GNU CommonC++
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00001 // Copyright (C) 1999-2005 Open Source Telecom Corporation. 00002 // 00003 // This program is free software; you can redistribute it and/or modify 00004 // it under the terms of the GNU General Public License as published by 00005 // the Free Software Foundation; either version 2 of the License, or 00006 // (at your option) any later version. 00007 // 00008 // This program is distributed in the hope that it will be useful, 00009 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00010 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00011 // GNU General Public License for more details. 00012 // 00013 // You should have received a copy of the GNU General Public License 00014 // along with this program; if not, write to the Free Software 00015 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00016 // 00017 // As a special exception, you may use this file as part of a free software 00018 // library without restriction. Specifically, if other files instantiate 00019 // templates or use macros or inline functions from this file, or you compile 00020 // this file and link it with other files to produce an executable, this 00021 // file does not by itself cause the resulting executable to be covered by 00022 // the GNU General Public License. This exception does not however 00023 // invalidate any other reasons why the executable file might be covered by 00024 // the GNU General Public License. 00025 // 00026 // This exception applies only to the code released under the name GNU 00027 // Common C++. If you copy code from other releases into a copy of GNU 00028 // Common C++, as the General Public License permits, the exception does 00029 // not apply to the code that you add in this way. To avoid misleading 00030 // anyone as to the status of such modified files, you must delete 00031 // this exception notice from them. 00032 // 00033 // If you write modifications of your own for GNU Common C++, it is your choice 00034 // whether to permit this exception to apply to your modifications. 00035 // If you do not wish that, delete this exception notice. 00036 // 00037 00044 #ifndef CCXX_MISC_H_ 00045 #define CCXX_MISC_H_ 00046 00047 #ifndef CCXX_MISSING_H_ 00048 #include <cc++/missing.h> 00049 #endif 00050 00051 #ifndef CCXX_THREAD_H_ 00052 #include <cc++/thread.h> 00053 #endif 00054 00055 #define KEYDATA_INDEX_SIZE 97 00056 #define KEYDATA_PAGER_SIZE 512 00057 00058 #if defined(PATH_MAX) 00059 #if PATH_MAX > 512 00060 #define KEYDATA_PATH_SIZE 512 00061 #else 00062 #define KEYDATA_PATH_SIZE PATH_MAX 00063 #endif 00064 #else 00065 #define KEYDATA_PATH_SIZE 256 00066 #endif 00067 00068 #ifdef CCXX_NAMESPACES 00069 namespace ost { 00070 #endif 00071 00072 class __EXPORT Runlist; 00073 class __EXPORT Runable; 00074 00090 class __EXPORT MemPager 00091 { 00092 private: 00093 friend class String; 00094 friend class MemPagerObject; 00095 00096 size_t pagesize; 00097 unsigned int pages; 00098 00099 struct _page { 00100 struct _page *next; 00101 size_t used; 00102 } *page; 00103 00104 protected: 00114 virtual void* first(size_t size); 00115 00123 virtual void* alloc(size_t size); 00124 00134 char* first(char *str); 00135 00145 char* alloc(const char *str); 00146 00156 MemPager(size_t pagesize = 4096); 00157 00161 void purge(void); 00162 00166 void clean(void); 00167 00171 virtual ~MemPager(); 00172 00173 public: 00180 inline int getPages(void) 00181 {return pages;}; 00182 }; 00183 00193 class __EXPORT StackPager : protected MemPager 00194 { 00195 private: 00196 typedef struct frame { 00197 struct frame *next; 00198 char data[1]; 00199 } frame_t; 00200 00201 frame_t *stack; 00202 00203 public: 00209 StackPager(size_t pagesize); 00210 00218 void *push(const void *object, size_t size); 00219 00226 void *push(const char *string); 00227 00233 void *pull(void); 00234 00238 void purge(void); 00239 }; 00240 00249 class __EXPORT SharedMemPager : public MemPager, public Mutex 00250 { 00251 protected: 00258 