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Fix potential segfault
[simgrid.git] / src / smpi / smpi_global.c
index 2b8c68d..3f91f2e 100644 (file)
@@ -12,8 +12,9 @@
 #include "smpi_mpi_dt_private.h"
 #include "mc/mc.h"
 #include "surf/surf.h"
+#include "simix/smx_private.h"
+#include "simgrid/sg_config.h"
 
-XBT_LOG_NEW_CATEGORY(smpi, "All SMPI categories");
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(smpi_kernel, smpi,
                                 "Logging specific to SMPI (kernel)");
@@ -23,15 +24,23 @@ typedef struct s_smpi_process_data {
   int* argc;
   char*** argv;
   smx_rdv_t mailbox;
+  smx_rdv_t mailbox_small;
   xbt_os_timer_t timer;
   double simulated;
   MPI_Comm comm_self;
+  void *data; /* user data */
+  int initialized;
 } s_smpi_process_data_t;
 
 static smpi_process_data_t *process_data = NULL;
 static int process_count = 0;
 
 MPI_Comm MPI_COMM_WORLD = MPI_COMM_NULL;
+int MPI_UNIVERSE_SIZE;
+
+MPI_Errhandler* MPI_ERRORS_RETURN = NULL;
+MPI_Errhandler* MPI_ERRORS_ARE_FATAL = NULL;
+MPI_Errhandler* MPI_ERRHANDLER_NULL = NULL;
 
 #define MAILBOX_NAME_MAXLEN (5 + sizeof(int) * 2 + 1)
 
@@ -40,6 +49,11 @@ static char* get_mailbox_name(char* str, int index) {
   return str;
 }
 
+static char* get_mailbox_name_small(char* str, int index) {
+  snprintf(str, MAILBOX_NAME_MAXLEN, "small%0*x", (int)(sizeof(int) * 2), index);
+  return str;
+}
+
 void smpi_process_init(int *argc, char ***argv)
 {
   int index;
@@ -59,6 +73,7 @@ void smpi_process_init(int *argc, char ***argv)
     (*argc)--;
     data->argc = argc;
     data->argv = argv;
+    simcall_rdv_set_receiver(data->mailbox_small, proc);// set the process attached to the mailbox
     XBT_DEBUG("<%d> New process in the game: %p", index, proc);
   }
 }
@@ -66,7 +81,7 @@ void smpi_process_init(int *argc, char ***argv)
 void smpi_process_destroy(void)
 {
   int index = smpi_process_index();
-
+  process_data[index]->index=-100;
   XBT_DEBUG("<%d> Process left the game", index);
 }
 
@@ -77,10 +92,39 @@ void smpi_process_finalize(void)
 {
   // wait for all pending asynchronous comms to finish
   while (SIMIX_process_has_pending_comms(SIMIX_process_self())) {
-    simcall_process_sleep(1);
+    simcall_process_sleep(0.01);
   }
 }
 
+/**
+ * @brief Check if a process is finalized
+ */
+int smpi_process_finalized()
+{
+   return (smpi_process_index()==-100);
+  // If finalized, this value has been set to -100;
+}
+
+/**
+ * @brief Check if a process is initialized
+ */
+int smpi_process_initialized(void)
+{
+  int index = smpi_process_index();
+  return((index != -100) && (index!=MPI_UNDEFINED) && (process_data[index]->initialized));
+}
+
+/**
+ * @brief Mark a process as initialized (=MPI_Init called)
+ */
+void smpi_process_mark_as_initialized(void)
+{
+  int index = smpi_process_index();
+  if((index != -100)&& (index!=MPI_UNDEFINED))process_data[index]->initialized=1;
+}
+
+
+#ifdef SMPI_F2C
 int smpi_process_argc(void) {
   smpi_process_data_t data = smpi_process_data();
 
@@ -110,11 +154,12 @@ int smpi_global_size(void) {
    char* value = getenv("SMPI_GLOBAL_SIZE");
 
    if(!value) {
-      fprintf(stderr, "Please set env var SMPI_GLOBAL_SIZE to expected number of processes.\n");
-      abort();
+     fprintf(stderr, "Please set env var SMPI_GLOBAL_SIZE to expected number of processes.\n");
+     xbt_abort();
    }
    return atoi(value);
 }
+#endif
 
 smpi_process_data_t smpi_process_data(void)
 {
@@ -126,6 +171,17 @@ smpi_process_data_t smpi_process_remote_data(int index)
   return process_data[index];
 }
 
