gwj / po_oopc · Commits

Commit 2c9501c4a98b60f0cdf7b37415db544b2f8555b2

Authored by Grzegorz Jabłoński
1 parent 36081a4f

Removed buggy operator=(char*) from string.

Inline Side-by-side
Showing 27 changed files with 2 additions and 1359 deletions
examples04/04-rcstring/rcstring.h
  View file @2c9501c
@@ -15,7 +15,6 @@ rcstring(); @@ -15,7 +15,6 @@ rcstring();
15 rcstring(const char*); 15 rcstring(const char*);
16 rcstring(const rcstring&); 16 rcstring(const rcstring&);
17 ~rcstring(); 17 ~rcstring();
18 -rcstring& operator=(const char*);  
19 rcstring& operator=(const rcstring&); 18 rcstring& operator=(const rcstring&);
20 rcstring& operator+=(const rcstring &); 19 rcstring& operator+=(const rcstring &);
21 rcstring operator+(const rcstring &) const; 20 rcstring operator+(const rcstring &) const;
@@ -54,20 +53,6 @@ struct rcstring::rctext @@ -54,20 +53,6 @@ struct rcstring::rctext
54 n--; 53 n--;
55 return t; 54 return t;
56 }; 55 };
57 - void assign(unsigned int nsize, const char *p)  
58 - {  
59 - if(size!=nsize)  
60 - {  
61 - char* ns=new char[nsize+1];  
62 - size = nsize;  
63 - strncpy(ns,p,size);  
64 - delete [] s;  
65 - s = ns;  
66 - }  
67 - else  
68 - strncpy(s,p,size);  
69 - s[size]='\0';  
70 - }  
71 private: 56 private:
72 rctext(const rctext&); 57 rctext(const rctext&);
73 rctext& operator=(const rctext&); 58 rctext& operator=(const rctext&);
@@ -103,19 +88,6 @@ rcstring::rcstring(const char* s) @@ -103,19 +88,6 @@ rcstring::rcstring(const char* s)
103 data=new rctext(strlen(s),s); 88 data=new rctext(strlen(s),s);
104 } 89 }
105 90
106 -rcstring& rcstring::operator=(const char* s)  
107 -{  
108 - if(data->n==1)  
109 - data->assign(strlen(s),s);  
110 - else  
111 - {  
112 - rctext* t = new rctext(strlen(s),s);  
113 - data->n--;  
114 - data= t;  
115 - };  
116 - return *this;  
117 -}  
118 -  
119 ostream& operator << (ostream& o, const rcstring& s) 91 ostream& operator << (ostream& o, const rcstring& s)
120 { 92 {
121 return o<<s.data->s; 93 return o<<s.data->s;
examples04/05-rcstring/rcstring.h
  View file @2c9501c
@@ -16,7 +16,6 @@ rcstring(); @@ -16,7 +16,6 @@ rcstring();
16 rcstring(const char*); 16 rcstring(const char*);
17 rcstring(const rcstring&); 17 rcstring(const rcstring&);
18 ~rcstring(); 18 ~rcstring();
19 -rcstring& operator=(const char*);  
20 rcstring& operator=(const rcstring&); 19 rcstring& operator=(const rcstring&);
21 rcstring& operator+=(const rcstring &); 20 rcstring& operator+=(const rcstring &);
22 rcstring operator+(const rcstring &) const; 21 rcstring operator+(const rcstring &) const;
@@ -54,20 +53,6 @@ struct rcstring::rctext @@ -54,20 +53,6 @@ struct rcstring::rctext
54 n--; 53 n--;
55 return t; 54 return t;
56 }; 55 };
57 - void assign(unsigned int nsize, const char *p)  
58 - {  
59 - if(size!=nsize)  
60 - {  
61 - char* ns=new char[nsize+1];  
62 - size = nsize;  
63 - strncpy(ns,p,size);  
64 - delete [] s;  
65 - s = ns;  
66 - }  
67 - else  
68 - strncpy(s,p,size);  
69 - s[size]='\0';  
70 - }  
71 private: 56 private:
72 rctext(const rctext&); 57 rctext(const rctext&);
73 rctext& operator=(const rctext&); 58 rctext& operator=(const rctext&);
@@ -126,19 +111,6 @@ rcstring::rcstring(const char* s) @@ -126,19 +111,6 @@ rcstring::rcstring(const char* s)
126 data=new rctext(strlen(s),s); 111 data=new rctext(strlen(s),s);
127 } 112 }
128 113
129 -rcstring& rcstring::operator=(const char* s)  
130 -{  
131 - if(data->n==1)  
132 - data->assign(strlen(s),s);  
133 - else  
134 - {  
135 - rctext* t = new rctext(strlen(s),s);  
136 - data->n--;  
137 - data= t;  
138 - };  
139 - return *this;  
140 -}  
141 -  
142 ostream& operator << (ostream& o, const rcstring& s) 114 ostream& operator << (ostream& o, const rcstring& s)
143 { 115 {
144 return o<<s.data->s; 116 return o<<s.data->s;
examples04/06-threads/makefile
  View file @2c9501c
1 -all: threads1 threads2 volatile1 volatile2 threads1_cxx11 threads2_cxx11 volatile1_cxx11 volatile1_cxx11.s volatile2_cxx11 volatile2_cxx11.s 1 +all: threads1 threads1_cxx11 threads2_cxx11 volatile1_cxx11 volatile1_cxx11.s volatile2_cxx11 volatile2_cxx11.s
2 2
3 threads1: threads1.o 3 threads1: threads1.o
4 g++ -g $^ -lpthread -o$@ 4 g++ -g $^ -lpthread -o$@
@@ -6,12 +6,6 @@ threads1: threads1.o @@ -6,12 +6,6 @@ threads1: threads1.o
6 threads1.o: threads1.cpp 6 threads1.o: threads1.cpp
7 g++ -g -c -Wall -pedantic $< -o $@ 7 g++ -g -c -Wall -pedantic $< -o $@
8 8
9 -threads2: threads2.o  
10 - g++ -g $^ -o $@ -lpthread  
11 -  
12 -threads2.o: threads2.cpp rcstring.h  
13 - g++ -g -c -Wall -pedantic $< -o $@  
14 -  
15 threads1_cxx11: threads1_cxx11.cpp 9 threads1_cxx11: threads1_cxx11.cpp
16 g++ -g -std=c++11 -pthread -Wall -pedantic $< -o $@ 10 g++ -g -std=c++11 -pthread -Wall -pedantic $< -o $@
17 11
@@ -30,27 +24,8 @@ volatile2_cxx11: volatile2_cxx11.cpp @@ -30,27 +24,8 @@ volatile2_cxx11: volatile2_cxx11.cpp
30 volatile2_cxx11.s: volatile2_cxx11.cpp 24 volatile2_cxx11.s: volatile2_cxx11.cpp
31 g++ -g -std=c++11 -pthread -Wall -pedantic -S -O2 $< -o $@ 25 g++ -g -std=c++11 -pthread -Wall -pedantic -S -O2 $< -o $@
32 26
