Add virtual memory API

2 files changed, 47 insertions, 7 deletions

diff --git a/deimos/core/os.h b/deimos/core/os.h
index fa1762a..9aea509 100644
--- a/deimos/core/os.h
+++ b/deimos/core/os.h
@@ -36,13 +36,27 @@ public:
     virtual void* GetSymbol(OsDll*, gsl::czstring) = 0;

 };

 

+class OsVirtualMemoryApi

+{

+public:

+    OsVirtualMemoryApi() = default;

+    deimos_NO_COPY_MOVE(OsVirtualMemoryApi);

+    virtual ~OsVirtualMemoryApi() = default;

+

+    virtual gsl::owner<void*> Map(int64_t size) = 0;

+    virtual void Unmap(gsl::owner<void*>) = 0;

+    virtual gsl::owner<void*> Reserve(int64_t size) = 0;

+    virtual void Commit(void* ptr, int64_t size) = 0;

+};

+

 class OsApi

 {

 public:

     static constexpr IdName kApiName{"deimos::OsApi"};

 

-    OsConsoleApi* console{};

-    OsDllApi* dll{};

+    OsConsoleApi*           console{};

+    OsDllApi*               dll{};

+    OsVirtualMemoryApi*     virtual_memory{};

 };

 

 class OsConsoleWriter : public IWriter

diff --git a/deimos/core/os_win32.cpp b/deimos/core/os_win32.cpp
index 1c6b664..d848530 100644
--- a/deimos/core/os_win32.cpp
+++ b/deimos/core/os_win32.cpp
@@ -8,7 +8,7 @@
 namespace deimos

 {

 

-class Win32OsConsoleApiImpl : public OsConsoleApi

+class Win32ConsoleApiImpl : public OsConsoleApi

 {

     HANDLE m_stdout;

     HANDLE m_stderr;

@@ -24,7 +24,7 @@ class Win32OsConsoleApiImpl : public OsConsoleApi
     }

 

 public:

-    Win32OsConsoleApiImpl() :

+    Win32ConsoleApiImpl() :

         m_stdout{::GetStdHandle(STD_OUTPUT_HANDLE)},

         m_stderr{::GetStdHandle(STD_ERROR_HANDLE)}

     {}

@@ -35,7 +35,7 @@ public:
     }

 };

 

-class Win32OsDllApiImpl : public OsDllApi

+class Win32DllApiImpl : public OsDllApi

 {

 public:

     OsDll* Open(gsl::czstring name) override

@@ -49,16 +49,42 @@ public:
     }

 };

 

+class Win32VirtualMemoryApiImpl : public OsVirtualMemoryApi

+{

+public:

+    gsl::owner<void*> Map(int64_t size) override

+    {

+        return ::VirtualAlloc(nullptr, (SIZE_T)size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);

+    }

+

+    void Unmap(gsl::owner<void*> ptr) override

+    {

+        ::VirtualFree(ptr, 0, MEM_RELEASE);

+    }

+

+    gsl::owner<void*> Reserve(int64_t size) override

+    {

+        return ::VirtualAlloc(nullptr, (SIZE_T)size, MEM_RESERVE, PAGE_READWRITE);

+    }

+

+    void Commit(void* ptr, int64_t size) override

+    {

+        ::VirtualAlloc(ptr, (SIZE_T)size, MEM_COMMIT, PAGE_READWRITE);

+    }

+};

+

 class Win32OsApiImpl : public OsApi

 {

-    Win32OsConsoleApiImpl m_console_api;

-    Win32OsDllApiImpl m_dll_api;

+    Win32ConsoleApiImpl m_console_api;

+    Win32DllApiImpl m_dll_api;

+    Win32VirtualMemoryApiImpl m_virtual_memory_api;

 

 public:

     Win32OsApiImpl()

     {

         console = &m_console_api;

         dll = &m_dll_api;

+        virtual_memory = &m_virtual_memory_api;

     }

 };