Sanitize how tracefiles are handled

[simgrid.git] / examples / smpi / replay_multiple / replay_multiple.cpp

diff --git a/examples/smpi/replay_multiple/replay_multiple.cpp b/examples/smpi/replay_multiple/replay_multiple.cpp
new file mode 100644 (file)
index 0000000..771a6e2
--- /dev/null
+++ b/examples/smpi/replay_multiple/replay_multiple.cpp
@@ -0,0 +1,78 @@
+/* Copyright (c) 2009-2021. The SimGrid Team.
+ * All rights reserved.                                                     */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "mpi.h"
+#include "simgrid/engine.h"
+#include "simgrid/s4u/Actor.hpp"
+#include "xbt/replay.hpp"
+#include "xbt/str.h"
+
+#include <stdio.h>
+#include <string.h>
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
+
+static void smpi_replay(int argc, char* argv[])
+{
+  const char* instance_id = argv[1];
+  int rank                = (int)xbt_str_parse_int(argv[2], "Cannot parse rank '%s'");
+  const char* shared_trace =
+      simgrid::s4u::Actor::self()->get_property("tracefile"); // Cannot use properties because this can be nullptr
+  const char* private_trace = argv[3];
+  double start_delay_flops  = 0;
+
+  if (argc > 4) {
+    start_delay_flops = xbt_str_parse_double(argv[4], "Cannot parse start_delay_flops");
+  }
+
+  if (shared_trace != nullptr)
+    xbt_replay_set_tracefile(shared_trace);
+  smpi_replay_run(instance_id, rank, start_delay_flops, private_trace);
+}
+
+int main(int argc, char* argv[])
+{
+  simgrid_init(&argc, argv);
+  SMPI_init();
+
+  xbt_assert(argc > 3,
+             "Usage: %s description_file platform_file deployment_file\n"
+             "\tExample: %s smpi_multiple_apps msg_platform.xml msg_deployment.xml\n",
+             argv[0], argv[0]);
+
+  /*  Simulation setting */
+  simgrid_load_platform(argv[2]);
+
+  /*   Application deployment: read the description file in order to identify instances to launch */
+  FILE* fp = fopen(argv[1], "r");
+  xbt_assert(fp != NULL, "Cannot open %s", argv[1]);
+
+  char line[2048];
+  while (fgets(line, sizeof line, fp)) {
+    xbt_assert(1 + strlen(line) < sizeof line, "input buffer too short (read: %s)", line);
+    xbt_dynar_t elems = xbt_str_split_quoted_in_place(line);
+    xbt_assert(xbt_dynar_length(elems) >= 3, "Not enough elements in the line");
+
+    const char** line_char  = static_cast<const char**>(xbt_dynar_to_array(elems));
+    const char* instance_id = line_char[0];
+    int instance_size       = (int)xbt_str_parse_int(line_char[2], "Invalid size: %s");
+
+    XBT_INFO("Initializing instance %s of size %d", instance_id, instance_size);
+    SMPI_app_instance_register(instance_id, smpi_replay, instance_size);
+
+    xbt_free(line_char);
+  }
+
+  fclose(fp);
+
+  simgrid_load_deployment(argv[3]);
+  simgrid_run();
+
+  XBT_INFO("Simulation time %g", simgrid_get_clock());
+
+  SMPI_finalize();
+  return 0;
+}