#include <cfloat> /* DBL_MAX */
#include <dlfcn.h>
#include <fcntl.h>
+#include <fstream>
+
#if not defined(__APPLE__)
#include <link.h>
#endif
-#include <fstream>
+
+#if defined(__APPLE__)
+# include <AvailabilityMacros.h>
+# ifndef MAC_OS_X_VERSION_10_12
+# define MAC_OS_X_VERSION_10_12 101200
+# endif
+# define HAVE_WORKING_MMAP (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_12)
+#elif defined(__FreeBSD__)
+# define HAVE_WORKING_MMAP 0
+#else
+# define HAVE_WORKING_MMAP 1
+#endif
#if HAVE_SENDFILE
#include <sys/sendfile.h>
XBT_DEBUG("Running without smpi_main(); disable smpi/privatization.");
smpi_privatize_global_variables = SmpiPrivStrategies::NONE;
}
-#if defined(__FreeBSD__)
+#if !HAVE_WORKING_MMAP
if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP) {
- XBT_INFO("mmap privatization is broken on FreeBSD, switching to dlopen privatization instead.");
+ XBT_INFO("mmap privatization is broken on this platform, switching to dlopen privatization instead.");
smpi_privatize_global_variables = SmpiPrivStrategies::DLOPEN;
}
#endif
}
#if not defined(__APPLE__)
-static int visit_libs (struct dl_phdr_info *info,
- size_t size, void *data){
+static int visit_libs(struct dl_phdr_info* info, size_t, void* data)
+{
char* libname = (char*)(data);
const char *path = info->dlpi_name;
if(strstr(path, libname)){
}
#endif
-int smpi_main(const char* executable, int argc, char *argv[])
+static void smpi_init_privatization_dlopen(std::string executable)
+{
+ // Prepare the copy of the binary (get its size)
+ struct stat fdin_stat;
+ stat(executable.c_str(), &fdin_stat);
+ off_t fdin_size = fdin_stat.st_size;
+ static std::size_t rank = 0;
+
+ std::string libnames = simgrid::config::get_value<std::string>("smpi/privatize-libs");
+ if (not libnames.empty()) {
+ // split option
+ std::vector<std::string> privatize_libs;
+ boost::split(privatize_libs, libnames, boost::is_any_of(";"));
+
+ for (auto const& libname : privatize_libs) {
+ // load the library once to add it to the local libs, to get the absolute path
+ void* libhandle = dlopen(libname.c_str(), RTLD_LAZY);
+ // get library name from path
+ char fullpath[512] = {'\0'};
+ strcpy(fullpath, libname.c_str());
+#if not defined(__APPLE__)
+ int ret = dl_iterate_phdr(visit_libs, fullpath);
+ if (ret == 0)
+ xbt_die("Can't find a linked %s - check the setting you gave to smpi/privatize-libs", fullpath);
+ else
+ XBT_DEBUG("Extra lib to privatize found : %s", fullpath);
+#else
+ xbt_die("smpi/privatize-libs is not (yet) compatible with OSX");
+#endif
+ privatize_libs_paths.push_back(fullpath);
+ dlclose(libhandle);
+ }
+ }
+
+ simix_global->default_function = [executable, fdin_size](std::vector<std::string> args) {
+ return std::function<void()>([executable, fdin_size, args] {
+
+ // Copy the dynamic library:
+ std::string target_executable =
+ executable + "_" + std::to_string(getpid()) + "_" + std::to_string(rank) + ".so";
+
+ smpi_copy_file(executable, target_executable, fdin_size);
+ // if smpi/privatize-libs is set, duplicate pointed lib and link each executable copy to a different one.
+ std::string target_lib;
+ for (auto const& libpath : privatize_libs_paths) {
+ // if we were given a full path, strip it
+ size_t index = libpath.find_last_of("/\\");
+ std::string libname;
+ if (index != std::string::npos)
+ libname = libpath.substr(index + 1);
+
+ if (not libname.empty()) {
+ // load the library to add it to the local libs, to get the absolute path
+ struct stat fdin_stat2;
+ stat(libpath.c_str(), &fdin_stat2);
+ off_t fdin_size2 = fdin_stat2.st_size;
+
+ // Copy the dynamic library, the new name must be the same length as the old one
+ // just replace the name with 7 digits for the rank and the rest of the name.
