From 1013e3c216cdf8e0ecc0f3b1e8314989b5333818 Mon Sep 17 00:00:00 2001 From: Mikko Rasa Date: Mon, 21 Aug 2006 17:04:11 +0000 Subject: [PATCH] Add files --- License.txt | 510 +++++++++++++++++++++++++++++++++++++++++ Package | 5 + source/Module | 4 + source/application.cpp | 171 ++++++++++++++ source/application.h | 82 +++++++ source/error.h | 24 ++ source/event.cpp | 58 +++++ source/event.h | 61 +++++ source/main.cpp | 9 + source/mutex.h | 65 ++++++ source/pollable.cpp | 20 ++ source/pollable.h | 28 +++ source/poller.cpp | 98 ++++++++ source/poller.h | 52 +++++ source/semaphore.h | 30 +++ source/thread.cpp | 28 +++ source/thread.h | 35 +++ 17 files changed, 1280 insertions(+) create mode 100644 License.txt create mode 100644 Package create mode 100644 source/Module create mode 100644 source/application.cpp create mode 100644 source/application.h create mode 100644 source/error.h create mode 100644 source/event.cpp create mode 100644 source/event.h create mode 100644 source/main.cpp create mode 100644 source/mutex.h create mode 100644 source/pollable.cpp create mode 100644 source/pollable.h create mode 100644 source/poller.cpp create mode 100644 source/poller.h create mode 100644 source/semaphore.h create mode 100644 source/thread.cpp create mode 100644 source/thread.h diff --git a/License.txt b/License.txt new file mode 100644 index 0000000..2d2d780 --- /dev/null +++ b/License.txt @@ -0,0 +1,510 @@ + + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations +below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it +becomes a de-facto standard. To achieve this, non-free programs must +be allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control +compilation and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at least + three years, to give the same user the materials specified in + Subsection 6a, above, for a charge no more than the cost of + performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply, and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License +may add an explicit geographical distribution limitation excluding those +countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms +of the ordinary General Public License). + + To apply these terms, attach the following notices to the library. +It is safest to attach them to the start of each source file to most +effectively convey the exclusion of warranty; and each file should +have at least the "copyright" line and a pointer to where the full +notice is found. + + + + Copyright (C) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or +your school, if any, to sign a "copyright disclaimer" for the library, +if necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James + Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/Package b/Package new file mode 100644 index 0000000..70efd84 --- /dev/null +++ b/Package @@ -0,0 +1,5 @@ +package="mspframework" +version="0.1" +description="Mikkosoft Productions application framework library" +requires=("mspmisc","pthread","sigc++-2.0") +tarballfile=("License.txt",) diff --git a/source/Module b/source/Module new file mode 100644 index 0000000..8e1936d --- /dev/null +++ b/source/Module @@ -0,0 +1,4 @@ +type="library" +target="mspframework" +installheaders="framework" +installtarget=1 diff --git a/source/application.cpp b/source/application.cpp new file mode 100644 index 0000000..765b067 --- /dev/null +++ b/source/application.cpp @@ -0,0 +1,171 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include +#include +#include "application.h" +#include "error.h" + +using namespace std; + +namespace Msp { + +Poller::Slot &Application::add_pollable(Pollable *obj, short events) +{ + if(!poller_) + poller_=new