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POPerlEmbed - C# - Mono - Linux
 

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    <p>Has anyone attempted using perlembed in Mono on Linux?</p> <p>Here is the link: <a href="http://perldoc.perl.org/perlembed.html" rel="noreferrer">perlembed</a></p> <p>Here is my first attempt at the DllImport signatures:</p> <pre><code>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); </code></pre> <p>The CORE directory can change per Linux distro. </p> <p>The following code runs, but crashes on the <code>Parse()</code> method:</p> <pre><code>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()); } </code></pre> <p>My crash reads:</p> <pre><code>================================================================= 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) &lt;0x4&gt; in (wrapper managed-to-native) Woot:Parse (intptr,intptr,int,System.Text.StringBuilder,System.Text.StringBuilder) &lt;0xffff9f85&gt; in Woot:Main () &lt;0x8d&gt; in (wrapper runtime-invoke) System.Object:runtime_invoke_void (object,intptr,intptr,intptr) &lt;0x7c79b09&gt; </code></pre> <p>Native stacktrace:</p> <pre><code> 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] </code></pre> <p>There are some <code>PERL_SYS_INIT3</code>, and <code>PERL_SYS_TERM</code> calls that <a href="http://perldoc.perl.org/perlembed.html" rel="noreferrer">perlembed</a> mentions, but I have not been able to call those methods through <code>DllImport</code>. I always get <code>EntryPointNotFoundException</code> in those cases. I'm sure they are in a different file I need to import.</p> <p>Can someone direct me in the correct way to call <code>DllImports</code> to perlembed?</p>
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