33 -volatile1: volatile1.o  
34 - g++ -g $^ -o $@ -lpthread  
35 -  
36 -volatile1.o: volatile1.s  
37 - g++ -g -c $< -o $@  
38 -  
39 -volatile1.s: volatile1.cpp  
40 - g++ -O2 -S -g -c -Wall -pedantic $< -o $@  
41 -  
42 -  
43 -volatile2: volatile2.o  
44 - g++ -g $^ -o $@ -lpthread  
45 -  
46 -volatile2.o: volatile2.s  
47 - g++ -g -c $< -o $@  
48 -  
49 -volatile2.s: volatile2.cpp  
50 - g++ -O2 -S -g -c -Wall -pedantic $< -o $@  
51 -  
52 27
53 .PHONY: clean 28 .PHONY: clean
54 29
55 clean: 30 clean:
56 - -rm threads1.o threads1 threads2.o threads2 volatile1.o volatile1 volatile2.o volatile2 volatile1.s volatile2.s threads1_cxx11 threads2_cxx11 volatile1_cxx11 volatile1_cxx11.s volatile2_cxx11 volatile2_cxx11.s 31 + -rm threads1.o threads1 threads1_cxx11 threads2_cxx11 volatile1_cxx11 volatile1_cxx11.s volatile2_cxx11 volatile2_cxx11.s
examples04/06-threads/rcstring.h
  View file @2c9501c
@@ -16,7 +16,6 @@ rcstring(); @@ -16,7 +16,6 @@ rcstring();
16 rcstring(const char*); 16 rcstring(const char*);
17 rcstring(const rcstring&); 17 rcstring(const rcstring&);
18 ~rcstring(); 18 ~rcstring();
19 -rcstring& operator=(const char*);  
20 rcstring& operator=(const rcstring&); 19 rcstring& operator=(const rcstring&);
21 rcstring& operator+=(const rcstring &); 20 rcstring& operator+=(const rcstring &);
22 rcstring operator+(const rcstring &) const; 21 rcstring operator+(const rcstring &) const;
@@ -55,21 +54,6 @@ struct rcstring::rctext @@ -55,21 +54,6 @@ struct rcstring::rctext
55 n--; 54 n--;
56 return t; 55 return t;
57 }; 56 };
58 - void assign(unsigned int nsize, const char *p)  
59 - {  
60 - if(size!=nsize)  
61 - {  
62 - char* ns=new char[size+1];  
63 - size = nsize;  
64 - strncpy(ns,p,size);  
65 - delete [] s;  
66 - size = nsize;  
67 - s = ns;  
68 - }  
69 - else  
70 - strncpy(s,p,size);  
71 - s[size]='\0';  
72 - }  
73 private: 57 private:
74 rctext(const rctext&); 58 rctext(const rctext&);
75 rctext& operator=(const rctext&); 59 rctext& operator=(const rctext&);
@@ -129,19 +113,6 @@ rcstring::rcstring(const char* s) @@ -129,19 +113,6 @@ rcstring::rcstring(const char* s)
129 data=new rctext(strlen(s),s); 113 data=new rctext(strlen(s),s);
130 } 114 }
131 115
132 -rcstring& rcstring::operator=(const char* s)  
133 -{  
134 - if(data->n==1)  
135 - data->assign(strlen(s),s);  
136 - else  
137 - {  
138 - rctext* t = new rctext(strlen(s),s);  
139 - data->n--;  
140 - data= t;  
141 - };  
142 - return *this;  
143 -}  
144 -  
145 ostream& operator << (ostream& o, const rcstring& s) 116 ostream& operator << (ostream& o, const rcstring& s)
146 { 117 {
147 return o<<s.data->s; 118 return o<<s.data->s;
examples04/06-threads/threads2.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <pthread.h>  
3 -#include "rcstring.h"  
4 -  
5 -  
6 -rcstring s ("ala");  
7 -  
8 -void *  
9 -thread1 (void *p)  
10 -{  
11 - int *pp = (int *) p;  
12 - printf ("Parameter of thread1: %d\n", *pp);  
13 - *pp = 1;  
14 - for (unsigned int i = 0; i < 100000; i++)  
15 - {  
16 - printf ("Hello from thread 1\n");  
17 - rcstring s1 (s);  
18 - }  
19 - pthread_exit (p);  
20 -}  
21 -  
22 -void *  
23 -thread2 (void *p)  
24 -{  
25 - int *pp = (int *) p;  
26 - printf ("Parameter of thread2: %d\n", *pp);  
27 - *pp = 2;  
28 - for (unsigned int i = 0; i < 100000; i++)  
29 - {  
30 - printf ("Hello from thread 2\n");  
31 - rcstring s1 (s);  
32 - }  
33 - pthread_exit (p);  
34 -}  
35 -  
36 -  
37 -int  
38 -main ()  
39 -{  
40 - pthread_t t1;  
41 - pthread_t t2;  
42 - int *retval1;  
43 - int *retval2;  
44 - int r1 = 10, r2 = 11;  
45 -  
46 -  
47 - pthread_create (&t1, NULL, thread1, &r1);  
48 - pthread_create (&t2, NULL, thread2, &r2);  
49 -  
50 - pthread_join (t1, (void **) &retval1);  
51 - pthread_join (t2, (void **) &retval2);  
52 -  
53 - printf ("%d\n", *retval1);  
54 - printf ("%d\n", *retval2);  
55 - printf ("RefCount=%d\n", s.getRefCount ());  
56 -}  
examples04/06-threads/volatile1.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <pthread.h>  
3 -  
4 -int val = 0;  
5 -  
6 -void *  
7 -fun1 (void *)  
8 -{  
9 - val = 0;  
10 - while (1)  
11 - if (val != 0)  
12 - break;  
13 - printf ("out of the loop\n");  
14 - pthread_exit (NULL);  
15 -}  
16 -  
17 -  
18 -int  
19 -main ()  
20 -{  
21 - pthread_t w;  
22 -  
23 - pthread_create (&w, NULL, fun1, NULL);  
24 - val = 1;  
25 - pthread_join (w, NULL);  
26 -}  
examples04/06-threads/volatile2.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <pthread.h>  
3 -  
4 -volatile int val = 0;  
5 -  
6 -void *  
7 -fun1 (void *)  
8 -{  
9 - val = 0;  
10 - while (1)  
11 - if (val != 0)  
12 - break;  
13 - printf ("out of the loop\n");  
14 - pthread_exit (NULL);  
15 -}  
16 -  
17 -  
18 -int  
19 -main ()  
20 -{  
21 - pthread_t w;  
22 -  
23 - pthread_create (&w, NULL, fun1, NULL);  
24 - val = 1;  
25 - pthread_join (w, NULL);  
26 -}  
examples04/07-threads2/makefile deleted 100644 → 0
  View file @36081a4
1 -all: threads1 threads2 threads3 threads3 threads4 threads5  
2 -  
3 -threads1: threads1.o  
4 - g++ -g $^ -o $@ -lpthread  
5 -  