Poller; + + Poller::Slot &slot=poller_->add_pollable(obj, events); + // Interrupt a possible poll in progress + pthread_kill(main_tid, SIGALRM); + return slot; +} + +EventManager::Event &Application::create_event() +{ + if(!ev_mgr_) + ev_mgr_=new EventManager(*this); + + return ev_mgr_->create_event(); +} + +Application::~Application() +{ + if(poller_) + delete poller_; + if(ev_mgr_) + delete ev_mgr_; +} + +/** +Constructs an instance of the registered application class and runs it. If the +application throws a UsageError, the static usage() function is called. + +This function can only be called once. The global main() function provided by +the library normally does it automatically at program startup. +*/ +int Application::run(int argc, char **argv) +{ + static bool called=false; + if(called) + { + cerr<<"Trying to call Application::run_app twice!\n"; + return 125; + } + called=true; + + if(!reg_app_) + { + cerr<<"Trying to run with no application class registered!\n"; + return 126; + } + + signal(SIGALRM, &sigalrm_); + + try + { + app_=reg_app_->create_app(argc, argv); + } + catch(const UsageError &e) + { + reg_app_->usage(argv[0], e.get_brief()); + return 1; + } + + int result=app_->main(); + delete app_; + return result; +} + +/** +Prints a message describing the usage of the application. The default version +will blame the programmer for being lazy. + +@param argv0 The value of argv[0], to be used in the message +@param brief Whether to print a brief or long usage message +*/ +void Application::usage(const char *, bool) +{ + cerr<<"The programmer was lazy and didn't write a usage() function for this application.\n"; +} + +/** +Default main loop. Calls tick() periodically if do_ticks is true, otherwise +just sleeps. A custom main loop should monitor the done member variable and +return exit_code. +*/ +int Application::main() +{ + done=false; + while(!done) + { + if(tick_mode_==IDLE) + { + if(poller_) + poller_->poll(0); + tick(); + sched_yield(); + } + else + { + if(poller_) + poller_->poll(-1); + else + { + timespec ts={1000,0}; + nanosleep(&ts, 0); + } + if(tick_mode_!=NONE) + tick(); + } + } + + return exit_code; +} + +/** +Sets the specified signal to be delivered to the sighandler member function. +*/ +void Application::catch_signal(int s) +{ + signal(s, &sighandler_); +} + +void Application::set_tick_mode(TickMode t) +{ + tick_mode_=t; + pthread_kill(main_tid, SIGALRM); +} + +/** +Causes the application to exit gracefully with the given exit code. +*/ +void Application::exit(int c) +{ + done=true; + exit_code=c; + pthread_kill(main_tid, SIGALRM); +} + +void Application::sighandler_(int s) +{ + app_->sighandler(s); +} + +Application::RegBase::RegBase() +{ + if(reg_app_) + { + cerr<<"Warning: registering the application twice\n"; + delete reg_app_; + } + + reg_app_=this; +} + +Application *Application::app_=0; +Application::RegBase *Application::reg_app_=0; + +} // namespace Msp diff --git a/source/application.h b/source/application.h new file mode 100644 index 0000000..4296b6f --- /dev/null +++ b/source/application.h @@ -0,0 +1,82 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_APPLICATION_H_ +#define MSP_FRAMEWORK_APPLICATION_H_ + +#include +#include "event.h" +#include "poller.h" + +namespace Msp { + +/** +Base class for applications. Inherit the main class from this and add a static +member of type RegApp. +*/ +class Application +{ +public: + Poller::Slot &add_pollable(Pollable *, short); + EventManager::Event &create_event(); + virtual ~Application(); + + static int run(int, char **); + static void usage(const char *, bool); +protected: + enum TickMode + { + NONE, /// No ticks + AFTER_POLL, /// One tick after each poll + IDLE /// Constant torrent of ticks + }; + + class RegBase + { + public: + virtual Application *create_app(int, char **)=0; + virtual void usage(const char *, bool)=0; + virtual ~RegBase() { } + protected: + RegBase(); + }; + + template + class RegApp: public RegBase + { + public: + Application *create_app(int argc, char **argv) { return new T(argc, argv); } + void usage(const char *a, bool b) { T::usage(a,b); } + }; + + bool done; + int exit_code; + + Application(): exit_code(0), tick_mode_(IDLE), poller_(0), ev_mgr_(0), main_tid(pthread_self()) { } + virtual int main(); + void catch_signal(int); + void set_tick_mode(TickMode); + void exit(int); + virtual void tick() { } + virtual void sighandler(int) { } +private: + TickMode tick_mode_; + Poller *poller_; + EventManager *ev_mgr_; + pthread_t main_tid; + + Application(const Application &); + Application &operator=(const Application &); + + static RegBase *reg_app_; + static Application *app_; + + static void sighandler_(int); + static void sigalrm_(int) { } +}; + +} // namespace Msp + +#endif diff --git a/source/error.h b/source/error.h new file mode 100644 index 0000000..c311bcd --- /dev/null +++ b/source/error.h @@ -0,0 +1,24 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_ERRORS_H_ +#define MSP_FRAMEWORK_ERRORS_H_ + +#include + +namespace Msp { + +class UsageError: public Msp::Exception +{ +public: + UsageError(bool b=true): Exception(""), brief(b) { } + bool get_brief() const { return brief; } +private: + bool brief; +}; + +} // namespace Msp + +#endif diff --git a/source/event.cpp b/source/event.cpp new file mode 100644 index 0000000..b314fca --- /dev/null +++ b/source/event.cpp @@ -0,0 +1,58 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include "application.h" +#include "event.h" + +using namespace std; + +namespace Msp { + +EventManager::EventManager(Application &a): + app(a), + next_id(1) +{ + app.add_pollable(&pipe, POLLIN).signal_event.connect(sigc::mem_fun(this, &EventManager::data_available)); +} + +EventManager::Event &EventManager::create_event() +{ + events.push_back(Event(*this, next_id++)); + return events.back(); +} + +void EventManager::data_available(short) +{ + unsigned buf[1024]; + int len=pipe.read((char *)buf, sizeof(buf)); + for(unsigned i=0; i*sizeof(unsigned)<(unsigned)len; ++i) + { + for(list::iterator j=events.begin(); j!=events.end(); ++j) + if(j->get_id()==buf[i]) + j->signal_triggered.emit(); + } +} + +void EventManager::Event::trigger() +{ + mgr.pipe.write((char *)&id, sizeof(id)); +} + +EventManager::Pipe::Pipe() +{ + ::pipe(fd); +} + +int EventManager::Pipe::write(char *buf, unsigned len) +{ + return ::write(fd[1], buf, len); +} + +int EventManager::Pipe::read(char *buf, unsigned len) +{ + return ::read(fd[0], buf, len); +} + +} // namespace Msp diff --git a/source/event.h b/source/event.h new file mode 100644 index 0000000..091d637 --- /dev/null +++ b/source/event.h @@ -0,0 +1,61 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_EVENT_H_ +#define MSP_FRAMEWORK_EVENT_H_ + +#include +#include "pollable.h" + +namespace Msp { + +class Application; + +/** +Events can be used in multi-threaded applictions to trigger actions in the main +thread. +*/ +class EventManager +{ +public: + class Event + { + public: + sigc::signal signal_triggered; + + Event(EventManager &m, unsigned i): mgr(m), id(i) { } + unsigned get_id() const { return id; } + void trigger(); + private: + EventManager &mgr; + unsigned id; + }; + + EventManager(Application &); + Event &create_event(); +private: + class Pipe: public Pollable + { + public: + Pipe(); + int write(char *, unsigned); + int read(char *, unsigned); + private: + int fd[2]; + + int get_fd() { return fd[0]; } + }; + + Application &app; + Pipe pipe; + unsigned next_id; + std::list events; + + void data_available(short); +}; + +} // namespace Msp + +#endif diff --git a/source/main.cpp b/source/main.cpp new file mode 100644 index 0000000..7b1b11e --- /dev/null +++ b/source/main.cpp @@ -0,0 +1,9 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include "application.h" + +int main(int argc, char **argv) +{ return Msp::Application::run(argc, argv); } diff --git a/source/mutex.h b/source/mutex.h new file mode 100644 index 0000000..0c2879e --- /dev/null +++ b/source/mutex.h @@ -0,0 +1,65 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_MUTEX_H_ +#define MSP_FRAMEWORK_MUTEX_H_ + +#include +#include + +namespace Msp { + +class Mutex +{ +public: + Mutex() { pthread_mutex_init(&mutex, 0); } + int lock() { return pthread_mutex_lock(&mutex); } + int trylock() { return pthread_mutex_trylock(&mutex); } + int unlock() { return pthread_mutex_unlock(&mutex); } + ~Mutex() { pthread_mutex_destroy(&mutex); } +private: + pthread_mutex_t mutex; + + friend class Semaphore; +}; + +class MutexLock +{ +public: + MutexLock(Mutex &m): mutex(m) { mutex.lock(); } + ~MutexLock() { mutex.unlock(); } +private: + Mutex &mutex; +}; + + +template +class MutexPtr: public RefCount +{ +public: + MutexPtr(T *d, Mutex &m): mutex(m), data(d) { mutex.lock(); } + MutexPtr(const MutexPtr &p): RefCount(p), mutex(p.mutex), data(p.data) { } + T &operator*() const { return *data; } + T *operator->() const { return data; } + void clear() { decref(); data=0; } + ~MutexPtr() { decref(); } +protected: + Mutex &mutex; + T *data; + + bool decref() + { + if(!RefCount::decref()) + { + mutex.unlock(); + return false; + } + return true; + } +}; + +} + +#endif diff --git a/source/pollable.cpp b/source/pollable.cpp new file mode 100644 index 0000000..805521d --- /dev/null +++ b/source/pollable.cpp @@ -0,0 +1,20 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include +#include "pollable.h" + +namespace Msp { + +short Pollable::poll(short events, int timeout) +{ + pollfd pfd={get_fd(), events, 0}; + int result=::poll(&pfd, 1, timeout); + if(result<=0) + return result; + return pfd.revents; +} + +} diff --git a/source/pollable.h b/source/pollable.h new file mode 100644 index 0000000..46cfb23 --- /dev/null +++ b/source/pollable.h @@ -0,0 +1,28 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_POLLABLE_H_ +#define MSP_FRAMEWORK_POLLABLE_H_ + +#include + +namespace Msp { + +class Pollable +{ +public: + sigc::signal signal_deleted; + + virtual short poll(short, int =0); + virtual ~Pollable() { signal_deleted.emit(); } +protected: + virtual int get_fd()=0; + + friend class Poller; +}; + +} + +#endif diff --git a/source/poller.cpp b/source/poller.cpp new file mode 100644 index 0000000..0919366 --- /dev/null +++ b/source/poller.cpp @@ -0,0 +1,98 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include "pollable.h" +#include "poller.h" + +using namespace std; + +namespace Msp { + +Poller::Slot &Poller::add_pollable(Pollable *obj, short events) +{ + MutexLock sl(slots_mutex); + + slots.push_back(new Slot(obj, events)); + if(!pfd_mutex.trylock()) + { + rebuild_pfd(); + pfd_mutex.unlock(); + } + else + dirty=true; + return *slots.back(); +} + +int Poller::poll(int timeout) +{ + slots_mutex.lock(); + for(list::iterator i=slots.begin(); i!=slots.end();) + { + if((*i)->get_object()) + ++i; + else + { + delete *i; + i=slots.erase(i); + dirty=true; + } + } + + pfd_mutex.lock(); + if(dirty) + { + rebuild_pfd(); + dirty=false; + } + slots_mutex.unlock(); + + int result=::poll(&pfd[0], pfd.size(), timeout); + + if(result>0) + { + list::iterator j=slots.begin(); + for(vector::iterator i=pfd.begin(); i!