Actual source code: send.c
petsc-3.4.5 2014-06-29
2: #include <petscsys.h>
4: #if defined(PETSC_NEEDS_UTYPE_TYPEDEFS)
5: /* Some systems have inconsistent include files that use but do not
6: ensure that the following definitions are made */
7: typedef unsigned char u_char;
8: typedef unsigned short u_short;
9: typedef unsigned short ushort;
10: typedef unsigned int u_int;
11: typedef unsigned long u_long;
12: #endif
14: #include <errno.h>
15: #include <ctype.h>
16: #if defined(PETSC_HAVE_MACHINE_ENDIAN_H)
17: #include <machine/endian.h>
18: #endif
19: #if defined(PETSC_HAVE_UNISTD_H)
20: #include <unistd.h>
21: #endif
22: #if defined(PETSC_HAVE_SYS_SOCKET_H)
23: #include <sys/socket.h>
24: #endif
25: #if defined(PETSC_HAVE_SYS_WAIT_H)
26: #include <sys/wait.h>
27: #endif
28: #if defined(PETSC_HAVE_NETINET_IN_H)
29: #include <netinet/in.h>
30: #endif
31: #if defined(PETSC_HAVE_NETDB_H)
32: #include <netdb.h>
33: #endif
34: #if defined(PETSC_HAVE_FCNTL_H)
35: #include <fcntl.h>
36: #endif
37: #if defined(PETSC_HAVE_IO_H)
38: #include <io.h>
39: #endif
40: #if defined(PETSC_HAVE_WINSOCK2_H)
41: #include <Winsock2.h>
42: #endif
43: #include <sys/stat.h>
44: #include <../src/sys/classes/viewer/impls/socket/socket.h>
46: #if defined(PETSC_NEED_CLOSE_PROTO)
47: PETSC_EXTERN int close(int);
48: #endif
49: #if defined(PETSC_NEED_SOCKET_PROTO)
50: PETSC_EXTERN int socket(int,int,int);
51: #endif
52: #if defined(PETSC_NEED_SLEEP_PROTO)
53: PETSC_EXTERN int sleep(unsigned);
54: #endif
55: #if defined(PETSC_NEED_CONNECT_PROTO)
56: PETSC_EXTERN int connect(int,struct sockaddr*,int);
57: #endif
59: /*--------------------------------------------------------------*/
62: static PetscErrorCode PetscViewerDestroy_Socket(PetscViewer viewer)
63: {
64: PetscViewer_Socket *vmatlab = (PetscViewer_Socket*)viewer->data;
65: PetscErrorCode ierr;
68: if (vmatlab->port) {
69: #if defined(PETSC_HAVE_CLOSESOCKET)
70: closesocket(vmatlab->port);
71: #else
72: close(vmatlab->port);
73: #endif
74: if (ierr) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"System error closing socket");
75: }
76: PetscFree(vmatlab);
77: return(0);
78: }
80: /*--------------------------------------------------------------*/
83: /*
84: PetscSocketOpen - handles connected to an open port where someone is waiting.
86: .seealso: PetscSocketListen(), PetscSocketEstablish()
87: */
88: PetscErrorCode PetscOpenSocket(char *hostname,int portnum,int *t)
89: {
90: struct sockaddr_in sa;
91: struct hostent *hp;
92: int s = 0;
93: PetscErrorCode ierr;
94: PetscBool flg = PETSC_TRUE;
97: if (!(hp=gethostbyname(hostname))) {
98: perror("SEND: error gethostbyname: ");
99: SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_SYS,"system error open connection to %s",hostname);
100: }
101: PetscMemzero(&sa,sizeof(sa));
102: PetscMemcpy(&sa.sin_addr,hp->h_addr_list[0],hp->h_length);
104: sa.sin_family = hp->h_addrtype;
105: sa.sin_port = htons((u_short) portnum);
106: while (flg) {
107: if ((s=socket(hp->h_addrtype,SOCK_STREAM,0)) < 0) {
108: perror("SEND: error socket"); SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"system error");
109: }
110: if (connect(s,(struct sockaddr*)&sa,sizeof(sa)) < 0) {
111: #if defined(PETSC_HAVE_WSAGETLASTERROR)
112: WSAGetLastError();
113: if (ierr == WSAEADDRINUSE) (*PetscErrorPrintf)("SEND: address is in use\n");
114: else if (ierr == WSAEALREADY) (*PetscErrorPrintf)("SEND: socket is non-blocking \n");
115: else if (ierr == WSAEISCONN) {
116: (*PetscErrorPrintf)("SEND: socket already connected\n");
117: Sleep((unsigned) 1);
118: } else if (ierr == WSAECONNREFUSED) {
119: /* (*PetscErrorPrintf)("SEND: forcefully rejected\n"); */
120: Sleep((unsigned) 1);
121: } else {
122: perror(NULL); SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"system error");
123: }
124: #else
125: if (errno == EADDRINUSE) (*PetscErrorPrintf)("SEND: address is in use\n");
126: else if (errno == EALREADY) (*PetscErrorPrintf)("SEND: socket is non-blocking \n");
127: else if (errno == EISCONN) {
