    if (rv != PR_SUCCESS)
+        return NS_ERROR_FILE_EXECUTION_FAILED;
+    return NS_OK;
+}
+
+NS_IMETHODIMP nsProcess::InitWithPid(PRUint32 pid)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsProcess::GetLocation(nsIFile** aLocation)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsProcess::GetPid(PRUint32 *aPid)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsProcess::GetProcessName(char** aProcessName)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsProcess::GetProcessSignature(PRUint32 *aProcessSignature)
+{
+    return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsProcess::Kill()
+{
+    nsresult rv = NS_OK;
+    if (mProcess)
+        rv = PR_KillProcess(mProcess);
+    
+    return rv;
+}
+
+NS_IMETHODIMP
+nsProcess::GetExitValue(PRInt32 *aExitValue)
+{
+    *aExitValue = mExitValue;
+    
+    return NS_OK;
+}
+