why gh_enter()?

[bajcik]

hi,

Why libguile needs this function? I use few script languages, each in
another plugin. This function made me to do use this solution:

Plugin with guile sets special variable to GUILE_main(). After plugins
initialisation main will call GUILE_main(), and - later - will be called
again to do it's job.

over gdb:

#0  main (argc=2, argv=0xbffff8b4) at main.c:146
#1  0x004b82b2 in GUILE_main_inner () from 
/home/bajcik/.duskc/plugins/lang-guile.so
#2  0x004f5327 in gh_call3 () from /usr/lib/libguile.so.10
#3  0x004f8cfb in scm_boot_guile () from /usr/lib/libguile.so.10
#4  0x0051ddb5 in scm_internal_lazy_catch () from /usr/lib/libguile.so.10
#5  0x004f8ca9 in scm_boot_guile () from /usr/lib/libguile.so.10
#6  0x004f89a0 in scm_boot_guile () from /usr/lib/libguile.so.10
#7  0x004f535f in gh_enter () from /usr/lib/libguile.so.10
#8  0x004b82d7 in GUILE_main () from /home/bajcik/.duskc/plugins/lang-guile.so
#9  0x0806f0b6 in main (argc=2, argv=0xbffff8b4) at main.c:149
#10 0x00398a06 in __libc_start_main () from /lib/libc.so.6

I can't return from main() via "return" or exit() (This time plugin with
guile is dlclose()d ); I use _exit() to avoid seg-fault

Is gh_enter() nesesary?

bajcik
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