2024-01-03 14:13:13 +01:00

309 lines
8.5 KiB
C

#include "loader.h"
#include "app_i.h"
#include "app_manifest.h"
#include "app_manifest_registry.h"
#include "loader_i.h"
#include <sys/cdefs.h>
#include "esp_heap_caps.h"
#include "apps/services/gui/gui.h"
#define TAG "Loader"
static int32_t loader_main(void* p);
static LoaderStatus loader_do_start_by_id(
Loader* loader,
const char* id,
const char* args,
FuriString* error_message
);
LoaderStatus loader_start_app(Loader* loader, const char* id, const char* args, FuriString* error_message) {
LoaderMessage message;
LoaderMessageLoaderStatusResult result;
message.type = LoaderMessageTypeStartByName;
message.start.id = id;
message.start.args = args;
message.start.error_message = error_message;
message.api_lock = api_lock_alloc_locked();
message.status_value = &result;
furi_message_queue_put(loader->queue, &message, FuriWaitForever);
api_lock_wait_unlock_and_free(message.api_lock);
return result.value;
}
void loader_start_app_nonblocking(Loader* loader, const char* id, const char* args) {
LoaderMessage message;
LoaderMessageLoaderStatusResult result;
message.type = LoaderMessageTypeStartByName;
message.start.id = id;
message.start.args = args;
message.start.error_message = NULL;
message.api_lock = NULL;
message.status_value = &result;
furi_message_queue_put(loader->queue, &message, FuriWaitForever);
}
void loader_stop_app(Loader* loader) {
LoaderMessage message;
message.type = LoaderMessageTypeAppStop;
furi_message_queue_put(loader->queue, &message, FuriWaitForever);
}
const AppManifest* _Nullable loader_get_current_app(Loader* loader) {
App* app = loader->app_data.app;
if (app != NULL) {
return app->manifest;
} else {
return NULL;
}
}
FuriPubSub* loader_get_pubsub(Loader* loader) {
furi_assert(loader);
// it's safe to return pubsub without locking
// because it's never freed and loader is never exited
// also the loader instance cannot be obtained until the pubsub is created
return loader->pubsub;
}
// implementation
static Loader* loader_alloc() {
Loader* loader = malloc(sizeof(Loader));
loader->pubsub = furi_pubsub_alloc();
loader->queue = furi_message_queue_alloc(1, sizeof(LoaderMessage));
loader->thread = furi_thread_alloc_ex(
"loader",
2048,
&loader_main,
NULL
);
loader->app_data.args = NULL;
loader->app_data.app = NULL;
return loader;
}
static void loader_free(Loader* loader) {
furi_pubsub_free(loader->pubsub);
furi_message_queue_free(loader->queue);
furi_thread_free(loader->thread);
free(loader);
}
static void loader_log_status_error(
LoaderStatus status,
FuriString* error_message,
const char* format,
va_list args
) {
if (error_message) {
furi_string_vprintf(error_message, format, args);
FURI_LOG_E(TAG, "Status [%d]: %s", status, furi_string_get_cstr(error_message));
} else {
FURI_LOG_E(TAG, "Status [%d]", status);
}
}
static LoaderStatus loader_make_status_error(
LoaderStatus status,
FuriString* _Nullable error_message,
const char* format,
...
