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authorSimo Sorce <idra@samba.org>2011-05-09 05:37:29 -0400
committerAndreas Schneider <asn@samba.org>2011-08-10 18:14:03 +0200
commitde08cd99b2832aca319d81cd27c0c71838567f8d (patch)
tree633278ab15603aba3c5a5acd0dfc3cb017626054 /source3/printing/spoolssd.c
parent567ca037866e188142ddc4533324e80080e93b81 (diff)
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s3-spoolssd: expand children pool when necessary
Signed-off-by: Andreas Schneider <asn@samba.org>
Diffstat (limited to 'source3/printing/spoolssd.c')
-rw-r--r--source3/printing/spoolssd.c41
1 files changed, 34 insertions, 7 deletions
diff --git a/source3/printing/spoolssd.c b/source3/printing/spoolssd.c
index ab0ab23687..99bdaf7883 100644
--- a/source3/printing/spoolssd.c
+++ b/source3/printing/spoolssd.c
@@ -40,17 +40,31 @@
#define SPOOLSS_SPAWN_RATE 5
#define SPOOLSS_MIN_LIFE 60 /* 1 minute minimum life time */
+#define SPOOLSS_ALL_FINE 0x00
+#define SPOOLSS_NEW_MAX 0x01
+#define SPOLLSS_ENOSPC 0x02
+
static int spoolss_min_children;
static int spoolss_max_children;
static int spoolss_spawn_rate;
+static int spoolss_prefork_status;
static void spoolss_prefork_config(void)
{
+ static int spoolss_prefork_config_init = false;
const char *prefork_str;
int min, max, rate;
bool use_defaults = false;
int ret;
+ if (!spoolss_prefork_config_init) {
+ spoolss_prefork_status = SPOOLSS_ALL_FINE;
+ spoolss_min_children = 0;
+ spoolss_max_children = 0;
+ spoolss_spawn_rate = 0;
+ spoolss_prefork_config_init = true;
+ }
+
prefork_str = lp_parm_const_string(GLOBAL_SECTION_SNUM,
"spoolssd", "prefork", "none");
if (strcmp(prefork_str, "none") == 0) {
@@ -64,14 +78,18 @@ static void spoolss_prefork_config(void)
}
if (use_defaults) {
- spoolss_min_children = SPOOLSS_MIN_CHILDREN;
- spoolss_max_children = SPOOLSS_MAX_CHILDREN;
- spoolss_spawn_rate = SPOOLSS_SPAWN_RATE;
- } else {
- spoolss_min_children = min;
- spoolss_max_children = max;
- spoolss_spawn_rate = rate;
+ min = SPOOLSS_MIN_CHILDREN;
+ max = SPOOLSS_MAX_CHILDREN;
+ rate = SPOOLSS_SPAWN_RATE;
+ }
+
+ if (max > spoolss_max_children && spoolss_max_children != 0) {
+ spoolss_prefork_status |= SPOOLSS_NEW_MAX;
}
+
+ spoolss_min_children = min;
+ spoolss_max_children = max;
+ spoolss_spawn_rate = rate;
}
void start_spoolssd(struct tevent_context *ev_ctx,
@@ -584,6 +602,15 @@ static void spoolssd_check_children(struct tevent_context *ev_ctx,
pfp = talloc_get_type_abort(pvt, struct prefork_pool);
+ if ((spoolss_prefork_status & SPOOLSS_NEW_MAX) &&
+ !(spoolss_prefork_status & SPOLLSS_ENOSPC)) {
+ ret = prefork_expand_pool(pfp, spoolss_max_children);
+ if (ret == ENOSPC) {
+ spoolss_prefork_status |= SPOLLSS_ENOSPC;
+ }
+ spoolss_prefork_status &= ~SPOOLSS_NEW_MAX;
+ }
+
active = prefork_count_active_children(pfp, &total);
if (total - active < spoolss_spawn_rate) {