6 -threads1.o: threads1.cpp rcstring1.h  
7 - g++ -g -c -Wall -pedantic $< -o $@  
8 -  
9 -threads2: threads2.o  
10 - g++ -g $^ -o $@ -lpthread  
11 -  
12 -threads2.o: threads2.cpp rcstring2.h  
13 - g++ -g -c -Wall -pedantic $< -o $@  
14 -  
15 -threads3: threads3.o  
16 - g++ -g $^ -o $@ -lpthread  
17 -  
18 -threads3.o: threads3.cpp rcstring3.h  
19 - g++ -g -c -Wall -pedantic $< -o $@  
20 -  
21 -threads4: threads4.o  
22 - g++ -g $^ -o $@ -lpthread  
23 -  
24 -threads4.o: threads4.cpp  
25 - g++ -g -c -Wall -pedantic $< -o $@  
26 -  
27 -threads5: threads5.o  
28 - g++ -g $^ -o $@ -lpthread  
29 -  
30 -threads5.o: threads5.cpp mystring.h  
31 - g++ -g -c -Wall -pedantic $< -o $@  
32 -  
33 -  
34 -.PHONY: clean  
35 -  
36 -clean:  
37 - -rm threads1.o threads1 threads2.o threads2 threads3.o threads3 threads4.o threads4 threads5.o threads5  
examples04/07-threads2/rcstring2.h deleted 100644 → 0
  View file @36081a4
1 -#ifndef __RCSTRING_H__  
2 -#define __RCSTRING_H__  
3 -#include <string.h>  
4 -#include <stdio.h>  
5 -#include <pthread.h>  
6 -#include <iostream>  
7 -using namespace std;  
8 -  
9 -class rcstring  
10 -{  
11 - struct rctext;  
12 - rctext *data;  
13 -public:  
14 - class Range  
15 - {  
16 - };  
17 - class Cref;  
18 - rcstring ();  
19 - rcstring (const char *);  
20 - rcstring (const rcstring &);  
21 - ~rcstring ();  
22 - rcstring & operator= (const char *);  
23 - rcstring & operator= (const rcstring &);  
24 - rcstring & operator+= (const rcstring &);  
25 - rcstring operator+ (const rcstring &) const;  
26 - friend ostream & operator<< (ostream &, const rcstring &);  
27 - void check (unsigned int i) const;  
28 - char read (unsigned int i) const;  
29 - void write (unsigned int i, char c);  
30 - char operator[] (unsigned int i) const;  
31 - Cref operator[] (unsigned int i);  
32 - unsigned int getRefCount ();  
33 -};  
34 -  
35 -struct rcstring::rctext  
36 -{  
37 - char *s;  
38 - unsigned int size;  
39 - unsigned int n;  
40 - pthread_mutex_t mutex;  
41 -  
42 - rctext (unsigned int nsize, const char *p)  
43 - {  
44 - n = 1;  
45 - size = nsize;  
46 - s = new char[size + 1];  
47 - strncpy (s, p, size);  
48 - s[size] = '\0';  
49 - pthread_mutex_init (&mutex, NULL);  
50 - };  
51 - ~rctext ()  
52 - {  
53 - delete[]s;  
54 - pthread_mutex_destroy(&mutex);  
55 - };  
56 - unsigned int AtomicRead()  
57 - {  
58 - unsigned int retval;  
59 - pthread_mutex_lock(&mutex);  
60 - retval = n;  
61 - pthread_mutex_unlock(&mutex);  
62 - return retval;  
63 - };  
64 -  
65 - unsigned int AtomicIncrement()  
66 - {  
67 - pthread_mutex_lock(&mutex);  
68 - unsigned int retval=++n;  
69 - pthread_mutex_unlock(&mutex);  
70 - return retval;  
71 - };  
72 -  
73 - unsigned int AtomicDecrement()  
74 - {  
75 - pthread_mutex_lock(&mutex);  
76 - unsigned int retval=--n;  
77 - pthread_mutex_unlock(&mutex);  
78 - return retval;  
79 - };  
80 -  
81 - void assign (unsigned int nsize, const char *p)  
82 - {  
83 - if (size != nsize)  
84 - {  
85 - char *ns = new char[size + 1];  
86 - size = nsize;  
87 - strncpy (ns, p, size);  
88 - delete[]s;  
89 - size = nsize;  
90 - s = ns;  
91 - }  
92 - else  
93 - strncpy (s, p, size);  
94 - s[size] = '\0';  
95 - }  
96 -  
97 -private:  
98 - rctext (const rctext &);  
99 - rctext & operator= (const rctext &);  
100 -};  
101 -  
102 -class  
103 - rcstring::Cref  
104 -{  
105 - friend class rcstring;  
106 - rcstring & s;  
107 - int i;  
108 - Cref (rcstring & ss, unsigned int ii): s (ss), i (ii) {};  
109 -public:  
110 - operator char () const  
111 - {  
112 - return s.read (i);  
113 - }  
114 - rcstring::Cref &  
115 - operator = (char c)  
116 - {  
117 - s.write (i, c);  
118 - return *this;  
119 - };  
120 - rcstring::Cref & operator = (const Cref & ref)  
121 - {  
122 - return operator= ((char) ref);  
123 - };  
124 -};  
125 -inline  
126 -rcstring::rcstring ()  
127 -{  
128 - data = new rctext (0, "");  
129 -}  
130 -  
131 -inline  
132 -rcstring::rcstring (const rcstring & x)  
133 -{  
134 - x.data->AtomicIncrement();  
135 - data = x.data;  
136 -}  
137 -  
138 -inline  
139 -rcstring::~rcstring ()  
140 -{  
141 - if(data->AtomicDecrement()==0)  
142 - delete data;  
143 -}  
144 -  
145 -rcstring & rcstring::operator= (const rcstring & x)  
146 -{  
147 - rctext* olddata=data;  
148 - x.data->AtomicIncrement();  
149 - data = x.data;  
150 - if(olddata->AtomicDecrement()==0)  
151 - delete olddata;  
152 - return *this;  
153 -}  
154 -  
155 -rcstring::rcstring (const char *s)  
156 -{  
157 - data = new rctext (strlen (s), s);  
158 -}  
159 -  
160 -rcstring & rcstring::operator= (const char *s)  
161 -{  
162 - if (data->AtomicRead() == 1)  
163 - data->assign (strlen (s), s);  
164 - else  
165 - {  
166 - rctext* olddata=data;  
167 - data = new rctext (strlen (s), s);  
168 - if(olddata->AtomicDecrement()==0)  
169 - delete olddata;  
170 - };  
171 - return *this;  
172 -}  
173 -  
174 -ostream & operator << (ostream & o, const rcstring & s)  
175 -{  
176 - return o << s.data->s;  
177 -}  
