1 /* Copyright (c) 2014. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
11 #include <simgrid/simix.h>
13 #include "mc_record.h"
17 #include "mc_private.h"
24 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_record, mc,
25 " Logging specific to MC record/replay facility");
27 char* MC_record_path = NULL;
29 void MC_record_replay(mc_record_item_t start, size_t len)
31 MC_wait_for_requests();
32 mc_record_item_t end = start + len;
34 // Choose the recorded simcall and execute it:
35 for (mc_record_item_t item=start;item!=end; ++item) {
37 XBT_DEBUG("Executing %i$%i", item->pid, item->value);
39 if (xbt_dynar_is_empty(simix_global->process_to_run))
40 xbt_die("Unexpected end of application.");
44 smx_process_t process = SIMIX_process_from_PID(item->pid);
46 xbt_die("Unexpected process.");
47 smx_simcall_t simcall = &(process->simcall);
48 if(!simcall || simcall->call == SIMCALL_NONE)
49 xbt_die("No simcall for this process.");
50 if (!MC_request_is_visible(simcall) || !MC_request_is_enabled(simcall))
51 xbt_die("Unexpected simcall.");
53 // Execute the request:
54 SIMIX_simcall_handle(simcall, item->value);
55 MC_wait_for_requests();
59 xbt_dynar_t MC_record_from_string(const char* data)
61 XBT_INFO("path=%s", data);
62 if (!data || !data[0])
65 xbt_dynar_t dynar = xbt_dynar_new(sizeof(s_mc_record_item_t), NULL);
67 const char* current = data;
70 s_mc_record_item_t item = { 0, 0 };
71 int count = sscanf(current, "%u/%u", &item.pid, &item.value);
72 if(count != 2 && count != 1)
74 xbt_dynar_push(dynar, &item);
77 const char* end = strchr(current, ';');
87 xbt_dynar_free(&dynar);
92 char* MC_record_stack_to_string(xbt_fifo_t stack)
94 xbt_fifo_item_t start = xbt_fifo_get_last_item(stack);
97 char* res = (char*) malloc(1 * sizeof(char));
104 FILE* file = open_memstream(&buffer, &size);
106 xbt_fifo_item_t item;
107 for (item = start; item; item = xbt_fifo_get_prev_item(item)) {
109 // Find (pid, value):
110 mc_state_t state = (mc_state_t) xbt_fifo_get_item_content(item);
112 smx_simcall_t saved_req = MC_state_get_executed_request(state, &value);
113 const smx_process_t issuer = MC_smx_simcall_get_issuer(saved_req);
114 const int pid = issuer->pid;
116 // Serialization the (pid, value) pair:
117 const char* sep = (item!=start) ? ";" : "";
119 fprintf(file, "%s%u/%u", sep, pid, value);
121 fprintf(file, "%s%u", sep, pid);
128 void MC_record_dump_path(xbt_fifo_t stack)
130 if (MC_record_is_active()) {
131 char* path = MC_record_stack_to_string(stack);
132 XBT_INFO("Path = %s", path);
138 void MC_record_replay_from_string(const char* path_string)
140 xbt_dynar_t path = MC_record_from_string(path_string);
141 mc_record_item_t start = &xbt_dynar_get_as(path, 0, s_mc_record_item_t);
142 MC_record_replay(start, xbt_dynar_length(path));
143 xbt_dynar_free(&path);
146 void MC_record_replay_init()
148 mc_time = xbt_new0(double, simix_process_maxpid);