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server: move worker count to render_worker_jail

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Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Ryan Neph <ryanneph@google.com>
macos/master
Chia-I Wu 3 years ago
parent 751d731577
commit bcd4a601b6
5 changed files with 42 additions and 23 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 13
      server/render_client.c
  2. 5
      server/render_server.c
  3. 2
      server/render_server.h
  4. 40
      server/render_worker.c
  5. 5
      server/render_worker.h

13
server/render_client.c
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@ -51,9 +51,8 @@ render_client_detach_all_records(struct render_client *client)
list_splicetail(&client->context_records, &client->reap_records);
list_for_each_entry_safe (struct render_context_record, rec, &client->reap_records,
head) {
render_worker_destroy(rec->worker);
render_worker_destroy(srv->worker_jail, rec->worker);
free(rec);
srv->current_worker_count--;
}
list_inithead(&client->context_records);
@ -90,11 +89,9 @@ render_client_reap_all_records(struct render_client *client, bool wait)
if (!render_worker_reap(rec->worker, wait))
continue;
render_worker_destroy(rec->worker);
render_worker_destroy(srv->worker_jail, rec->worker);
list_del(&rec->head);
free(rec);
srv->current_worker_count--;
}
}
@ -133,11 +130,6 @@ render_client_create_context(struct render_client *client,
{
struct render_server *srv = client->server;
if (srv->current_worker_count >= srv->max_worker_count) {
render_log("too many context workers");
return false;
}
struct render_context_record *rec = calloc(1, sizeof(*rec));
if (!rec)
return false;
@ -171,7 +163,6 @@ render_client_create_context(struct render_client *client,
rec->ctx_id = req->ctx_id;
list_addtail(&rec->head, &client->context_records);
srv->current_worker_count++;
if (!render_worker_is_record(rec->worker)) {
/* this is the child process */

5
server/render_server.c
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@ -31,7 +31,6 @@ render_server_fini(struct render_server *srv)
{
if (srv->client)
render_client_destroy(srv->client);
assert(srv->current_worker_count == 0);
if (srv->worker_jail)
render_worker_jail_destroy(srv->worker_jail);
@ -109,7 +108,6 @@ render_server_init(struct render_server *srv,
srv->state = RENDER_SERVER_STATE_RUN;
srv->context_args = ctx_args;
srv->client_fd = -1;
srv->max_worker_count = RENDER_SERVER_MAX_WORKER_COUNT;
if (!render_server_parse_options(srv, argc, argv))
return false;
@ -128,7 +126,8 @@ render_server_init(struct render_server *srv,
seccomp_path = srv->worker_seccomp_minijail_policy;
}
srv->worker_jail = render_worker_jail_create(seccomp_filter, seccomp_path);
srv->worker_jail = render_worker_jail_create(RENDER_SERVER_MAX_WORKER_COUNT,
seccomp_filter, seccomp_path);
if (!srv->worker_jail) {
render_log("failed to create worker jail");
goto fail;

2
server/render_server.h
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@ -26,8 +26,6 @@ struct render_server {
bool worker_seccomp_minijail_log;
struct render_worker_jail *worker_jail;
int max_worker_count;
int current_worker_count;
/* only one client in the current design */
struct render_client *client;

40
server/render_worker.c
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@ -31,7 +31,11 @@
struct minijail;
struct render_worker_jail {
int max_worker_count;
struct minijail *minijail;
int worker_count;
};
struct render_worker {
@ -148,14 +152,33 @@ fork_minijail(const struct minijail *template)
#endif /* ENABLE_RENDER_SERVER_WORKER_MINIJAIL */
static void
render_worker_jail_add_worker(struct render_worker_jail *jail,
UNUSED struct render_worker *worker)
{
jail->worker_count++;
}
static void
render_worker_jail_remove_worker(struct render_worker_jail *jail,
struct render_worker *worker)
{
jail->worker_count--;
free(worker);
}
struct render_worker_jail *
render_worker_jail_create(enum render_worker_jail_seccomp_filter seccomp_filter,
render_worker_jail_create(int max_worker_count,
enum render_worker_jail_seccomp_filter seccomp_filter,
const char *seccomp_path)
{
struct render_worker_jail *jail = calloc(1, sizeof(*jail));
if (!jail)
return NULL;
jail->max_worker_count = max_worker_count;
#if defined(ENABLE_RENDER_SERVER_WORKER_MINIJAIL)
jail->minijail = create_minijail(seccomp_filter, seccomp_path);
if (!jail->minijail)
@ -177,6 +200,8 @@ fail:
void
render_worker_jail_destroy(struct render_worker_jail *jail)
{
assert(!jail->worker_count);
#if defined(ENABLE_RENDER_SERVER_WORKER_MINIJAIL)
minijail_destroy(jail->minijail);
#endif
@ -190,6 +215,11 @@ render_worker_create(struct render_worker_jail *jail,
void *thread_data,
size_t thread_data_size)
{
if (jail->worker_count >= jail->max_worker_count) {
render_log("too many workers");
return NULL;
}
struct render_worker *worker = calloc(1, sizeof(*worker) + thread_data_size);
if (!worker)
return NULL;
@ -200,11 +230,9 @@ render_worker_create(struct render_worker_jail *jail,
#if defined(ENABLE_RENDER_SERVER_WORKER_PROCESS)
worker->pid = fork();
ok = worker->pid >= 0;
(void)jail;
(void)thread_func;
#elif defined(ENABLE_RENDER_SERVER_WORKER_THREAD)
ok = thrd_create(&worker->thread, thread_func, worker->thread_data) == thrd_success;
(void)jail;
#elif defined(ENABLE_RENDER_SERVER_WORKER_MINIJAIL)
worker->pid = fork_minijail(jail->minijail);
ok = worker->pid >= 0;
@ -215,6 +243,8 @@ render_worker_create(struct render_worker_jail *jail,
return NULL;
}
render_worker_jail_add_worker(jail, worker);
return worker;
}
@ -265,7 +295,7 @@ render_worker_reap(struct render_worker *worker, bool wait)
}
void
render_worker_destroy(struct render_worker *worker)
render_worker_destroy(struct render_worker_jail *jail, struct render_worker *worker)
{
free(worker);
render_worker_jail_remove_worker(jail, worker);
}

5
server/render_worker.h
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@ -19,7 +19,8 @@ enum render_worker_jail_seccomp_filter {
};
struct render_worker_jail *
render_worker_jail_create(enum render_worker_jail_seccomp_filter seccomp_filter,
render_worker_jail_create(int max_worker_count,
enum render_worker_jail_seccomp_filter seccomp_filter,
const char *seccomp_path);
void
@ -41,6 +42,6 @@ bool
render_worker_reap(struct render_worker *worker, bool wait);
void
render_worker_destroy(struct render_worker *worker);
render_worker_destroy(struct render_worker_jail *jail, struct render_worker *worker);
#endif /* RENDER_WORKER_H */

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