SharedMemPager(size_t pagesize = 4096, const char *name = NULL); 00259 00263 void purge(void); 00264 00271 void* first(size_t size); 00272 00279 void* alloc(size_t size); 00280 }; 00281 00282 __EXPORT void endKeydata(void); 00283 00351 class __EXPORT Keydata : protected MemPager 00352 { 00353 public: 00354 #ifdef CCXX_PACKED 00355 #pragma pack(1) 00356 #endif 00357 00358 struct Keyval { 00359 Keyval *next; 00360 char val[1]; 00361 }; 00362 00363 struct Keysym { 00364 Keysym *next; 00365 Keyval *data; 00366 const char **list; 00367 short count; 00368 char sym[1]; 00369 }; 00370 00371 struct Define { 00372 char *keyword; 00373 char *value; 00374 }; 00375 00376 #ifdef CCXX_PACKED 00377 #pragma pack() 00378 #endif 00379 00380 private: 00381 static std::ifstream *cfgFile; 00382 static char lastpath[KEYDATA_PATH_SIZE + 1]; 00383 static int count; 00384 static int sequence; 00385 00386 int link; 00387 00388 Keysym *keys[KEYDATA_INDEX_SIZE]; 00389 00396 unsigned getIndex(const char *sym); 00397 00398 protected: 00399 Keysym* getSymbol(const char *sym, bool create); 00400 00401 public: 00413 void load(const char *keypath); 00414 00428 void loadPrefix(const char *prefix, const char *keypath); 00429 00439 void loadFile(const char *filepath, const char *keys = NULL, const char *pre = NULL); 00440 00449 void load(Define *pairs); 00450 00454 Keydata(); 00455 00463 Keydata(const char *keypath); 00464 00472 Keydata(Define *pairs, const char *keypath = NULL); 00473 00479 virtual ~Keydata(); 00480 00488 void unlink(void); 00489 00498 int getCount(const char *sym); 00499 00507 const char* getFirst(const char *sym); 00508 00516 const char* getLast(const char *sym); 00517 00524 bool isKey(const char *sym); 00525 00533 const char *getString(const char *sym, const char *def = NULL); 00534 00542 long getLong(const char *sym, long def = 0); 00543 00550 bool getBool(const char *key); 00551 00559 double getDouble(const char *key, double def = 0.); 00560 00569 unsigned getIndex(char **data, unsigned max); 00570 00577 unsigned getCount(void); 00578 00587 void setValue(const char *sym, const char *data); 00588 00596 const char * const* getList(const char *sym); 00597 00604 void clrValue(const char *sym); 00605 00610 inline const char *operator[](const char *keyword) 00611 {return getLast(keyword);}; 00612 00616 static void end(void); 00617 00622 friend inline void endKeydata(void) 00623 {Keydata::end();}; 00624 }; 00625 00633 class __EXPORT MemPagerObject 00634 { 00635 public: 00642 inline void *operator new(size_t size, MemPager &pager) 00643 {return pager.alloc(size);}; 00644 00651 inline void *operator new[](size_t size, MemPager &pager) 00652 {return pager.alloc(size);}; 00653 00657 inline void operator delete(void *) {}; 00658 00662 inline void operator delete[](void *) {}; 00663 }; 00664 00673 class __EXPORT Assoc 00674 { 00675 private: 00676 struct entry { 00677 const char *id; 00678 entry *next; 00679 void *data; 00680 }; 00681 00682 entry *entries[KEYDATA_INDEX_SIZE]; 00683 00684 protected: 00685 Assoc(); 00686 virtual ~Assoc(); 00687 00688 void clear(void); 00689 00690 virtual void *getMemory(size_t size) = 0; 00691 00692 public: 00693 void *getPointer(const char *id) const; 00694 void setPointer(const char *id, void *data); 00695 }; 00696 00707 class __EXPORT Runlist : public Mutex 00708 { 00709 private: 00710 Runable *first, *last; 00711 00712 protected: 00713 unsigned limit, used; 00714 void check(void); 00715 00716 public: 00722 Runlist(unsigned count = 1); 00723 00732 bool add(Runable *run); 00733 00740 void del(Runable *run); 00741 00747 void set(unsigned limit); 00748 }; 00749 00756 class __EXPORT Runable 00757 { 00758 private: 00759 friend class Runlist; 00760 Runlist *list; 00761 Runable *next, *prev; 00762 00763 protected: 00764 Runable(); 00765 virtual ~Runable(); 00766 00771 virtual void ready(void) = 0; 00772 00773 public: 00780 bool starting(Runlist *list); 00781 00787 void stoping(void); 00788 }; 00789 00790 #ifdef CCXX_NAMESPACES 00791 } 00792 #endif 00793 00794 #endif 00795