+void smpi_process_set_user_data(void *data)
+{
+  smpi_process_data_t process_data = smpi_process_data();
+  process_data->data = data;
+}
+
+void* smpi_process_get_user_data(){
+  smpi_process_data_t process_data = smpi_process_data();
+  return process_data->data;
+}
+
 int smpi_process_count(void)
 {
   return process_count;
@@ -134,8 +190,8 @@ int smpi_process_count(void)
 int smpi_process_index(void)
 {
   smpi_process_data_t data = smpi_process_data();
-
-  return data->index;
+  //return -1 if not initialized
+  return data? data->index : MPI_UNDEFINED;
 }
 
 smx_rdv_t smpi_process_mailbox(void) {
@@ -144,12 +200,25 @@ smx_rdv_t smpi_process_mailbox(void) {
   return data->mailbox;
 }
 
+smx_rdv_t smpi_process_mailbox_small(void) {
+  smpi_process_data_t data = smpi_process_data();
+
+  return data->mailbox_small;
+}
+
 smx_rdv_t smpi_process_remote_mailbox(int index) {
   smpi_process_data_t data = smpi_process_remote_data(index);
 
   return data->mailbox;
 }
 
+
+smx_rdv_t smpi_process_remote_mailbox_small(int index) {
+  smpi_process_data_t data = smpi_process_remote_data(index);
+
+  return data->mailbox_small;
+}
+
 xbt_os_timer_t smpi_process_timer(void)
 {
   smpi_process_data_t data = smpi_process_data();
@@ -157,41 +226,51 @@ xbt_os_timer_t smpi_process_timer(void)
   return data->timer;
 }
 
-void smpi_process_simulated_start(void)
-{
+void smpi_process_simulated_start(void) {
   smpi_process_data_t data = smpi_process_data();
 
   data->simulated = SIMIX_get_clock();
 }
 
-double smpi_process_simulated_elapsed(void)
-{
+double smpi_process_simulated_elapsed(void) {
   smpi_process_data_t data = smpi_process_data();
 
   return SIMIX_get_clock() - data->simulated;
 }
 
-MPI_Comm smpi_process_comm_self(void)
-{
+MPI_Comm smpi_process_comm_self(void) {
   smpi_process_data_t data = smpi_process_data();
 
   return data->comm_self;
 }
 
-void print_request(const char *message, MPI_Request request)
-{
+void print_request(const char *message, MPI_Request request) {
   XBT_DEBUG("%s  request %p  [buf = %p, size = %zu, src = %d, dst = %d, tag = %d, flags = %x]",
          message, request, request->buf, request->size,
          request->src, request->dst, request->tag, request->flags);
 }
 
+static void SMPI_comm_copy_buffer_callback(smx_action_t comm, void* buff, size_t buff_size)
+{
+  XBT_DEBUG("Copy the data over");
+  memcpy(comm->comm.dst_buff, buff, buff_size);
+  if (comm->comm.detached) { // if this is a detached send, the source buffer was duplicated by SMPI sender to make the original buffer available to the application ASAP
+    xbt_free(buff);
+    //It seems that the request is used after the call there this should
+    //be free somewhereelse  but where???
+    //xbt_free(comm->comm.src_data);// inside SMPI the request is keep
+    //inside the user data and should be free 
+    comm->comm.src_buff = NULL;
+  }
+}
+
 void smpi_global_init(void)
 {
   int i;
   MPI_Group group;
   char name[MAILBOX_NAME_MAXLEN];
 
-  SIMIX_comm_set_copy_data_callback(&smpi_comm_copy_data_callback);
+  SIMIX_comm_set_copy_data_callback(&SMPI_comm_copy_buffer_callback);
   process_count = SIMIX_process_count();
   process_data = xbt_new(smpi_process_data_t, process_count);
   for (i = 0; i < process_count; i++) {
@@ -200,13 +279,17 @@ void smpi_global_init(void)
     process_data[i]->argc = NULL;
     process_data[i]->argv = NULL;
     process_data[i]->mailbox = simcall_rdv_create(get_mailbox_name(name, i));
+    process_data[i]->mailbox_small = simcall_rdv_create(get_mailbox_name_small(name, i));
     process_data[i]->timer = xbt_os_timer_new();
     group = smpi_group_new(1);
     process_data[i]->comm_self = smpi_comm_new(group);
+    process_data[i]->initialized =0;
+
     smpi_group_set_mapping(group, i, 0);
   }
   group = smpi_group_new(process_count);
   MPI_COMM_WORLD = smpi_comm_new(group);
+  MPI_UNIVERSE_SIZE = smpi_comm_size(MPI_COMM_WORLD);
   for (i = 0; i < process_count; i++) {
     smpi_group_set_mapping(group, i, i);
   }
@@ -218,16 +301,21 @@ void smpi_global_destroy(void)
   int i;
 
