From 2652bfba735913bfcf22e77240c5e1f2e677357a Mon Sep 17 00:00:00 2001
From: Maurizio Monge <maurizio@localhost.localdomain>
Date: Wed, 10 Oct 2007 23:35:28 +0200
Subject: [PATCH] Implemented mmap wrapper for windows. on wine it works, i
 hope on windows too.

---
 book.cpp      | 33 +++++++++++---------
 moveparse.cpp |  4 +--
 platform.cpp  | 99 +++++++++++++++++++++++++++++++++++++++++------------------
 platform.h    |  4 +--
 4 files changed, 92 insertions(+), 48 deletions(-)

diff --git a/book.cpp b/book.cpp
index 5541052..3e8a3f2 100644
--- a/book.cpp
+++ b/book.cpp
@@ -263,18 +263,19 @@ bool Engine::open_book(const char *f)
 {
     close_book();
 
-//     book_mmap = map_file( f, &book_size);
-//     if(!book_mmap)
-//     {
-//         output("Error, could not open and mmap the book file \"%s\".\n", f);
-//         return false;
-//     }
-//     else
-//     {
-//         output("Book file \"%s\" opened and mapped, good!\n", f);
-//         return true;
-//     }
-
+#if 1
+    book_mmap = map_file(f, &book_size);
+    if(!book_mmap)
+    {
+        output("Error, could not open and mmap the book file \"%s\".\n", f);
+        return false;
+    }
+    else
+    {
+        output("Book file \"%s\" opened and mapped, good!\n", f);
+        return true;
+    }
+#else
     FILE *file = fopen(f, "r");
     if(!file)
     {
@@ -293,14 +294,18 @@ bool Engine::open_book(const char *f)
         output("Book file \"%s\" opened and mapped, good!\n", f);
         return true;
     }
+#endif
 }
 
 void Engine::close_book()
 {
-//     if(book_mmap)
-//         unmap_file(book_mmap, book_size);
+#if 1
+    if(book_mmap)
+        unmap_file(book_mmap, book_size);
+#else
     if(book_mmap)
         free(book_mmap);
+#endif
     book_mmap = NULL;
 }
 
diff --git a/moveparse.cpp b/moveparse.cpp
index 563c535..f44a632 100644
--- a/moveparse.cpp
+++ b/moveparse.cpp
@@ -318,8 +318,8 @@ int Engine::run_epd_prog(const char* prog, int time, const char* file, bool quie
             fprintf(out, "post\n");
             fprintf(out, "go\n");
 
-            sleep(1);
-            fprintf(out, "?\n");
+            //sleep(1);
+            //fprintf(out, "?\n");
 
             while(fgets(buf, 1024, in))
             {
diff --git a/platform.cpp b/platform.cpp
index d130310..d5d9a2c 100644
--- a/platform.cpp
+++ b/platform.cpp
@@ -20,6 +20,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <windows.h>
+#include "platform.h"
 
 static bool pipe;
 static HANDLE handle;
@@ -70,6 +71,45 @@ bool start_engine(const char *prog, FILE **in, FILE **out)
     return false;
 }
 
+void *map_file(const char *file_name, uint32_t *size)
+{
+    HANDLE file, fmap;
+    uint64_t offset = 0;
+    DWORD hiword, loword;
+    void *retv;
+
+    file = CreateFile(file_name, GENERIC_READ, FILE_SHARE_READ|FILE_SHARE_WRITE,
+                                    NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+    if(file==INVALID_HANDLE_VALUE)
+        return NULL;
+
+    loword = GetFileSize(file, &hiword);
+    if(loword == INVALID_FILE_SIZE)
+    {
+        CloseHandle(file);
+        return(NULL);
+    }
+    *size = loword | ((uint64_t)hiword<<32);
+
+    fmap = CreateFileMapping(file, NULL, PAGE_READONLY, 0, 0, NULL);
+    if(fmap == INVALID_HANDLE_VALUE)
+    {
+        CloseHandle(file);
+        return NULL;
+    }
+
+    retv = MapViewOfFile(fmap, FILE_MAP_READ, (DWORD)(offset >> 32), (DWORD)(offset % 0xffffffff), 0);
+
+    CloseHandle(fmap);
+    CloseHandle(file);
+    return retv;
+}
+
+void unmap_file(void *addr, uint32_t size)
+{
+    UnmapViewOfFile(addr);
+}
+
 #else //defined(_WIN32) || defined(_WIN64)
 
 #include <unistd.h>
@@ -114,36 +154,35 @@ int current_time()
     return tv.tv_sec*100 + tv.tv_usec/10000;
 }
 
-// void *map_file(const char *file_name, uint32_t *size)
-// {
-//     struct stat st;
-//     void *addr;
-//     int fd;
-//
-//     fd = open( file_name, O_RDONLY);
-//     if(fd == -1)
-//         return NULL;
-//
-//     fstat(fd, &st);
-//     if(size)
-//      *size = st.st_size;
-//
-//     addr = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
-//     if(addr == (void*)-1)
-//     {
-//         close(fd);
-//         return NULL;
-//     }
-//
-//     close(fd);
-//     return addr;
-//
-// }
-//
-// void unmap_file(void*addr, uint32_t size)
-// {
-//     munmap(addr, size);
-// }
+void *map_file(const char *file_name, uint32_t *size)
+{
+    struct stat st;
+    void *addr;
+    int fd;
+
+    fd = open( file_name, O_RDONLY);
+    if(fd == -1)
+        return NULL;
+
+    fstat(fd, &st);
+    if(size)
+     *size = st.st_size;
+
+    addr = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
+    if(addr == (void*)-1)
+    {
+        close(fd);
+        return NULL;
+    }
+
+    close(fd);
+    return addr;
+}
+
+void unmap_file(void*addr, uint32_t size)
+{
+    munmap(addr, size);
+}
 
 bool start_engine(const char *prog, FILE **in, FILE **out)
 {
diff --git a/platform.h b/platform.h
index 96226c4..df27f04 100644
--- a/platform.h
+++ b/platform.h
@@ -22,8 +22,8 @@
 #include <inttypes.h>
 
 /* map and unmap a file in memory. */
-// void *map_file(const char *file_name, uint32_t* size);
-// void unmap_file(void*addr, uint32_t size);
+void *map_file(const char *file_name, uint32_t* size);
+void unmap_file(void*addr, uint32_t size);
 
 /* return the current time in centiseconds */
 int current_time();
-- 
2.11.4.GIT