#include "smpi_file.hpp"
#include "smpi_status.hpp"
+#include "simgrid/s4u/Disk.hpp"
+#include "simgrid/s4u/Host.hpp"
#include "simgrid/plugins/file_system.h"
#define FP_SIZE sizeof(MPI_Offset)
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_io, smpi, "Logging specific to SMPI (RMA operations)");
+MPI_Errhandler SMPI_default_File_Errhandler = MPI_ERRORS_RETURN;
+
namespace simgrid{
namespace smpi{
- File::File(MPI_Comm comm, char *filename, int amode, MPI_Info info): comm_(comm), flags_(amode), info_(info) {
- file_= new simgrid::s4u::File(filename, nullptr);
+ File::File(MPI_Comm comm, const char *filename, int amode, MPI_Info info): comm_(comm), flags_(amode), info_(info) {
+ std::string fullname=filename;
+ if (simgrid::s4u::Host::current()->get_disks().empty())
+ xbt_die("SMPI/IO : Trying to open file on a diskless host ! Add one to your platform file");
+
+ size_t found=fullname.find('/');
+ //in case no fullpath is provided ... just pick the first mountpoint.
+ if(found==std::string::npos){
+ auto disk = simgrid::s4u::Host::current()->get_disks().front();
+ std::string mount;
+ if (disk->get_host() != simgrid::s4u::Host::current())
+ mount = disk->extension<simgrid::s4u::FileSystemDiskExt>()->get_mount_point(disk->get_host());
+ else
+ mount = disk->extension<simgrid::s4u::FileSystemDiskExt>()->get_mount_point();
+ XBT_DEBUG("No absolute path given for file opening, use '%s'", mount.c_str());
+ fullname.insert(0, mount);
+ }
+
+ file_= new simgrid::s4u::File(fullname, nullptr);
list_=nullptr;
if (comm_->rank() == 0) {
int size= comm_->size() + FP_SIZE;
list_ = new char[size];
+ errhandler_= SMPI_default_File_Errhandler;
memset(list_, 0, size);
shared_file_pointer_ = new MPI_Offset();
shared_mutex_ = s4u::Mutex::create();
}else{
win_=new Win(list_, 0, 1, MPI_INFO_NULL, comm_);
}
- simgrid::smpi::Colls::bcast(&shared_file_pointer_, 1, MPI_AINT, 0, comm);
- simgrid::smpi::Colls::bcast(&shared_mutex_, 1, MPI_AINT, 0, comm);
+ simgrid::smpi::colls::bcast(&shared_file_pointer_, 1, MPI_AINT, 0, comm);
+ simgrid::smpi::colls::bcast(&shared_mutex_, 1, MPI_AINT, 0, comm);
if(comm_->rank() != 0)
intrusive_ptr_add_ref(&*shared_mutex_);
}
return MPI_SUCCESS;
}
- int File::del(char *filename, MPI_Info info){
+ int File::del(const char* filename, MPI_Info)
+ {
//get the file with MPI_MODE_DELETE_ON_CLOSE and then close it
File* f = new File(MPI_COMM_SELF,filename,MPI_MODE_DELETE_ON_CLOSE|MPI_MODE_RDWR, nullptr);
close(&f);
return MPI_SUCCESS;
}
- int File::read(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
+ int File::read(MPI_File fh, void* /*buf*/, int count, MPI_Datatype datatype, MPI_Status* status)
+ {
//get position first as we may be doing non contiguous reads and it will probably be updated badly
MPI_Offset position = fh->file_->tell();
MPI_Offset movesize = datatype->get_extent()*count;
}
MPI_Offset result;
- simgrid::smpi::Colls::scan(&val, &result, 1, MPI_OFFSET, MPI_SUM, fh->comm_);
+ simgrid::smpi::colls::scan(&val, &result, 1, MPI_OFFSET, MPI_SUM, fh->comm_);
fh->seek(result, MPI_SEEK_SET);
