X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/a4d071afeab4b3ff0a50eefbf48a391d4e8978aa..57970bcf4905da230f47be5c0f9a37128cca29f4:/src/mc/mc_snapshot.cpp

diff --git a/src/mc/mc_snapshot.cpp b/src/mc/mc_snapshot.cpp
index f408e67ef0..80c0817be5 100644
--- a/src/mc/mc_snapshot.cpp
+++ b/src/mc/mc_snapshot.cpp
@@ -9,8 +9,8 @@
 #include <memory>
 #include <utility>
 
-#include <xbt/asserts.h>
-#include <xbt/sysdep.h>
+#include "xbt/asserts.h"
+#include "xbt/sysdep.h"
 
 #include "src/internal_config.h"
 #include "src/smpi/private.h"
@@ -35,7 +35,7 @@ mc_mem_region_t mc_get_snapshot_region(
   size_t n = snapshot->snapshot_regions.size();
   for (size_t i = 0; i != n; ++i) {
     mc_mem_region_t region = snapshot->snapshot_regions[i].get();
-    if (!(region && region->contain(simgrid::mc::remote(addr))))
+    if (not(region && region->contain(simgrid::mc::remote(addr))))
       continue;
 
     if (region->storage_type() == simgrid::mc::StorageType::Privatized) {
@@ -74,8 +74,11 @@ const void* MC_region_read_fragmented(mc_mem_region_t region, void* target, cons
   // Last byte of the memory area:
   void* end = (char*) addr + size - 1;
 
+  // TODO, we assume the chunks are aligned to natural chunk boundaries.
+  // We should remove this assumption.
+
   // Page of the last byte of the memory area:
-  size_t page_end = mc_page_number(nullptr, end);
+  size_t page_end = simgrid::mc::mmu::split((std::uintptr_t) end).first;
 
   void* dest = target;
 
@@ -83,9 +86,11 @@ const void* MC_region_read_fragmented(mc_mem_region_t region, void* target, cons
     xbt_die("Missing destination buffer for fragmented memory access");
 
   // Read each page:
-  while (mc_page_number(nullptr, addr) != page_end) {
+  while (simgrid::mc::mmu::split((std::uintptr_t) addr).first != page_end) {
     void* snapshot_addr = mc_translate_address_region_chunked((uintptr_t) addr, region);
-    void* next_page = mc_page_from_number(nullptr, mc_page_number(NULL, addr) + 1);
+    void* next_page = (void*) simgrid::mc::mmu::join(
+      simgrid::mc::mmu::split((std::uintptr_t) addr).first + 1,
+      0);
     size_t readable = (char*) next_page - (char*) addr;
     memcpy(dest, snapshot_addr, readable);
     addr = (char*) addr + readable;
@@ -127,7 +132,7 @@ int MC_snapshot_region_memcmp(
     res = 0;
   else
     res = memcmp(buffer1, buffer2, size);
-  if (!stack_alloc) {
+  if (not stack_alloc) {
     free(buffer1a);
     free(buffer2a);
   }
@@ -143,8 +148,8 @@ int MC_snapshot_region_memcmp(
  * @return same as memcmp
  * */
 int MC_snapshot_memcmp(
-  const void* addr1, mc_snapshot_t snapshot1,
-  const void* addr2, mc_snapshot_t snapshot2, int process_index, size_t size)
+  const void* addr1, simgrid::mc::Snapshot* snapshot1,
+  const void* addr2, simgrid::mc::Snapshot* snapshot2, int process_index, size_t size)
 {
   mc_mem_region_t region1 = mc_get_snapshot_region(addr1, snapshot1, process_index);
   mc_mem_region_t region2 = mc_get_snapshot_region(addr2, snapshot2, process_index);
@@ -154,18 +159,13 @@ int MC_snapshot_memcmp(
 namespace simgrid {
 namespace mc {
 
-Snapshot::Snapshot(Process* process) :
-  AddressSpace(process),
-  num_state(0),
-  heap_bytes_used(0),
-  enabled_processes(),
-  privatization_index(0),
-  hash(0)
-{
-
-}
-
-Snapshot::~Snapshot()
+Snapshot::Snapshot(Process* process, int _num_state)
+    : AddressSpace(process)
+    , num_state(_num_state)
+    , heap_bytes_used(0)
+    , enabled_processes()
+    , privatization_index(0)
+    , hash(0)
 {
 
 }
@@ -229,7 +229,7 @@ XBT_TEST_UNIT("page_snapshots", test_per_snpashots, "Test per-page snapshots")
 
 static void test_snapshot(bool sparse_checkpoint) {
 
-  xbt_test_add("Initialisation");
+  xbt_test_add("Initialization");
   _sg_mc_sparse_checkpoint = sparse_checkpoint;
   xbt_assert(xbt_pagesize == getpagesize());
   xbt_assert(1 << xbt_pagebits == xbt_pagesize);
@@ -248,27 +248,26 @@ static void test_snapshot(bool sparse_checkpoint) {
     // 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, nullptr);
+      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, nullptr);
+      simgrid::mc::RegionType::Unknown, source, source, byte_size);
 
     void* destination = mmap(nullptr, byte_size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
     xbt_assert(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);
-    xbt_test_assert(!memcmp(source, read, byte_size), "Mismatch in MC_region_read()");
+    xbt_test_assert(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);
-      xbt_test_assert(!memcmp((char*) source+offset, read, size),
-        "Mismatch in MC_region_read()");
+      xbt_test_assert(not memcmp((char*)source + offset, read, size), "Mismatch in MC_region_read()");
     }
 
     xbt_test_add("Compare whole region data for %i page(s)", n);
@@ -280,15 +279,16 @@ static void test_snapshot(bool sparse_checkpoint) {
     for(int j=0; j!=100; ++j) {
       size_t offset = rand() % byte_size;
       size_t size = rand() % (byte_size - offset);
-      xbt_test_assert(!MC_snapshot_region_memcmp((char*) source+offset, &region, (char*) source+offset, &region, size),
-        "Mismatch in MC_snapshot_region_memcmp()");
+      xbt_test_assert(
+          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, nullptr);
+        simgrid::mc::RegionType::Unknown, source, source, byte_size);
       xbt_test_assert(MC_region_read_pointer(&region2, source) == mc_model_checker,
         "Mismtach in MC_region_read_pointer()");
     }