-: 0:Source:/home/MPI/testing/mpich2/mpich2/src/mpi/spawn/comm_join.c
-: 0:Graph:comm_join.gcno
-: 0:Data:comm_join.gcda
-: 0:Runs:511
-: 0:Programs:137
-: 1:/* -*- Mode: C; c-basic-offset:4 ; -*- */
-: 2:/*
-: 3: *
-: 4: * (C) 2001 by Argonne National Laboratory.
-: 5: * See COPYRIGHT in top-level directory.
-: 6: */
-: 7:
-: 8:#include "mpiimpl.h"
-: 9:
-: 10:/* -- Begin Profiling Symbol Block for routine MPI_Comm_join */
-: 11:#if defined(HAVE_PRAGMA_WEAK)
-: 12:#pragma weak MPI_Comm_join = PMPI_Comm_join
-: 13:#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
-: 14:#pragma _HP_SECONDARY_DEF PMPI_Comm_join MPI_Comm_join
-: 15:#elif defined(HAVE_PRAGMA_CRI_DUP)
-: 16:#pragma _CRI duplicate MPI_Comm_join as PMPI_Comm_join
-: 17:#endif
-: 18:/* -- End Profiling Symbol Block */
-: 19:
-: 20:/* Prototypes for local functions */
-: 21:PMPI_LOCAL int MPIR_fd_send(int, void *, int);
-: 22:PMPI_LOCAL int MPIR_fd_recv(int, void *, int);
-: 23:
-: 24:/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build
-: 25: the MPI routines */
-: 26:#ifndef MPICH_MPI_FROM_PMPI
-: 27:#undef MPI_Comm_join
-: 28:#define MPI_Comm_join PMPI_Comm_join
-: 29:
-: 30:#ifdef HAVE_ERRNO_H
-: 31:#include <errno.h> /* needed for read/write error codes */
-: 32:#endif
-: 33:
-: 34:#ifdef HAVE_WINDOWS_H
-: 35:#define SOCKET_EINTR WSAEINTR
-: 36:#else
-: 37:#ifdef HAVE_SYS_SOCKET_H
-: 38:#include <sys/socket.h>
-: 39:#endif
-: 40:#define SOCKET_EINTR EINTR
-: 41:#endif
-: 42:
-: 43:PMPI_LOCAL int MPIR_fd_send(int fd, void *buffer, int length)
2: 44:{
-: 45: int result, num_bytes;
-: 46:
6: 47: while (length)
-: 48: {
2: 49: num_bytes = send(fd, buffer, length, 0);
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2: 65: length -= num_bytes;
2: 66: buffer = (char*)buffer + num_bytes;
-: 67: }
-: 68: }
2: 69: return 0;
-: 70:}
-: 71:
-: 72:PMPI_LOCAL int MPIR_fd_recv(int fd, void *buffer, int length)
2: 73:{
-: 74: int result, num_bytes;
-: 75:
6: 76: while (length)
-: 77: {
2: 78: num_bytes = recv(fd, buffer, length, 0);
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2: 94: length -= num_bytes;
2: 95: buffer = (char*)buffer + num_bytes;
-: 96: }
-: 97: }
2: 98: return 0;
-: 99:}
-: 100:
-: 101:#endif
-: 102:
-: 103:#undef FUNCNAME
-: 104:#define FUNCNAME MPI_Comm_join
-: 105:
-: 106:/*@
-: 107: MPI_Comm_join - Create a communicator by joining two processes connected by
-: 108: a socket.
-: 109:
-: 110: Input Parameter:
-: 111:. fd - socket file descriptor
-: 112:
-: 113: Output Parameter:
-: 114:. intercomm - new intercommunicator (handle)
-: 115:
-: 116: Notes:
-: 117: The socket must be quiescent before 'MPI_COMM_JOIN' is called and after
-: 118: 'MPI_COMM_JOIN' returns. More specifically, on entry to 'MPI_COMM_JOIN', a
-: 119: read on the socket will not read any data that was written to the socket
-: 120: before the remote process called 'MPI_COMM_JOIN'.
