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authorJosé Bollo <jose.bollo@iot.bzh>2017-08-02 18:48:27 +0200
committerJosé Bollo <jose.bollo@iot.bzh>2017-08-02 22:50:47 +0200
commit6d124e683d2511ac02a1cbe61fca3d230bda4f0c (patch)
tree1ae8b7d08efafcd53493c4c7c299c5291c270ed5
parentebd5f0805c5d697edefc47c0bad05af1fd807a15 (diff)
afb-xreq: integration of subcalls
The file afb-subcall is now integrated within afb-xreq. It improves memory allocation and performance of synchronous calls. Change-Id: I4190199babbe0559527438b530b19ac9a35ec38b Signed-off-by: José Bollo <jose.bollo@iot.bzh>
-rw-r--r--src/CMakeLists.txt1
-rw-r--r--src/afb-subcall.c118
-rw-r--r--src/afb-subcall.h30
-rw-r--r--src/afb-xreq.c301
4 files changed, 208 insertions, 242 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 7d2db4a5..4a65ba94 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -55,7 +55,6 @@ ADD_LIBRARY(afb-lib STATIC
afb-msg-json.c
afb-session.c
afb-stub-ws.c
- afb-subcall.c
afb-svc.c
afb-websock.c
afb-ws-client.c
diff --git a/src/afb-subcall.c b/src/afb-subcall.c
deleted file mode 100644
index 4af62747..00000000
--- a/src/afb-subcall.c
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2016, 2017 "IoT.bzh"
- * Author: José Bollo <jose.bollo@iot.bzh>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define _GNU_SOURCE
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <json-c/json.h>
-#include <afb/afb-event-itf.h>
-
-#include "afb-subcall.h"
-#include "afb-msg-json.h"
-#include "afb-apiset.h"
-#include "afb-context.h"
-#include "afb-xreq.h"
-#include "afb-cred.h"
-#include "verbose.h"
-
-struct subcall
-{
- struct afb_xreq xreq;
- struct afb_xreq *caller;
- void (*callback)(void*, int, struct json_object*);
- void *closure;
-};
-
-static void subcall_destroy(struct afb_xreq *xreq)
-{
- struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
-
- json_object_put(subcall->xreq.json);
- afb_cred_unref(subcall->xreq.cred);
- afb_xreq_unref(subcall->caller);
- free(subcall);
-}
-
-static void subcall_reply(struct afb_xreq *xreq, int status, struct json_object *obj)
-{
- struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
-
- subcall->callback(subcall->closure, status, obj);
- json_object_put(obj);
-}
-
-static int subcall_subscribe(struct afb_xreq *xreq, struct afb_event event)
-{
- struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
-
- return afb_xreq_subscribe(subcall->caller, event);
-}
-
-static int subcall_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
-{
- struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
-
- return afb_xreq_unsubscribe(subcall->caller, event);
-}
-
-const struct afb_xreq_query_itf afb_subcall_xreq_itf = {
- .reply = subcall_reply,
- .unref = subcall_destroy,
- .subscribe = subcall_subscribe,
- .unsubscribe = subcall_unsubscribe
-};
-
-void afb_subcall(
- struct afb_xreq *caller,
- const char *api,
- const char *verb,
- struct json_object *args,
- void (*callback)(void*, int, struct json_object*),
- void *closure
-)
-{
- struct subcall *subcall;
- size_t lenapi, lenverb;
- char *copy;
-
- lenapi = 1 + strlen(api);
- lenverb = 1 + strlen(verb);
- subcall = malloc(lenapi + lenverb + sizeof *subcall);
- if (subcall == NULL) {
- json_object_put(args); /* keep args existing */
- callback(closure, 1, afb_msg_json_internal_error());
- } else {
- afb_xreq_init(&subcall->xreq, &afb_subcall_xreq_itf);
- afb_context_subinit(&subcall->xreq.context, &caller->context);
- subcall->xreq.cred = afb_cred_addref(caller->cred);
- subcall->xreq.json = args;
- copy = (char*)&subcall[1];
- memcpy(copy, api, lenapi);
- subcall->xreq.api = copy;
- copy = &copy[lenapi];
- memcpy(copy, verb, lenverb);
- subcall->xreq.verb = copy;
