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Annotation of parser3/src/include/pa_memory.h, revision 1.1.2.9.2.4

1.1.2.1   paf         1: /** @file
                      2:        Parser: memory reference counting classes decls.
                      3: 
                      4:        Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
                      5: 
                      6:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
                      7: */
                      8: 
                      9: #ifndef PA_MEMORY_H
                     10: #define PA_MEMORY_H
                     11: 
1.1.2.9.2.4! paf        12: static const char* IDENT_MEMORY_H="$Date: 2003/03/19 16:28:08 $";
1.1.2.9   paf        13: 
                     14: #define PA_DEBUG_REFERENCES
1.1.2.1   paf        15: 
                     16: // include
                     17: 
                     18: #include "pa_config_includes.h"
1.1.2.9.2.1  paf        19: #include "gc.h"
                     20: 
1.1.2.1   paf        21: 
                     22: #ifdef XML
                     23: #      include "gdome.h"
                     24: // for xmlChar
                     25: #      include "libxml/tree.h"
                     26: #endif
                     27: 
                     28: // forwards
                     29: 
1.1.2.9.2.1  paf        30: void *pa_fail_alloc(const char *what, size_t size);
1.1.2.2   paf        31: 
                     32: // inlines
                     33: 
                     34: inline void *pa_malloc(size_t size) {
1.1.2.9.2.1  paf        35:        if(void *result=GC_MALLOC(size))
1.1.2.2   paf        36:                return result;
                     37: 
                     38:        return pa_fail_alloc("allocate", size);
                     39: }
                     40: 
1.1.2.9.2.1  paf        41: inline void *pa_malloc_atomic(size_t size) {
                     42:        if(void *result=GC_MALLOC_ATOMIC(size))
1.1.2.2   paf        43:                return result;
                     44: 
                     45:        return pa_fail_alloc("allocate clean", size);
                     46: }
1.1.2.9.2.4! paf        47: /// @a length may be null, which mean "autocalc it"
        !            48: inline char *pa_strdup(const char *auto_variable_never_null, size_t length=0) {
        !            49:        if(!length)
        !            50:                length=strlen(auto_variable_never_null);
        !            51:        size_t size=length+1; // terminating zero
        !            52:        if(char *result=static_cast<char*>(GC_MALLOC_ATOMIC(size))) {
        !            53:                memcpy(result, auto_variable_never_null, size);
        !            54:                return result;
        !            55:        }
        !            56: 
        !            57:        return static_cast<char*>(pa_fail_alloc("allocate clean", size));
        !            58: }
1.1.2.2   paf        59: inline void pa_free(void *ptr) {
1.1.2.9.2.1  paf        60:        GC_FREE(ptr);
1.1.2.2   paf        61: }
                     62: 
                     63: inline void *pa_realloc(void *ptr, size_t size) {
1.1.2.9.2.1  paf        64:        if(void *result=GC_REALLOC(ptr, size))
1.1.2.2   paf        65:                return result;
                     66: 
                     67:        return pa_fail_alloc("reallocate to", size);
                     68: }
1.1.2.1   paf        69: 
                     70: #define DECLARE_OBJECT_PTR(name) \
1.1.2.9.2.1  paf        71:        typedef name* name##Ptr
1.1.2.6   paf        72: 
                     73: #define DECLARE_SMART_PTR(name) \
1.1.2.9.2.1  paf        74:        typedef name* name##Ptr
1.1.2.1   paf        75: 
                     76: // defines
                     77: 
                     78: #define override
                     79: #define rethrow throw
                     80: 
                     81: // memory
                     82: 
1.1.2.9.2.4! paf        83: //{@ these operators are disabled, one should explicitely specify either new(UseGC) or new(PointerFreeGC)
1.1.2.9.2.3  paf        84: void *operator new(size_t size); // disabled, should cause link error!
                     85: void operator delete (void *ptr); // disabled, should cause link error!
                     86: void *operator new[] (size_t size); // disabled, should cause link error!
1.1.2.9.2.4! paf        87: //}@
1.1.2.9.2.3  paf        88: 
                     89: #define UseGC ((int)1)
                     90: #define PointerFreeGC (true)
                     91: 
                     92: inline void *operator new[] (size_t size, int) { // UseGC
                     93:        return pa_malloc(size);
                     94: }
                     95: inline void *operator new[] (size_t size, bool) { // PointerFreeGC
1.1.2.9.2.1  paf        96:        return pa_malloc_atomic(size);
1.1.2.1   paf        97: }
                     98: inline void operator delete[] (void *ptr) {
                     99:        pa_free(ptr);
                    100: }
                    101: 
1.1.2.9.2.1  paf       102: /// memory allocation/dallocation goes via pa_malloc/pa_free.
1.1.2.1   paf       103: class PA_Allocated {
                    104: public:
                    105:        /// the sole: instances allocated using our functions
                    106:        static void *operator new(size_t size) { 
                    107:                return pa_malloc(size);
                    108:        }
                    109:        static void operator delete(void *ptr) {
                    110:                pa_free(ptr);
                    111:        }
                    112:        static void *malloc(size_t size) {
                    113:                return pa_malloc(size);
                    114:        }
1.1.2.9.2.1  paf       115:        static void *malloc_atomic(size_t size) {
                    116:                return pa_malloc_atomic(size);
1.1.2.1   paf       117:        }
                    118:        static void free(void *ptr) {
                    119:                pa_free(ptr);
                    120:        }
                    121:        static void *realloc(void *ptr, size_t size) {
                    122:                return pa_realloc(ptr, size);
                    123:        }
1.1.2.9.2.2  paf       124: 
                    125: private: // disabled from accidental use
                    126: 
                    127:        /// use malloc instead [GC clears malloc result]
                    128:        static void *calloc(size_t size);
1.1.2.1   paf       129: 
                    130: };
                    131: 
1.1.2.9.2.1  paf       132: /// Base for all Parser classes
                    133: typedef PA_Allocated PA_Object;
1.1.2.1   paf       134: 
                    135: // convinient types
                    136: 
                    137: #endif