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Re: what do PERL_SYS_INIT3() and PERL_SYS_TERM() do?

by patcat88 (Deacon)
on Dec 31, 2011 at 05:30 UTC ( #945722=note: print w/replies, xml ) Need Help??

in reply to what do PERL_SYS_INIT3() and PERL_SYS_TERM() do?

#define PERL_SYS_INIT3(argc, argv, env) Perl_sys_init3(argc, argv, +env)
void Perl_sys_init3 (int *argc, char ***argv, char ***env) { extern int Perl___notused; (void) ((argc) || (_assert ("argc", "perl.c", 145), 0)); (void) ((argv) || (_assert ("argv", "perl.c", 145), 0)); (void) ((env) || (_assert ("env", "perl.c", 145), 0)); ((void) argc); ((void) argv); ((void) env); Perl_win32_init (argc, argv); InitializeCriticalSection (&(*Perl_Gperlio_mutex_ptr (0))); }
void Perl_win32_init (int *argcp, char ***argvp) { HMODULE module; _control87 (0x0008001f, 0x0008001f); #line 4840 "win32.c" ; InitCommonControls (); module = GetModuleHandleA ("ntdll.dll"); if (module) { *(FARPROC *) & pfnZwQuerySystemInformation = GetProcAddress (mod +ule, "ZwQuerySystemInformation"); } module = GetModuleHandleA ("kernel32.dll"); if (module) { *(FARPROC *) & pfnCreateToolhelp32Snapshot = GetProcAddress (mod +ule, "CreateToolhelp32Snapshot"); *(FARPROC *) & pfnProcess32First = GetProcAddress (module, "Proc +ess32First"); *(FARPROC *) & pfnProcess32Next = GetProcAddress (module, "Proce +ss32Next"); } g_osver.dwOSVersionInfoSize = sizeof (g_osver); GetVersionExA (&g_osver); ansify_path (); }
#define PERL_SYS_TERM() Perl_sys_term()
void Perl_sys_term () { extern int Perl___notused; if (!(*Perl_Gveto_cleanup_ptr (0))) { Perl_win32_term (); } }
void Perl_win32_term (void) { PerlInterpreter *my_perl = ((PerlInterpreter *) Perl_get_context ()) +; DeleteCriticalSection (&(*Perl_Ghints_mutex_ptr (0))); DeleteCriticalSection (&(*Perl_Gop_mutex_ptr (0))); do { PerlIO_teardown (); DeleteCriticalSection (&(*Perl_Gperlio_mutex_ptr (0))); } while (0); ; }
I agree, terrible terrible description in perlapi. Perl 5.12.2 on windows above. Use the -P flag, and then a code formater. On some makefiles (XS/makemaker ones, not perl interpreter makefile) you can just type "nmake somecfile.i" and it will make the post preprocessed file, you still need to run it through a code formatter for it to be remotely readable. The Perl interpreter is the first interpreted programing language written completely in preprocessor macros jk jk

It seems to me like you have to call then once per process. They set up process global, not ithread global (or is that local?), things perl uses.

Also watch out for insane Perls taken your c standard lib hostage problems, Perl's headers redefine all of C standard library to its own emulations, see fakesdio.h in perl.git and XSUB.h#l563 in perl.git and win32/win32iop-o.h#l292 in perl.git. It will cause endless crashes and headaches when trying to interface Perl with anything else that is written in C. Make sure you have tons of undefs to return you back to your normal c standard library.

Why Perl takes over your cstdlib? Who knows, perlclib has the Perl specific names for Perl's clib.

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