- subcall->caller = caller;
- subcall->callback = callback;
- subcall->closure = closure;
- afb_xreq_addref(caller);
- afb_xreq_process(&subcall->xreq, caller->apiset);
- }
-}
-
diff --git a/src/afb-subcall.h b/src/afb-subcall.h
deleted file mode 100644
index 082b02c8..00000000
--- a/src/afb-subcall.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2016, 2017 "IoT.bzh"
- * Author: José Bollo <jose.bollo@iot.bzh>
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-struct afb_xreq;
-struct json_object;
-
-extern void afb_subcall(
- struct afb_xreq *caller,
- const char *api,
- const char *verb,
- struct json_object *args,
- void (*callback)(void*, int, struct json_object*),
- void *closure);
-
diff --git a/src/afb-xreq.c b/src/afb-xreq.c
index cd0b0866..ec3a8fe2 100644
--- a/src/afb-xreq.c
+++ b/src/afb-xreq.c
@@ -31,7 +31,7 @@
#include "afb-xreq.h"
#include "afb-evt.h"
#include "afb-msg-json.h"
-#include "afb-subcall.h"
+#include "afb-cred.h"
#include "afb-hook.h"
#include "afb-api.h"
#include "afb-apiset.h"
@@ -41,6 +41,159 @@
/******************************************************************************/
+static inline void xreq_addref(struct afb_xreq *xreq)
+{
+ __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
+}
+
+static inline void xreq_unref(struct afb_xreq *xreq)
+{
+ if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
+ if (xreq->hookflags)
+ afb_hook_xreq_end(xreq);
+ xreq->queryitf->unref(xreq);
+ }
+}
+
+/******************************************************************************/
+
+struct subcall
+{
+ struct afb_xreq xreq;
+ struct afb_xreq *caller;
+ void (*callback)(void*, int, struct json_object*);
+ void *closure;
+ union {
+ struct {
+ struct jobloop *jobloop;
+ struct json_object *result;
+ int status;
+ };
+ struct {
+ void (*callback)(void*, int, struct json_object*);
+ void *closure;
+ } hooked;
+ };
+};
+
+static int subcall_subscribe(struct afb_xreq *xreq, struct afb_event event)
+{
+ struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
+
+ return afb_xreq_subscribe(subcall->caller, event);
+}
+
+static int subcall_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
+{
+ struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
+
+ return afb_xreq_unsubscribe(subcall->caller, event);
+}
+
+static void subcall_reply(struct afb_xreq *xreq, int status, struct json_object *obj)
+{
+ struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
+
+ if (subcall->callback)
+ subcall->callback(subcall->closure, status, obj);
+ json_object_put(obj);
+}
+
+static void subcall_destroy(struct afb_xreq *xreq)
+{
+ struct subcall *subcall = CONTAINER_OF_XREQ(struct subcall, xreq);
+
+ json_object_put(subcall->xreq.json);
+ afb_cred_unref(subcall->xreq.cred);
+ xreq_unref(subcall->caller);
+ free(subcall);
+}
+
+const struct afb_xreq_query_itf afb_xreq_subcall_itf = {
+ .reply = subcall_reply,
+ .unref = subcall_destroy,
+ .subscribe = subcall_subscribe,
+ .unsubscribe = subcall_unsubscribe
+};
+
+static struct subcall *subcall_alloc(
+ struct afb_xreq *caller,
+ const char *api,
+ const char *verb,
+ struct json_object *args
+)
+{
+ struct subcall *subcall;
+ size_t lenapi, lenverb;
+ char *copy;
+
+ lenapi = 1 + strlen(api);
+ lenverb = 1 + strlen(verb);
+ subcall = malloc(lenapi + lenverb + sizeof *subcall);
+ if (!subcall)
+ ERROR("out of memory");
+ else {
+ copy = (char*)&subcall[1];
+ memcpy(copy, api, lenapi);
+ api = copy;
+ copy = &copy[lenapi];
+ memcpy(copy, verb, lenverb);
+ verb = copy;
+
+ afb_xreq_init(&subcall->xreq, &afb_xreq_subcall_itf);
+ afb_context_subinit(&subcall->xreq.context, &caller->context);
+ subcall->xreq.cred = afb_cred_addref(caller->cred);
+ subcall->xreq.json = args;
+ subcall->xreq.api = api;
