From patchwork Fri Oct 2 14:31:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paul Elder X-Patchwork-Id: 9939 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 8B8B7C3B5C for ; Fri, 2 Oct 2020 14:33:22 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 57F6A63BE6; Fri, 2 Oct 2020 16:33:22 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="gk9clwKO"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 1098063B98 for ; Fri, 2 Oct 2020 16:33:21 +0200 (CEST) Received: from pyrite.rasen.tech (unknown [IPv6:2400:4051:61:600:2c71:1b79:d06d:5032]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 05B7B528; Fri, 2 Oct 2020 16:33:18 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1601649200; bh=suC8FhA7ExotBNs3cFppm5Y1UW8OWFfLvA8kVH+GnyI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gk9clwKOUQ/gDMHblzl2HGojVEK/6JH+AQWQre0w+OWyeVIn5xnmyYbGtdWsNL0au jCP++rCf7AiO8j5yFDFlYc1jRNt93NDHdrsGzRbYtH2vp+Jidc+cA+Kf1b7QQdKTu7 A8IzEnOKYkM9iGwLRcAFkXbqy+O8fnwnXGp6kHuY= From: Paul Elder To: libcamera-devel@lists.libcamera.org Date: Fri, 2 Oct 2020 23:31:47 +0900 Message-Id: <20201002143154.468162-32-paul.elder@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20201002143154.468162-1-paul.elder@ideasonboard.com> References: <20201002143154.468162-1-paul.elder@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v3 31/38] libcamera: IPAProxy: Remove registration mechanism X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Implementations of IPA proxies use a registration mechanism to register themselves with the main IPA proxy factory. This registration declares static objects, causing a risk of things being constructed before the proper libcamera facilities are ready. Since each pipeline handler has its own IPA proxy and knows the type, it isn't necessary to have a proxy factory. Remove it to alleviate the risk of early construction. Signed-off-by: Paul Elder Reviewed-by: Niklas Söderlund --- No change in v3 Changes in v2: - remove documentation --- include/libcamera/internal/ipa_proxy.h | 29 -------- src/libcamera/ipa_proxy.cpp | 93 -------------------------- 2 files changed, 122 deletions(-) diff --git a/include/libcamera/internal/ipa_proxy.h b/include/libcamera/internal/ipa_proxy.h index 1903150e..f651a3ae 100644 --- a/include/libcamera/internal/ipa_proxy.h +++ b/include/libcamera/internal/ipa_proxy.h @@ -36,35 +36,6 @@ private: IPAModule *ipam_; }; -class IPAProxyFactory -{ -public: - IPAProxyFactory(const char *name); - virtual ~IPAProxyFactory() {} - - virtual std::unique_ptr create(IPAModule *ipam, bool isolate) = 0; - - const std::string &name() const { return name_; } - - static void registerType(IPAProxyFactory *factory); - static std::vector &factories(); - -private: - std::string name_; -}; - -#define REGISTER_IPA_PROXY(proxy) \ -class proxy##Factory final : public IPAProxyFactory \ -{ \ -public: \ - proxy##Factory() : IPAProxyFactory(#proxy) {} \ - std::unique_ptr create(IPAModule *ipam, bool isolate) \ - { \ - return std::make_unique(ipam, isolate); \ - } \ -}; \ -static proxy##Factory global_##proxy##Factory; - } /* namespace libcamera */ #endif /* __LIBCAMERA_INTERNAL_IPA_PROXY_H__ */ diff --git a/src/libcamera/ipa_proxy.cpp b/src/libcamera/ipa_proxy.cpp index ee5e6f3e..29c0e9e0 100644 --- a/src/libcamera/ipa_proxy.cpp +++ b/src/libcamera/ipa_proxy.cpp @@ -30,17 +30,11 @@ LOG_DEFINE_CATEGORY(IPAProxy) * \brief IPA Proxy * * Isolate IPA into separate process. - * - * Every subclass of proxy shall be registered with libcamera using - * the REGISTER_IPA_PROXY() macro. */ /** * \brief Construct an IPAProxy instance * \param[in] ipam The IPA module - * - * IPAProxy instances shall be constructed through the IPAProxyFactory::create() - * method implemented by the respective factories. */ IPAProxy::IPAProxy(IPAModule *ipam) : valid_(false), ipam_(ipam) @@ -219,91 +213,4 @@ std::string IPAProxy::resolvePath(const std::string &file) const * construction. */ -/** - * \class IPAProxyFactory - * \brief Registration of IPAProxy classes and creation of instances - * - * To facilitate discovery and instantiation of IPAProxy classes, the - * IPAProxyFactory class maintains a registry of IPAProxy classes. Each - * IPAProxy subclass shall register itself using the REGISTER_IPA_PROXY() - * macro, which will create a corresponding instance of a IPAProxyFactory - * subclass and register it with the static list of factories. - */ - -/** - * \brief Construct a IPAProxy factory - * \param[in] name Name of the IPAProxy class - * - * Creating an instance of the factory registers is with the global list of - * factories, accessible through the factories() function. - * - * The factory \a name is used for debugging and IPAProxy matching purposes - * and shall be unique. - */ -IPAProxyFactory::IPAProxyFactory(const char *name) - : name_(name) -{ - registerType(this); -} - -/** - * \fn IPAProxyFactory::create() - * \brief Create an instance of the IPAProxy corresponding to the factory - * \param[in] ipam The IPA module - * \param[in] isolate Flag to isolate the IPA module - * - * This virtual function is implemented by the REGISTER_IPA_PROXY() macro. - * It creates a IPAProxy instance that isolates an IPA interface designated - * by the IPA module \a ipam. If \a isolate is true, then the IPA module will - * be isolated. - * - * \return A pointer to a newly constructed instance of the IPAProxy subclass - * corresponding to the factory - */ - -/** - * \fn IPAProxyFactory::name() - * \brief Retrieve the factory name - * \return The factory name - */ - -/** - * \brief Add a IPAProxy class to the registry - * \param[in] factory Factory to use to construct the IPAProxy - * - * The caller is responsible to guarantee the uniqueness of the IPAProxy name. - */ -void IPAProxyFactory::registerType(IPAProxyFactory *factory) -{ - std::vector &factories = IPAProxyFactory::factories(); - - factories.push_back(factory); - - LOG(IPAProxy, Debug) - << "Registered proxy \"" << factory->name() << "\""; -} - -/** - * \brief Retrieve the list of all IPAProxy factories - * - * The static factories map is defined inside the function to ensure it gets - * initialized on first use, without any dependency on link order. - * - * \return The list of pipeline handler factories - */ -std::vector &IPAProxyFactory::factories() -{ - static std::vector factories; - return factories; -} - -/** - * \def REGISTER_IPA_PROXY - * \brief Register a IPAProxy with the IPAProxy factory - * \param[in] proxy Class name of IPAProxy derived class to register - * - * Register a proxy subclass with the factory and make it available to - * isolate IPA modules. - */ - } /* namespace libcamera */