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comparison src/impl/file_impl_pipe.cbc @ 170:9b0f4b421288

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tweak
author anatofuz <anatofuz@cr.ie.u-ryukyu.ac.jp>
date Thu, 16 Jan 2020 20:34:18 +0900
parents e0255e66e646
children da4c83ae7ada
comparison
equal deleted inserted replaced
169:e0255e66e646 170:9b0f4b421288
34 file->close = C_closepipe; 34 file->close = C_closepipe;
35 return file; 35 return file;
36 } 36 }
37 __code statpipe(struct pipe* file, struct stat* st, __code next(...)) { 37 __code statpipe(struct pipe* file, struct stat* st, __code next(...)) {
38 38
39 goto next(...); 39 goto next(...);
40 } 40 }
41 41
42 __code readpipe(struct pipe* file, char* addr, int n, __code next(...)) { 42 __code readpipe(struct pipe* file, char* addr, int n, __code next(...)) {
43 acquire(&p->lock); 43 acquire(&p->lock);
44 goto cbc_piperead1(file,addr,n,next); 44 goto cbc_piperead1(file,addr,n,next);
83 83
84 goto next(...); 84 goto next(...);
85 } 85 }
86 86
87 __code closepipe(struct pipe* file,int fd,__code next(...)) { 87 __code closepipe(struct pipe* file,int fd,__code next(...)) {
88 proc->ofile[fd] = 0; 88 proc->ofile[fd] = 0;
89 goto cbc_fileclose(f,next); 89 goto cbc_fileclose(f,next);
90 } 90 }
91 91
92 92
93 __code cbc_fileclose(struct file* file, __code next(...)) { 93 __code cbc_fileclose(struct file* file, __code next(...)) {
94 goto next(); 94 struct file ff;
95 acquire(*ftable.loc)
96
97 if (f->ref < 1) {
98 goto cbc_context->kernel_error->panic("file close");
99 }
100 goto cbc_fileclose2(f,ff,next);
95 } 101 }
102
103 __code cbc_fileclose2(struct file* file, struct file* ff,__code next(...)) {
104 if (--f->ref > 0) {
105 release(&ftable.lock);
106 goto cbc_context->return();
107 }
108 goto cbc_fileclose3(f,ff,next);
109 }
110
111 __code cbc_fileclose3(struct file* file, struct file* ff,__code next(...)) {
112 if (--f->ref > 0) {
113 release(&ftable.lock);
114 goto cbc_context->return();
115 }
116 goto cbc_fileclose3(f,ff,next);
117 }