) {
va_list args;
va_start(args, format);
loader_log_status_error(status, error_message, format, args);
va_end(args);
return status;
}
static LoaderStatus loader_make_success_status(FuriString* error_message) {
if (error_message) {
furi_string_set(error_message, "App started");
}
return LoaderStatusOk;
}
static void loader_start_app_with_manifest(
Loader* loader,
const AppManifest* _Nonnull manifest,
const char* args
) {
if (manifest->type != AppTypeUser && manifest->type != AppTypeSystem) {
furi_crash("app type not supported by loader");
}
App* _Nonnull app = furi_app_alloc(manifest);
loader->app_data.app = app;
loader->app_data.args = (void*)args;
if (manifest->on_start != NULL) {
manifest->on_start((void*)args);
}
if (manifest->on_show != NULL) {
ViewPort* view_port = view_port_alloc();
loader->app_data.view_port = view_port;
view_port_draw_callback_set(view_port, manifest->on_show, NULL);
FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
gui_add_view_port(gui, view_port, GuiLayerWindow);
})
} else {
loader->app_data.view_port = NULL;
}
}
// process messages
static LoaderStatus loader_do_start_by_id(
Loader* loader,
const char* id,
const char* args,
FuriString* _Nullable error_message
) {
FURI_LOG_I(TAG, "loader start by id %s", id);
const AppManifest* manifest = app_manifest_registry_find_by_id(id);
if (manifest == NULL) {
return loader_make_status_error(
LoaderStatusErrorUnknownApp,
error_message,
"Application \"%s\" not found",
id
);
}
loader_start_app_with_manifest(loader, manifest, args);
return loader_make_success_status(error_message);
}
static void loader_do_stop_app(Loader* loader) {
App* app = loader->app_data.app;
if (app == NULL) {
FURI_LOG_W(TAG, "Stop app: no app running");
return;
}
FURI_LOG_I(TAG, "Stopping %s", app->manifest->id);
ViewPort* view_port = loader->app_data.view_port;
if (view_port) {
FURI_RECORD_TRANSACTION(RECORD_GUI, Gui*, gui, {
gui_remove_view_port(gui, view_port);
})
view_port_free(view_port);
loader->app_data.view_port = NULL;
}
if (app->manifest->on_stop) {
app->manifest->on_stop();
}
if (loader->app_data.args) {
free(loader->app_data.args);
loader->app_data.args = NULL;
}
furi_app_free(loader->app_data.app);
loader->app_data.app = NULL;
FURI_LOG_I(
TAG,
"Application stopped. Free heap: %zu",
heap_caps_get_free_size(MALLOC_CAP_INTERNAL)
);
LoaderEvent event;
event.type = LoaderEventTypeApplicationStopped;
furi_pubsub_publish(loader->pubsub, &event);
}
// app
static int32_t loader_main(void* p) {
UNUSED(p);
FuriMessageQueue* queue = NULL;
FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
queue = loader->queue;
})
furi_check(queue != NULL);
LoaderMessage message;
bool exit_requested = false;
while (!exit_requested) {
if (furi_message_queue_get(queue, &message, FuriWaitForever) == FuriStatusOk) {
FURI_LOG_I(TAG, "processing message of type %d", message.type);
switch (message.type) {
case LoaderMessageTypeStartByName:
FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
if (loader->app_data.app) {
loader_do_stop_app(loader);
}
message.status_value->value = loader_do_start_by_id(
loader,
message.start.id,
message.start.args,
message.start.error_message
);
if (message.api_lock) {
api_lock_unlock(message.api_lock);
}
})
break;
case LoaderMessageTypeAppStop:
FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
loader_do_stop_app(loader);
})
break;
case LoaderMessageTypeExit:
exit_requested = true;
break;
}
}
}
return 0;
}
static void loader_start(void* p) {
Loader* loader = loader_alloc();
furi_record_create(RECORD_LOADER, loader);
furi_thread_set_priority(loader->thread, FuriThreadPriorityHigh);
furi_thread_start(loader->thread);
}
static void loader_stop() {
LoaderMessage message = {
.api_lock = NULL,
.type = LoaderMessageTypeExit
};
FURI_RECORD_TRANSACTION(RECORD_LOADER, Loader*, loader, {
furi_message_queue_put(loader->queue, &message, FuriWaitForever);
furi_thread_join(loader->thread);
furi_thread_free(loader->thread);
loader->thread = NULL;
loader_free(loader);
})
furi_record_destroy(RECORD_LOADER);
}
const AppManifest loader_app = {
.id = "loader",
.name = "Loader",
.icon = NULL,
.type = AppTypeService,
.on_start = &loader_start,
.on_stop = &loader_stop,
.on_show = NULL,
.stack_size = AppStackSizeNormal
};