-: 121:
-: 122:.N ThreadSafe
-: 123:
-: 124:.N Fortran
-: 125:
-: 126:.N Errors
-: 127:.N MPI_SUCCESS
-: 128:.N MPI_ERR_ARG
-: 129:@*/
-: 130:int MPI_Comm_join(int fd, MPI_Comm *intercomm)
2: 131:{
-: 132: static const char FCNAME[] = "MPI_Comm_join";
2: 133: int mpi_errno = MPI_SUCCESS, err;
-: 134: char *local_port, *remote_port;
2: 135: MPIU_THREADPRIV_DECL;
2: 136: MPIU_CHKLMEM_DECL(2);
-: 137: MPID_MPI_STATE_DECL(MPID_STATE_MPI_COMM_JOIN);
-: 138:
2: 139: MPIR_ERRTEST_INITIALIZED_ORDIE();
-: 140:
2: 141: MPIU_THREAD_CS_ENTER(ALLFUNC,);
-: 142: MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_COMM_JOIN);
-: 143:
-: 144: /* ... body of routine ... */
-: 145:
2: 146: MPIU_THREADPRIV_GET;
-: 147: /* Set the nest incr here so that we can jump to fn_fail and
-: 148: call nest_decr without worry */
2: 149: MPIR_Nest_incr();
-: 150:
2: 151: MPIU_CHKLMEM_MALLOC(local_port, char *, MPI_MAX_PORT_NAME, mpi_errno, "local port name");
4: 152: MPIU_CHKLMEM_MALLOC(remote_port, char *, MPI_MAX_PORT_NAME, mpi_errno, "remote port name");
-: 153:
2: 154: mpi_errno = NMPI_Open_port(MPI_INFO_NULL, local_port);
2: 155: MPIU_ERR_CHKANDJUMP((mpi_errno != MPI_SUCCESS), mpi_errno, MPI_ERR_OTHER, "**openportfailed");
-: 156:
2: 157: err = MPIR_fd_send(fd, local_port, MPI_MAX_PORT_NAME);
2: 158: MPIU_ERR_CHKANDJUMP1((err != 0), mpi_errno, MPI_ERR_INTERN, "**join_send", "**join_send %d", err);
-: 159:
2: 160: err = MPIR_fd_recv(fd, remote_port, MPI_MAX_PORT_NAME);
2: 161: MPIU_ERR_CHKANDJUMP1((err != 0), mpi_errno, MPI_ERR_INTERN, "**join_recv", "**join_recv %d", err);
-: 162:
2: 163: MPIU_ERR_CHKANDJUMP2((strcmp(local_port, remote_port) == 0), mpi_errno, MPI_ERR_INTERN, "**join_portname",
-: 164: "**join_portname %s %s", local_port, remote_port);
-: 165:
2: 166: if (strcmp(local_port, remote_port) < 0) {
1: 167: mpi_errno = NMPI_Comm_accept(local_port, MPI_INFO_NULL, 0,
-: 168: MPI_COMM_SELF, intercomm);
-: 169: }
-: 170: else {
1: 171: mpi_errno = NMPI_Comm_connect(remote_port, MPI_INFO_NULL, 0,
-: 172: MPI_COMM_SELF, intercomm);
-: 173: }
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-: 190: /* --BEGIN ERROR HANDLING-- */
-: 191:# ifdef HAVE_ERROR_CHECKING
-: 192: {
#####: 193: mpi_errno = MPIR_Err_create_code(
-: 194: mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER, "**mpi_comm_join",
-: 195: "**mpi_comm_join %d %p", fd, intercomm);
-: 196: }
-: 197:# endif
#####: 198: mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );
#####: 199: goto fn_exit;
-: 200: /* --END ERROR HANDLING-- */
-: 201:}
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