   smpi_bench_destroy();
+  smpi_group_unuse(smpi_comm_group(MPI_COMM_WORLD));
   smpi_comm_destroy(MPI_COMM_WORLD);
   MPI_COMM_WORLD = MPI_COMM_NULL;
   for (i = 0; i < count; i++) {
+    smpi_group_unuse(smpi_comm_group(process_data[i]->comm_self));
     smpi_comm_destroy(process_data[i]->comm_self);
     xbt_os_timer_free(process_data[i]->timer);
     simcall_rdv_destroy(process_data[i]->mailbox);
+    simcall_rdv_destroy(process_data[i]->mailbox_small);
     xbt_free(process_data[i]);
   }
   xbt_free(process_data);
   process_data = NULL;
+
+  smpi_free_static();
 }
 
 /* Fortran specific stuff */
@@ -236,23 +324,44 @@ void smpi_global_destroy(void)
 int __attribute__((weak)) xargc;
 char** __attribute__((weak)) xargv;
 
+#ifndef WIN32
+void __attribute__((weak)) user_main_(){
+  xbt_die("Should not be in this smpi_simulated_main");
+  return;
+}
+int __attribute__((weak)) smpi_simulated_main_(int argc, char** argv) {
+  smpi_process_init(&argc, &argv);
+  user_main_();
+  //xbt_die("Should not be in this smpi_simulated_main");
+  return 0;
+}
+
 int __attribute__((weak)) main(int argc, char** argv) {
-   xargc = argc;
-   xargv = argv;
-   return MAIN__();
+   return smpi_main(smpi_simulated_main_,argc,argv);
 }
 
-int MAIN__(void)
+int __attribute__((weak)) MAIN__(){
+  return smpi_main(smpi_simulated_main_,xargc, xargv);
+};
+#endif
+
+int smpi_main(int (*realmain) (int argc, char *argv[]),int argc, char *argv[])
 {
   srand(SMPI_RAND_SEED);
-
+  
   if(getenv("SMPI_PRETEND_CC") != NULL) {
-       /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the configuration tools */
+  /* Hack to ensure that smpicc can pretend to be a simple compiler. Particularly handy to pass it to the configuration tools */
     return 0;
   }
 
   /* Connect log categories.  See xbt/log.c */
-  XBT_LOG_CONNECT(smpi);
+  XBT_LOG_CONNECT(smpi);  /* Keep this line as soon as possible in this
+                             function: xbt_log_appender_file.c depends on it
+                             DO NOT connect this in XBT or so, or it will be
+                             useless to xbt_log_appender_file.c */
+#ifdef HAVE_TRACING
+  XBT_LOG_CONNECT(instr_smpi);
+#endif
   XBT_LOG_CONNECT(smpi_base);
   XBT_LOG_CONNECT(smpi_bench);
   XBT_LOG_CONNECT(smpi_coll);
@@ -262,22 +371,93 @@ int MAIN__(void)
   XBT_LOG_CONNECT(smpi_mpi);
   XBT_LOG_CONNECT(smpi_mpi_dt);
   XBT_LOG_CONNECT(smpi_pmpi);
+  XBT_LOG_CONNECT(smpi_replay);
+  XBT_LOG_CONNECT(smpi_colls);
 
 #ifdef HAVE_TRACING
-  TRACE_global_init(&xargc, xargv);
+  TRACE_global_init(&argc, argv);
+
+  TRACE_add_start_function(TRACE_smpi_alloc);
+  TRACE_add_end_function(TRACE_smpi_release);
 #endif
 
-  SIMIX_global_init(&xargc, xargv);
+  SIMIX_global_init(&argc, argv);
 
