* segfault in 1.7.91
@ 2006-02-17 11:18 Stanislav Ievlev
2006-02-18 16:51 ` Ken Raeburn
0 siblings, 1 reply; 3+ messages in thread
From: Stanislav Ievlev @ 2006-02-17 11:18 UTC (permalink / raw)
Greetings!
It is unable to call callback from thread in guile extension.
module:
--
#include <libguile.h>
#include <pthread.h>
pthread_t dbus_tid;
void *start_test(void* user_data)
{
scm_call_0((void*)(user_data));
}
SCM scm_test_thread(SCM arg)
{
pthread_create(&dbus_tid,NULL,start_test,arg);
}
void scm_init_test(void)
{
scm_c_define_gsubr("test-thread", 1, 0, 0,(SCM(*)())scm_test_thread);
}
--
testcase:
--
(dynamic-call "scm_init_test" (dynamic-link "libguile-thread.so"))
(define cb (lambda() (write "zzz!\n")))
(test-thread cb)
(pause)
--
how to reproduce:
$gcc -fpic -lpthread dbus.c -shared -o lguile-thread.so
---
guile
guile> (dynamic-call "scm_init_test" (dynamic-link "libguile-thread.so"))
guile> (define cb (lambda() (write "zzz!\n")))
guile> (test-thread cb)
Segmentation fault
--
With best regards
Stanislav Ievlev.
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: segfault in 1.7.91
2006-02-17 11:18 segfault in 1.7.91 Stanislav Ievlev
@ 2006-02-18 16:51 ` Ken Raeburn
2006-02-20 9:00 ` Stanislav Ievlev
0 siblings, 1 reply; 3+ messages in thread
From: Ken Raeburn @ 2006-02-18 16:51 UTC (permalink / raw)
Cc: guile-devel
On Feb 17, 2006, at 06:18, Stanislav Ievlev wrote:
> Greetings!
>
> It is unable to call callback from thread in guile extension.
Does it work if you use scm_with_guile in that thread, as described
in the documentation?
(from doc/ref/api-init.texi)
Each thread that wants to use functions from the Guile API needs to
put itself into guile mode with either @code{scm_with_guile} or
@code{scm_init_guile}. The global state of Guile is initialized
automatically when the first thread enters guile mode.
Ken
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2006-02-17 11:18 segfault in 1.7.91 Stanislav Ievlev
2006-02-18 16:51 ` Ken Raeburn
2006-02-20 9:00 ` Stanislav Ievlev
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