128: (*PetscErrorPrintf)("SEND: socket already connected\n");
129: sleep((unsigned) 1);
130: } else if (errno == ECONNREFUSED) {
131: /* (*PetscErrorPrintf)("SEND: forcefully rejected\n"); */
132: PetscInfo(0,"Connection refused in attaching socket, trying again");
133: sleep((unsigned) 1);
134: } else {
135: perror(NULL); SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"system error");
136: }
137: #endif
138: flg = PETSC_TRUE;
139: #if defined(PETSC_HAVE_CLOSESOCKET)
140: closesocket(s);
141: #else
142: close(s);
143: #endif
144: } else flg = PETSC_FALSE;
145: }
146: *t = s;
147: return(0);
148: }
150: #define MAXHOSTNAME 100
153: /*
154: PetscSocketEstablish - starts a listener on a socket
156: .seealso: PetscSocketListen()
157: */
158: PETSC_INTERN PetscErrorCode PetscSocketEstablish(int portnum,int *ss)
159: {
160: char myname[MAXHOSTNAME+1];
161: int s;
162: PetscErrorCode ierr;
163: struct sockaddr_in sa;
164: struct hostent *hp;
167: PetscGetHostName(myname,MAXHOSTNAME);
169: PetscMemzero(&sa,sizeof(struct sockaddr_in));
171: hp = gethostbyname(myname);
172: if (!hp) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"Unable to get hostent information from system");
174: sa.sin_family = hp->h_addrtype;
175: sa.sin_port = htons((u_short)portnum);
177: if ((s = socket(AF_INET,SOCK_STREAM,0)) < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"Error running socket() command");
178: #if defined(PETSC_HAVE_SO_REUSEADDR)
179: {
180: int optval = 1; /* Turn on the option */
181: setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char*)&optval,sizeof(optval));
182: }
183: #endif
185: while (bind(s,(struct sockaddr*)&sa,sizeof(sa)) < 0) {
186: #if defined(PETSC_HAVE_WSAGETLASTERROR)
187: WSAGetLastError();
188: if (ierr != WSAEADDRINUSE) {
189: #else
190: if (errno != EADDRINUSE) {
191: #endif
192: close(s);
193: SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"Error from bind()");
194: }
195: }
196: listen(s,0);
197: *ss = s;
198: return(0);
199: }
203: /*
204: PetscSocketListens - Listens at a socket created with PetscSocketEstablish()
206: .seealso: PetscSocketEstablish()
207: */
208: PETSC_INTERN PetscErrorCode PetscSocketListen(int listenport,int *t)
209: {
210: struct sockaddr_in isa;
211: #if defined(PETSC_HAVE_ACCEPT_SIZE_T)
212: size_t i;
213: #else
214: int i;
215: #endif
218: /* wait for someone to try to connect */
219: i = sizeof(struct sockaddr_in);
220: if ((*t = accept(listenport,(struct sockaddr*)&isa,(socklen_t*)&i)) < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"error from accept()\n");
221: return(0);
222: }
226: /*@C
227: PetscViewerSocketOpen - Opens a connection to a MATLAB or other socket
228: based server.
230: Collective on MPI_Comm
232: Input Parameters:
233: + comm - the MPI communicator
234: . machine - the machine the server is running on,, use NULL for the local machine, use "server" to passively wait for
235: a connection from elsewhere
236: - port - the port to connect to, use PETSC_DEFAULT for the default
238: Output Parameter:
239: . lab - a context to use when communicating with the server
241: Level: intermediate
243: Notes:
244: Most users should employ the following commands to access the
245: MATLAB PetscViewers
246: $
247: $ PetscViewerSocketOpen(MPI_Comm comm, char *machine,int port,PetscViewer &viewer)
248: $ MatView(Mat matrix,PetscViewer viewer)
249: $
250: $ or
251: $
252: $ PetscViewerSocketOpen(MPI_Comm comm,char *machine,int port,PetscViewer &viewer)
253: $ VecView(Vec vector,PetscViewer viewer)
255: Options Database Keys:
256: For use with PETSC_VIEWER_SOCKET_WORLD, PETSC_VIEWER_SOCKET_SELF,
257: PETSC_VIEWER_SOCKET_() or if
258: NULL is passed for machine or PETSC_DEFAULT is passed for port
259: $ -viewer_socket_machine <machine>
260: $ -viewer_socket_port <port>
262: Environmental variables:
263: + PETSC_VIEWER_SOCKET_PORT portnumber
264: - PETSC_VIEWER_SOCKET_MACHINE machine name
266: Currently the only socket client available is MATLAB. See
267: src/dm/da/examples/tests/ex12.c and ex12.m for an example of usage.
