Mercurial > hg > CbC > CbC_xv6

comparison src/file.cbc @ 113:ef44d384ad9d

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rollback rev 52
author anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Mon, 02 Dec 2019 11:17:04 +0900
parents 239bd73abac6
children 7c200a8328fa
comparison
equal deleted inserted replaced
112:b9df8ea87b42 113:ef44d384ad9d
9 #include "file.h" 9 #include "file.h"
10 #include "spinlock.h" 10 #include "spinlock.h"
11 #include "proc.h" 11 #include "proc.h"
12 12
13 #define __ncode __code 13 #define __ncode __code
14 14 #
15 #interface "SysRead.h"
16
17
18 struct devsw devsw[NDEV]; 15 struct devsw devsw[NDEV];
19 struct cbc_devsw cbc_devsw[NDEV]; 16 struct cbc_devsw cbc_devsw[NDEV];
20 17
21 struct { 18 struct {
22 struct spinlock lock; 19 struct spinlock lock;
24 } ftable; 21 } ftable;
25 22
26 void fileinit (void) 23 void fileinit (void)
27 { 24 {
28 initlock(&ftable.lock, "ftable"); 25 initlock(&ftable.lock, "ftable");
29 }
30
31 SysRead* createFileRead(struct Context* cbc_context) {
32 struct SysRead* sys_read = new SysRead();
33 struct FileRead* file_read = new FileRead();
34 sys_read->sys_read = (union Data*)file_read;
35 file_read->f = NULL;
36 sys_read->num = NULL;
37 sys_read->read = C_readFileRead;
38 sys_read->next = C_nextFileRead;
39 return sys_read;
40 } 26 }
41 27
42 // Allocate a file structure. 28 // Allocate a file structure.
43 struct file* filealloc (void) 29 struct file* filealloc (void)
44 { 30 {
125 f->off += r; 111 f->off += r;
126 iunlock(f->ip); 112 iunlock(f->ip);
127 goto next(r); 113 goto next(r);
128 } 114 }
129 115
130 116 __ncode cbc_fileread (struct file *f, char *addr, int n, __code (*next)(int ret))
131 // Skip: generate_context
132 __code cbc_fileread(struct file *f, char *addr, int n, __code next(int ret, ...))
133 { 117 {
134 if (f->readable == 0) { 118 if (f->readable == 0) {
135 goto next(-1); 119 goto next(-1);
136 } 120 }
137 121
138 if (f->type == FD_PIPE) { 122 if (f->type == FD_PIPE) {
139 piperead(f->pipe, addr, n); 123 goto cbc_piperead(f->pipe, addr, n, next);
140 goto next(-1); 124 goto next(-1);
141 } 125 }
142 126
143 if (f->type == FD_INODE) { 127 if (f->type == FD_INODE) {
144 ilock(f->ip); 128 ilock(f->ip);
236 } 220 }
237 221
238 panic("filewrite"); 222 panic("filewrite");
239 } 223 }
240 224
241 __code readFileRead(__code next(...)) {
242
243 goto next(...);
244 }
245
246 __code nextFileRead(...) {
247
248 }