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typedef struct Chan Chan;
typedef struct Ctxt Ctxt;
typedef struct Fdbuf Fdbuf;
typedef struct Fdmsg Fdmsg;
typedef struct Thread Thread;
struct Ctxt
{
Label label; /* label should be (d)word aligned */
void *stk;
};
struct Fdbuf
{
Lock lk;
int fd;
int dead;
Fdmsg *m;
Fdmsg **em;
Thread *t;
};
Chan* _chan(int);
#define chan(T) _chan(sizeof(*(T*)0))
void closefdbuf(Fdbuf*);
void gotolabel(Label*);
Fdbuf* openfdbuf(int);
void _fdbufwatch(Fdbuf*);
void initctxt(Ctxt*, void(*)(void*), void*);
int readfdbuf(Fdbuf*, void*, int);
int readnfdbuf(Fdbuf*, void*, int);
void recv(Chan*, void*);
void* recvp(Chan*);
ulong recvul(Chan*);
void send(Chan*, void*);
void sendp(Chan*, void*);
void sendul(Chan*, ulong);
int setlabel(Label*);
void threadcreate(void(*)(void*), void*);
void** threaddata(void);
void threadexit(void);
void threadready(Thread*);
void threadsleep(void);
void yield(void);
extern Thread* curthread;
extern Label mainlabel;
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