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lighttpd1.4
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[core] isolate stat_cache subsystem

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stat_cache.c no longer directly uses struct server *srv
personal/stbuehler/ci-build
Glenn Strauss 3 years ago
parent 8588772caa
commit 66bdd96d36
4 changed files with 26 additions and 22 deletions
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2
src/configfile.c
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@ -693,7 +693,7 @@ static int config_insert_srvconf(server *srv) {
case 27:/* server.reject-expect-100-with-417 *//*(ignored)*/
break;
case 28:/* server.stat-cache-engine */
if (0 != stat_cache_choose_engine(srv, cpv->v.b))
if (0 != stat_cache_choose_engine(cpv->v.b, srv->errh))
rc = HANDLER_ERROR;
break;
case 29:/* mimetype.xattr-name */

2
src/server.c
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@ -1329,7 +1329,7 @@ static int server_main_setup (server * const srv, int argc, char **argv) {
}
/* might fail if user is using fam (not gamin) and famd isn't running */
if (!stat_cache_init(srv)) {
if (!stat_cache_init(srv->ev, srv->errh)) {
log_error(srv->errh, __FILE__, __LINE__,
"stat-cache could not be setup, dieing.");
return -1;

38
src/stat_cache.c
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@ -1,7 +1,6 @@
#include "first.h"
#include "stat_cache.h"
#include "base.h"
#include "log.h"
#include "fdevent.h"
#include "etag.h"
@ -49,7 +48,6 @@ typedef struct stat_cache {
int stat_cache_engine;
splay_tree *files; /* nodes of tree are (stat_cache_entry *) */
struct stat_cache_fam *scf;
log_error_st *errh;
} stat_cache;
static stat_cache sc;
@ -157,6 +155,8 @@ typedef struct fam_dir_entry {
typedef struct stat_cache_fam {
splay_tree *dirs; /* the nodes of the tree are fam_dir_entry */
FAMConnection fam;
log_error_st *errh;
fdevents *ev;
fdnode *fdn;
int fd;
} stat_cache_fam;
@ -336,22 +336,21 @@ static void stat_cache_handle_fdevent_in(stat_cache_fam *scf)
static handler_t stat_cache_handle_fdevent(void *ctx, int revent)
{
stat_cache_fam * const scf = sc.scf;
stat_cache_fam * const scf = ctx; /* sc.scf */
if (revent & FDEVENT_IN) {
stat_cache_handle_fdevent_in(scf);
}
if (revent & (FDEVENT_HUP|FDEVENT_RDHUP)) {
server *srv = ctx;
/* fam closed the connection */
log_error(srv->errh, __FILE__, __LINE__,
log_error(scf->errh, __FILE__, __LINE__,
"FAM connection closed; disabling stat_cache.");
/* (although effectively STAT_CACHE_ENGINE_NONE,
* do not change here so that periodic jobs clean up memory)*/
/*sc.stat_cache_engine = STAT_CACHE_ENGINE_NONE; */
fdevent_fdnode_event_del(srv->ev, scf->fdn);
fdevent_unregister(srv->ev, scf->fd);
fdevent_fdnode_event_del(scf->ev, scf->fdn);
fdevent_unregister(scf->ev, scf->fd);
scf->fdn = NULL;
FAMClose(&scf->fam);
@ -361,14 +360,16 @@ static handler_t stat_cache_handle_fdevent(void *ctx, int revent)
return HANDLER_GO_ON;
}
static stat_cache_fam * stat_cache_init_fam(server *srv) {
static stat_cache_fam * stat_cache_init_fam(fdevents *ev, log_error_st *errh) {
stat_cache_fam *scf = calloc(1, sizeof(*scf));
