source: libcfa/src/concurrency/clib/cfathread.cfa @ a1538cd

arm-ehjacob/cs343-translationnew-ast-unique-expr
Last change on this file since a1538cd was a1538cd, checked in by Thierry Delisle <tdelisle@…>, 8 months ago

Implemented part of the same C api for threads as libfibre.

  • Property mode set to 100644
File size: 7.2 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// clib/cfathread.cfa --
8//
9// Author           : Thierry Delisle
10// Created On       : Tue Sep 22 15:31:20 2020
11// Last Modified By :
12// Last Modified On :
13// Update Count     :
14//
15
16#include "fstream.hfa"
17#include "locks.hfa"
18#include "kernel.hfa"
19#include "thread.hfa"
20#include "time.hfa"
21
22#include "cfathread.h"
23
24struct cfathread_object {
25        $thread self;
26        void * (*themain)( void * );
27        void * arg;
28        void * ret;
29};
30void main(cfathread_object & this);
31void ^?{}(cfathread_object & mutex this);
32
33static inline $thread * get_thread( cfathread_object & this ) { return &this.self; }
34
35typedef ThreadCancelled(cfathread_object) cfathread_exception;
36typedef ThreadCancelled_vtable(cfathread_object) cfathread_vtable;
37
38void defaultResumptionHandler(ThreadCancelled(cfathread_object) & except) {
39        abort | "A thread was cancelled";
40}
41
42cfathread_vtable _cfathread_vtable_instance;
43
44cfathread_vtable const & get_exception_vtable(cfathread_exception *) {
45        return _cfathread_vtable_instance;
46}
47
48static void ?{}( cfathread_object & this, cluster & cl, void *(*themain)( void * ), void * arg ) {
49        this.themain = themain;
50        this.arg = arg;
51        ((thread&)this){"C-thread", cl};
52        __thrd_start(this, main);
53}
54
55void ^?{}(cfathread_object & mutex this) {
56        ^(this.self){};
57}
58
59void main( cfathread_object & this ) {
60        __attribute__((unused)) void * const thrd_obj = (void*)&this;
61        __attribute__((unused)) void * const thrd_hdl = (void*)active_thread();
62        /* paranoid */ verify( thrd_obj == thrd_hdl );
63
64        this.ret = this.themain( this.arg );
65}
66
67processor * procs = 0p;
68int proc_cnt = 1;
69
70extern "C" {
71        int cfathread_cluster_create(cfathread_cluster_t * cl) __attribute__((nonnull(1))) {
72                *cl = new();
73                return 0;
74        }
75
76        cfathread_cluster_t cfathread_cluster_self(void) {
77                return active_cluster();
78        }
79
80        int cfathread_cluster_add_worker(cfathread_cluster_t cl, pthread_t* tid, void (*init_routine) (void *), void * arg) {
81                // processor * proc = new("C-processor", *cl, init_routine, arg);
82                processor * proc = alloc();
83                (*proc){ "C-processor", *cl, init_routine, arg };
84                if(tid) *tid = proc->kernel_thread;
85                return 0;
86        }
87
88        int cfathread_cluster_pause (cfathread_cluster_t) {
89                abort | "Pausing clusters is not supported";
90                exit(1);
91        }
92
93        int cfathread_cluster_resume(cfathread_cluster_t) {
94                abort | "Resuming clusters is not supported";
95                exit(1);
96        }
97
98        //--------------------
99        // Thread attributes
100        int cfathread_attr_init(cfathread_attr_t *attr) __attribute__((nonnull (1))) {
101                attr->cl = active_cluster();
102                return 0;
103        }
104
105        //--------------------
106        // Thread
107        int cfathread_create( cfathread_t * handle, cfathread_attr_t * attr, void *(*main)( void * ), void * arg ) __attribute__((nonnull (1))) {
108                cluster * cl = attr ? attr->cl : active_cluster();
109                cfathread_t thrd = alloc();
110                (*thrd){ *cl, main, arg };
111                *handle = thrd;
112                return 0;
113        }
114
115        int cfathread_join( cfathread_t thrd, void ** retval ) {
116                void * ret = join( *thrd ).ret;
117                delete( thrd );
118                if(retval) {
119                        *retval = ret;
120                }
121                return 0;
122        }
123
124        cfathread_t cfathread_self(void) {
125                return (cfathread_t)active_thread();
126        }
127
128        int cfathread_usleep(useconds_t usecs) {
129                sleep(usecs`us);
130                return 0;
131        }
132
133        int cfathread_sleep(unsigned int secs) {
134                sleep(secs`s);
135                return 0;
136        }
137
138        void cfathread_park( void ) {
139                park();
140        }
141
142        void cfathread_unpark( cfathread_t thrd ) {
143                unpark( *thrd );
144        }
145
146        void cfathread_yield( void ) {
147                yield();
148        }
149
150        typedef struct cfathread_mutex * cfathread_mutex_t;
