mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-05-20 03:30:27 +02:00
Code Activity

* gdbint.c (gdb_read): Now possible to run during GC.

Browse source 
(unmark_port, remark_port): New functions.
This commit is contained in:
Mikael Djurfeldt 1996-09-11 22:04:45 +00:00
parent 85ab994756
commit 380b6b4c32
1 changed files with 56 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

60
libguile/gdbint.c
View file

@ -102,7 +102,8 @@
{ \
gdb_output = str; \
gdb_output_length = strlen (str); \
}
} \
/* {Gdb interface}
*/
@ -120,9 +121,50 @@ int gdb_output_length;
int scm_print_carefully_p;
static SCM gdb_input_port;
static int port_mark_p, stream_mark_p, string_mark_p;
static SCM tok_buf;
static int tok_buf_mark_p;
static SCM gdb_output_port;
static int old_ints, old_gc;
#ifdef __STDC__
static void
unmark_port (SCM port)
#else
static void
unmark_port (port)
SCM port;
#endif
{
SCM stream, string;
port_mark_p = SCM_GC8MARKP (port);
SCM_CLRGC8MARK (port);
stream = SCM_STREAM (port);
stream_mark_p = SCM_GCMARKP (stream);
SCM_CLRGCMARK (stream);
string = SCM_CDR (stream);
string_mark_p = SCM_GC8MARKP (string);
SCM_CLRGC8MARK (string);
}
#ifdef __STDC__
static void
remark_port (SCM port)
#else
static void
remark_port (port)
SCM port;
#endif
{
SCM stream = SCM_STREAM (port);
SCM string = SCM_CDR (stream);
if (string_mark_p) SCM_SETGC8MARK (string);
if (stream_mark_p) SCM_SETGCMARK (stream);
if (port_mark_p) SCM_SETGC8MARK (port);
}
#ifdef __STDC__
int
gdb_maybe_valid_type_p (SCM value)
@ -177,25 +219,33 @@ gdb_read (str)
}
}
SCM_BEGIN_FOREIGN_BLOCK;
unmark_port (gdb_input_port);
/* Replace string in input port and reset stream */
ans = SCM_CDR (SCM_STREAM (gdb_input_port));
SCM_SETCHARS (ans, str);
SCM_SETLENGTH (ans, strlen (str), scm_tc7_string);
SCM_SETCAR (SCM_STREAM (gdb_input_port), SCM_INUM0);
/* Read one object */
ans = scm_read (gdb_input_port, SCM_UNDEFINED, SCM_UNDEFINED);
tok_buf_mark_p = SCM_GC8MARKP (tok_buf);
SCM_CLRGC8MARK (tok_buf);
ans = scm_lreadr (&tok_buf, gdb_input_port, 0, SCM_BOOL_F);
if (SCM_GC_P)
{
if (!SCM_IMP (ans))
if (SCM_NIMP (ans))
{
SEND_STRING ("Non-immediate created during gc. Memory may be trashed.");
status = -1;
goto exit;
}
}
gdb_result = ans;
/* Protect answer from future GC */
gdb_result = scm_permanent_object (ans);;
if (SCM_NIMP (ans))
scm_permanent_object (ans);
exit:
if (tok_buf_mark_p)
SCM_SETGC8MARK (tok_buf);
remark_port (gdb_input_port);
SCM_END_FOREIGN_BLOCK;
return status;
}
@ -295,4 +345,6 @@ scm_init_gdbint ()
SCM_OPN | SCM_RDNG,
s);
gdb_input_port = scm_permanent_object (port);
tok_buf = scm_permanent_object (scm_makstr (30L, 0));
}