178 -  
179 -rcstring & rcstring::operator+= (const rcstring & s)  
180 -{  
181 - int newsize = data->size + s.data->size;  
182 - rctext * newdata = new rctext (newsize, data->s);  
183 - strcat (newdata->s, s.data->s);  
184 - rctext* olddata=data;  
185 - data=newdata;  
186 - if(olddata->AtomicDecrement()==0)  
187 - delete olddata;  
188 - return *this;  
189 -}  
190 -  
191 -rcstring  
192 -rcstring::operator+ (const rcstring & s) const  
193 -{  
194 - return rcstring (*this) += s;  
195 -}  
196 -  
197 -inline void  
198 -rcstring::check (unsigned int i) const  
199 -{  
200 - if (data->size <= i)  
201 - throw Range ();  
202 -}  
203 -  
204 -inline char  
205 -rcstring::read (unsigned int i) const  
206 -{  
207 - return data->s[i];  
208 -}  
209 -  
210 -inline void  
211 -rcstring::write (unsigned int i, char c)  
212 -{  
213 - if (data->AtomicRead() > 1)  
214 - {  
215 - rctext* newdata=new rctext(data->size,data->s);  
216 - rctext* olddata=data;  
217 - data=newdata;  
218 - if(olddata->AtomicDecrement() == 0)  
219 - delete olddata;  
220 - }  
221 - data->s[i] = c;  
222 -}  
223 -  
224 -char  
225 -rcstring::operator[] (unsigned int i) const  
226 -{  
227 - check (i);  
228 - return data->s[i];  
229 -}  
230 -  
231 -rcstring::Cref rcstring::operator[](unsigned int i)  
232 -{  
233 - check (i);  
234 - return Cref (*this, i);  
235 -}  
236 -  
237 -  
238 -unsigned int  
239 -rcstring::getRefCount ()  
240 -{  
241 - return data->AtomicRead();;  
242 -}  
243 -  
244 -#endif /* __RCSTRING_H__ */  
examples04/07-threads2/rcstring3.h deleted 100644 → 0
  View file @36081a4
1 -#ifndef __RCSTRING_H__  
2 -#define __RCSTRING_H__  
3 -#include <string.h>  
4 -#include <stdio.h>  
5 -#include <ext/atomicity.h>  
6 -using namespace __gnu_cxx;  
7 -#include <iostream>  
8 -using namespace std;  
9 -  
10 -class rcstring  
11 -{  
12 - struct rctext;  
13 - rctext *data;  
14 -public:  
15 - class Range  
16 - {  
17 - };  
18 - class Cref;  
19 - rcstring ();  
20 - rcstring (const char *);  
21 - rcstring (const rcstring &);  
22 - ~rcstring ();  
23 - rcstring & operator= (const char *);  
24 - rcstring & operator= (const rcstring &);  
25 - rcstring & operator+= (const rcstring &);  
26 - rcstring operator+ (const rcstring &) const;  
27 - friend ostream & operator<< (ostream &, const rcstring &);  
28 - void check (unsigned int i) const;  
29 - char read (unsigned int i) const;  
30 - void write (unsigned int i, char c);  
31 - char operator[] (unsigned int i) const;  
32 - Cref operator[] (unsigned int i);  
33 - unsigned int getRefCount ();  
34 -};  
35 -  
36 -struct rcstring::rctext  
37 -{  
38 - char *s;  
39 - unsigned int size;  
40 - _Atomic_word n;  
41 -  
42 - rctext (unsigned int nsize, const char *p)  
43 - {  
44 - n = 1;  
45 - size = nsize;  
46 - s = new char[size + 1];  
47 - strncpy (s, p, size);  
48 - s[size] = '\0';  
49 - };  
50 - ~rctext ()  
51 - {  
52 - delete[]s;  
53 - };  
54 - unsigned int AtomicRead()  
55 - {  
56 - return __exchange_and_add(&n,0);  
57 - };  
58 -  
59 - unsigned int AtomicIncrement()  
60 - {  
61 - return __exchange_and_add(&n,1)+1;  
62 - };  
63 -  
64 - unsigned int AtomicDecrement()  
65 - {  
66 - return __exchange_and_add(&n,-1)-1;  
67 - };  
68 -  
69 - void assign (unsigned int nsize, const char *p)  
70 - {  
71 - if (size != nsize)  
72 - {  
73 - char *ns = new char[size + 1];  
74 - size = nsize;  
75 - strncpy (ns, p, size);  
76 - delete[]s;  
77 - size = nsize;  
78 - s = ns;  
79 - }  
80 - else  
81 - strncpy (s, p, size);  
82 - s[size] = '\0';  
83 - }  
84 -  
85 -private:  
86 - rctext (const rctext &);  
87 - rctext & operator= (const rctext &);  
88 -};  
89 -  
90 -class  
91 - rcstring::Cref  
92 -{  
93 - friend class rcstring;  
94 - rcstring & s;  
95 - int i;  
96 - Cref (rcstring & ss, unsigned int ii): s (ss), i (ii) {};  
97 -public:  
98 - operator char () const  
99 - {  
100 - return s.read (i);  
101 - }  
102 - rcstring::Cref &  
103 - operator = (char c)  
104 - {  
105 - s.write (i, c);  
106 - return *this;  
107 - };  
108 - rcstring::Cref & operator = (const Cref & ref)  
109 - {  
110 - return operator= ((char) ref);  
111 - };  
112 -};  
113 -inline  
114 -rcstring::rcstring ()  
115 -{  
116 - data = new rctext (0, "");  
117 -}  
118 -  
119 -inline  
120 -rcstring::rcstring (const rcstring & x)  
121 -{  
122 - x.data->AtomicIncrement();  
123 - data = x.data;  
124 -}  
125 -  
126 -inline  
127 -rcstring::~rcstring ()  
128 -{  
129 - if(data->AtomicDecrement()==0)  
130 - delete data;  
131 -}  
132 -  
133 -rcstring & rcstring::operator= (const rcstring & x)  
134 -{  
135 - rctext* olddata=data;  
136 - x.data->AtomicIncrement();  
137 - data = x.data;  
138 - if(olddata->AtomicDecrement()==0)  
139 - delete olddata;  
140 - return *this;  
141 -}  
142 -  
143 -rcstring::rcstring (const char *s)  
144 -{  
145 - data = new rctext (strlen (s), s);  
146 -}  
147 -  
148 -rcstring & rcstring::operator= (const char *s)  
149 -{  
150 - if (data->AtomicRead() == 1)  
151 - data->assign (strlen (s), s);  
