mirror of
https://github.com/ByteWelder/Tactility.git
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106 lines
3.0 KiB
C++
106 lines
3.0 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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#include <tactility/service/service_instance.h>
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#include <tactility/service/service_context.h>
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#include <tactility/concurrent/mutex.h>
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#include <tactility/log.h>
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#include <new>
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#define TAG "service_instance"
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struct ServiceInstanceInternal {
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Mutex mutex {};
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ServiceState state = SERVICE_STATE_STOPPED;
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uint32_t use_count = 0;
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};
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extern "C" {
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error_t service_instance_construct(ServiceInstance* instance, const ServiceManifest* manifest) {
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instance->internal = new(std::nothrow) ServiceInstanceInternal;
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if (instance->internal == nullptr) {
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return ERROR_OUT_OF_MEMORY;
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}
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mutex_construct(&instance->internal->mutex);
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instance->manifest = manifest;
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instance->data = nullptr;
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instance->on_start = nullptr;
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instance->on_stop = nullptr;
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manifest->create_service(instance, manifest->context);
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LOG_D(TAG, "construct %s", manifest->id);
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return ERROR_NONE;
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}
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error_t service_instance_destruct(ServiceInstance* instance) {
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auto* internal = instance->internal;
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mutex_lock(&internal->mutex);
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if (internal->state != SERVICE_STATE_STOPPED) {
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mutex_unlock(&internal->mutex);
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return ERROR_INVALID_STATE;
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}
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mutex_unlock(&internal->mutex);
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LOG_D(TAG, "destruct %s", instance->manifest->id);
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instance->manifest->destroy_service(instance, instance->manifest->context);
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instance->data = nullptr;
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instance->on_start = nullptr;
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instance->on_stop = nullptr;
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instance->internal = nullptr;
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mutex_destruct(&internal->mutex);
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delete internal;
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return ERROR_NONE;
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}
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const ServiceManifest* service_instance_get_manifest(ServiceInstance* instance) {
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return instance->manifest;
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}
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void* service_instance_get_data(ServiceInstance* instance) {
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return instance->data;
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}
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ServiceState service_instance_get_state(ServiceInstance* instance) {
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mutex_lock(&instance->internal->mutex);
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ServiceState state = instance->internal->state;
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mutex_unlock(&instance->internal->mutex);
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return state;
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}
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/** Internal-only: mutate the state of a service instance. Used by service_registration.cpp. */
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void service_instance_set_state(ServiceInstance* instance, ServiceState state) {
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mutex_lock(&instance->internal->mutex);
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instance->internal->state = state;
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mutex_unlock(&instance->internal->mutex);
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}
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const ServiceManifest* service_context_get_manifest(ServiceContext* context) {
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return service_instance_get_manifest(context);
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}
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bool service_instance_try_get(struct ServiceInstance* instance) {
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mutex_lock(&instance->internal->mutex);
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bool acquired = instance->internal->state == SERVICE_STATE_STARTED;
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if (acquired) {
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instance->internal->use_count++;
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}
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mutex_unlock(&instance->internal->mutex);
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return acquired;
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}
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void service_instance_put(struct ServiceInstance* instance) {
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mutex_lock(&instance->internal->mutex);
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if (instance->internal->use_count > 0) {
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instance->internal->use_count--;
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}
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mutex_unlock(&instance->internal->mutex);
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}
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} // extern "C"
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