int ret = fh->op_all<simgrid::smpi::File::read>(buf, count, datatype, status);
if(fh->comm_->rank()==fh->comm_->size()-1){
fh->shared_mutex_->unlock();
}
char c;
- simgrid::smpi::Colls::bcast(&c, 1, MPI_BYTE, fh->comm_->size()-1, fh->comm_);
+ simgrid::smpi::colls::bcast(&c, 1, MPI_BYTE, fh->comm_->size() - 1, fh->comm_);
return ret;
}
- int File::write(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
+ int File::write(MPI_File fh, void* /*buf*/, int count, MPI_Datatype datatype, MPI_Status* status)
+ {
//get position first as we may be doing non contiguous reads and it will probably be updated badly
MPI_Offset position = fh->file_->tell();
MPI_Offset movesize = datatype->get_extent()*count;
MPI_Offset writesize = datatype->size()*count;
XBT_DEBUG("Position before write in MPI_File %s : %llu",fh->file_->get_path(),fh->file_->tell());
- MPI_Offset write = fh->file_->write(writesize);
+ MPI_Offset write = fh->file_->write(writesize, 1);
XBT_VERB("Write in MPI_File %s, %lld bytes written, readsize %lld bytes, movesize %lld", fh->file_->get_path(), write, writesize, movesize);
if(writesize!=movesize){
fh->file_->seek(position+movesize, SEEK_SET);
return MPI_SUCCESS;
}
- int File::write_shared(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
+ int File::write_shared(MPI_File fh, const void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
fh->shared_mutex_->lock();
fh->seek(*(fh->shared_file_pointer_),MPI_SEEK_SET);
- write(fh, buf, count, datatype, status);
+ write(fh, const_cast<void*>(buf), count, datatype, status);
*(fh->shared_file_pointer_)=fh->file_->tell();
fh->shared_mutex_->unlock();
return MPI_SUCCESS;
}
- int File::write_ordered(MPI_File fh, void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
+ int File::write_ordered(MPI_File fh, const void *buf, int count, MPI_Datatype datatype, MPI_Status *status){
//0 needs to get the shared pointer value
MPI_Offset val;
if(fh->comm_->rank()==0){
val=count*datatype->size();
}
MPI_Offset result;
- simgrid::smpi::Colls::scan(&val, &result, 1, MPI_OFFSET, MPI_SUM, fh->comm_);
+ simgrid::smpi::colls::scan(&val, &result, 1, MPI_OFFSET, MPI_SUM, fh->comm_);
fh->seek(result, MPI_SEEK_SET);
- int ret = fh->op_all<simgrid::smpi::File::write>(buf, count, datatype, status);
+ int ret = fh->op_all<simgrid::smpi::File::write>(const_cast<void*>(buf), count, datatype, status);
if(fh->comm_->rank()==fh->comm_->size()-1){
fh->shared_mutex_->lock();
*(fh->shared_file_pointer_)=fh->file_->tell();
fh->shared_mutex_->unlock();
}
char c;
- simgrid::smpi::Colls::bcast(&c, 1, MPI_BYTE, fh->comm_->size()-1, fh->comm_);
+ simgrid::smpi::colls::bcast(&c, 1, MPI_BYTE, fh->comm_->size() - 1, fh->comm_);
return ret;
}
int File::sync(){
//no idea
- return simgrid::smpi::Colls::barrier(comm_);
+ return simgrid::smpi::colls::barrier(comm_);
}
MPI_Info File::info(){
MPI_Comm File::comm(){
return comm_;
}
+
+ MPI_Errhandler File::errhandler(){
+ return errhandler_;
+ }
+
+ void File::set_errhandler(MPI_Errhandler errhandler){
+ errhandler_=errhandler;
+ if(errhandler_!= MPI_ERRHANDLER_NULL)
+ errhandler->ref();
+ }
}
}