152 - else  
153 - {  
154 - rctext* olddata=data;  
155 - data = new rctext (strlen (s), s);  
156 - if(olddata->AtomicDecrement()==0)  
157 - delete olddata;  
158 - };  
159 - return *this;  
160 -}  
161 -  
162 -ostream & operator << (ostream & o, const rcstring & s)  
163 -{  
164 - return o << s.data->s;  
165 -}  
166 -  
167 -rcstring & rcstring::operator+= (const rcstring & s)  
168 -{  
169 - int newsize = data->size + s.data->size;  
170 - rctext * newdata = new rctext (newsize, data->s);  
171 - strcat (newdata->s, s.data->s);  
172 - rctext* olddata=data;  
173 - data=newdata;  
174 - if(olddata->AtomicDecrement()==0)  
175 - delete olddata;  
176 - return *this;  
177 -}  
178 -  
179 -rcstring  
180 -rcstring::operator+ (const rcstring & s) const  
181 -{  
182 - return rcstring (*this) += s;  
183 -}  
184 -  
185 -inline void  
186 -rcstring::check (unsigned int i) const  
187 -{  
188 - if (data->size <= i)  
189 - throw Range ();  
190 -}  
191 -  
192 -inline char  
193 -rcstring::read (unsigned int i) const  
194 -{  
195 - return data->s[i];  
196 -}  
197 -  
198 -inline void  
199 -rcstring::write (unsigned int i, char c)  
200 -{  
201 - if (data->AtomicRead() > 1)  
202 - {  
203 - rctext* newdata=new rctext(data->size,data->s);  
204 - rctext* olddata=data;  
205 - data=newdata;  
206 - if(olddata->AtomicDecrement() == 0)  
207 - delete olddata;  
208 - }  
209 - data->s[i] = c;  
210 -}  
211 -  
212 -char  
213 -rcstring::operator[] (unsigned int i) const  
214 -{  
215 - check (i);  
216 - return data->s[i];  
217 -}  
218 -  
219 -rcstring::Cref rcstring::operator[](unsigned int i)  
220 -{  
221 - check (i);  
222 - return Cref (*this, i);  
223 -}  
224 -  
225 -  
226 -unsigned int  
227 -rcstring::getRefCount ()  
228 -{  
229 - return data->AtomicRead();;  
230 -}  
231 -  
232 -#endif /* __RCSTRING_H__ */  
examples04/07-threads2/threads1.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include "rcstring1.h"  
3 -  
4 -  
5 -rcstring s ("ala");  
6 -  
7 -void *  
8 -thread1 (void *p)  
9 -{  
10 - int *pp = (int *) p;  
11 - printf ("Parameter of thread1: %d\n", *pp);  
12 - *pp = 1;  
13 - for (unsigned int i = 0; i < 100000; i++)  
14 - {  
15 - rcstring s1 (s);  
16 - }  
17 - pthread_exit (p);  
18 -}  
19 -  
20 -void *  
21 -thread2 (void *p)  
22 -{  
23 - int *pp = (int *) p;  
24 - printf ("Parameter of thread2: %d\n", *pp);  
25 - *pp = 2;  
26 - for (unsigned int i = 0; i < 100000; i++)  
27 - {  
28 - rcstring s1 (s);  
29 - }  
30 - pthread_exit (p);  
31 -}  
32 -  
33 -  
34 -int  
35 -main ()  
36 -{  
37 - pthread_t t1;  
38 - pthread_t t2;  
39 - int *retval1;  
40 - int *retval2;  
41 - int r1 = 10, r2 = 11;  
42 -  
43 -  
44 - pthread_create (&t1, NULL, thread1, &r1);  
45 - pthread_create (&t2, NULL, thread2, &r2);  
46 -  
47 - pthread_join (t1, (void **) &retval1);  
48 - pthread_join (t2, (void **) &retval2);  
49 -  
50 - printf ("%d\n", *retval1);  
51 - printf ("%d\n", *retval2);  
52 - printf ("RefCount=%d\n", s.getRefCount ());  
53 -}  
examples04/07-threads2/threads2.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <pthread.h>  
3 -#include "rcstring2.h"  
4 -  
5 -  
6 -rcstring s ("ala");  
7 -  
8 -void *  
9 -thread1 (void *p)  
10 -{  
11 - int *pp = (int *) p;  
12 - printf ("Parameter of thread1: %d\n", *pp);  
13 - *pp = 1;  
14 - for (unsigned int i = 0; i < 100000; i++)  
15 - {  
16 - rcstring s1 (s);  
17 - }  
18 - pthread_exit (p);  
19 -}  
20 -  
21 -void *  
22 -thread2 (void *p)  
23 -{  
24 - int *pp = (int *) p;  
25 - printf ("Parameter of thread2: %d\n", *pp);  
26 - *pp = 2;  
27 - for (unsigned int i = 0; i < 100000; i++)  
28 - {  
29 - rcstring s1 (s);  
30 - }  
31 - pthread_exit (p);  
32 -}  
33 -  
34 -  
35 -int  
36 -main ()  
37 -{  
38 - pthread_t t1;  
39 - pthread_t t2;  
40 - int *retval1;  
41 - int *retval2;  
42 - int r1 = 10, r2 = 11;  
43 -  
44 -  
45 - pthread_create (&t1, NULL, thread1, &r1);  
46 - pthread_create (&t2, NULL, thread2, &r2);  
47 -  
48 - pthread_join (t1, (void **) &retval1);  
49 - pthread_join (t2, (void **) &retval2);  
50 -  
51 - printf ("%d\n", *retval1);  
52 - printf ("%d\n", *retval2);  
53 - printf ("RefCount=%d\n", s.getRefCount ());  
54 -}  
examples04/07-threads2/threads3.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <pthread.h>  
3 -#include "rcstring3.h"  
4 -  
5 -  
6 -rcstring s ("ala");  
7 -  
8 -void *  
9 -thread1 (void *p)  
10 -{  
11 - int *pp = (int *) p;  
12 - printf ("Parameter of thread1: %d\n", *pp);  
13 - *pp = 1;  
14 - for (unsigned int i = 0; i < 100000; i++)  
15 - {  
16 - rcstring s1 (s);  
17 - }  
18 - pthread_exit (p);  
19 -}  
20 -  
21 -void *  
22 -thread2 (void *p)  
23 -{  
24 - int *pp = (int *) p;  
25 - printf ("Parameter of thread2: %d\n", *pp);  
26 - *pp = 2;  
27 - for (unsigned int i = 0; i < 100000; i++)  
28 - {  
29 - rcstring s1 (s);  
30 - }  
31 - pthread_exit (p);  
32 -}  
33 -  
34 -  
35 -int  
36 -main ()  
37 -{  
38 - pthread_t t1;  
39 - pthread_t t2;  
40 - int *retval1;  
41 - int *retval2;  