+ subcall->xreq.verb = verb;
+ subcall->caller = caller;
+ xreq_addref(caller);
+ }
+ return subcall;
+}
+
+static void subcall_process(struct subcall *subcall)
+{
+ if (subcall->caller->queryitf->subcall) {
+ subcall->caller->queryitf->subcall(
+ subcall->caller, subcall->xreq.api, subcall->xreq.verb,
+ subcall->xreq.json, subcall->callback, subcall->closure);
+ xreq_unref(&subcall->xreq);
+ } else
+ afb_xreq_process(&subcall->xreq, subcall->caller->apiset);
+}
+
+static void subcall_sync_leave(struct subcall *subcall)
+{
+ struct jobloop *jobloop = __atomic_exchange_n(&subcall->jobloop, NULL, __ATOMIC_RELAXED);
+ if (jobloop)
+ jobs_leave(jobloop);
+}
+
+static void subcall_sync_reply(void *closure, int status, struct json_object *obj)
+{
+ struct subcall *subcall = closure;
+
+ subcall->status = status;
+ subcall->result = json_object_get(obj);
+ subcall_sync_leave(subcall);
+}
+
+static void subcall_sync_enter(int signum, void *closure, struct jobloop *jobloop)
+{
+ struct subcall *subcall = closure;
+
+ if (!signum) {
+ subcall->jobloop = jobloop;
+ subcall_process(subcall);
+ } else {
+ subcall->status = -1;
+ subcall_sync_leave(subcall);
+ }
+}
+
+/******************************************************************************/
+
static void vinfo(void *first, void *second, const char *fmt, va_list args, void (*fun)(void*,void*,const char*))
{
char *info;
@@ -138,15 +291,13 @@ static void xreq_context_set_cb(void *closure, void *value, void (*free_value)(v
static void xreq_addref_cb(void *closure)
{
struct afb_xreq *xreq = closure;
- __atomic_add_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED);
+ xreq_addref(xreq);
}
static void xreq_unref_cb(void *closure)
{
struct afb_xreq *xreq = closure;
- if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
- xreq->queryitf->unref(xreq);
- }
+ xreq_unref(xreq);
}
static void xreq_session_close_cb(void *closure)
@@ -198,79 +349,50 @@ int afb_xreq_unsubscribe(struct afb_xreq *xreq, struct afb_event event)
static void xreq_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
{
struct afb_xreq *xreq = closure;
+ struct subcall *subcall;
- if (xreq->queryitf->subcall) {
- xreq->queryitf->subcall(xreq, api, verb, args, callback, cb_closure);
+ subcall = subcall_alloc(xreq, api, verb, args);
+ if (subcall == NULL) {
+ if (callback)
+ callback(cb_closure, 1, afb_msg_json_internal_error());
json_object_put(args);
} else {
- afb_subcall(xreq, api, verb, args, callback, cb_closure);
- }
-}
-
-struct xreq_sync
-{
- struct afb_xreq *caller;
- const char *api;
- const char *verb;
- struct json_object *args;
- struct jobloop *jobloop;
- struct json_object *result;
- int status;
-};
-
-static void xreq_sync_leave(struct xreq_sync *sync)
-{
- struct jobloop *jobloop = sync->jobloop;
- if (jobloop) {
- sync->jobloop = NULL;
- jobs_leave(jobloop);
- }
-}
-
-static void xreq_sync_reply(void *closure, int status, struct json_object *obj)
-{
- struct xreq_sync *sync = closure;
-
- sync->status = status;
- sync->result = json_object_get(obj);
- xreq_sync_leave(sync);
-}
-
-static void xreq_sync_enter(int signum, void *closure, struct jobloop *jobloop)
-{
- struct xreq_sync *sync = closure;
-
- if (!signum) {
- sync->jobloop = jobloop;
- xreq_subcall_cb(sync->caller, sync->api, sync->verb, json_object_get(sync->args), xreq_sync_reply, sync);
- } else {
- sync->status = -1;
- xreq_sync_leave(sync);
+ subcall->callback = callback;
+ subcall->closure = cb_closure;
+ subcall_process(subcall);
}
}
static int xreq_subcallsync_cb(void *closure, const char *api, const char *verb, struct json_object *args, struct json_object **result)
{
int rc;
- struct xreq_sync sync;
+ struct subcall *subcall;
struct afb_xreq *xreq = closure;