269: Notes: The socket viewer is in some sense a subclass of the binary viewer, to read and write to the socket
270: use PetscViewerBinaryRead/Write/GetDescriptor().
272: Concepts: MATLAB^sending data
273: Concepts: sockets^sending data
275: .seealso: MatView(), VecView(), PetscViewerDestroy(), PetscViewerCreate(), PetscViewerSetType(),
276: PetscViewerSocketSetConnection(), PETSC_VIEWER_SOCKET_, PETSC_VIEWER_SOCKET_WORLD,
277: PETSC_VIEWER_SOCKET_SELF, PetscViewerBinaryWrite(), PetscViewerBinaryRead(), PetscViewerBinaryWriteStringArray(),
278: PetscBinaryViewerGetDescriptor()
279: @*/
280: PetscErrorCode PetscViewerSocketOpen(MPI_Comm comm,const char machine[],int port,PetscViewer *lab)
281: {
285: PetscViewerCreate(comm,lab);
286: PetscViewerSetType(*lab,PETSCVIEWERSOCKET);
287: PetscViewerSocketSetConnection(*lab,machine,port);
288: return(0);
289: }
293: static PetscErrorCode PetscViewerSetFromOptions_Socket(PetscViewer v)
294: {
296: PetscInt def = -1;
297: char sdef[256];
298: PetscBool tflg;
301: /*
302: These options are not processed here, they are processed in PetscViewerSocketSetConnection(), they
303: are listed here for the GUI to display
304: */
305: PetscOptionsHead("Socket PetscViewer Options");
306: PetscOptionsGetenv(PetscObjectComm((PetscObject)v),"PETSC_VIEWER_SOCKET_PORT",sdef,16,&tflg);
307: if (tflg) {
308: PetscOptionsStringToInt(sdef,&def);
309: } else def = PETSCSOCKETDEFAULTPORT;
310: PetscOptionsInt("-viewer_socket_port","Port number to use for socket","PetscViewerSocketSetConnection",def,0,0);
312: PetscOptionsString("-viewer_socket_machine","Machine to use for socket","PetscViewerSocketSetConnection",sdef,0,0,0);
313: PetscOptionsGetenv(PetscObjectComm((PetscObject)v),"PETSC_VIEWER_SOCKET_MACHINE",sdef,256,&tflg);
314: if (!tflg) {
315: PetscGetHostName(sdef,256);
316: }
317: PetscOptionsTail();
318: return(0);
319: }
323: PETSC_EXTERN PetscErrorCode PetscViewerCreate_Socket(PetscViewer v)
324: {
325: PetscViewer_Socket *vmatlab;
326: PetscErrorCode ierr;
329: PetscNewLog(v,PetscViewer_Socket,&vmatlab);
330: vmatlab->port = 0;
331: v->data = (void*)vmatlab;
332: v->ops->destroy = PetscViewerDestroy_Socket;
333: v->ops->flush = 0;
334: v->ops->setfromoptions = PetscViewerSetFromOptions_Socket;
336: /* lie and say this is a binary viewer; then all the XXXView_Binary() methods will work correctly on it */
337: PetscObjectChangeTypeName((PetscObject)v,PETSCVIEWERBINARY);
338: return(0);
339: }
343: /*@C
344: PetscViewerSocketSetConnection - Sets the machine and port that a PETSc socket
345: viewer is to use
347: Logically Collective on PetscViewer
349: Input Parameters:
350: + v - viewer to connect
351: . machine - host to connect to, use NULL for the local machine,use "server" to passively wait for
352: a connection from elsewhere
353: - port - the port on the machine one is connecting to, use PETSC_DEFAULT for default
355: Level: advanced
357: .seealso: PetscViewerSocketOpen()
358: @*/
359: PetscErrorCode PetscViewerSocketSetConnection(PetscViewer v,const char machine[],int port)
360: {
361: PetscErrorCode ierr;
362: PetscMPIInt rank;
363: char mach[256];
364: PetscBool tflg;
365: PetscViewer_Socket *vmatlab = (PetscViewer_Socket*)v->data;
369: if (port <= 0) {
370: char portn[16];
371: PetscOptionsGetenv(PetscObjectComm((PetscObject)v),"PETSC_VIEWER_SOCKET_PORT",portn,16,&tflg);
372: if (tflg) {
373: PetscInt pport;
374: PetscOptionsStringToInt(portn,&pport);
375: port = (int)pport;
376: } else port = PETSCSOCKETDEFAULTPORT;
377: }
378: if (!machine) {
379: PetscOptionsGetenv(PetscObjectComm((PetscObject)v),"PETSC_VIEWER_SOCKET_MACHINE",mach,256,&tflg);
380: if (!tflg) {
381: PetscGetHostName(mach,256);
382: }
383: } else {
384: PetscStrncpy(mach,machine,256);
385: }
387: MPI_Comm_rank(PetscObjectComm((PetscObject)v),&rank);
388: if (!rank) {
389: PetscStrcmp(mach,"server",&tflg);
390: if (tflg) {
391: int listenport;
392: PetscInfo1(v,"Waiting for connection from socket process on port %D\n",port);
393: PetscSocketEstablish(port,&listenport);
394: PetscSocketListen(listenport,&vmatlab->port);
395: close(listenport);
396: } else {
397: PetscInfo2(v,"Connecting to socket process on port %D machine %s\n",port,mach);
398: PetscOpenSocket(mach,port,&vmatlab->port);
399: }
400: }
401: return(0);
402: }
404: /* ---------------------------------------------------------------------*/
405: /*
406: The variable Petsc_Viewer_Socket_keyval is used to indicate an MPI attribute that
407: is attached to a communicator, in this case the attribute is a PetscViewer.
