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Creation mode better implementation

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This commit is contained in:
paboyle 2017-04-05 02:35:34 +09:00
parent 35da4ece0b
commit 5592f7b8c1
1 changed files with 4 additions and 4 deletions
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8
lib/communicator/Communicator_mpi3.cc
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@ -203,10 +203,10 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
size_t size = CartesianCommunicator::MAX_MPI_SHM_BYTES;
sprintf(shm_name,"/Grid_mpi3_uid%d_shm_%d_%d",getuid(),GroupRank,r);
sprintf(shm_name,"/Grid_mpi3_shm_%d_%d",GroupRank,r);
shm_unlink(shm_name);
int fd=shm_open(shm_name,O_RDWR|O_CREAT,0660);
int fd=shm_open(shm_name,O_RDWR|O_CREAT,0666);
if ( fd < 0 ) { perror("failed shm_open"); assert(0); }
ftruncate(fd, size);
@ -224,9 +224,9 @@ void CartesianCommunicator::Init(int *argc, char ***argv) {
for(int r=0;r<ShmSize;r++){
size_t size = CartesianCommunicator::MAX_MPI_SHM_BYTES ;
sprintf(shm_name,"/Grid_mpi3_uid%d_shm_%d_%d",getuid(),GroupRank,r);
sprintf(shm_name,"/Grid_mpi3_shm_%d_%d",GroupRank,r);
int fd=shm_open(shm_name,O_RDWR,0660);
int fd=shm_open(shm_name,O_RDWR,0666);
if ( fd<0 ) { perror("failed shm_open"); assert(0); }
void * ptr = mmap(NULL,size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);