151
152        //--------------------
153        // Mutex
154        struct cfathread_mutex {
155                single_acquisition_lock impl;
156        };
157        int cfathread_mutex_init(cfathread_mutex_t *restrict mut, const cfathread_mutexattr_t *restrict) __attribute__((nonnull (1))) { *mut = new(); return 0; }
158        int cfathread_mutex_destroy(cfathread_mutex_t *mut) __attribute__((nonnull (1))) { delete( *mut ); return 0; }
159        int cfathread_mutex_lock   (cfathread_mutex_t *mut) __attribute__((nonnull (1))) { lock    ( (*mut)->impl ); return 0; }
160        int cfathread_mutex_trylock(cfathread_mutex_t *mut) __attribute__((nonnull (1))) { try_lock( (*mut)->impl ); return 0; }
161        int cfathread_mutex_unlock (cfathread_mutex_t *mut) __attribute__((nonnull (1))) { unlock  ( (*mut)->impl ); return 0; }
162
163        //--------------------
164        // Condition
165        struct cfathread_condition {
166                condition_variable(single_acquisition_lock) impl;
167        };
168        int cfathread_cond_init(cfathread_cond_t *restrict cond, const cfathread_condattr_t *restrict) __attribute__((nonnull (1))) { *cond = new(); return 0; }
169        int cfathread_cond_signal(cfathread_cond_t *cond) __attribute__((nonnull (1)))  { notify_one( (*cond)->impl ); return 0; }
170        int cfathread_cond_wait(cfathread_cond_t *restrict cond, cfathread_mutex_t *restrict mut) __attribute__((nonnull (1,2))) { wait( (*cond)->impl, (*mut)->impl ); return 0; }
171        int cfathread_cond_timedwait(cfathread_cond_t *restrict cond, cfathread_mutex_t *restrict mut, const struct timespec *restrict abstime) __attribute__((nonnull (1,2,3))) {
172                Time t = { *abstime };
173                if( wait( (*cond)->impl, (*mut)->impl, t ) ) {
174                        return 0;
175                }
176                errno = ETIMEDOUT;
177                return ETIMEDOUT;
178        }
179}
180
181#include <iofwd.hfa>
182
183extern "C" {
184        #include <unistd.h>
185        #include <sys/types.h>
186        #include <sys/socket.h>
187
188        //--------------------
189        // IO operations
190        int cfathread_socket(int domain, int type, int protocol) {
191                return socket(domain, type, protocol);
192        }
193        int cfathread_bind(int socket, const struct sockaddr *address, socklen_t address_len) {
194                return bind(socket, address, address_len);
195        }
196
197        int cfathread_listen(int socket, int backlog) {
198                return listen(socket, backlog);
199        }
200
201        int cfathread_accept(int socket, struct sockaddr *restrict address, socklen_t *restrict address_len) {
202                return cfa_accept4(socket, address, address_len, 0, CFA_IO_LAZY);
203        }
204
205        int cfathread_connect(int socket, const struct sockaddr *address, socklen_t address_len) {
206                return cfa_connect(socket, address, address_len, CFA_IO_LAZY);
207        }
208
209        int cfathread_dup(int fildes) {
210                return dup(fildes);
211        }
212
213        int cfathread_close(int fildes) {
214                return cfa_close(fildes, CFA_IO_LAZY);
215        }
216
217        ssize_t cfathread_sendmsg(int socket, const struct msghdr *message, int flags) {
218                return cfa_sendmsg(socket, message, flags, CFA_IO_LAZY);
219        }
220
221        ssize_t cfathread_write(int fildes, const void *buf, size_t nbyte) {
222                return cfa_write(fildes, buf, nbyte, CFA_IO_LAZY);
223        }
224
225        ssize_t cfathread_recvfrom(int socket, void *restrict buffer, size_t length, int flags, struct sockaddr *restrict address, socklen_t *restrict address_len)  {
226                struct iovec iov;
227                iov.iov_base = buffer;
228                iov.iov_len = length;
229
230                struct msghdr msg;
231                msg.msg_name = address;
232                msg.msg_namelen = address_len ? (socklen_t)*address_len : (socklen_t)0;
233                msg.msg_iov = &iov;
234                msg.msg_iovlen = 1;
235                msg.msg_control = 0p;
236                msg.msg_controllen = 0;
237
238                ssize_t ret = cfa_recvmsg(socket, &msg, flags, CFA_IO_LAZY);
239
240                if(address_len) *address_len = msg.msg_namelen;
241                return ret;
242        }
243
244        ssize_t cfathread_read(int fildes, void *buf, size_t nbyte) {
245                return cfa_read(fildes, buf, nbyte, CFA_IO_LAZY);
246        }
247
248        void cfathread_suspendFD(int) {
249                abort | "Suspending File Descriptors is not supported";
250        }
251
252        void cfathread_resumeFD (int) {
253                abort | "Resuming File Descriptors is not supported";
254        }
255
256}
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