Annotation of parser3/src/include/pa_memory.h, revision 1.1.2.9.2.13
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:
1.1.2.9.2.13! paf 12: static const char* IDENT_MEMORY_H="$Date: 2003/03/25 09:34:53 $";
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:
1.1.2.9.2.5 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"
1.1.2.9.2.5 paf 48: inline char *pa_strdup(const char* auto_variable_never_null, size_t length=0) {
1.1.2.9.2.4 paf 49: if(!length)
50: length=strlen(auto_variable_never_null);
1.1.2.9.2.7 paf 51:
52: size_t size=length+1;
1.1.2.9.2.4 paf 53: if(char *result=static_cast<char*>(GC_MALLOC_ATOMIC(size))) {
1.1.2.9.2.7 paf 54: memcpy(result, auto_variable_never_null, length);
55: result[length]=0;
1.1.2.9.2.4 paf 56: return result;
57: }
58:
59: return static_cast<char*>(pa_fail_alloc("allocate clean", size));
60: }
1.1.2.9.2.10 paf 61:
1.1.2.2 paf 62: inline void pa_free(void *ptr) {
1.1.2.9.2.1 paf 63: GC_FREE(ptr);
1.1.2.2 paf 64: }
65:
66: inline void *pa_realloc(void *ptr, size_t size) {
1.1.2.9.2.1 paf 67: if(void *result=GC_REALLOC(ptr, size))
1.1.2.2 paf 68: return result;
69:
70: return pa_fail_alloc("reallocate to", size);
71: }
1.1.2.1 paf 72:
1.1.2.9.2.4 paf 73: //{@ these operators are disabled, one should explicitely specify either new(UseGC) or new(PointerFreeGC)
1.1.2.9.2.6 paf 74: inline void *operator new(size_t size) { abort(); } // disabled
75: inline void operator delete (void *ptr) { abort(); } // disabled
76: inline void *operator new[] (size_t size) { abort(); } // disabled
1.1.2.9.2.4 paf 77: //}@
1.1.2.9.2.3 paf 78:
79: #define UseGC ((int)1)
80: #define PointerFreeGC (true)
81:
82: inline void *operator new[] (size_t size, int) { // UseGC
83: return pa_malloc(size);
84: }
85: inline void *operator new[] (size_t size, bool) { // PointerFreeGC
1.1.2.9.2.1 paf 86: return pa_malloc_atomic(size);
1.1.2.1 paf 87: }
88: inline void operator delete[] (void *ptr) {
89: pa_free(ptr);
90: }
91:
1.1.2.9.2.1 paf 92: /// memory allocation/dallocation goes via pa_malloc/pa_free.
1.1.2.1 paf 93: class PA_Allocated {
94: public:
95: /// the sole: instances allocated using our functions
96: static void *operator new(size_t size) {
97: return pa_malloc(size);
98: }
99: static void operator delete(void *ptr) {
100: pa_free(ptr);
101: }
102: static void *malloc(size_t size) {
103: return pa_malloc(size);
104: }
1.1.2.9.2.1 paf 105: static void *malloc_atomic(size_t size) {
106: return pa_malloc_atomic(size);
1.1.2.9.2.8 paf 107: }
108: static char *strdup(const char* auto_variable_never_null, size_t length=0) {
109: return pa_strdup(auto_variable_never_null, length);
1.1.2.1 paf 110: }
111: static void free(void *ptr) {
112: pa_free(ptr);
113: }
114: static void *realloc(void *ptr, size_t size) {
115: return pa_realloc(ptr, size);
116: }
1.1.2.9.2.2 paf 117:
118: private: // disabled from accidental use
119:
1.1.2.9.2.9 paf 120: /// use malloc/malloc_atomic instead [GC clears result of those]
1.1.2.9.2.2 paf 121: static void *calloc(size_t size);
1.1.2.9.2.13! paf 122:
! 123: };
! 124:
! 125: /// Those who want their destructor called during finalization, must derive from this class [also]
! 126: class PA_Cleaned {
! 127:
! 128: static void cleanup( void* obj, void* displ ) {
! 129: ((PA_Cleaned*) ((char*) obj + (ptrdiff_t) displ))->~PA_Cleaned();
! 130: }
! 131:
! 132: public:
! 133:
! 134: PA_Cleaned() {
! 135: GC_finalization_proc oldProc;
! 136: void* oldData;
! 137: void* base = GC_base( (void *) this );
! 138: if (0 != base) {
! 139: // Don't call the debug version, since this is a real base address.
! 140: GC_register_finalizer_ignore_self(
! 141: base, (GC_finalization_proc)cleanup, (void*) ((char*) this - (char*) base),
! 142: &oldProc, &oldData );
! 143: if (0 != oldProc) {
! 144: GC_register_finalizer_ignore_self( base, oldProc, oldData, 0, 0 );
! 145: }
! 146: }
! 147: }
! 148:
! 149: virtual ~PA_Cleaned() {
! 150: GC_REGISTER_FINALIZER_IGNORE_SELF( GC_base(this), 0, 0, 0, 0 );
! 151: }
1.1.2.1 paf 152:
153: };
154:
1.1.2.9.2.1 paf 155: /// Base for all Parser classes
156: typedef PA_Allocated PA_Object;
1.1.2.1 paf 157:
1.1.2.9.2.6 paf 158: // defines
159:
160: #define override
161: #define rethrow throw
1.1.2.9.2.10 paf 162:
1.1.2.1 paf 163:
164: #endif
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