PerlEmbed - C＃ - 单 - 的Linux(PerlEmbed - C# - Mon

有没有人尝试了使用单上perlembed的Linux？

这里是链接： perlembed

这是我在的DllImport签名第一次尝试：

private const string PERL_LIB = "/usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so";

[DllImport(PERL_LIB, EntryPoint = "perl_alloc", SetLastError = true)]
public static extern IntPtr Alloc();

[DllImport(PERL_LIB, EntryPoint = "perl_construct", SetLastError = true)]
public static extern void Construct(IntPtr hPerl);

[DllImport(PERL_LIB, EntryPoint = "perl_destruct", SetLastError = true)]
public static extern void Destruct(IntPtr hPerl);

[DllImport(PERL_LIB, EntryPoint = "perl_free", SetLastError = true)]
public static extern void Free(IntPtr hPerl);

[DllImport(PERL_LIB, EntryPoint = "perl_parse", SetLastError = true)]
public static extern void Parse(IntPtr hPerl, IntPtr @null, int argc, StringBuilder argv, StringBuilder env);

[DllImport(PERL_LIB, EntryPoint = "perl_run", SetLastError = true)]
public static extern void Run(IntPtr hPerl);

[DllImport(PERL_LIB, EntryPoint = "eval_pv", SetLastError = true)]
public static extern void Eval(string expr, bool flag);

该核心目录可以为每个Linux发行版更改。

下面的代码运行，但崩溃的Parse()方法：

try
{
    Console.WriteLine("Alloc");
    IntPtr perl = Alloc();

    Console.WriteLine("Construct");
    Construct(perl);

    Console.WriteLine("Parse");
    Parse(perl, IntPtr.Zero, 3, new StringBuilder("-e 0"), new StringBuilder());

    Console.WriteLine("Run");
    Run(perl);

    Console.WriteLine("Eval");
    Eval("$a = 3.14; $a **= 2", true);

    Console.WriteLine("Destruct");
    Destruct(perl);

    Console.WriteLine("Free");
    Free(perl);
} 
catch (Exception exc)
{
    Console.WriteLine(exc.ToString());
}

我崩溃写道：

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Stacktrace:

in (wrapper managed-to-native) Woot:Parse (intptr,intptr,int,System.Text.StringBuilder,System.Text.StringBuilder) <0x4>
in (wrapper managed-to-native) Woot:Parse (intptr,intptr,int,System.Text.StringBuilder,System.Text.StringBuilder) <0xffff9f85>
in Woot:Main () <0x8d>
in (wrapper runtime-invoke) System.Object:runtime_invoke_void (object,intptr,intptr,intptr) <0x7c79b09>

原生堆栈跟踪：

 mono(mono_handle_native_sigsegv+0xbb) [0x81368fb]
 mono [0x8105670]
 [0x4c45a440]
 /usr/lib/perl5/5.8.8/i386-linux-thread-multi/CORE/libperl.so(perl_parse+0xa3)    [0x4c6e6e93]
 [0x43ad78]
 [0x434cae]
 [0x434abe]
 mono(mono_runtime_exec_main+0x62) [0x80ae5a2]
 mono(mono_runtime_run_main+0x152) [0x80af6e2]
 mono(mono_main+0xef9) [0x805dae9]
 mono [0x805c702]
 /lib/libc.so.6(__libc_start_main+0xdc) [0x4c48d724]
 mono [0x805c651]

有一些PERL_SYS_INIT3 ，并PERL_SYS_TERM调用perlembed提到，但我一直无法通过调用这些方法DllImport 。我总是EntryPointNotFoundException在这些情况下。我敢肯定，他们在不同的文件，我需要进口。

可有人告诉我正确的方法来调用DllImports到perlembed？

Answer 1:

得到它的工作！

作出perl程序，showtime.pl：

#/usr/bin/perl

sub showtime {
    print "WOOT!\n";
}

取得了C程序，perlembed.c：

#include <EXTERN.h>
#include <perl.h>

static PerlInterpreter *my_perl;

void Initialize(char* processName, char* perlFile)
{
    int argc = 2;
    char *argv[] = { processName, perlFile },
        *env[]  = { "" };

    PERL_SYS_INIT3(&argc, &argv, &env);
    my_perl = perl_alloc();
    perl_construct(my_perl);
    perl_parse(my_perl, NULL, argc, argv, NULL);
    PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
}

void Call(char* subName)
{
    char *args[] = { NULL };
    call_argv(subName, G_DISCARD | G_NOARGS, args);
}

void Dispose()
{
    if (my_perl != NULL)
    {
      perl_destruct(my_perl);
      perl_free(my_perl);
      PERL_SYS_TERM();
      my_perl = NULL;
    }
}

通过编译它：

"gcc -shared -Wl,-soname,perlembed.so -o perlembed.so perlembed.c `perl -MExtUtils::Embed -e ccopts -e ldopts`"

使这个C＃程序，perlembed.cs：

using System;
using System.Runtime.InteropServices;

public class Woot
{
  [DllImport("perlembed.so", SetLastError = true)]
  public static extern void Initialize(string processName, string perlFile);

  [DllImport("perlembed.so", SetLastError = true)]
  public static extern void Call(string subName);

  [DllImport("perlembed.so", SetLastError = true)]
  public static extern void Dispose();

    static void Main()
    {
        Console.WriteLine("Starting up C#...");

        try
        {
            Initialize("perlembed.exe", "showtime.pl");

            Call("showtime");
        }
        catch(Exception exc)
        {
            Console.WriteLine(exc.ToString());
        }
        finally
        {
            Dispose();
        }

        Console.WriteLine("DONE!...");
    }
}

用的GMC编译它，并得到了输出：