X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/66b8207784f054d07a21630fd134b327c64365ed..e0559282e9a32c820950e87c49a9dc2e6e705c5c:/src/mc/snapshot/unitTest/mc_snapshot_unit.cpp

diff --git a/src/mc/snapshot/unitTest/mc_snapshot_unit.cpp b/src/mc/snapshot/unitTest/mc_snapshot_unit.cpp
new file mode 100644
index 0000000000..6b8d25e2f7
--- /dev/null
+++ b/src/mc/snapshot/unitTest/mc_snapshot_unit.cpp
@@ -0,0 +1,130 @@
+/*************************************************
+TODO: comment
+*************************************************/
+#define BOOST_TEST_MODULE snapshots
+#define BOOST_TEST_DYN_LINK
+#include <boost/test/unit_test.hpp>
+
+
+// /*******************************/
+// /* GENERATED FILE, DO NOT EDIT */
+// /*******************************/
+// 
+// #include <stdio.h>
+// #include "xbt.h"
+// /*******************************/
+// /* GENERATED FILE, DO NOT EDIT */
+// /*******************************/
+// 
+// #line 180 "mc/mc_snapshot.cpp" 
+
+#include <cstdlib>
+#include <cstring>
+
+#include <sys/mman.h>
+
+#include "src/mc/mc_config.hpp"
+#include "src/mc/mc_mmu.hpp"
+#include "src/mc/mc_private.hpp"
+#include "src/mc/mc_snapshot.hpp"
+
+
+static inline void init_memory(void* mem, size_t size)
+{
+  char* dest = (char*) mem;
+  for (size_t i = 0; i < size; ++i) {
+    dest[i] = rand() & 255;
+  }
+}
+
+static int test_snapshot(bool sparse_checkpoint);
+
+BOOST_AUTO_TEST_SUITE(Snapshots)
+BOOST_AUTO_TEST_CASE(flat_snapshots) {
+  BOOST_CHECK_EQUAL(test_snapshot(0), 1);
+}
+BOOST_AUTO_TEST_CASE(page_snapshots) {
+  BOOST_CHECK_EQUAL(test_snapshot(1), 1);
+}
+BOOST_AUTO_TEST_SUITE_END()
+
+static int test_snapshot(bool sparse_checkpoint) {
+
+  // xbt_test_add("Initialization");
+  _sg_mc_sparse_checkpoint = sparse_checkpoint;
+  BOOST_CHECK_EQUAL(xbt_pagesize, getpagesize());
+  BOOST_CHECK_EQUAL(1 << xbt_pagebits, xbt_pagesize);
+
+  std::unique_ptr<simgrid::mc::RemoteClient> process(new simgrid::mc::RemoteClient(getpid(), -1));
+  process->init();
+  mc_model_checker = new ::simgrid::mc::ModelChecker(std::move(process));
+
+  for(int n=1; n!=256; ++n) {
+
+    // Store region page(s):
+    size_t byte_size = n * xbt_pagesize;
+    void* source = mmap(nullptr, byte_size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+    BOOST_CHECK_MESSAGE(source!=MAP_FAILED, "Could not allocate source memory");
+
+    // Init memory and take snapshots:
+    init_memory(source, byte_size);
+    simgrid::mc::RegionSnapshot region0 = simgrid::mc::sparse_region(
+      simgrid::mc::RegionType::Unknown, source, source, byte_size);
+    for(int i=0; i<n; i+=2) {
+      init_memory((char*) source + i*xbt_pagesize, xbt_pagesize);
+    }
+    simgrid::mc::RegionSnapshot region = simgrid::mc::sparse_region(
+      simgrid::mc::RegionType::Unknown, source, source, byte_size);
+
+    void* destination = mmap(nullptr, byte_size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+    BOOST_CHECK_MESSAGE(source!=MAP_FAILED, "Could not allocate destination memory");
+
+    // xbt_test_add("Reading whole region data for %i page(s)", n);
+    const void* read = MC_region_read(&region, destination, source, byte_size);
+    BOOST_CHECK_MESSAGE(not memcmp(source, read, byte_size), "Mismatch in MC_region_read()");
+
+    // xbt_test_add("Reading parts of region data for %i page(s)", n);
+    for(int j=0; j!=100; ++j) {
+      size_t offset = rand() % byte_size;
+      size_t size = rand() % (byte_size - offset);
+      const void* read = MC_region_read(&region, destination, (const char*) source+offset, size);
+      BOOST_CHECK_MESSAGE(not memcmp((char*)source + offset, read, size), "Mismatch in MC_region_read()");
+    }
+
+    // xbt_test_add("Compare whole region data for %i page(s)", n);
+
+    BOOST_CHECK_MESSAGE(MC_snapshot_region_memcmp(source, &region0, source, &region, byte_size),
+      "Unexpected match in MC_snapshot_region_memcmp() with previous snapshot");
+
+    // xbt_test_add("Compare parts of region data for %i page(s) with itself", n);
+    for(int j=0; j!=100; ++j) {
+      size_t offset = rand() % byte_size;
+      size_t size = rand() % (byte_size - offset);
+      BOOST_CHECK_MESSAGE(
+          not MC_snapshot_region_memcmp((char*)source + offset, &region, (char*)source + offset, &region, size),
+          "Mismatch in MC_snapshot_region_memcmp()");
+    }
+
+    if (n==1) {
+      // xbt_test_add("Read pointer for %i page(s)", n);
+      memcpy(source, &mc_model_checker, sizeof(void*));
+      simgrid::mc::RegionSnapshot region2 = simgrid::mc::sparse_region(
+        simgrid::mc::RegionType::Unknown, source, source, byte_size);
+      BOOST_CHECK_MESSAGE(MC_region_read_pointer(&region2, source) == mc_model_checker,
+        "Mismtach in MC_region_read_pointer()");
+    }
+
+    munmap(destination, byte_size);
+    munmap(source, byte_size);
+  }
+
+  delete mc_model_checker;
+  mc_model_checker = nullptr;
+
+  return 1; // dummy value, for BOOST unit test
+}
+
+/*******************************/
+/* GENERATED FILE, DO NOT EDIT */
+/*******************************/
+