 #ifdef HAVE_TRACING
   TRACE_start();
 #endif
 
   // parse the platform file: get the host list
-  SIMIX_create_environment(xargv[1]);
-
-  SIMIX_function_register_default(smpi_simulated_main);
-  SIMIX_launch_application(xargv[2]);
+  SIMIX_create_environment(argv[1]);
+
+  SIMIX_function_register_default(realmain);
+  SIMIX_launch_application(argv[2]);
+
+  int gather_id = find_coll_description(mpi_coll_gather_description,
+                                           sg_cfg_get_string("smpi/gather"));
+  mpi_coll_gather_fun = (int (*)(void *, int, MPI_Datatype,
+                                   void*, int, MPI_Datatype, int, MPI_Comm))
+                          mpi_coll_gather_description[gather_id].coll;
+
+  int allgather_id = find_coll_description(mpi_coll_allgather_description,
+                                           sg_cfg_get_string("smpi/allgather"));
+  mpi_coll_allgather_fun = (int (*)(void *, int, MPI_Datatype,
+                                   void*, int, MPI_Datatype, MPI_Comm))
+                          mpi_coll_allgather_description[allgather_id].coll;
+
+  int allgatherv_id = find_coll_description(mpi_coll_allgatherv_description,
+                                           sg_cfg_get_string("smpi/allgatherv"));
+  mpi_coll_allgatherv_fun = (int (*)(void *, int, MPI_Datatype,
+                                   void*, int*, int*, MPI_Datatype, MPI_Comm))
+                          mpi_coll_allgatherv_description[allgatherv_id].coll;
+
+  int allreduce_id = find_coll_description(mpi_coll_allreduce_description,
+                                           sg_cfg_get_string("smpi/allreduce"));
+  mpi_coll_allreduce_fun = (int (*)(void *sbuf, void *rbuf, int rcount, \
+                                    MPI_Datatype dtype, MPI_Op op, MPI_Comm comm))
+                          mpi_coll_allreduce_description[allreduce_id].coll;
+
+  int alltoall_id = find_coll_description(mpi_coll_alltoall_description,
+                                          sg_cfg_get_string("smpi/alltoall"));
+  mpi_coll_alltoall_fun = (int (*)(void *, int, MPI_Datatype,
+                                  void*, int, MPI_Datatype, MPI_Comm))
+                         mpi_coll_alltoall_description[alltoall_id].coll;
+
+  int alltoallv_id = find_coll_description(mpi_coll_alltoallv_description,
+                                          sg_cfg_get_string("smpi/alltoallv"));
+  mpi_coll_alltoallv_fun = (int (*)(void *, int*, int*, MPI_Datatype,
+                                   void*, int*, int*, MPI_Datatype, MPI_Comm))
+                         mpi_coll_alltoallv_description[alltoallv_id].coll;
+
+  int bcast_id = find_coll_description(mpi_coll_bcast_description,
+                                          sg_cfg_get_string("smpi/bcast"));
+  mpi_coll_bcast_fun = (int (*)(void *buf, int count, MPI_Datatype datatype, \
+                               int root, MPI_Comm com))
+                      mpi_coll_bcast_description[bcast_id].coll;
+
+  int reduce_id = find_coll_description(mpi_coll_reduce_description,
+                                          sg_cfg_get_string("smpi/reduce"));
+  mpi_coll_reduce_fun = (int (*)(void *buf, void *rbuf, int count, MPI_Datatype datatype, \
+                                 MPI_Op op, int root, MPI_Comm comm))
+                       mpi_coll_reduce_description[reduce_id].coll;
+
+  int reduce_scatter_id = find_coll_description(mpi_coll_reduce_scatter_description,
+                                           sg_cfg_get_string("smpi/reduce_scatter"));
+  mpi_coll_reduce_scatter_fun = (int (*)(void *sbuf, void *rbuf, int *rcounts,\
+                    MPI_Datatype dtype,MPI_Op  op,MPI_Comm  comm))
+                          mpi_coll_reduce_scatter_description[reduce_scatter_id].coll;
+
+  int scatter_id = find_coll_description(mpi_coll_scatter_description,
+                                           sg_cfg_get_string("smpi/scatter"));
+  mpi_coll_scatter_fun = (int (*)(void *sendbuf, int sendcount, MPI_Datatype sendtype,\
+                void *recvbuf, int recvcount, MPI_Datatype recvtype,\
+                int root, MPI_Comm comm))
+                          mpi_coll_scatter_description[scatter_id].coll;
+
+  int barrier_id = find_coll_description(mpi_coll_barrier_description,
+                                           sg_cfg_get_string("smpi/barrier"));
+  mpi_coll_barrier_fun = (int (*)(MPI_Comm comm))
+                          mpi_coll_barrier_description[barrier_id].coll;
 
   smpi_global_init();
 
@@ -285,12 +465,12 @@ int MAIN__(void)
   fflush(stdout);
   fflush(stderr);
 
-  if (MC_IS_ENABLED)
-    MC_modelcheck();
+  if (MC_is_active())
+    MC_modelcheck_safety();
   else
     SIMIX_run();
 
-  if (xbt_cfg_get_int(_surf_cfg_set, "smpi/display_timing"))
+  if (sg_cfg_get_boolean("smpi/display_timing"))
     XBT_INFO("Simulation time: %g seconds.", SIMIX_get_clock());
 
   smpi_global_destroy();
@@ -299,6 +479,5 @@ int MAIN__(void)
   TRACE_end();
 #endif
 
-  SIMIX_clean();
   return 0;
 }