42 - int r1 = 10, r2 = 11;  
43 -  
44 -  
45 - pthread_create (&t1, NULL, thread1, &r1);  
46 - pthread_create (&t2, NULL, thread2, &r2);  
47 -  
48 - pthread_join (t1, (void **) &retval1);  
49 - pthread_join (t2, (void **) &retval2);  
50 -  
51 - printf ("%d\n", *retval1);  
52 - printf ("%d\n", *retval2);  
53 - printf ("RefCount=%d\n", s.getRefCount ());  
54 -}  
examples04/07-threads2/threads4.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include <string>  
3 -using namespace std;  
4 -  
5 -  
6 -string s ("ala");  
7 -  
8 -void *  
9 -thread1 (void *p)  
10 -{  
11 - int *pp = (int *) p;  
12 - printf ("Parameter of thread1: %d\n", *pp);  
13 - *pp = 1;  
14 - for (unsigned int i = 0; i < 100000; i++)  
15 - {  
16 - string s1 (s);  
17 - }  
18 - pthread_exit (p);  
19 -}  
20 -  
21 -void *  
22 -thread2 (void *p)  
23 -{  
24 - int *pp = (int *) p;  
25 - printf ("Parameter of thread2: %d\n", *pp);  
26 - *pp = 2;  
27 - for (unsigned int i = 0; i < 100000; i++)  
28 - {  
29 - string s1 (s);  
30 - }  
31 - pthread_exit (p);  
32 -}  
33 -  
34 -  
35 -int  
36 -main ()  
37 -{  
38 - pthread_t t1;  
39 - pthread_t t2;  
40 - int *retval1;  
41 - int *retval2;  
42 - int r1 = 10, r2 = 11;  
43 -  
44 -  
45 - pthread_create (&t1, NULL, thread1, &r1);  
46 - pthread_create (&t2, NULL, thread2, &r2);  
47 -  
48 - pthread_join (t1, (void **) &retval1);  
49 - pthread_join (t2, (void **) &retval2);  
50 -  
51 - printf ("%d\n", *retval1);  
52 - printf ("%d\n", *retval2);  
53 -}  
examples04/07-threads2/threads5.cpp deleted 100644 → 0
  View file @36081a4
1 -#include <stdio.h>  
2 -#include "mystring.h"  
3 -  
4 -string s ("ala");  
5 -  
6 -void *  
7 -thread1 (void *p)  
8 -{  
9 - int *pp = (int *) p;  
10 - printf ("Parameter of thread1: %d\n", *pp);  
11 - *pp = 1;  
12 - for (unsigned int i = 0; i < 100000; i++)  
13 - {  
14 - string s1 (s);  
15 - }  
16 - pthread_exit (p);  
17 -}  
18 -  
19 -void *  
20 -thread2 (void *p)  
21 -{  
22 - int *pp = (int *) p;  
23 - printf ("Parameter of thread2: %d\n", *pp);  
24 - *pp = 2;  
25 - for (unsigned int i = 0; i < 100000; i++)  
26 - {  
27 - string s1 (s);  
28 - }  
29 - pthread_exit (p);  
30 -}  
31 -  
32 -  
33 -int  
34 -main ()  
35 -{  
36 - pthread_t t1;  
37 - pthread_t t2;  
38 - int *retval1;  
39 - int *retval2;  
40 - int r1 = 10, r2 = 11;  
41 -  
42 -  
43 - pthread_create (&t1, NULL, thread1, &r1);  
44 - pthread_create (&t2, NULL, thread2, &r2);  
45 -  
46 - pthread_join (t1, (void **) &retval1);  
47 - pthread_join (t2, (void **) &retval2);  
48 -  
49 - printf ("%d\n", *retval1);  
50 - printf ("%d\n", *retval2);  
51 -}  
examples04/08-threads2_cxx11/makefile renamed to examples04/07-threads2_cxx11/makefile
  View file @2c9501c
examples04/07-threads2/mystring.h renamed to examples04/07-threads2_cxx11/mystring.h
  View file @2c9501c
examples04/07-threads2/rcstring1.h renamed to examples04/07-threads2_cxx11/rcstring1.h
  View file @2c9501c
@@ -16,7 +16,6 @@ rcstring(); @@ -16,7 +16,6 @@ rcstring();
16 rcstring(const char*); 16 rcstring(const char*);
17 rcstring(const rcstring&); 17 rcstring(const rcstring&);
18 ~rcstring(); 18 ~rcstring();
19 -rcstring& operator=(const char*);  
20 rcstring& operator=(const rcstring&); 19 rcstring& operator=(const rcstring&);
21 rcstring& operator+=(const rcstring &); 20 rcstring& operator+=(const rcstring &);
22 rcstring operator+(const rcstring &) const; 21 rcstring operator+(const rcstring &) const;
@@ -55,21 +54,6 @@ struct rcstring::rctext @@ -55,21 +54,6 @@ struct rcstring::rctext
55 n--; 54 n--;
56 return t; 55 return t;
57 }; 56 };
58 - void assign(unsigned int nsize, const char *p)  
59 - {  
60 - if(size!=nsize)  
61 - {  
62 - char* ns=new char[size+1];  
63 - size = nsize;  
64 - strncpy(ns,p,size);  
65 - delete [] s;  
66 - size = nsize;  
67 - s = ns;  
68 - }  
69 - else  
70 - strncpy(s,p,size);  
71 - s[size]='\0';  
72 - }  
73 private: 57 private:
74 rctext(const rctext&); 58 rctext(const rctext&);
75 rctext& operator=(const rctext&); 59 rctext& operator=(const rctext&);
@@ -128,19 +112,6 @@ rcstring::rcstring(const char* s) @@ -128,19 +112,6 @@ rcstring::rcstring(const char* s)
128 data=new rctext(strlen(s),s); 112 data=new rctext(strlen(s),s);
129 } 113 }
130 114
131 -rcstring& rcstring::operator=(const char* s)  
132 -{  
133 - if(data->n==1)  
134 - data->assign(strlen(s),s);  
135 - else  
136 - {  
137 - rctext* t = new rctext(strlen(s),s);  
138 - data->n--;  
139 - data= t;  
140 - };  
141 - return *this;  
142 -}  
143 -  
144 ostream& operator << (ostream& o, const rcstring& s) 115 ostream& operator << (ostream& o, const rcstring& s)
145 { 116 {
146 return o<<s.data->s; 117 return o<<s.data->s;
examples04/08-threads2_cxx11/rcstring2.h renamed to examples04/07-threads2_cxx11/rcstring2.h
  View file @2c9501c
@@ -19,7 +19,6 @@ public: @@ -19,7 +19,6 @@ public:
19 rcstring (const char *); 19 rcstring (const char *);
20 rcstring (const rcstring &); 20 rcstring (const rcstring &);
21 ~rcstring (); 21 ~rcstring ();
22 - rcstring & operator= (const char *);  
