Tool to replay memory allocation recordings.

Included with the tool are a set of app memory recordings that
can be used to judge the abilities of the native memory
allocator.

Verified the full flow by running valgrind on the host version on all
the current dumps and verifying that there are no leak, and no errors.

Change-Id: I756224991f04b61ba26c692a30a37aad0c9fb163

1 files changed, 168 insertions, 0 deletions

diff --git a/memory_replay/Action.cpp b/memory_replay/Action.cpp
new file mode 100644
index 00000000..3c97c438
--- /dev/null
+++ b/memory_replay/Action.cpp
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <inttypes.h>
+#include <malloc.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/param.h>
+
+#include <new>
+
+#include "Action.h"
+#include "Threads.h"
+#include "Pointers.h"
+
+class EndThreadAction : public Action {
+ public:
+  EndThreadAction() {}
+
+  bool EndThread() override { return true; }
+
+  void Execute(Pointers*) override {}
+};
+
+class AllocAction : public Action {
+ public:
+  AllocAction(uintptr_t key_pointer) : key_pointer_(key_pointer) {}
+
+ protected:
+  uintptr_t key_pointer_ = 0;
+  size_t size_ = 0;
+};
+
+class MallocAction : public AllocAction {
+ public:
+  MallocAction(uintptr_t key_pointer, const char* line) : AllocAction(key_pointer) {
+    if (sscanf(line, "%zu", &size_) != 1) {
+      is_error_ = true;
+    }
+  }
+
+  void Execute(Pointers* pointers) override {
+    void* memory = malloc(size_);
+    memset(memory, 1, size_);
+    pointers->Add(key_pointer_, memory);
+  }
+};
+
+class CallocAction : public AllocAction {
+ public:
+  CallocAction(uintptr_t key_pointer, const char* line) : AllocAction(key_pointer) {
+    if (sscanf(line, "%zu %zu", &n_elements_, &size_) != 2) {
+      is_error_ = true;
+    }
+  }
+
+  void Execute(Pointers* pointers) override {
+    void* memory = calloc(n_elements_, size_);
+    memset(memory, 0, n_elements_ * size_);
+    pointers->Add(key_pointer_, memory);
+  }
+
+ private:
+  size_t n_elements_ = 0;
+};
+
+class ReallocAction : public AllocAction {
+ public:
+  ReallocAction(uintptr_t key_pointer, const char* line) : AllocAction(key_pointer) {
+    if (sscanf(line, "%" SCNxPTR " %zu", &old_pointer_, &size_) != 2) {
+      is_error_ = true;
+    }
+  }
+
+  bool DoesFree() override { return old_pointer_ != 0; }
+
+  void Execute(Pointers* pointers) override {
+    void* old_memory = nullptr;
+    if (old_pointer_ != 0) {
+      old_memory = pointers->Remove(old_pointer_);
+    }
+    void* memory = realloc(old_memory, size_);
+    memset(memory, 1, size_);
+    pointers->Add(key_pointer_, memory);
+  }
+
+ private:
+  uintptr_t old_pointer_ = 0;
+};
+
+class MemalignAction : public AllocAction {
+ public:
+  MemalignAction(uintptr_t key_pointer, const char* line) : AllocAction(key_pointer) {
+    if (sscanf(line, "%zu %zu", &align_, &size_) != 2) {
+      is_error_ = true;
+    }
+  }
+
+  void Execute(Pointers* pointers) override {
+    void* memory = memalign(align_, size_);
+    memset(memory, 1, size_);
+    pointers->Add(key_pointer_, memory);
+  }
+
+ private:
+  size_t align_ = 0;
+};
+
+class FreeAction : public AllocAction {
+ public:
+  FreeAction(uintptr_t key_pointer) : AllocAction(key_pointer) {
+  }
+
+  bool DoesFree() override { return key_pointer_ != 0; }
+
+  void Execute(Pointers* pointers) override {
+    if (key_pointer_) {
+      void* memory = pointers->Remove(key_pointer_);
+      free(memory);
+    }
+  }
+};
+
+size_t Action::MaxActionSize() {
+  size_t max = MAX(sizeof(EndThreadAction), sizeof(MallocAction));
+  max = MAX(max, sizeof(CallocAction));
+  max = MAX(max, sizeof(ReallocAction));
+  max = MAX(max, sizeof(MemalignAction));
+  return MAX(max, sizeof(FreeAction));
+}
+
+Action* Action::CreateAction(uintptr_t key_pointer, const char* type,
+                             const char* line, void* action_memory) {
+  Action* action = nullptr;
+  if (strcmp(type, "malloc") == 0) {
+    action = new (action_memory) MallocAction(key_pointer, line);
+  } else if (strcmp(type, "free") == 0) {
+    action = new (action_memory) FreeAction(key_pointer);
+  } else if (strcmp(type, "calloc") == 0) {
+    action = new (action_memory) CallocAction(key_pointer, line);
+  } else if (strcmp(type, "realloc") == 0) {
+    action = new (action_memory) ReallocAction(key_pointer, line);
+  } else if (strcmp(type, "memalign") == 0) {
+    action = new (action_memory) MemalignAction(key_pointer, line);
+  } else if (strcmp(type, "thread_done") == 0) {
+    action = new (action_memory) EndThreadAction();
+  }
+
+  if (action == nullptr || action->IsError()) {
+    return nullptr;
+  }
+  return action;
+}