+ unsigned int pad = 7;
+ if (libname.length() < pad)
+ pad = libname.length();
+ target_lib =
+ std::string(pad - std::to_string(rank).length(), '0') + std::to_string(rank) + libname.substr(pad);
+ XBT_DEBUG("copy lib %s to %s, with size %lld", libpath.c_str(), target_lib.c_str(), (long long)fdin_size2);
+ smpi_copy_file(libpath, target_lib, fdin_size2);
+
+ std::string sedcommand = "sed -i -e 's/" + libname + "/" + target_lib + "/g' " + target_executable;
+ int ret = system(sedcommand.c_str());
+ if (ret != 0)
+ xbt_die("error while applying sed command %s \n", sedcommand.c_str());
+ }
+ }
+
+ rank++;
+ // Load the copy and resolve the entry point:
+ void* handle = dlopen(target_executable.c_str(), RTLD_LAZY | RTLD_LOCAL | RTLD_DEEPBIND);
+ int saved_errno = errno;
+ if (simgrid::config::get_value<bool>("smpi/keep-temps") == false) {
+ unlink(target_executable.c_str());
+ if (not target_lib.empty())
+ unlink(target_lib.c_str());
+ }
+ if (handle == nullptr)
+ xbt_die("dlopen failed: %s (errno: %d -- %s)", dlerror(), saved_errno, strerror(saved_errno));
+ smpi_entry_point_type entry_point = smpi_resolve_function(handle);
+ if (not entry_point)
+ xbt_die("Could not resolve entry point");
+ smpi_run_entry_point(entry_point, args);
+ });
+ };
+}
+
+static void smpi_init_privatization_no_dlopen(std::string executable)
+{
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
+ smpi_prepare_global_memory_segment();
+ // Load the dynamic library and resolve the entry point:
+ void* handle = dlopen(executable.c_str(), RTLD_LAZY | RTLD_LOCAL);
+ if (handle == nullptr)
+ xbt_die("dlopen failed for %s: %s (errno: %d -- %s)", executable.c_str(), dlerror(), errno, strerror(errno));
+ smpi_entry_point_type entry_point = smpi_resolve_function(handle);
+ if (not entry_point)
+ xbt_die("main not found in %s", executable.c_str());
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
+ smpi_backup_global_memory_segment();
+
+ // Execute the same entry point for each simulated process:
+ simix_global->default_function = [entry_point](std::vector<std::string> args) {
+ return std::function<void()>([entry_point, args] { smpi_run_entry_point(entry_point, args); });
+ };
+}
+
+int smpi_main(const char* executable, int argc, char* argv[])
{
srand(SMPI_RAND_SEED);
TRACE_global_init();
SIMIX_global_init(&argc, argv);
- MSG_init(&argc,argv);
+ MSG_init(&argc, argv); // FIXME Remove this MSG call. Once it's removed, we can remove the msg header include as well
SMPI_switch_data_segment = &smpi_switch_data_segment;
SIMIX_comm_set_copy_data_callback(smpi_comm_copy_buffer_callback);
smpi_init_options();
- if (smpi_privatize_global_variables == SmpiPrivStrategies::DLOPEN) {
-
- std::string executable_copy = executable;
-
- // Prepare the copy of the binary (get its size)
- struct stat fdin_stat;
- stat(executable_copy.c_str(), &fdin_stat);
- off_t fdin_size = fdin_stat.st_size;
- static std::size_t rank = 0;
-
-
- std::string libnames = simgrid::config::get_value<std::string>("smpi/privatize-libs");
- if(not libnames.empty()){
- //split option
- std::vector<std::string> privatize_libs;
- boost::split(privatize_libs,libnames, boost::is_any_of(";"));
-
- for (auto const& libname : privatize_libs) {
- //load the library once to add it to the local libs, to get the absolute path
- void* libhandle = dlopen(libname.c_str(), RTLD_LAZY);
- //get library name from path
- char fullpath[512]={'\0'};
- strcpy(fullpath, libname.c_str());
-#if not defined(__APPLE__)
- int ret = dl_iterate_phdr(visit_libs, fullpath);
- if(ret==0)
- xbt_die("Can't find a linked %s - check the setting you gave to smpi/privatize-libs", fullpath);
- else
- XBT_DEBUG("Extra lib to privatize found : %s", fullpath);
-#else
- xbt_die("smpi/privatize-libs is not (yet) compatible with OSX");
-#endif
- privatize_libs_paths.push_back(fullpath);
- dlclose(libhandle);
- }
- }
-
- simix_global->default_function = [executable_copy, fdin_size](std::vector<std::string> args) {
- return std::function<void()>([executable_copy, fdin_size, args] {
-
- // Copy the dynamic library:
- std::string target_executable = executable_copy
- + "_" + std::to_string(getpid())
- + "_" + std::to_string(rank) + ".so";
-
- smpi_copy_file(executable_copy, target_executable, fdin_size);
- //if smpi/privatize-libs is set, duplicate pointed lib and link each executable copy to a different one.