23 rcstring & operator= (const rcstring &); 22 rcstring & operator= (const rcstring &);
24 rcstring & operator+= (const rcstring &); 23 rcstring & operator+= (const rcstring &);
25 rcstring operator+ (const rcstring &) const; 24 rcstring operator+ (const rcstring &) const;
@@ -76,22 +75,6 @@ struct rcstring::rctext @@ -76,22 +75,6 @@ struct rcstring::rctext
76 return retval; 75 return retval;
77 }; 76 };
78 77
79 - void assign (unsigned int nsize, const char *p)  
80 - {  
81 - if (size != nsize)  
82 - {  
83 - char *ns = new char[size + 1];  
84 - size = nsize;  
85 - strncpy (ns, p, size);  
86 - delete[]s;  
87 - size = nsize;  
88 - s = ns;  
89 - }  
90 - else  
91 - strncpy (s, p, size);  
92 - s[size] = '\0';  
93 - }  
94 -  
95 private: 78 private:
96 rctext (const rctext &); 79 rctext (const rctext &);
97 rctext & operator= (const rctext &); 80 rctext & operator= (const rctext &);
@@ -155,20 +138,6 @@ rcstring::rcstring (const char *s) @@ -155,20 +138,6 @@ rcstring::rcstring (const char *s)
155 data = new rctext (strlen (s), s); 138 data = new rctext (strlen (s), s);
156 } 139 }
157 140
158 -rcstring & rcstring::operator= (const char *s)  
159 -{  
160 - if (data->AtomicRead() == 1)  
161 - data->assign (strlen (s), s);  
162 - else  
163 - {  
164 - rctext* olddata=data;  
165 - data = new rctext (strlen (s), s);  
166 - if(olddata->AtomicDecrement()==0)  
167 - delete olddata;  
168 - };  
169 - return *this;  
170 -}  
171 -  
172 ostream & operator << (ostream & o, const rcstring & s) 141 ostream & operator << (ostream & o, const rcstring & s)
173 { 142 {
174 return o << s.data->s; 143 return o << s.data->s;
examples04/08-threads2_cxx11/rcstring3.h renamed to examples04/07-threads2_cxx11/rcstring3.h
  View file @2c9501c
@@ -19,7 +19,6 @@ public: @@ -19,7 +19,6 @@ public:
19 rcstring (const char *); 19 rcstring (const char *);
20 rcstring (const rcstring &); 20 rcstring (const rcstring &);
21 ~rcstring (); 21 ~rcstring ();
22 - rcstring & operator= (const char *);  
23 rcstring & operator= (const rcstring &); 22 rcstring & operator= (const rcstring &);
24 rcstring & operator+= (const rcstring &); 23 rcstring & operator+= (const rcstring &);
25 rcstring operator+ (const rcstring &) const; 24 rcstring operator+ (const rcstring &) const;
@@ -65,22 +64,6 @@ struct rcstring::rctext @@ -65,22 +64,6 @@ struct rcstring::rctext
65 return --n; 64 return --n;
66 }; 65 };
67 66
68 - void assign (unsigned int nsize, const char *p)  
69 - {  
70 - if (size != nsize)  
71 - {  
72 - char *ns = new char[size + 1];  
73 - size = nsize;  
74 - strncpy (ns, p, size);  
75 - delete[]s;  
76 - size = nsize;  
77 - s = ns;  
78 - }  
79 - else  
80 - strncpy (s, p, size);  
81 - s[size] = '\0';  
82 - }  
83 -  
84 private: 67 private:
85 rctext (const rctext &); 68 rctext (const rctext &);
86 rctext & operator= (const rctext &); 69 rctext & operator= (const rctext &);
@@ -144,20 +127,6 @@ rcstring::rcstring (const char *s) @@ -144,20 +127,6 @@ rcstring::rcstring (const char *s)
144 data = new rctext (strlen (s), s); 127 data = new rctext (strlen (s), s);
145 } 128 }
146 129
147 -rcstring & rcstring::operator= (const char *s)  
148 -{  
149 - if (data->AtomicRead() == 1)  
150 - data->assign (strlen (s), s);  
151 - else  
152 - {  
153 - rctext* olddata=data;  
154 - data = new rctext (strlen (s), s);  
155 - if(olddata->AtomicDecrement()==0)  
156 - delete olddata;  
157 - };  
158 - return *this;  
159 -}  
160 -  
161 ostream & operator << (ostream & o, const rcstring & s) 130 ostream & operator << (ostream & o, const rcstring & s)
162 { 131 {
163 return o << s.data->s; 132 return o << s.data->s;
examples04/08-threads2_cxx11/threads1.cpp renamed to examples04/07-threads2_cxx11/threads1.cpp
  View file @2c9501c
examples04/08-threads2_cxx11/threads2.cpp renamed to examples04/07-threads2_cxx11/threads2.cpp
  View file @2c9501c
examples04/08-threads2_cxx11/threads3.cpp renamed to examples04/07-threads2_cxx11/threads3.cpp
  View file @2c9501c
examples04/08-threads2_cxx11/threads4.cpp renamed to examples04/07-threads2_cxx11/threads4.cpp
  View file @2c9501c
examples04/08-threads2_cxx11/threads5.cpp renamed to examples04/07-threads2_cxx11/threads5.cpp
  View file @2c9501c
examples04/08-threads2_cxx11/mystring.h deleted 100644 → 0
  View file @36081a4
1 -#ifndef __MYSTRING_H__  
2 -#define __MYSTRING_H__  
3 -  
4 -#include <string.h>  
5 -#include <iostream>  
6 -  
7 -class string  
8 -{  
9 - char *data;  
10 - unsigned len;  
11 -public:  
12 - string ():data (0), len(0)  
13 - {  
14 - };  
15 - ~string ()  
16 - {  
17 - delete[]data;  
18 - };  
19 - string (const char *s)  
20 - {  
21 - if (s)  
22 - {  
23 - len=strlen(s);  
24 - data = new char[len + 1];  
25 - strcpy (data, s);  
26 - }  
27 - else  
28 - {  
29 - data = 0;  
30 - len = 0;  
31 - }  
32 - };  
33 -  
34 - string (const string & src)  
35 - {  
36 - if (src.data)  
37 - {  
38 - data = new char[src.len + 1];  
39 - len = src.len;  
40 - strcpy (data, src.data);  
41 - }  
42 - else  
43 - {  
44 - data = 0;  
45 - len = 0;  
46 - }  
47 - };  
48 - string & operator= (const string & src)  