+ struct json_object *resu;
- sync.caller = xreq;
- sync.api = api;
- sync.verb = verb;
- sync.args = args;
- sync.jobloop = NULL;
- sync.result = NULL;
- sync.status = 0;
-
- rc = jobs_enter(NULL, 0, xreq_sync_enter, &sync);
- json_object_put(args);
- if (rc < 0 || sync.status < 0) {
- *result = sync.result ? : afb_msg_json_internal_error();
- return -1;
+ subcall = subcall_alloc(xreq, api, verb, args);
+ if (!subcall) {
+ rc = -1;
+ resu = afb_msg_json_internal_error();
+ json_object_put(args);
+ } else {
+ subcall->callback = subcall_sync_reply;
+ subcall->closure = subcall;
+ subcall->jobloop = NULL;
+ subcall->result = NULL;
+ subcall->status = 0;
+ rc = jobs_enter(NULL, 0, subcall_sync_enter, subcall);
+ resu = subcall->result;
+ if (rc < 0 || subcall->status < 0) {
+ resu = resu ?: afb_msg_json_internal_error();
+ rc = -1;
+ }
}
- *result = sync.result;
- return 0;
+ if (result)
+ *result = resu;
+ else
+ json_object_put(resu);
+ return rc;
}
static void xreq_vverbose_cb(void*closure, int level, const char *file, int line, const char *func, const char *fmt, va_list args)
@@ -350,10 +472,7 @@ static void xreq_hooked_unref_cb(void *closure)
{
struct afb_xreq *xreq = closure;
afb_hook_xreq_unref(xreq);
- if (!__atomic_sub_fetch(&xreq->refcount, 1, __ATOMIC_RELAXED)) {
- afb_hook_xreq_end(xreq);
- xreq->queryitf->unref(xreq);
- }
+ xreq_unref_cb(closure);
}
static void xreq_hooked_session_close_cb(void *closure)
@@ -384,35 +503,31 @@ static int xreq_hooked_unsubscribe_cb(void *closure, struct afb_event event)
return afb_hook_xreq_unsubscribe(xreq, event, r);
}
-struct reply
-{
- struct afb_xreq *xreq;
- void (*callback)(void*, int, struct json_object*);
- void *closure;
-};
-
static void xreq_hooked_subcall_reply_cb(void *closure, int status, struct json_object *result)
{
- struct reply *reply = closure;
+ struct subcall *subcall = closure;
- afb_hook_xreq_subcall_result(reply->xreq, status, result);
- reply->callback(reply->closure, status, result);
- free(reply);
+ afb_hook_xreq_subcall_result(subcall->caller, status, result);
+ subcall->hooked.callback(subcall->hooked.closure, status, result);
}
static void xreq_hooked_subcall_cb(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure)
{
- struct reply *reply = malloc(sizeof *reply);
struct afb_xreq *xreq = closure;
+ struct subcall *subcall;
+
afb_hook_xreq_subcall(xreq, api, verb, args);
- if (reply) {
- reply->xreq = xreq;
- reply->callback = callback;
- reply->closure = cb_closure;
- xreq_subcall_cb(closure, api, verb, args, xreq_hooked_subcall_reply_cb, reply);
+ subcall = subcall_alloc(xreq, api, verb, args);
+ if (subcall == NULL) {
+ if (callback)
+ callback(cb_closure, 1, afb_msg_json_internal_error());
+ json_object_put(args);
} else {
- ERROR("out of memory");
- xreq_subcall_cb(closure, api, verb, args, callback, cb_closure);
+ subcall->callback = xreq_hooked_subcall_reply_cb;
+ subcall->closure = subcall;
+ subcall->hooked.callback = callback;
+ subcall->hooked.closure = cb_closure;
+ subcall_process(subcall);
}
}
@@ -723,20 +838,20 @@ static void process_async(int signum, void *arg)
} else {
process_sync(xreq);
}
- afb_xreq_unref(xreq);
+ xreq_unref(xreq);
}
void afb_xreq_process(struct afb_xreq *xreq, struct afb_apiset *apiset)
{
xreq->apiset = apiset;
- afb_xreq_addref(xreq);
+ xreq_addref(xreq);
if (jobs_queue(NULL, afb_apiset_timeout_get(apiset), process_async, xreq) < 0) {
/* TODO: allows or not to proccess it directly as when no threading? (see above) */
ERROR("can't process job with threads: %m");
afb_xreq_fail_f(xreq, "cancelled", "not able to create a job for the task");
- afb_xreq_unref(xreq);
+ xreq_unref(xreq);
}
- afb_xreq_unref(xreq);
+ xreq_unref(xreq);
}