- std::string target_lib;
- for (auto const& libpath : privatize_libs_paths){
- //if we were given a full path, strip it
- size_t index = libpath.find_last_of("/\\");
- std::string libname;
- if(index!=std::string::npos)
- libname=libpath.substr(index+1);
-
- if(not libname.empty()){
- //load the library to add it to the local libs, to get the absolute path
- struct stat fdin_stat2;
- stat(libpath.c_str(), &fdin_stat2);
- off_t fdin_size2 = fdin_stat2.st_size;
-
- // Copy the dynamic library, the new name must be the same length as the old one
- // just replace the name with 7 digits for the rank and the rest of the name.
- unsigned int pad=7;
- if(libname.length()<pad)
- pad=libname.length();
- target_lib = std::string(pad - std::to_string(rank).length(), '0')
- +std::to_string(rank)+libname.substr(pad);
- XBT_DEBUG("copy lib %s to %s, with size %lld", libpath.c_str(), target_lib.c_str(), (long long)fdin_size2);
- smpi_copy_file(libpath, target_lib, fdin_size2);
-
- std::string sedcommand = "sed -i -e 's/"+libname+"/"+target_lib+"/g' "+target_executable;
- int ret = system(sedcommand.c_str());
- if(ret!=0) xbt_die ("error while applying sed command %s \n", sedcommand.c_str());
- }
- }
-
- rank++;
- // Load the copy and resolve the entry point:
- void* handle = dlopen(target_executable.c_str(), RTLD_LAZY | RTLD_LOCAL | RTLD_DEEPBIND);
- int saved_errno = errno;
- if (simgrid::config::get_value<bool>("smpi/keep-temps") == false){
- unlink(target_executable.c_str());
- if(not target_lib.empty())
- unlink(target_lib.c_str());
- }
- if (handle == nullptr)
- xbt_die("dlopen failed: %s (errno: %d -- %s)", dlerror(), saved_errno, strerror(saved_errno));
- smpi_entry_point_type entry_point = smpi_resolve_function(handle);
- if (not entry_point)
- xbt_die("Could not resolve entry point");
- smpi_run_entry_point(entry_point, args);
- });
- };
- }
- else {
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
- smpi_prepare_global_memory_segment();
- // Load the dynamic library and resolve the entry point:
- void* handle = dlopen(executable, RTLD_LAZY | RTLD_LOCAL);
- if (handle == nullptr)
- xbt_die("dlopen failed for %s: %s (errno: %d -- %s)", executable, dlerror(), errno, strerror(errno));
- smpi_entry_point_type entry_point = smpi_resolve_function(handle);
- if (not entry_point)
- xbt_die("main not found in %s", executable);
- if (smpi_privatize_global_variables == SmpiPrivStrategies::MMAP)
- smpi_backup_global_memory_segment();
-
- // Execute the same entry point for each simulated process:
- simix_global->default_function = [entry_point](std::vector<std::string> args) {
- return std::function<void()>([entry_point, args] {
- smpi_run_entry_point(entry_point, args);
- });
- };
- }
+ if (smpi_privatize_global_variables == SmpiPrivStrategies::DLOPEN)
+ smpi_init_privatization_dlopen(executable);
+ else
+ smpi_init_privatization_no_dlopen(executable);
SMPI_init();
SIMIX_launch_application(argv[2]);