force_assert(scf);
scf->fd = -1;
scf->ev = ev;
scf->errh = errh;
/* setup FAM */
if (0 != FAMOpen2(&scf->fam, "lighttpd")) {
log_error(srv->errh, __FILE__, __LINE__,
log_error(errh, __FILE__, __LINE__,
"could not open a fam connection, dieing.");
return NULL;
}
@ -378,8 +379,8 @@ static stat_cache_fam * stat_cache_init_fam(server *srv) {
scf->fd = FAMCONNECTION_GETFD(&scf->fam);
fdevent_setfd_cloexec(scf->fd);
scf->fdn = fdevent_register(srv->ev, scf->fd, stat_cache_handle_fdevent, srv);
fdevent_fdnode_event_set(srv->ev, scf->fdn, FDEVENT_IN | FDEVENT_RDHUP);
scf->fdn = fdevent_register(scf->ev, scf->fd, stat_cache_handle_fdevent, scf);
fdevent_fdnode_event_set(scf->ev, scf->fdn, FDEVENT_IN | FDEVENT_RDHUP);
return scf;
}
@ -485,7 +486,7 @@ static fam_dir_entry * fam_dir_monitor(stat_cache_fam *scf, char *fn, size_t dir
if (0 != FAMMonitorDirectory(&scf->fam,fam_dir->name->ptr,&fam_dir->req,
(void *)(intptr_t)dir_ndx)) {
log_error(sc.errh, __FILE__, __LINE__,
log_error(scf->errh, __FILE__, __LINE__,
"monitoring dir failed: %s file: %s %s",
fam_dir->name->ptr, fn, FamErrlist[FAMErrno]);
fam_dir_entry_free(fam_dir);
@ -573,13 +574,15 @@ static int stat_cache_attr_get(char *name) {
#endif
int stat_cache_init(server *srv) {
int stat_cache_init(fdevents *ev, log_error_st *errh) {
#ifdef HAVE_FAM_H
if (sc.stat_cache_engine == STAT_CACHE_ENGINE_FAM) {
sc.errh = srv->errh;
sc.scf = stat_cache_init_fam(srv);
sc.scf = stat_cache_init_fam(ev, errh);
if (NULL == sc.scf) return 0;
}
#else
UNUSED(ev);
UNUSED(errh);
#endif
return 1;
@ -596,7 +599,6 @@ void stat_cache_free(void) {
#ifdef HAVE_FAM_H
stat_cache_free_fam(sc.scf);
sc.scf = NULL;
sc.errh = NULL;
#endif
#if defined(HAVE_XATTR) || defined(HAVE_EXTATTR)
@ -614,7 +616,7 @@ void stat_cache_xattrname (const char *name) {
#endif
}
int stat_cache_choose_engine (server *srv, const buffer *stat_cache_string) {
int stat_cache_choose_engine (const buffer *stat_cache_string, log_error_st *errh) {
if (buffer_string_is_empty(stat_cache_string))
sc.stat_cache_engine = STAT_CACHE_ENGINE_SIMPLE;
else if (buffer_eq_slen(stat_cache_string, CONST_STR_LEN("simple")))
@ -626,7 +628,7 @@ int stat_cache_choose_engine (server *srv, const buffer *stat_cache_string) {
else if (buffer_eq_slen(stat_cache_string, CONST_STR_LEN("disable")))
sc.stat_cache_engine = STAT_CACHE_ENGINE_NONE;
else {
log_error(srv->errh, __FILE__, __LINE__,
log_error(errh, __FILE__, __LINE__,
"server.stat-cache-engine can be one of \"disable\", \"simple\","
#ifdef HAVE_FAM_H
" \"fam\","

6
src/stat_cache.h
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@ -23,10 +23,12 @@ typedef struct {
} stat_cache_entry;
__attribute_cold__
int stat_cache_choose_engine (server *srv, const buffer *stat_cache_string);
int stat_cache_choose_engine (const buffer *stat_cache_string, log_error_st *errh);
struct fdevents; /* declaration */
__attribute_cold__
int stat_cache_init(server *srv);
int stat_cache_init(struct fdevents *ev, log_error_st *errh);
__attribute_cold__
void stat_cache_free(void);

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