408: */
409: static PetscMPIInt Petsc_Viewer_Socket_keyval = MPI_KEYVAL_INVALID;
414: /*@C
415: PETSC_VIEWER_SOCKET_ - Creates a socket viewer shared by all processors in a communicator.
417: Collective on MPI_Comm
419: Input Parameter:
420: . comm - the MPI communicator to share the socket PetscViewer
422: Level: intermediate
424: Options Database Keys:
425: For use with the default PETSC_VIEWER_SOCKET_WORLD or if
426: NULL is passed for machine or PETSC_DEFAULT is passed for port
427: $ -viewer_socket_machine <machine>
428: $ -viewer_socket_port <port>
430: Environmental variables:
431: + PETSC_VIEWER_SOCKET_PORT portnumber
432: - PETSC_VIEWER_SOCKET_MACHINE machine name
434: Notes:
435: Unlike almost all other PETSc routines, PetscViewer_SOCKET_ does not return
436: an error code. The socket PetscViewer is usually used in the form
437: $ XXXView(XXX object,PETSC_VIEWER_SOCKET_(comm));
439: Currently the only socket client available is MATLAB. See
440: src/dm/da/examples/tests/ex12.c and ex12.m for an example of usage.
442: Connects to a waiting socket and stays connected until PetscViewerDestroy() is called.
444: Use this for communicating with an interactive MATLAB session, see PETSC_VIEWER_MATLAB_() for communicating with the MATLAB engine.
446: .seealso: PETSC_VIEWER_SOCKET_WORLD, PETSC_VIEWER_SOCKET_SELF, PetscViewerSocketOpen(), PetscViewerCreate(),
447: PetscViewerSocketSetConnection(), PetscViewerDestroy(), PETSC_VIEWER_SOCKET_(), PetscViewerBinaryWrite(), PetscViewerBinaryRead(),
448: PetscViewerBinaryWriteStringArray(), PetscBinaryViewerGetDescriptor(), PETSC_VIEWER_MATLAB_()
449: @*/
450: PetscViewer PETSC_VIEWER_SOCKET_(MPI_Comm comm)
451: {
453: PetscBool flg;
454: PetscViewer viewer;
455: MPI_Comm ncomm;
458: PetscCommDuplicate(comm,&ncomm,NULL);if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
459: if (Petsc_Viewer_Socket_keyval == MPI_KEYVAL_INVALID) {
460: MPI_Keyval_create(MPI_NULL_COPY_FN,MPI_NULL_DELETE_FN,&Petsc_Viewer_Socket_keyval,0);
461: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
462: }
463: MPI_Attr_get(ncomm,Petsc_Viewer_Socket_keyval,(void**)&viewer,(int*)&flg);
464: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
465: if (!flg) { /* PetscViewer not yet created */
466: PetscViewerSocketOpen(ncomm,0,0,&viewer);
467: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
468: PetscObjectRegisterDestroy((PetscObject)viewer);
469: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
470: MPI_Attr_put(ncomm,Petsc_Viewer_Socket_keyval,(void*)viewer);
471: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
472: }
473: PetscCommDestroy(&ncomm);
474: if (ierr) {PetscError(PETSC_COMM_SELF,__LINE__,"PETSC_VIEWER_SOCKET_",__FILE__,__SDIR__,PETSC_ERR_PLIB,PETSC_ERROR_INITIAL," ");return(0);}
475: PetscFunctionReturn(viewer);
476: }