49 - {  
50 - if (this != &src)  
51 - {  
52 - delete[]data;  
53 - if (src.data)  
54 - {  
55 - data = new char[src.len + 1];  
56 - strcpy (data, src.data);  
57 - }  
58 - else  
59 - {  
60 - data = 0;  
61 - len = 0;  
62 - }  
63 - };  
64 - return *this;  
65 - }  
66 -};  
67 -  
68 -  
69 -#endif /* __string_H__ */  
examples04/08-threads2_cxx11/rcstring1.h deleted 100644 → 0
  View file @36081a4
1 -#ifndef __RCSTRING_H__  
2 -#define __RCSTRING_H__  
3 -#include <string.h>  
4 -#include <stdio.h>  
5 -#include <malloc.h>  
6 -#include <iostream>  
7 -using namespace std;  
8 -  
9 -class rcstring{  
10 - struct rctext;  
11 - rctext* data;  
12 -public:  
13 -class Range{};  
14 -class Cref;  
15 -rcstring();  
16 -rcstring(const char*);  
17 -rcstring(const rcstring&);  
18 -~rcstring();  
19 -rcstring& operator=(const char*);  
20 -rcstring& operator=(const rcstring&);  
21 -rcstring& operator+=(const rcstring &);  
22 -rcstring operator+(const rcstring &) const;  
23 -friend ostream& operator<<(ostream&, const rcstring&);  
24 -void check (unsigned int i) const;  
25 -char read(unsigned int i) const;  
26 -void write(unsigned int i, char c);  
27 -char operator[](unsigned int i) const;  
28 -Cref operator[](unsigned int i);  
29 -unsigned int getRefCount();  
30 -};  
31 -  
32 -struct rcstring::rctext  
33 -{  
34 - char* s;  
35 - unsigned int size;  
36 - volatile unsigned int n;  
37 -  
38 - rctext(unsigned int nsize, const char* p)  
39 - {  
40 - n=1;  
41 - size=nsize;  
42 - s=new char[size+1];  
43 - strncpy(s,p,size);  
44 - s[size]='\0';  
45 - };  
46 - ~rctext()  
47 - {  
48 - delete [] s;  
49 - };  
50 - rctext* detach()  
51 - {  
52 - if(n==1)  
53 - return this;  
54 - rctext* t=new rctext(size, s);  
55 - n--;  
56 - return t;  
57 - };  
58 - void assign(unsigned int nsize, const char *p)  
59 - {  
60 - if(size!=nsize)  
61 - {  
62 - char* ns=new char[size+1];  
63 - size = nsize;  
64 - strncpy(ns,p,size);  
65 - delete [] s;  
66 - size = nsize;  
67 - s = ns;  
68 - }  
69 - else  
70 - strncpy(s,p,size);  
71 - s[size]='\0';  
72 - }  
73 -private:  
74 - rctext(const rctext&);  
75 - rctext& operator=(const rctext&);  
76 -};  
77 -  
78 -class rcstring::Cref  
79 -{  
80 - friend class rcstring;  
81 - rcstring& s;  
82 - int i;  
83 - Cref (rcstring& ss, unsigned int ii): s(ss), i(ii) {};  
84 -public:  
85 - operator char() const  
86 - {  
87 - cout << "operator char() const"<<endl;  
88 - return s.read(i);  
89 - }  
90 - rcstring::Cref& operator = (char c)  
91 - {  
92 - cout << "void operator = (char c)"<<endl;  
93 - s.write(i,c);  
94 - return *this;  
95 - };  
96 - rcstring::Cref& operator = (const Cref& ref)  
97 - {  
98 - return operator= ((char)ref);  
99 - };  
100 -};  
101 -inline rcstring::rcstring()  
102 - {  
103 - data = new rctext(0,"");  
104 - }  
105 -  
106 -inline rcstring::rcstring(const rcstring& x)  
107 - {  
108 - x.data->n++;  
109 - data=x.data;  
110 - }  
111 -inline rcstring::~rcstring()  
112 -{  
113 - if(--data->n==0)  
114 - delete data;  
115 -}  
116 -  
117 -rcstring& rcstring::operator=(const rcstring & x)  
118 -{  
119 - x.data->n++;  
120 - if(--data->n == 0)  
121 - delete data;  
122 - data=x.data;  
123 - return *this;  
124 -}  
125 -  
126 -rcstring::rcstring(const char* s)  
127 -{  
128 - data=new rctext(strlen(s),s);  
129 -}  
130 -  
131 -rcstring& rcstring::operator=(const char* s)  
132 -{  
133 - if(data->n==1)  
134 - data->assign(strlen(s),s);  
135 - else  
136 - {  
137 - rctext* t = new rctext(strlen(s),s);  
138 - data->n--;  
139 - data= t;  
140 - };  
141 - return *this;  
142 -}  
143 -  
144 -ostream& operator << (ostream& o, const rcstring& s)  
145 -{  
146 - return o<<s.data->s;  
147 -}  
148 -  
149 -rcstring& rcstring::operator+=(const rcstring & s)  
150 -{  
151 -int newsize=data->size+s.data->size;  
152 -rctext *newdata=new rctext(newsize,data->s);  
153 -strcat(newdata->s,s.data->s);  
154 -if(--data->n==0)  
155 - delete data;  
156 -data = newdata;  
157 -return *this;  
158 -}  
159 -  
160 -rcstring rcstring::operator+(const rcstring & s) const  
161 -{  
162 - return rcstring(*this)+=s;  
163 -}  
164 -  
165 -inline void rcstring::check (unsigned int i) const  
166 -{  
167 -if(data->size<=i)  
168 - throw Range();  
169 -}  
170 -inline char rcstring::read(unsigned int i) const  
171 -{  
172 - return data->s[i];  
173 -}  
174 -inline void rcstring::write(unsigned int i, char c)  
175 -{  
176 - data = data->detach();  
177 - data->s[i] = c;  
178 -}  
179 -  
180 -char rcstring::operator[](unsigned int i) const  
181 -{  
182 - cout << "char rcstring::operator[](unsigned int i) const"<<endl;  
183 - check(i);  
184 - return data->s[i];  
185 -}  
186 -  
187 -rcstring::Cref rcstring::operator[](unsigned int i)  
188 -{  
189 - cout << "Cref rcstring::operator[](unsigned int i)"<<endl;  
190 - check(i);  
191 - return Cref(*this,i);  
192 -}  
193 -  
194 -  
195 -unsigned int  
196 -rcstring::getRefCount()  
197 -{  
198 - return data->n;  
199 -}  
200 -  
201 -#endif /* __RCSTRING_H__ */