协程库学习

协程简介

进程、线程、协程

libco简介

libco是腾讯开源的一个协程库.
主要结构和方法介绍:

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
// co_routine.h

//1.struct
struct stCoRoutine_t;
struct stShareStack_t;

struct stCoRoutineAttr_t
{
int stack_size;
stShareStack_t* share_stack;
stCoRoutineAttr_t()
{
stack_size = 128 * 1024;
share_stack = NULL;
}
}__attribute__ ((packed));

struct stCoEpoll_t;
typedef int (*pfn_co_eventloop_t)(void *);
typedef void *(*pfn_co_routine_t)( void * );

//2.co_routine

//创建一个新协程
int co_create( stCoRoutine_t **co,const stCoRoutineAttr_t *attr,void *(*routine)(void*),void *arg );
//执行一个协程
void co_resume( stCoRoutine_t *co );
//让某个协程yield(让出时间片)
void co_yield( stCoRoutine_t *co );
//让当前协程yield
void co_yield_ct(); //ct = current thread
void co_release( stCoRoutine_t *co );

stCoRoutine_t *co_self();

int co_poll( stCoEpoll_t *ctx,struct pollfd fds[], nfds_t nfds, int timeout_ms );
void co_eventloop( stCoEpoll_t *ctx,pfn_co_eventloop_t pfn,void *arg );

//3.specific

int co_setspecific( pthread_key_t key, const void *value );
void * co_getspecific( pthread_key_t key );

//4.event

stCoEpoll_t * co_get_epoll_ct(); //ct = current thread

//5.hook syscall ( poll/read/write/recv/send/recvfrom/sendto )

void co_enable_hook_sys();
void co_disable_hook_sys();
bool co_is_enable_sys_hook();

//6.sync
struct stCoCond_t;

stCoCond_t *co_cond_alloc();
int co_cond_free( stCoCond_t * cc );

int co_cond_signal( stCoCond_t * );
int co_cond_broadcast( stCoCond_t * );
int co_cond_timedwait( stCoCond_t *,int timeout_ms );

//7.share stack
stShareStack_t* co_alloc_sharestack(int iCount, int iStackSize);

//8.init envlist for hook get/set env
void co_set_env_list( const char *name[],size_t cnt);

void co_log_err( const char *fmt,... );

参考资料