-
Notifications
You must be signed in to change notification settings - Fork 0
/
HttpStream.cpp
232 lines (203 loc) · 4.6 KB
/
HttpStream.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
#include "HttpStream.h"
#include <stdlib.h>
#include <string.h>
#ifdef SLSERVER_WIN32
#include <windows.h>
#endif
#ifdef SLSERVER_LINUX
#include <unistd.h>
#endif
HttpStream::HttpStream(int size_count,int cnt) :_page_size(size_count),_isDown(false){
pthread_mutex_init(&_write_mutex, NULL);
_free_page = new list<u8*>();
_p_arr = new list<u8*>();
u8* temp = NULL;
//_p_arr->push_back(new u8[size_count]);
for(int i = 0;i < cnt - 1;i ++) {
_free_page->push_back(temp);
}
//_read_pos = 0;
//_write_pos = 0;
//_readpage_addr = _p_arr->begin()->element;
//_writepage_addr = _readpage_addr;
clear();
}
HttpStream::~HttpStream() {
lock();
for(list<u8*>::node* p = _free_page->begin();p != _free_page->end();p = p->next) {
if (p->element)
delete [] p->element;
}
for(list<u8*>::node* p = _p_arr->begin();p != _p_arr->end();p = p->next) {
delete [] p->element;
}
delete _free_page;
delete _p_arr;
unlock();
pthread_mutex_destroy(&_write_mutex);
}
void HttpStream::lock() {
pthread_mutex_lock(&_write_mutex);
}
void HttpStream::unlock() {
pthread_mutex_unlock(&_write_mutex);
}
int HttpStream::read(u8* buf,int len) {
int read_len = 0;
int span = 0;
lock();
while(len) {
span = (_readpage_addr == _writepage_addr ? _write_pos : _page_size) - _read_pos;
span = span > len ? len:span;
if (span <= 0)
{
if(_readpage_addr == _writepage_addr)
break;
_read_pos = 0;
memset(_readpage_addr,0,_page_size);
_free_page->push_back(_readpage_addr);
_p_arr->erase(0);
_readpage_addr = _p_arr->begin()->element;
continue;
}
memcpy(buf,_readpage_addr + _read_pos,span);
_read_pos += span;
read_len += span;
buf += span;
len -= span;
}
unlock();
return read_len;
}
int HttpStream::readline(u8* buf,int len) {
char* p = NULL;
char* end ;
int read_size = 1;
lock();
for(list<u8*>::node* p_node = _p_arr->begin();p_node != _p_arr->end();p_node = p_node->next) {
p = (char*)p_node->element + (p_node->element == _readpage_addr ?_read_pos:0);
end = (char*)p_node->element + (p_node->element == _writepage_addr ?_write_pos:_page_size);
while(p < end&&*p != '\n')p++;
read_size += p - ((char*)p_node->element + (p_node->element == _readpage_addr ?_read_pos:0));
if(read_size > len) {
unlock();
return -2;
}
if(p < end)
break;
}
unlock();
if (p&&*p != '\n') {
return -1;
}
return read(buf,read_size);
}
int HttpStream::write(const u8* wbuf,int len,bool blocked) {
int write_len = 0;
int span;
lock();
while (len > 0)
{
span = _page_size - _write_pos;
if (span <= 0)
{
if(blocked) {
while (!_free_page->getSize()) {
unlock();
#ifdef SLSERVER_WIN32
Sleep(50);
#elif defined(SLSERVER_LINUX)
usleep(50);
#endif
lock();
}
}else if(!_free_page->getSize())
break;
_writepage_addr = _free_page->begin()->element;
if (_writepage_addr == NULL)
_writepage_addr = new u8[_page_size];
_free_page->erase(0);
_p_arr->push_back(_writepage_addr);
_write_pos = 0;
}
span = span > len ? len:span;
memcpy(_writepage_addr+_write_pos,wbuf,span);
_write_pos += span;
write_len += span;
wbuf += span;
len -= span;
}
unlock();
return write_len;
}
int HttpStream::left() {
lock();
int ret = _free_page->getSize()*_page_size + _page_size - _write_pos;
unlock();
return ret;
}
void HttpStream::setDown(bool v)
{
lock();
_isDown = v;
unlock();
}
bool HttpStream::getDown()
{
return _isDown;
}
void HttpStream::clear() {
lock();
for(list<u8*>::node* p = _p_arr->begin();p != _p_arr->end();p = p->next) {
_free_page->push_front(p->element);
}
_writepage_addr = _free_page->begin()->element;
if (_writepage_addr == NULL)
_writepage_addr = new u8[_page_size];
_free_page->erase(0);
_p_arr->push_back(_writepage_addr);
_readpage_addr = _writepage_addr;
_read_pos = _write_pos = 0;
unlock();
}
void HttpStream::alloc_new_page( int cnt )
{
u8* temp = NULL;
lock();
for(int i = 0;i < cnt;i ++) {
_free_page->push_back(temp);
}
unlock();
}
int HttpStream::skip( int len )
{
int read_len = 0;
int span = 0;
lock();
while(len) {
span = (_readpage_addr == _writepage_addr ? _write_pos : _page_size) - _read_pos;
span = span > len ? len:span;
if (span <= 0)
{
if(_readpage_addr == _writepage_addr)
break;
_read_pos = 0;
memset(_readpage_addr,0,_page_size);
_free_page->push_back(_readpage_addr);
_p_arr->erase(0);
_readpage_addr = _p_arr->begin()->element;
continue;
}
_read_pos += span;
read_len += span;
len -= span;
}
unlock();
return read_len;
}
int HttpStream::size() {
lock();
int ret = _p_arr->getSize()*_page_size + _write_pos;
unlock();
return ret;
}