=pfd.end(); ++i) + { + if(i->revents&POLLNVAL) + dirty=true; + else if(i->revents) + { + while(j!=slots.end() && (!(*j)->get_object() || (*j)->get_object()->get_fd()!=i->fd)) + ++j; + if(j==slots.end()) + break; + (*j)->signal_event.emit(i->revents); + } + } + } + + pfd_mutex.unlock(); + + return result; +} + +void Poller::rebuild_pfd() +{ + pfd.clear(); + pfd.reserve(slots.size()); + for(list::iterator i=slots.begin(); i!=slots.end(); ++i) + { + if(!(*i)->get_object() || (*i)->get_object()->get_fd()<0) + continue; + + pfd.push_back(pollfd()); + pfd.back().fd=(*i)->get_object()->get_fd(); + pfd.back().events=(*i)->get_events(); + } +} + +Poller::Slot::Slot(Pollable *o, short e): + obj(o), + events(e) +{ + obj->signal_deleted.connect(sigc::mem_fun(this, &Slot::obj_deleted)); +} + +} // namespace Msp diff --git a/source/poller.h b/source/poller.h new file mode 100644 index 0000000..b299b75 --- /dev/null +++ b/source/poller.h @@ -0,0 +1,52 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_POLLER_H_ +#define MSP_FRAMEWORK_POLLER_H_ + +#include +#include +#include +#include "mutex.h" + +namespace Msp { + +class Pollable; + +class Poller +{ +public: + class Slot + { + public: + sigc::signal signal_event; + + Slot(Pollable *, short); + Pollable *get_object() const { return obj; } + short get_events() const { return events; } + private: + Pollable *obj; + short events; + + void obj_deleted() { obj=0; } + }; + + Slot &add_pollable(Pollable *, short); + int poll(int =0); +private: + std::list slots; + std::vector pfd; + Mutex slots_mutex; + Mutex pfd_mutex; + bool dirty; + + void remove_stale_slots(); + void rebuild_pfd(); + void pollable_deleted(Pollable *); +}; + +}; + +#endif diff --git a/source/semaphore.h b/source/semaphore.h new file mode 100644 index 0000000..36e9690 --- /dev/null +++ b/source/semaphore.h @@ -0,0 +1,30 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_SEMAPHORE_H_ +#define MSP_FRAMEWORK_SEMAPHORE_H_ + +#include +#include "mutex.h" + +namespace Msp { + +class Semaphore +{ +public: + Semaphore() { pthread_cond_init(&cond, 0); } + Mutex &get_mutex() { return mutex; } + int signal() { return pthread_cond_signal(&cond); } + int broadcast() { return pthread_cond_broadcast(&cond); } + int wait() { return pthread_cond_wait(&cond, &mutex.mutex); } + ~Semaphore() { pthread_cond_destroy(&cond); } +private: + Mutex mutex; + pthread_cond_t cond; +}; + +} + +#endif diff --git a/source/thread.cpp b/source/thread.cpp new file mode 100644 index 0000000..3846573 --- /dev/null +++ b/source/thread.cpp @@ -0,0 +1,28 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#include +#include "thread.h" + +namespace Msp { + +void *Thread::join() +{ + if(!thread_) + return 0; + + void *result; + pthread_join(thread_, &result); + thread_=0; + return result; +} + +Thread::~Thread() +{ + if(thread_) + kill(SIGKILL); +} + +} // namespace Msp diff --git a/source/thread.h b/source/thread.h new file mode 100644 index 0000000..a115853 --- /dev/null +++ b/source/thread.h @@ -0,0 +1,35 @@ +/* +This file is part of libmspframework +Copyright © 2006 Mikko Rasa, Mikkosoft Productions +Distributed under the LGPL +*/ +#ifndef MSP_FRAMEWORK_THREAD_H_ +#define MSP_FRAMEWORK_THREAD_H_ + +#include + +namespace Msp { + +class Thread +{ +public: + void *join(); + void kill(int s) { pthread_kill(thread_, s); } + virtual ~Thread(); +protected: + Thread() { } + void launch() { pthread_create(&thread_, 0, &main_, this); } + virtual void *main()=0; + void exit(void *r) { pthread_exit(r); } +private: + pthread_t thread_; + + Thread(const Thread &); + Thread &operator=(const Thread &); + + static void *main_(void *t) { return ((Thread *)t)->main(); } +}; + +} // namespace Msp + +#endif -- 2.45.2