From: Linas Vepstas <linasvepstas@gmail.com>
To: Maurizio Boriani <baux@member.fsf.org>
Cc: Guile User Mailing List <guile-user@gnu.org>
Subject: [PATCH 5/12] Guile-DBI: Use remember_upto_here
Date: Fri, 19 Sep 2008 09:13:37 -0500 [thread overview]
Message-ID: <20080919141337.GF13684@linas.org> (raw)
In-Reply-To: <3ae3aa420809190645o2fe2b746id80f53c5cb123e5b@mail.gmail.com>
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Sprinkle code with some scm_remember_upto_here_1(), as it looks like
there's a potential garbage-collection race.
Also, simplify a particularly complicated test.
Signed-off-by: Linas Vepstas <linasvepstas@gmail.com>
---
src/guile-dbi.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
Index: guile-dbi-2.0.0/src/guile-dbi.c
===================================================================
--- guile-dbi-2.0.0.orig/src/guile-dbi.c 2008-09-16 20:53:23.000000000 -0500
+++ guile-dbi-2.0.0/src/guile-dbi.c 2008-09-16 21:40:24.000000000 -0500
@@ -159,7 +159,7 @@ SCM_DEFINE (close_g_db_handle, "dbi-clos
SCM_ASSERT (DBI_SMOB_P(db_handle), db_handle, SCM_ARG1, "close_g_db_handle");
g_db_handle = (struct g_db_handle*)SCM_SMOB_DATA(db_handle);
- if (scm_equal_p (g_db_handle->closed, SCM_BOOL_T) == SCM_BOOL_T)
+ if (g_db_handle->closed == SCM_BOOL_T)
{
return SCM_UNSPECIFIED;
}
@@ -167,6 +167,7 @@ SCM_DEFINE (close_g_db_handle, "dbi-clos
__gdbi_dbd_wrap(g_db_handle,(char*) __FUNCTION__,(void**) &dbd_close);
if (scm_equal_p (SCM_CAR(g_db_handle->status),scm_from_int(0)) == SCM_BOOL_F)
{
+ scm_remember_upto_here_1(db_handle);
return SCM_UNSPECIFIED;
}
(*dbd_close)(g_db_handle);
@@ -175,6 +176,7 @@ SCM_DEFINE (close_g_db_handle, "dbi-clos
dlclose(g_db_handle->handle);
g_db_handle->handle = NULL;
}
+ scm_remember_upto_here_1(db_handle);
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
@@ -217,13 +219,13 @@ SCM_DEFINE (query_g_db_handle, "dbi-quer
query_str = scm_to_locale_string(query);
__gdbi_dbd_wrap(g_db_handle,(char*) __FUNCTION__,(void**) &dbi_query);
- if (scm_equal_p (SCM_CAR(g_db_handle->status),scm_from_int(0)) == SCM_BOOL_F)
+ if (scm_equal_p (SCM_CAR(g_db_handle->status),scm_from_int(0)) == SCM_BOOL_T)
{
- return(SCM_UNSPECIFIED);
+ (*dbi_query)(g_db_handle,query_str);
}
-
- (*dbi_query)(g_db_handle,query_str);
+ free(query_str);
+ scm_remember_upto_here_1(db_handle);
return (SCM_UNSPECIFIED);
}
#undef FUNC_NAME
@@ -240,17 +242,18 @@ SCM_DEFINE (getrow_g_db_handle, "dbi-get
SCM (*dbi_getrow)(gdbi_db_handle_t*);
SCM_ASSERT (DBI_SMOB_P(db_handle), db_handle, SCM_ARG1, "getrow_g_db_handle");
-
g_db_handle = (struct g_db_handle*)SCM_SMOB_DATA(db_handle);
__gdbi_dbd_wrap(g_db_handle,(char*) __FUNCTION__,(void**) &dbi_getrow);
if (scm_equal_p (SCM_CAR(g_db_handle->status),scm_from_int(0)) == SCM_BOOL_F)
{
+ scm_remember_upto_here_1(db_handle);
return(retrow);
}
retrow = (*dbi_getrow)(g_db_handle);
+ scm_remember_upto_here_1(db_handle);
return(retrow);
}
#undef FUNC_NAME
@@ -270,6 +273,7 @@ SCM_DEFINE (getstat_g_db_handle, "dbi-ge
if (g_db_handle != NULL)
{
+ scm_remember_upto_here_1(db_handle);
return (g_db_handle->status);
}
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next prev parent reply other threads:[~2008-09-19 14:13 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 13:45 PATCH [0/12]: Guile-DBI and Guile-DBD-Postgres Linas Vepstas
2008-09-19 14:00 ` [PATCH 1/12] Guile-DBI: Avoid multiple init Linas Vepstas
2008-09-19 14:05 ` [PATCH 2/12] Guile-DBI: minor cleanup Linas Vepstas
2008-09-19 14:06 ` [PATCH 3/12] Guile-DBI: Fix memory leak Linas Vepstas
2008-09-19 14:09 ` [PATCH 4/12] Guile-DBII: replace deprecated gh_ functions Linas Vepstas
2008-09-19 14:11 ` [PATCH 6/12] Guile-DBI: Fix crash, avoid recursive free Linas Vepstas
2008-09-19 14:13 ` Linas Vepstas [this message]
2008-09-19 14:15 ` [PATCH 7/12] Guile-DBI: Don't cast away const Linas Vepstas
2008-09-19 14:17 ` [PATCH 8/12] Guile-DBD-postgres: Fix handling of float point columns Linas Vepstas
2008-09-19 14:19 ` [PATCH 9/12] Guile-DBD-postgres: Avoid discouraged functions Linas Vepstas
2008-09-19 14:20 ` [PATCH 10/12] Guile-DBD-postgres: Fix off-by-one when fetching rows Linas Vepstas
2008-09-19 14:22 ` [PATCH 11/12] Guile-DBD-postgres: Avoid deprecated functions Linas Vepstas
2008-09-19 14:23 ` [PATCH 12/12] Guile-DBD-postgres: Crash in GC Linas Vepstas
2008-09-19 23:00 ` PATCH [0/12]: Guile-DBI and Guile-DBD-Postgres Neil Jerram
2008-09-19 23:22 ` Greg Troxel
2008-09-19 23:24 ` Greg Troxel
2008-09-20 0:19 ` Linas Vepstas
2008-09-20 13:25 ` Greg Troxel
2008-09-20 15:43 ` Linas Vepstas
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